湖南舜皇山常绿阔叶林群落主要结构特征--Ⅳ.乔木物种多样性

生物多样性是当代生态学研究的三大重点领域之一,而物种多样性既是遗传基因的载体,又是生态系统的核心组成部分,所以它在生物多样性研究中所占地位最为重要.以湖南舜皇山常绿阔叶林为研究对象,通过3个生境梯度,33个中样方,99个小样方的叠加和群落重构资料,采用7个测度公式,对物种多样性开展了研究.结果表明舜皇山常绿阔叶乔物种比较丰富,丰富度指数为11.006,信息度指数为3.666 1;α多样性指标中的丰富度指数dGL和Shanmon-Wiener指数,以及β多样性指标中的群落系数和欧氏距离,能较好地反映亚热带常绿阔叶林乔木物种多样性的特征.

A Synthetic Study of Evergreen and Broadleaf Trees in Shunhuang Mountain of Hunan Province:Ⅳ.Study of Species Diversity

Bio-diversity is one of the three important fields in ecology research;species diversity acts as an important role in bio-diversity research because it is not only the carrier of genic but also the core part of ecology system.In this article we take green broadleaf forest at Shunhuang Mount in Hunan Province for example and study the species diversity based on the information by cumulating 3 habitat grads,33 middle spots and 99 small spots and by adopting 7 measuring formulas.The result shows that: the species diversity of green broad-leaf forest at Shunhuang Mount is abundant and the index of abundance is 11.006;the index of information is 0.298 4.There are four indexes or coefficients in diversity index,which can efficiently reflect the characteristics of bio-diversity of green broad-leaf forest,and are the Gleason's and Shanmon-Wiener's index of abundance index,the coefficient of community and ED.