南亚热带森林土壤动物群落多样性研究

以鼎湖山为代表，研究南亚热带常绿阔叶林土壤动物群落的多样性。首先比较了几种多样性测度的效果，由于Ｇｏｗｅｒ系数和作者１９９０年提出的ＤＧ指数都是基于各物种在群落中都有同等独立性，宜在不同群落间进行种类比较的假设，因而对于复杂的土壤动物群落多样性测度可以获得比较贴切的结果，但ＤＧ指数可以为多个群落同时比较，计算也简单，其次比较了中亚热带的资料，表明南亚热带土壤动物具有的多样性和更多的热带成分，两地区

SOIL ANIMAL COMMUNITY DIVERSITY IN THE FOREST OF THE SOUTHERN SUBTROPICAL REGION,CHINA

Soil animal community diversity in Dinghushan Nature Reserve,as an example of the southern subtropical region of China were studied.the diversity measuring methods Gower coefficient, H' index and DG index(which was suggested by LIAO in1990)etc.were compared.The Gower coefficient and DG index were proposed on base of the hypothesis that every species has equal independence and importance in the community,and can be compared intercommunitily.So measurement of the complicated soil animal community diversity may be carried out.The calculation of DG index is easy and simple.There are bigger soil animal community diversity and more tropical characteristics in southern subtropical region of China than in middle subtropical region of China.There is soil animal community composition variance between the two regions.The soil animal community composition in varied conservation degrees were compared.The results show:the better the forests were protected,the higher the community diversity was.But,soil animal community diverdity in climax forest community may become lower.