2006 Vol. 23, No. 2
2006, 23(2): 115-121.
Abstract:
To construct the harmonious mechanisms on forest resource protected and social-economic development will benefit to effectively protect the natural forest resource and improve the sustainable development in natual forest protection region .This paper put forward the principles to construct a harmonious mechanism;the principles are market-oriented , broad cooperation , systemic , benefits balance on short run and long run , and interest prompting . Under the guide of the above principles , the author believe that market mechanisms , multi-participation , benefits balance and partnership cooperation are the most important mechanisms to construct a harmonious development framework for natural forest protection regions .[ Ch , 3 fig .1 tab .6 ref .]
To construct the harmonious mechanisms on forest resource protected and social-economic development will benefit to effectively protect the natural forest resource and improve the sustainable development in natual forest protection region .This paper put forward the principles to construct a harmonious mechanism;the principles are market-oriented , broad cooperation , systemic , benefits balance on short run and long run , and interest prompting . Under the guide of the above principles , the author believe that market mechanisms , multi-participation , benefits balance and partnership cooperation are the most important mechanisms to construct a harmonious development framework for natural forest protection regions .[ Ch , 3 fig .1 tab .6 ref .]
2006, 23(2): 122-128.
Abstract:
Forest resources information system in China is vertically divided into four levels , namely , state , province , city and county .Due to the different requirements for the management systems at the different levels , there are some differences among the technical criteria for them.The criteria should be practical , scientific and economical .According to the development of information technology , the paper focuses on the needs and developing trends of forest resources monitoring and information management at the county level , analyzes the technical criteria for its network platform , information integration platform, data collection and output , data storage and maintenance and points out the key technology .It is thought that the collection and output of data should abide by the national and industrial criteria .When developing the system , the expansion of its management and decision making should also be taken into consideration .The supporting software and developing environment should facilitate its maintenance and expansion .The operating cost of the system should also be taken into consideration .[ Ch , 6 fig . 1 tab .13 ref .]
Forest resources information system in China is vertically divided into four levels , namely , state , province , city and county .Due to the different requirements for the management systems at the different levels , there are some differences among the technical criteria for them.The criteria should be practical , scientific and economical .According to the development of information technology , the paper focuses on the needs and developing trends of forest resources monitoring and information management at the county level , analyzes the technical criteria for its network platform , information integration platform, data collection and output , data storage and maintenance and points out the key technology .It is thought that the collection and output of data should abide by the national and industrial criteria .When developing the system , the expansion of its management and decision making should also be taken into consideration .The supporting software and developing environment should facilitate its maintenance and expansion .The operating cost of the system should also be taken into consideration .[ Ch , 6 fig . 1 tab .13 ref .]
2006, 23(2): 129-134.
Abstract:
The effects of hot pressing temperature and natural curing time on the properties of the fast-curing cement particle board (CPB)were studied with particles broken from poplar strands of OSB (oriented structural board) factories and 42.5 level silicate as experimental materials and Na2SiO3 as additive .The results were as follows :(1)Hot pressing temperature had no obvious effects on the properties of thick CPB (20 mm), but had obvious effects on modulus of elasticity (MOE) and thickness swelling rate of thin CPB (12 mm)when the hot-pressing temperature was from 85 ℃to 95 ℃.(2)The natural curing time of CPB after hot pressing on the physical and mechanical properties of fast-curing CPB were determined by the hydration of cement .The natural curing time of thick CPB had obvious effects on the properties because the cement well hydrated with high moisture content of thick CPB .The natural curing time of thin CPB had no obvious effects on the properties because the cements didn't well hydrated with low moisture content of thin CPB .[ Ch , 7 tab .10 ref .]
The effects of hot pressing temperature and natural curing time on the properties of the fast-curing cement particle board (CPB)were studied with particles broken from poplar strands of OSB (oriented structural board) factories and 42.5 level silicate as experimental materials and Na2SiO3 as additive .The results were as follows :(1)Hot pressing temperature had no obvious effects on the properties of thick CPB (20 mm), but had obvious effects on modulus of elasticity (MOE) and thickness swelling rate of thin CPB (12 mm)when the hot-pressing temperature was from 85 ℃to 95 ℃.(2)The natural curing time of CPB after hot pressing on the physical and mechanical properties of fast-curing CPB were determined by the hydration of cement .The natural curing time of thick CPB had obvious effects on the properties because the cement well hydrated with high moisture content of thick CPB .The natural curing time of thin CPB had no obvious effects on the properties because the cements didn't well hydrated with low moisture content of thin CPB .[ Ch , 7 tab .10 ref .]
2006, 23(2): 135-139.
Abstract:
The anti-mold effects of Phyllostachys pubescens extracted with solutions such as cold water , hot water , benzene +alcohol , benzene +ether , 10 g kg-1 HCl and 10 g kg-1 NaOH were studied .The results were as follows :(1)Bamboo specimens extracted with 10 gkg-1 HCl could successfully resist the testing molds including Trichoderma viride , Penicillium citrinum and Aspergillus niger .The average infection values of the treated specimens after a month were all zero .(2)Bamboo specimens extracted with 10 gkg-1 NaOH resisted Trichoderma viride and Penicillium citrinum better than Aispergillus niger .When the specimens were extracted only with 10 gkg-1 NaOH , the infection values were all zero .But when they were extracted with 10 gkg-1 NaOH and washed with water , the resistances to Trichoderma viride and Penicillium citrinum decreased dramatically , and the infection values being 1.58 and 0.35 respectively .Bamboo timbers treated with 10 g kg-1 NaOH had poor resistance to Aspergillus niger , and the infection values of the treated specimens before and after being washed with water were 1.82 and 2.79 respectively .(3)Bamboo timbers extracted with cold water , hot water , benzene +alcohol , benzene +ether were hardly effective to the testing mold .The infection values of the treated specimens were all over 3.00 . The different anti-mold effects were caused by different types and amounts of extractives .[ Ch , 3 fig .2 tab .12 ref .]
The anti-mold effects of Phyllostachys pubescens extracted with solutions such as cold water , hot water , benzene +alcohol , benzene +ether , 10 g kg-1 HCl and 10 g kg-1 NaOH were studied .The results were as follows :(1)Bamboo specimens extracted with 10 gkg-1 HCl could successfully resist the testing molds including Trichoderma viride , Penicillium citrinum and Aspergillus niger .The average infection values of the treated specimens after a month were all zero .(2)Bamboo specimens extracted with 10 gkg-1 NaOH resisted Trichoderma viride and Penicillium citrinum better than Aispergillus niger .When the specimens were extracted only with 10 gkg-1 NaOH , the infection values were all zero .But when they were extracted with 10 gkg-1 NaOH and washed with water , the resistances to Trichoderma viride and Penicillium citrinum decreased dramatically , and the infection values being 1.58 and 0.35 respectively .Bamboo timbers treated with 10 g kg-1 NaOH had poor resistance to Aspergillus niger , and the infection values of the treated specimens before and after being washed with water were 1.82 and 2.79 respectively .(3)Bamboo timbers extracted with cold water , hot water , benzene +alcohol , benzene +ether were hardly effective to the testing mold .The infection values of the treated specimens were all over 3.00 . The different anti-mold effects were caused by different types and amounts of extractives .[ Ch , 3 fig .2 tab .12 ref .]
2006, 23(2): 140-144.
Abstract:
The results of the study of the soil nutrients in Torreya grandis `Merrillii' plantation were as follows : (1)The average contents of total nitrogen , total phosphorus , total potassium and hydrolysable nitrogen in the 19 soilsamples of Torreya grandis `Merrillii' plantations were higher than those in ordinary hilly red-yellow soil .But the contents differed greatly among the samples :the ranges of organic matter , total nitrogen , total phosphorus , total potassium, hydrolysable nitrogen contents varied between 4.90 -29.70 , 0.83 -3.25 , 0.37 -3.34 , 1.60 -13.88 gkg-1 , and 105.00 -490.00 mgkg-1respectively .The contents of nitrogen , phosphorus and potassium in the soil samples were unproportionate :the nitrogen was excessive whereas the available potassium was scarce . (2)According to the Nutrient Grade Standard of Southern Plantation , of the 19 samples , 14 were rich or extremely rich in total and hydrolysable nitrogen , and none of them were scarce in total and hydrolysable nitrogen .8 samples were high in total phosphorus contents , 7 medium and 4 low .2 samples were high in total potassium contents , 9 medium and 8 low .Only 2 samples were low in available phosphorus contents , while 17 samples were with available potassium contents below the medium level .(3)The results were similar when samples were graded by Nutrient Grade of Green Food Plantation .But the organic matter contents were all below medium level.These indicated that due to fine management and heavy fertilization , the nitrogen , phosphorus and potassium contents were increased but unproportionate .So , more attention should be paid to the balanced fertilization , i .e ., limiting the application of nitrogen , keeping phosphorus and increasing potassium .[ Ch , 4 tab .10 ref .]
The results of the study of the soil nutrients in Torreya grandis `Merrillii' plantation were as follows : (1)The average contents of total nitrogen , total phosphorus , total potassium and hydrolysable nitrogen in the 19 soilsamples of Torreya grandis `Merrillii' plantations were higher than those in ordinary hilly red-yellow soil .But the contents differed greatly among the samples :the ranges of organic matter , total nitrogen , total phosphorus , total potassium, hydrolysable nitrogen contents varied between 4.90 -29.70 , 0.83 -3.25 , 0.37 -3.34 , 1.60 -13.88 gkg-1 , and 105.00 -490.00 mgkg-1respectively .The contents of nitrogen , phosphorus and potassium in the soil samples were unproportionate :the nitrogen was excessive whereas the available potassium was scarce . (2)According to the Nutrient Grade Standard of Southern Plantation , of the 19 samples , 14 were rich or extremely rich in total and hydrolysable nitrogen , and none of them were scarce in total and hydrolysable nitrogen .8 samples were high in total phosphorus contents , 7 medium and 4 low .2 samples were high in total potassium contents , 9 medium and 8 low .Only 2 samples were low in available phosphorus contents , while 17 samples were with available potassium contents below the medium level .(3)The results were similar when samples were graded by Nutrient Grade of Green Food Plantation .But the organic matter contents were all below medium level.These indicated that due to fine management and heavy fertilization , the nitrogen , phosphorus and potassium contents were increased but unproportionate .So , more attention should be paid to the balanced fertilization , i .e ., limiting the application of nitrogen , keeping phosphorus and increasing potassium .[ Ch , 4 tab .10 ref .]
2006, 23(2): 145-148.
Abstract:
Using self-made Ohmic heating installation to study its sterilizing effect on Alicyclobacillus acidoterrestris .The postvaccinal apple juice was treated by different temperatures , voltages , heating times , pH values and volumes .The results showed that Ohmic heating could destroy Alicyclobacillus acidoterrestris efficiently . The sterilizing effect was improved with the increasing of temperature , voltage and volume , but was reduced with the raising of pH value .These parameters could alter the electrical current of the liquid , and then it could enhance sterilization effect .So the sterilization condition of Ohmic heating can be simplified .[ Ch , 4 fig .15 ref .]
Using self-made Ohmic heating installation to study its sterilizing effect on Alicyclobacillus acidoterrestris .The postvaccinal apple juice was treated by different temperatures , voltages , heating times , pH values and volumes .The results showed that Ohmic heating could destroy Alicyclobacillus acidoterrestris efficiently . The sterilizing effect was improved with the increasing of temperature , voltage and volume , but was reduced with the raising of pH value .These parameters could alter the electrical current of the liquid , and then it could enhance sterilization effect .So the sterilization condition of Ohmic heating can be simplified .[ Ch , 4 fig .15 ref .]
2006, 23(2): 149-152.
Abstract:
The larval external morphology of Chilo suppressalis (Walker) and Tryporyza incertulas (Walker) of Pyralidae (Lepidoptera) are described and illustrated .All specimens are deposited in the Insect Collection of College of Life Sciences , China Jiliang University , China .[ En , 2 fig .7 ref .]
The larval external morphology of Chilo suppressalis (Walker) and Tryporyza incertulas (Walker) of Pyralidae (Lepidoptera) are described and illustrated .All specimens are deposited in the Insect Collection of College of Life Sciences , China Jiliang University , China .[ En , 2 fig .7 ref .]
2006, 23(2): 153-158.
Abstract:
From February to April in 2004 , a field survey of spring habitats of Hume's pheasant (Syrmaticus humiae)in Nanhua part of Ailaoshan National Nature Reserve was conducted .The results were as follows :(1)There were three types of spring habitats of Hume's pheasant , i .e .evergreen broadleaf forests , sparse shrubs and young pine plantations .The first two types were main habitats of Hume's pheasant .(2)The main topographical characters of habitats of Hume's pheasant were higher altitudes , eutropic and steeper slopes , shorter distance to water source , and longer distance to road .Main species of arbors included Fagaceae and Theaceae with small average diameter at breast height and lower average height , lower coverage and density .Main species of shrub included Theaceae and Salicaceae with taller height and lower density .Main species of herb included Violaceae , Rosaceae and Compositae with higher density .Coverage of leaf litter was lower .(3)Herbage layer and shrub layer which offered large quantity of food resources and good concealments respectively played more important roles than arbor layer .The density of herbage layer and the coverage of shrub layer were the main factors affecting the habitat use of Hume's pheasant .[ Ch , 3 tab .20 ref .]
From February to April in 2004 , a field survey of spring habitats of Hume's pheasant (Syrmaticus humiae)in Nanhua part of Ailaoshan National Nature Reserve was conducted .The results were as follows :(1)There were three types of spring habitats of Hume's pheasant , i .e .evergreen broadleaf forests , sparse shrubs and young pine plantations .The first two types were main habitats of Hume's pheasant .(2)The main topographical characters of habitats of Hume's pheasant were higher altitudes , eutropic and steeper slopes , shorter distance to water source , and longer distance to road .Main species of arbors included Fagaceae and Theaceae with small average diameter at breast height and lower average height , lower coverage and density .Main species of shrub included Theaceae and Salicaceae with taller height and lower density .Main species of herb included Violaceae , Rosaceae and Compositae with higher density .Coverage of leaf litter was lower .(3)Herbage layer and shrub layer which offered large quantity of food resources and good concealments respectively played more important roles than arbor layer .The density of herbage layer and the coverage of shrub layer were the main factors affecting the habitat use of Hume's pheasant .[ Ch , 3 tab .20 ref .]
2006, 23(2): 159-162.
Abstract:
The aroma constituents of fresh Syringa oblata flowers were collected by solid-phase microextraction (SPME).The chemical constituents were separated and identified by gas chromatography-mass spectrometry .A quantitative analysis in percent was performed by peak area normalization measurements .Germacrene-D (22.37 %), -Bourbonene (15.97 %), Benzaldehyde (11.03 %), 13-Caryophyllene (7.56 %), -Gurjunene (3.43 %), Linalool (3.18 %), Lilac aldehyde B (2.99 %), -Copaene (2.70 % ), Phenylethyl alcohol (2.39 % ), Benzeneacetaldehyde (1.99 %), Benzyl alcohol (1.89 %), Lilac alcohol B (1.87 %), -Guaiene (1.49 %) , Lilac aldehyde A (1.46 %), -Pinene (1.39 %), Lilac alcohol A (1.03 %)and -Humulene (1.03 %)were the most abundant volatile compounds released from fresh flowers of Syringa oblata and a total of 48 volatile compounds were identified in this study .The four isomers of lilac alcohol and two isomer lilac aldehyde were the characteristic components of the aroma of fresh flowers of Syringa oblata .Headspace SPME-GC-MS afforded a simple sampling method for the headspace volatile compounds released from fresh flowers of Syringa oblata .[ Ch , 1 fig .1 tab .10 ref .]
The aroma constituents of fresh Syringa oblata flowers were collected by solid-phase microextraction (SPME).The chemical constituents were separated and identified by gas chromatography-mass spectrometry .A quantitative analysis in percent was performed by peak area normalization measurements .Germacrene-D (22.37 %), -Bourbonene (15.97 %), Benzaldehyde (11.03 %), 13-Caryophyllene (7.56 %), -Gurjunene (3.43 %), Linalool (3.18 %), Lilac aldehyde B (2.99 %), -Copaene (2.70 % ), Phenylethyl alcohol (2.39 % ), Benzeneacetaldehyde (1.99 %), Benzyl alcohol (1.89 %), Lilac alcohol B (1.87 %), -Guaiene (1.49 %) , Lilac aldehyde A (1.46 %), -Pinene (1.39 %), Lilac alcohol A (1.03 %)and -Humulene (1.03 %)were the most abundant volatile compounds released from fresh flowers of Syringa oblata and a total of 48 volatile compounds were identified in this study .The four isomers of lilac alcohol and two isomer lilac aldehyde were the characteristic components of the aroma of fresh flowers of Syringa oblata .Headspace SPME-GC-MS afforded a simple sampling method for the headspace volatile compounds released from fresh flowers of Syringa oblata .[ Ch , 1 fig .1 tab .10 ref .]
2006, 23(2): 163-168.
Abstract:
The classification system of coastal zone vegetation landscape was established being drawn lessons from land type classification in China and Forman and Godron's landscape classification based on vegetation or land usage in the light of the principals , such as the regional one , comprehension and main factor one , human disturb one and administrative level one .According to land usage types and the physiognomy of the vegetation communities , five 1st level landscape types , i .e .vegetation landscape , farmland landscape , wetland landscape , buildings landscape and other landscapes , and five 2nd level vegetation landscape types , i .e .evergreen coniferous forest , broad-leaved forest , human-planting forest , mangrove and scrub and herbosa were classified by using vegetation approach of land attribute classification in landscape ecology , then on basis of the upper layer tree's life form of vegetation landscape , and 39 3rd level vegetation landscape types , such as Vatica mangachapoi- Mischocarpus sundaicusi forest and Ficus microcarpa-Arenga pinnata forest were divided .[ Ch , 2 tab .13 ref .]
The classification system of coastal zone vegetation landscape was established being drawn lessons from land type classification in China and Forman and Godron's landscape classification based on vegetation or land usage in the light of the principals , such as the regional one , comprehension and main factor one , human disturb one and administrative level one .According to land usage types and the physiognomy of the vegetation communities , five 1st level landscape types , i .e .vegetation landscape , farmland landscape , wetland landscape , buildings landscape and other landscapes , and five 2nd level vegetation landscape types , i .e .evergreen coniferous forest , broad-leaved forest , human-planting forest , mangrove and scrub and herbosa were classified by using vegetation approach of land attribute classification in landscape ecology , then on basis of the upper layer tree's life form of vegetation landscape , and 39 3rd level vegetation landscape types , such as Vatica mangachapoi- Mischocarpus sundaicusi forest and Ficus microcarpa-Arenga pinnata forest were divided .[ Ch , 2 tab .13 ref .]
2006, 23(2): 169-173.
Abstract:
There are 205 species of wild pteridophytes in Quzhou .They belong to 36 families and 71 genera .The composition of flora is preliminarily analyzed .They are divided into 12 distribution types and 5 ecological types . Their ornamental value , medicinal value and edible value are studied , and 5 suggestions on development and utilization of them are put forward .[ Ch , 3 tab .12 ref .]
There are 205 species of wild pteridophytes in Quzhou .They belong to 36 families and 71 genera .The composition of flora is preliminarily analyzed .They are divided into 12 distribution types and 5 ecological types . Their ornamental value , medicinal value and edible value are studied , and 5 suggestions on development and utilization of them are put forward .[ Ch , 3 tab .12 ref .]
2006, 23(2): 174-178.
Abstract:
There are 141 families , 662 genera and 1 475 species (including subspecies , varieties and forms)of wild spermatophye in Ruoliaoxian Nature Reserve in Songyang County , Zhejiang Province .The study indicates that the spermatophye flora has rich species , and many endemic and rare plants .Its origin is from far ancientry , and the floristic elements are complex and varied .At generic level , the pantropic type is 20.9 %, the north temperate type is 19.7 %, the east Asia type is 16.1 %, the tropical Asia type is 9.1 %, and east Asia north America disjuncted type is 8.8 %, those types are main elements of the flora .The rate of temperate elements is 52.2 %and the ratio of tropical ones is 45.4 %, so this is a typical subtropical characteristics of the flora with the transitional characters from tropical to temperate .There are more than 80 species of key state protection or endemic to China . [ Ch , 5 tab .14 ref .]
There are 141 families , 662 genera and 1 475 species (including subspecies , varieties and forms)of wild spermatophye in Ruoliaoxian Nature Reserve in Songyang County , Zhejiang Province .The study indicates that the spermatophye flora has rich species , and many endemic and rare plants .Its origin is from far ancientry , and the floristic elements are complex and varied .At generic level , the pantropic type is 20.9 %, the north temperate type is 19.7 %, the east Asia type is 16.1 %, the tropical Asia type is 9.1 %, and east Asia north America disjuncted type is 8.8 %, those types are main elements of the flora .The rate of temperate elements is 52.2 %and the ratio of tropical ones is 45.4 %, so this is a typical subtropical characteristics of the flora with the transitional characters from tropical to temperate .There are more than 80 species of key state protection or endemic to China . [ Ch , 5 tab .14 ref .]
2006, 23(2): 179-187.
Abstract:
Osmanthus fragrans in the municipal flower of Hangzhou City and has been cultivated for ages .It is well-known inland for its large cultivated scale and its high-quality in Hangzhou .The cultivars of traditional cultivated Osmanthus fragrans in Hangzhou are systematically studied and classified , and the taxonomic status of Sijigui is discussed .Results show that there are 6 traditional cultivated cultivar phylads in Hangzhou , which mainly include Osmanthus cooperi , Osmanthus heterophyllus and Osmanthus fragrans etc .In detail , there are 3 frequent cultivars of Osmanthus heterophyllus , and 4 cultivar groups belong to Osmanthus fragrans , including 59 cultivars in Hangzhou (excluding 9 introduced cultivars).In these 59 cultivars , 15 has been recorded , another 38 are new recores and the other 6 are newly named .[ Ch , 1 fig .14 ref .]
Osmanthus fragrans in the municipal flower of Hangzhou City and has been cultivated for ages .It is well-known inland for its large cultivated scale and its high-quality in Hangzhou .The cultivars of traditional cultivated Osmanthus fragrans in Hangzhou are systematically studied and classified , and the taxonomic status of Sijigui is discussed .Results show that there are 6 traditional cultivated cultivar phylads in Hangzhou , which mainly include Osmanthus cooperi , Osmanthus heterophyllus and Osmanthus fragrans etc .In detail , there are 3 frequent cultivars of Osmanthus heterophyllus , and 4 cultivar groups belong to Osmanthus fragrans , including 59 cultivars in Hangzhou (excluding 9 introduced cultivars).In these 59 cultivars , 15 has been recorded , another 38 are new recores and the other 6 are newly named .[ Ch , 1 fig .14 ref .]
2006, 23(2): 188-192.
Abstract:
The street trees in Zhangjiajie City are facing the following problems such as low species diversity , serious plant diseases and insect pests , and lack of native tree species .Considering the resources of native tree species and the cultivation situation of introduced species , the selection of street tree species for Zhangjiajie should highlight the local characteristics and give priority to native tree species .Nineteen primary and secondary species and 17 recommended species of street trees in Zhangjiajie , for example , Michelia floribunda , Cinnamomum septentrionale , Acer oblongum , Magnolia sprenger were put forward .[ Ch , 2 tab .7 ref .]
The street trees in Zhangjiajie City are facing the following problems such as low species diversity , serious plant diseases and insect pests , and lack of native tree species .Considering the resources of native tree species and the cultivation situation of introduced species , the selection of street tree species for Zhangjiajie should highlight the local characteristics and give priority to native tree species .Nineteen primary and secondary species and 17 recommended species of street trees in Zhangjiajie , for example , Michelia floribunda , Cinnamomum septentrionale , Acer oblongum , Magnolia sprenger were put forward .[ Ch , 2 tab .7 ref .]
2006, 23(2): 193-197.
Abstract:
In order to determine the correlation between the degree of landscape fragmentation and the priorityprotection order of the endangered plants peculiar to Eastern Alashan-Western Erdos Area , the endangered plants in Eastern Alashan-Western Erdos Area were studied with the conventional method of sample investigation .Based on the correlative geographical data obtained with the 3S technology , a quantitative calculation of indices such as landscape size and landscape fragmentation was conducted .A comparative analysis of the calculation results and the priority protection orders of all species found out that there was a certain correlation between the results of the indices of the landscape fragmentation of suitable habitats and the priority protection orders of the species .The findings showed that a suitable landscape fragmentation equation based on the biological properties and characteristics of species in an area could accurately reflect the endangered degree of endangered plants .[ Ch , 6 tab .14 ref .]
In order to determine the correlation between the degree of landscape fragmentation and the priorityprotection order of the endangered plants peculiar to Eastern Alashan-Western Erdos Area , the endangered plants in Eastern Alashan-Western Erdos Area were studied with the conventional method of sample investigation .Based on the correlative geographical data obtained with the 3S technology , a quantitative calculation of indices such as landscape size and landscape fragmentation was conducted .A comparative analysis of the calculation results and the priority protection orders of all species found out that there was a certain correlation between the results of the indices of the landscape fragmentation of suitable habitats and the priority protection orders of the species .The findings showed that a suitable landscape fragmentation equation based on the biological properties and characteristics of species in an area could accurately reflect the endangered degree of endangered plants .[ Ch , 6 tab .14 ref .]
2006, 23(2): 198-201.
Abstract:
Taking Mount South Tianmu as an example , it was found that the following measures of planning mountainous non-optimal tourism district could be adopted :using the tourism resources in a different and better way ;making full use of the tourism resources outside the scenic spot ;cooperating with the scenic spots nearby to attract more tourists ;improving the value of the tourism resources by shifting sightseeing scenes ;expanding and intensifying the characteristics of the scenic spot to make it more recognizable ;constructing tourism facilities to enrich the tourism resources ;designing landscape sight with the methods of landscape ecology to make it more unique .All these measures could facilitate the turning of the non-optimal tourism district into the optimal tourism district and make it more valuable .[ Ch , 1 tab .10 ref .]
Taking Mount South Tianmu as an example , it was found that the following measures of planning mountainous non-optimal tourism district could be adopted :using the tourism resources in a different and better way ;making full use of the tourism resources outside the scenic spot ;cooperating with the scenic spots nearby to attract more tourists ;improving the value of the tourism resources by shifting sightseeing scenes ;expanding and intensifying the characteristics of the scenic spot to make it more recognizable ;constructing tourism facilities to enrich the tourism resources ;designing landscape sight with the methods of landscape ecology to make it more unique .All these measures could facilitate the turning of the non-optimal tourism district into the optimal tourism district and make it more valuable .[ Ch , 1 tab .10 ref .]
2006, 23(2): 202-206.
Abstract:
The urban river was distinguished with the country river , and controlled by the urban environment , water conservancy and ecology factors in the river engineering . After studied about urban waterfront landscape design in Nanjing and abroad , this paper talked about the phenomenon of inside waterfront design , such as the harder of landscape , formality and heterogeneous space for outdoor activities .It suggested that the urban river engineering should take residents'day-to-day demand and the river's value and potentiality as the precondition , considering about urban land condition and the function of controlling the flood , catering to environment's endurance .Based on the ecological engineering methods , this paper is launching the purpose of protecting and restoring the approxnatural form of urban waterfront landscape , returning the environment-friendly ecological urban waterfront outdoor space to people .[ Ch , 11 ref .]
The urban river was distinguished with the country river , and controlled by the urban environment , water conservancy and ecology factors in the river engineering . After studied about urban waterfront landscape design in Nanjing and abroad , this paper talked about the phenomenon of inside waterfront design , such as the harder of landscape , formality and heterogeneous space for outdoor activities .It suggested that the urban river engineering should take residents'day-to-day demand and the river's value and potentiality as the precondition , considering about urban land condition and the function of controlling the flood , catering to environment's endurance .Based on the ecological engineering methods , this paper is launching the purpose of protecting and restoring the approxnatural form of urban waterfront landscape , returning the environment-friendly ecological urban waterfront outdoor space to people .[ Ch , 11 ref .]
2006, 23(2): 207-216.
Abstract:
Forestry soil organic carbon is an important component of the global carbon cycle , and it has direct effects on the global carbon balance .The estimated methods of soil carbon pool had important function to exactly estimate carbon pool , to reflect soil fertility , to protect biological diversity .This paper particularly summarized carbon reserves and carbon distributing of forestry soil , introduced all kinds of estimated methods on forestry soil's carbon, analyzed character and excellence and disadvantage of each method , indicated each method had its restricted condition and should be improved , methods of soil taxonomy , holdridge zones were most used , method of GIS was used recently , model was early used but was not mature ;aiming at error of methods estimated , statistically analyzed error estimated in order to improved precision , finally expounded methods released of forestry soil and summarized harvest on this aspect .On this base , this paper summed up and analyzed existed problem on research methods .[ Ch , 71 ref .]
Forestry soil organic carbon is an important component of the global carbon cycle , and it has direct effects on the global carbon balance .The estimated methods of soil carbon pool had important function to exactly estimate carbon pool , to reflect soil fertility , to protect biological diversity .This paper particularly summarized carbon reserves and carbon distributing of forestry soil , introduced all kinds of estimated methods on forestry soil's carbon, analyzed character and excellence and disadvantage of each method , indicated each method had its restricted condition and should be improved , methods of soil taxonomy , holdridge zones were most used , method of GIS was used recently , model was early used but was not mature ;aiming at error of methods estimated , statistically analyzed error estimated in order to improved precision , finally expounded methods released of forestry soil and summarized harvest on this aspect .On this base , this paper summed up and analyzed existed problem on research methods .[ Ch , 71 ref .]
2006, 23(2): 217-223.
Abstract:
The research literatures on the effects of tourists'activities on vegetation since the 1970s were reviewed . It was concluded that tourists'activities might lead to vegetation's poor seed germination and difficult survival , poor physiology and shape , lower height and stunt , poor health and energy , late blooming and fruiting , bad renewal and transfer , less varieties , bad floristic diversity and bad flora structure .On the basis of the above influences , it was found that the factors affecting the vegetation included the habitat conditions , succession stages , adaptability , number of tourists , way of use and etc .[ Ch , 76 ref .]
The research literatures on the effects of tourists'activities on vegetation since the 1970s were reviewed . It was concluded that tourists'activities might lead to vegetation's poor seed germination and difficult survival , poor physiology and shape , lower height and stunt , poor health and energy , late blooming and fruiting , bad renewal and transfer , less varieties , bad floristic diversity and bad flora structure .On the basis of the above influences , it was found that the factors affecting the vegetation included the habitat conditions , succession stages , adaptability , number of tourists , way of use and etc .[ Ch , 76 ref .]
2006, 23(2): 224-227.
Abstract:
The location of Donghu Campus of Zhejiang Forestry College was studied from the perspectives of landscape choice and modem landscape ecology .Surrounded by the beautiful water and green mountains , the campus was an ideal place for harmonious living and studying .The pioneering and perseverant spirits of Zhejiang Forest College and the progressive and diligent spirits of the local people could be traced to the same origin . Integrating the tradition and the modernization was a necessary way to the construction of spiritual civilization and the landscape sight with Chinas unique characteristics .[ Ch , 5 ref .]
The location of Donghu Campus of Zhejiang Forestry College was studied from the perspectives of landscape choice and modem landscape ecology .Surrounded by the beautiful water and green mountains , the campus was an ideal place for harmonious living and studying .The pioneering and perseverant spirits of Zhejiang Forest College and the progressive and diligent spirits of the local people could be traced to the same origin . Integrating the tradition and the modernization was a necessary way to the construction of spiritual civilization and the landscape sight with Chinas unique characteristics .[ Ch , 5 ref .]
2006, 23(2): 228-231.
Abstract:
An experiment on the taproot cutting of three-year-old seedlings of Carya cathayensis which were treated with different types of hormones of different mass fractions was carried out to accelerate their vegetative propagation and keep their excellent properties .The results indicated that the adventitious roots were developed from the callus , and the rooting rate , the number of new roots , the length of new roots and the diameter of new roots could be improved effectively with the treatment of 50 -100 mgkg-1NAA for 18 hours.However , 300 mgkg-1 auxin NAA could inhibit the formation of new roots .The cytokinin BA brought bad or no effects on the rooting of Carya cathayensis .The sources of root cutting and the measures for improving rooting rate were also studied .[ Ch , 6 tab . 9 ref .]
An experiment on the taproot cutting of three-year-old seedlings of Carya cathayensis which were treated with different types of hormones of different mass fractions was carried out to accelerate their vegetative propagation and keep their excellent properties .The results indicated that the adventitious roots were developed from the callus , and the rooting rate , the number of new roots , the length of new roots and the diameter of new roots could be improved effectively with the treatment of 50 -100 mgkg-1NAA for 18 hours.However , 300 mgkg-1 auxin NAA could inhibit the formation of new roots .The cytokinin BA brought bad or no effects on the rooting of Carya cathayensis .The sources of root cutting and the measures for improving rooting rate were also studied .[ Ch , 6 tab . 9 ref .]
2006, 23(2): 232-235.
Abstract:
Using NAA and ABT to treat Spathipyllum floribundum , Philodendron `Imperial Green' , Cordyline fruticosa , Clivia miniata , Anthurium clarinervium , in order to inquire irito the influence of growth regulators on the growth of plants in hydroponic culture after washing roots and transplanting .The results show that 0.02 mgL-1 of ABT No.3 can increase the quantity of active roots (evenly 2.6 roots more than that of the control) and reduce rotroots .Through cultivating the five hydroponic plants in three nutrient solutions which are different ratios of N , P and K to chose best hydroponic solution .Taking the growth of the leaves , the roots and the whole plants into account , the nutrient solution which the ratio of N , P , K is 20∶1∶20 is the best to the five plants .The plants shows that the roots growing vigrous , fibrous roots being many , new leaves growing fast , the area of leave being big , and the individual plant being heavy cultivated in the best nutrient solution .[ Ch , 3 tab .8 ref .]
Using NAA and ABT to treat Spathipyllum floribundum , Philodendron `Imperial Green' , Cordyline fruticosa , Clivia miniata , Anthurium clarinervium , in order to inquire irito the influence of growth regulators on the growth of plants in hydroponic culture after washing roots and transplanting .The results show that 0.02 mgL-1 of ABT No.3 can increase the quantity of active roots (evenly 2.6 roots more than that of the control) and reduce rotroots .Through cultivating the five hydroponic plants in three nutrient solutions which are different ratios of N , P and K to chose best hydroponic solution .Taking the growth of the leaves , the roots and the whole plants into account , the nutrient solution which the ratio of N , P , K is 20∶1∶20 is the best to the five plants .The plants shows that the roots growing vigrous , fibrous roots being many , new leaves growing fast , the area of leave being big , and the individual plant being heavy cultivated in the best nutrient solution .[ Ch , 3 tab .8 ref .]
