天目山常绿阔叶林优势种群竞争的数量关系

江挺; 汤孟平

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天目山常绿阔叶林优势种群竞争的数量关系

江挺 , 汤孟平

文章导航 > 浙江农林大学学报 > 2008 > 25(4): 444-450

江挺, 汤孟平. 天目山常绿阔叶林优势种群竞争的数量关系[J]. 浙江农林大学学报, 2008, 25(4): 444-450.

引用本文:

江挺, 汤孟平. 天目山常绿阔叶林优势种群竞争的数量关系[J]. 浙江农林大学学报, 2008, 25(4): 444-450.

JIANG Ting, TANG Meng-ping. Quantitative relationships with competition of dominant tree populations in an evergreen broad-leaved forest on Mount Tianmu[J]. Journal of Zhejiang A&F University, 2008, 25(4): 444-450.

Citation:

JIANG Ting, TANG Meng-ping. Quantitative relationships with competition of dominant tree populations in an evergreen broad-leaved forest on Mount Tianmu[J]. Journal of Zhejiang A&F University, 2008, 25(4): 444-450.

天目山常绿阔叶林优势种群竞争的数量关系

江挺^1,2,
汤孟平^2,

1.
浙江省嘉兴市南湖区农业经济局，浙江嘉兴 314051;
2.
浙江林学院环境科技学院，浙江临安 311300

详细信息

通信作者: 汤孟平

中图分类号: S718.5

Quantitative relationships with competition of dominant tree populations in an evergreen broad-leaved forest on Mount Tianmu

JIANG Ting^1,2,
TANG Meng-ping^2
,

1.
Agricultural Economic Bureau of South Lake Region，Jiaxing 314051，Zhejiang，China;
2.
School of Environmental Sciences and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

More Information

Corresponding author: TANG Meng-ping

摘要: 采用相邻网格法调查获取数据，应用优势度分析法，确定3个常绿阔叶林优势种群，占总株数的71.6%，占总胸高断面积的44.6%。利用Hegyi简单竞争指数研究优势种群竞争的方法，分析了天目山国家级自然保护区内的常绿阔叶林优势种群在群落中的竞争状况。结果表明：100 m×100 m样地内，胸径在5 cm以上的优势种群间存在较剧烈竞争，常绿阔叶优势种群＞非常绿阔叶优势种群。常绿阔叶优势种群的竞争更为显著，其种内竞争强度大小为：细叶青冈Cyclobalanopsis myrsinaefolia＞青冈Cyclobalanopsis glauca＞短尾柯Lithocarpus brevicaudatus；种间竞争强度大小为：细叶青冈＞青冈＞短尾柯；以任一常绿阔叶优势种群为对象木时，均有种内竞争＞种间竞争。竞争指数与对象木胸径大小符合幂函数关系，并达到显著水平，优势种群种内、种间的竞争强度随着对象木胸径的增大而下降，并维持在较低的水平。当对象木胸径达到20 cm后，竞争强度变化不大。图1表3参15
- 森林生态学 /
- 常绿阔叶林 /
- 优势种群 /
- 竞争指数 /
- 种内竞争 /
- 种间竞争 /
- 天目山
Abstract: Adjacent grid points were used to obtain data for an analysis of dominant degree. Then，with a plot size of 100 m×100 m，Hegyi’s competition index model for individual trees was used to determine competition within dominant tree populations in an evergreen broad-leaved forest of National Nature Reserve of Mount Tianmu. We investigate trees greater than 5 cm diameter at breast-height（DBH），and determine the species and individual number. Results showed that there were 1 794 trees greater than 5 cm DBH，82 species. From the analysis of dominant degrees showed it contained 8 dominant tree species which were 1 074 individuals in all，Cyclobalanopsis myrsinaefolia，Cyclobalanopsis glauca，and Liquidambar formosana of evergreen broad-leaved trees，and Liquidambar formosana，Cunninghamia lanceolata，Quercus fabri，Torreya grandis，and Pistacia chinensis of non-evergreen broad-leaved trees. The three evergreen broad-leaved dominant populations，had a total plant number of about 71.6% and a total basal area at breast-height of about 44.6%. In the plot，for trees greater than 5 cm DBH，competition among the 8 dominant populations revealed great competition，and an evergreen broad-leaved populations exhibited greater competition than non-broad-leaved populations. Competition in evergreen broad-leaved dominant opulations for intraspecies and interspecies had an intensity order of C. myrsinaefolia ＞ C. glauca ＞ L. formosana with the interspecies competition greater than intraspecies. Competition intensity and DBH of a tree had an exponential relationship （P＜0.01） by regression analysis. Competition intensity of a dominant tree population decreased when tree DBH increased. When tree DBH reached 20 cm，the change range of competition intensity was narrow. Therefore，we can adjust the community structure and succession courses for evergreen broad-leaved forest according to this characteristic for effective protection and sustainable management. ［Ch，1 fig. 3 tab. 15 ref.］
- forest ecology /
- evergreen broad-leaved forest /
- dominant population /
- competition index /
- intraspecific competition /
- interspecific competition /
- Mount Tianmu

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天目山常绿阔叶林优势种群竞争的数量关系

江挺^1,2,
汤孟平^2,

1. 浙江省嘉兴市南湖区农业经济局，浙江嘉兴 314051;

2. 浙江林学院环境科技学院，浙江临安 311300

通信作者: 汤孟平

刊出日期: 2008-08-20

中图分类号: S718.5

关键词:

摘要: 采用相邻网格法调查获取数据，应用优势度分析法，确定3个常绿阔叶林优势种群，占总株数的71.6%，占总胸高断面积的44.6%。利用Hegyi简单竞争指数研究优势种群竞争的方法，分析了天目山国家级自然保护区内的常绿阔叶林优势种群在群落中的竞争状况。结果表明：100 m×100 m样地内，胸径在5 cm以上的优势种群间存在较剧烈竞争，常绿阔叶优势种群＞非常绿阔叶优势种群。常绿阔叶优势种群的竞争更为显著，其种内竞争强度大小为：细叶青冈Cyclobalanopsis myrsinaefolia＞青冈Cyclobalanopsis glauca＞短尾柯Lithocarpus brevicaudatus；种间竞争强度大小为：细叶青冈＞青冈＞短尾柯；以任一常绿阔叶优势种群为对象木时，均有种内竞争＞种间竞争。竞争指数与对象木胸径大小符合幂函数关系，并达到显著水平，优势种群种内、种间的竞争强度随着对象木胸径的增大而下降，并维持在较低的水平。当对象木胸径达到20 cm后，竞争强度变化不大。图1表3参15

English Abstract

Quantitative relationships with competition of dominant tree populations in an evergreen broad-leaved forest on Mount Tianmu

JIANG Ting^1,2,
TANG Meng-ping^2,

1. Agricultural Economic Bureau of South Lake Region，Jiaxing 314051，Zhejiang，China;

2. School of Environmental Sciences and Technology，Zhejiang Forestry College，Lin’an 311300，Zhejiang，China

Corresponding author: TANG Meng-ping

Publish Date: 2008-08-20

Keywords:

Abstract: Adjacent grid points were used to obtain data for an analysis of dominant degree. Then，with a plot size of 100 m×100 m，Hegyi’s competition index model for individual trees was used to determine competition within dominant tree populations in an evergreen broad-leaved forest of National Nature Reserve of Mount Tianmu. We investigate trees greater than 5 cm diameter at breast-height（DBH），and determine the species and individual number. Results showed that there were 1 794 trees greater than 5 cm DBH，82 species. From the analysis of dominant degrees showed it contained 8 dominant tree species which were 1 074 individuals in all，Cyclobalanopsis myrsinaefolia，Cyclobalanopsis glauca，and Liquidambar formosana of evergreen broad-leaved trees，and Liquidambar formosana，Cunninghamia lanceolata，Quercus fabri，Torreya grandis，and Pistacia chinensis of non-evergreen broad-leaved trees. The three evergreen broad-leaved dominant populations，had a total plant number of about 71.6% and a total basal area at breast-height of about 44.6%. In the plot，for trees greater than 5 cm DBH，competition among the 8 dominant populations revealed great competition，and an evergreen broad-leaved populations exhibited greater competition than non-broad-leaved populations. Competition in evergreen broad-leaved dominant opulations for intraspecies and interspecies had an intensity order of C. myrsinaefolia ＞ C. glauca ＞ L. formosana with the interspecies competition greater than intraspecies. Competition intensity and DBH of a tree had an exponential relationship （P＜0.01） by regression analysis. Competition intensity of a dominant tree population decreased when tree DBH increased. When tree DBH reached 20 cm，the change range of competition intensity was narrow. Therefore，we can adjust the community structure and succession courses for evergreen broad-leaved forest according to this characteristic for effective protection and sustainable management. ［Ch，1 fig. 3 tab. 15 ref.］

江挺, 汤孟平. 天目山常绿阔叶林优势种群竞争的数量关系[J]. 浙江农林大学学报, 2008, 25(4): 444-450.

引用本文:

江挺, 汤孟平. 天目山常绿阔叶林优势种群竞争的数量关系[J]. 浙江农林大学学报, 2008, 25(4): 444-450.