| 紫杉所在群落梯度与环境梯度的综合研究 |
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| 引用本文： | 吴榜华 李德志. 紫杉所在群落梯度与环境梯度的综合研究[J]. 吉林林学院学报, 1993, 9(1): 1-6 |
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| 作者姓名： | 吴榜华 李德志 |
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| 作者单位： | 吉林林学院科研生产处，吉林林学院科研生产处，吉林林学院科研生产处，吉林林学院科研生产处 |
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| 摘 要： | 本文运用群落梯度与环境梯度综合分析的方法研究了紫杉种群所在的群落结构特性,进行环境梯度分析时所选取的因子是群落内的光照度、林下土壤的pH、容重、速效氯、速效磷、速效钾以及土壤有机质,分析了群落内各主要树木种群的重要值沿环境梯度的分布状况及其成因,运用群落相似性指数(SI)计算了紫杉所在群落中各样带间的相似程度,然后运用极点排序法(PO)进行了三维排序,最后分析了三维立体模型的生态学机理。
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| 关 键 词： | 紫杉 群落梯度 环境梯度 排序 重要值 相似系数 |
The Comprehensive Study on the Gradients of Environment and the Community in Which Taxus Cuspidata Lives in |
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| Wu Banghu Li Dezhi Zhang Qichang Zang Runguo. The Comprehensive Study on the Gradients of Environment and the Community in Which Taxus Cuspidata Lives in[J]. , 1993, 9(1): 1-6 |
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| Authors: | Wu Banghu Li Dezhi Zhang Qichang Zang Runguo |
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| Affiliation: | Research and Production Management Section of Jilin Forestry College |
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| Abstract: | Applying the method of comprehensive analysis of community and environmental gradients, the characteristics of the community structure in which T. cuspidata lives in was researched, The factors that were chosen in the course of analysing the environmental gradient are illuminance in the community, pH value of the forest soil, bulk density, available N, P, K and organic matter in the soil. The distribution condition and its reason of main tree populations' important values along the environmental gradient were analysed. Applying SI, the similarity indeces between the sample belts were calculated, and using the method of PO, the 3-D model and its ecological mechanism were established and analysed. |
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| Keywords: | Taxus Cuspidata Community Gradient Environmental Gradient Ordination Important Value Similarity Index |
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