Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province

ZHANG Wang; CAO Guo-xing; LIU Guang-hua; LIU Xin

Volume 25 Issue 4

Aug. 2008

Turn off MathJax

Article Contents

Article Navigation > Journal of Zhejiang A&F University > 2008 > 25(4): 451-457

ZHANG Wang, CAO Guo-xing, LIU Guang-hua, LIU Xin. Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province[J]. Journal of Zhejiang A&F University, 2008, 25(4): 451-457.

Citation:

ZHANG Wang, CAO Guo-xing, LIU Guang-hua, LIU Xin. Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province[J]. Journal of Zhejiang A&F University, 2008, 25(4): 451-457.

Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province

1.
Forestry and Horticulture College，Sichuan Agricultural University，Ya’an 625014，Sichuan，China

More Information

Corresponding author: CAO Guo-xing
Publish Date: 2008-08-20

Abstract

Davidia involucrata is a relic species of paleotropical kingdom in Tertiary period，belonging to Davidiaceae with a single genus. In recent years，the increase of regional developing projects has led to a sharp decrease of this species in natural population. The population characteristics of D. involucrata were discussed here，and the dynamic changes of its population were analyzed systematically，in order to provide basic data for further study，and to probe into conservation policy on this species. Quadrates with a contiguous grid were used to collect field data of D. involucrata at Labahe Nature Reserve of Sichuan Province. Size and height class structures were established；a time-specific life table was produced；and survivorship curves were drawn. A t-test of the variance/mean （v/m） ratio，the negative binomial parameter，the mean crowding index，and the patchiness index were used to analyze the distribution pattern and dynamics. The results showed：（1） the population structure of the D. involucrata population was a inverse-pyramid type. （2）The structure of D. involucrata population was declining due to a lack of seedlings. （3） Also，the main regeneration mode of D. involucrata was asexual reproduction. （4）From early age to old age，the population was first characterized as unstable，then stable，and finally degraded with a type Ⅲ Deevey Curve describing survival. （5）Generally，the D. involucrata population was clumpy，and the aggregation intensity tended to decrease from the sapling to the mature tree stage，the aggregation intensity also changed with block sizes. The results above indicated that the interaction between biological and ecological properties mainly decided the spatial population structure and distribution pattern. ［Ch，3 fig. 5 tab. 22 ref.］
- forest ecology,
- Davidia involucrata,
- population structure,
- population dynamic,
- distribution pattern,
- aggregation intensity,
- Labahe Nature Reserve of Sichuan Province

Relative Article

[1]	SONG Sijing, DING Shan, PANG Chunmei, ZHENG Xiao, WANG Tong, YU Shuquan. Population structure and spatial distribution pattern of Cyclobalanopsis gracilis in the evergreen and deciduous broad-leaved forest in Mount Tianmu . Journal of Zhejiang A&F University, 2023, 40(5): 1073-1081. doi: 10.11833/j.issn.2095-0756.20220784
[2]	ZHANG Zhongzhao, XIE Wenyuan, ZHANG Peilin. Community characteristics of Sinocalycanthus chinensis in Dalei Mountains of Tiantai County . Journal of Zhejiang A&F University, 2021, 38(2): 262-270. doi: 10.11833/j.issn.2095-0756.20200349
[3]	ZHANG Zhonghui, GUO Jianbin, WANG Yanhui, WANG Xiao. Population structure and spatial distribution pattern of Quercus wutaishanica in Liupan Mountains . Journal of Zhejiang A&F University, 2021, 38(6): 1091-1099. doi: 10.11833/j.issn.2095-0756.20200707
[4]	ZHOU Saixia, GAO Puxin, PAN Fuxing, LONG Jing, HU Yunan, LIU Xiangping, PENG Yansong. Natural population distribution pattern of Sinojackia rehderiana in an evergreen broadleaf forest . Journal of Zhejiang A&F University, 2020, 37(2): 220-227. doi: 10.11833/j.issn.2095-0756.2020.02.004
[5]	HU Shengke, LIU Chang, WEI Pujie, LI Mengxi, HU Die. Community characteristics of the wild Phoebe and Machilus plants in Yuan’an County, Hubei Province . Journal of Zhejiang A&F University, 2020, 37(4): 702-709. doi: 10.11833/j.issn.2095-0756.20190428
[6]	ZHANG Long, YAN Jing, SHAO Xuexin. Vegetation composition and distribution pattern of Wangdongyang Subalpine Wetland in Jingning County, Zhejiang Province . Journal of Zhejiang A&F University, 2019, 36(3): 501-506. doi: 10.11833/j.issn.2095-0756.2019.03.010
[7]	LUO Chenglong, XU Zhenghui, XIONG Zhongping, QI Biao, YUAN Dingyu, RAN Maojun. Distribution patterns of ant species from Wanglang Nature Reserve and adjacent areas of Sichuan Province . Journal of Zhejiang A&F University, 2019, 36(4): 638-645. doi: 10.11833/j.issn.2095-0756.2019.04.002
[8]	LIU Yilai, WANG Jianghong, ZHANG Jing, ZHU Danni, MAO Jiajun, ZHOU Xiang. Influence of aphid-specific pathogen Conidiobolus obscurus on population dynamics of bamboo aphids and the aphid-control effect . Journal of Zhejiang A&F University, 2017, 34(5): 907-914. doi: 10.11833/j.issn.2095-0756.2017.05.018
[9]	WANG Yang, LENG Yanzhi, SU Changjiang, SONG Congwen, CHENG Dehua, CAO Yingnan, ZHANG Min, FU Cuilin. Spatial structure and distribution pattern of natural Toona ciliata populations in the Enshi Region . Journal of Zhejiang A&F University, 2016, 33(1): 17-25. doi: 10.11833/j.issn.2095-0756.2016.01.003
[10]	CAO Jing, YANG Tonghui, ZHANG Jianhong, XIA Chencheng, JIANG Xiaoli, DA Liangjun. Population structure and regeneration types of Ilex spp. in Tiantong National Forest Park, Zhejiang Province . Journal of Zhejiang A&F University, 2015, 32(1): 76-83. doi: 10.11833/j.issn.2095-0756.2015.01.011
[11]	WANG Jing, WEI Xinliang, XU Jian, FAN Peipei. Spatial distribution patterns of a coniferous-broadleaved mixed forest in Mount Tianmu, China . Journal of Zhejiang A&F University, 2014, 31(5): 668-675. doi: 10.11833/j.issn.2095-0756.2014.05.002
[12]	LI Yan, LI Dengwu, HAN Dongchen. Population dynamics of Picea crassifolia on the eastern slope of Helan Mountain . Journal of Zhejiang A&F University, 2014, 31(1): 50-56. doi: 10.11833/j.issn.2095-0756.2014.01.008
[13]	DING Xuejiao, HAN Hong, PANG Caiju, MA Yuxin, CUI Dalian, FAN Caicai. Spatial distribution pattern with fractal theory for Carex kobomugi and Parapholis incurva populations . Journal of Zhejiang A&F University, 2013, 30(2): 220-225. doi: 10.11833/j.issn.2095-0756.2013.02.010
[14]	ZHANG Zhi-hua, WEI Xin-liang, TANG Meng-ping, LUO Wen-jian, WANG Jing. Structural characteristics of Liquidambar formosana for a mixed coniferous-broadleaf forest in Mount Tianmu . Journal of Zhejiang A&F University, 2012, 29(6): 867-874. doi: 10.11833/j.issn.2095-0756.2012.06.010
[15]	CHEN Xiao-rong, LI Le, XIA Jia-tian, YANG Xu, WANG Wei, DING Bing-yang. Population structure and distribution of Fagus lucida in the Baishanzu forest . Journal of Zhejiang A&F University, 2012, 29(5): 647-654. doi: 10.11833/j.issn.2095-0756.2012.05.002
[16]	YOU Hai-mei, KOIKE Fumito. Population dynamics of Oxalis griffithii using the Lefkovitch matrix model . Journal of Zhejiang A&F University, 2011, 28(1): 66-71. doi: 10.11833/j.issn.2095-0756.2011.01.011
[17]	CAO Yong-hui, XIAO Jiang-hua, LI Ying-chun, CHEN Shuang-lin, WU Ming. Population structure and spatial patterns of dominant populations in Illicium lanceolatum-Choerospondias axiliaris community in Tiantong，Zhejiang Province . Journal of Zhejiang A&F University, 2009, 26(1): 44-51.
[18]	JIN Ze-xin. Dominant population structure and trend of deciduous broad-leaved forest in the Tiantai Mountains of Zhejiang . Journal of Zhejiang A&F University, 2001, 18(3): 245-251.
[19]	Wu Chengzhen, Hong Wei, Lin Cheng lai. Study on quantitative dynamics of Pinus taiwanensis population. . Journal of Zhejiang A&F University, 1998, 15(3): 274-279.
[20]	Zhu Zhijian, Tu Yonghai, Xu Sishan, Liu Zhenyong. Spatial Distribution Pattern of Hippota dorsalis (Stal) and Its Application . Journal of Zhejiang A&F University, 1993, 10(1): 115-121.

References
Proportional views

通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

Get Citation

PDF

XML

Article views(5228) PDF downloads(247) Cited by()

Proportional views

Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province

1. Forestry and Horticulture College，Sichuan Agricultural University，Ya’an 625014，Sichuan，China

Corresponding author: CAO Guo-xing

Publish Date: 2008-08-20

Key words:

forest ecology /
Davidia involucrata /
population structure /
population dynamic /
distribution pattern /
aggregation intensity /
Labahe Nature Reserve of Sichuan Province

Abstract: Davidia involucrata is a relic species of paleotropical kingdom in Tertiary period，belonging to Davidiaceae with a single genus. In recent years，the increase of regional developing projects has led to a sharp decrease of this species in natural population. The population characteristics of D. involucrata were discussed here，and the dynamic changes of its population were analyzed systematically，in order to provide basic data for further study，and to probe into conservation policy on this species. Quadrates with a contiguous grid were used to collect field data of D. involucrata at Labahe Nature Reserve of Sichuan Province. Size and height class structures were established；a time-specific life table was produced；and survivorship curves were drawn. A t-test of the variance/mean （v/m） ratio，the negative binomial parameter，the mean crowding index，and the patchiness index were used to analyze the distribution pattern and dynamics. The results showed：（1） the population structure of the D. involucrata population was a inverse-pyramid type. （2）The structure of D. involucrata population was declining due to a lack of seedlings. （3） Also，the main regeneration mode of D. involucrata was asexual reproduction. （4）From early age to old age，the population was first characterized as unstable，then stable，and finally degraded with a type Ⅲ Deevey Curve describing survival. （5）Generally，the D. involucrata population was clumpy，and the aggregation intensity tended to decrease from the sapling to the mature tree stage，the aggregation intensity also changed with block sizes. The results above indicated that the interaction between biological and ecological properties mainly decided the spatial population structure and distribution pattern. ［Ch，3 fig. 5 tab. 22 ref.］

Population structure and distribution pattern of Davidia involucrata at Labahe Nature Reserve of Sichuan Province

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Related

Proportional views