作　　者： ; ;

机构地区： 南京大学生命科学学院生物科学与技术系

出　　处： 《武汉植物学研究》 1997年第2期143-150,共8页

摘　　要： 利用30个样方和90个土样的数据，采用多元线性逐步回归分析，分别探讨了乔木种数、灌木种数、草本植物种数、总种数、总个体数、辛柏森指数和香农一魏耐指数等多样性指数及其发育速率与土壤的厚度、含水量、酸碱度、盐基总量、有效氮、速效磷和钙镁总量的相关性。除个别指数外，大多数多样性指数均受特定的土壤因子组合的影响，辛柏森和香农-魏耐综合多样性指数之间也表现出显著的差异。结果也显示土壤的酸碱度、厚度、含水量、有效氮和速效磷，对紫金山次生森林群落多样性的维持和发育起重要的作用。 Based on the data of 30 quadrats and 90 soil samples, the authors studied the relationships between the species diversity, which included number of trees, of shrubs, of herbs, total species number, total individual number, Simpson index and Shannon- Wienner Index, and the soil factors, which included soil depth, humidity, acidity, total ions of soil,available nitrogen, quick-acting phosphorus and total capacity of calcium & magnesium, using stepwise multilinear regression analyses. Besides a few of indices,most of the diversity indices were affected by the specific combination of soil factors, obvious differences between the regression correlations of Simpson index and those of ShannonWienner index had been found. The results also showed that soil acidity, depth, humidity, available nitrogen and quick-acting phosphorus of soil had important function on maintaining and developing of the diversity of the secondary forest communities on Zijin mountain.

关 键 词： 森林生态学 森林群落 生物多样性 土壤因子

领　　域： [农业科学]