摘要
用灰色系统理论的关联度分析对南充近郊退化灌丛草坡群落的物种多样性及其与生态因子的相关性进行了研究．基本方法是按典型样方法进行实地取样测定．结果表明南充近郊退化灌丛草坡群落的８个因子对４个多样性指数即香农指数Ｈ′，辛普森指数λ，物种丰富度指数Ｎ０。
Preliminary study on relationship between species diversity and ecological factors of degraded shrub and grass communities distributed within the suburbs of Nanchong in terms of the Grey System Theory is carried out with field sampling as the basic method. The result shows that, all of 4 species diversity indexes, i.e.,ShannonWeiner index(H′),simpson index(λ), species richness(s) and evenness(E), are affected by the eight ecological factors. The series run as follows:disturbances>pH of soil solution>thickness of the soil>water content of the soil>degree of the slope>lightness>humidity>elevation.
出处
《四川师范学院学报（自然科学版）》
1998年第2期189-192,共4页
Journal of Sichuan Teachers College(Natural Science)
关键词
退化灌丛草
物种多样性
灰色关联度
群落
degraded shrub and herbaceous communities
species diversity
environmental factors
grey system
relatedness.
