摘要
根据香农 -维纳信息多样性指数的定义 ,提出了能流量多样性指数的计算公式 ,并以此分析了棉田生态系统中节肢动物群落特征。结果表明 :害虫与天敌群落的能流量多样性指数比数量多样性指数变化更为敏感 ,更能反映害虫与天敌的群落特征。作者认为 ,这是一个比较好的多样性测定指标。
Diversity is an important descriptor of a community diversity and ecologists have proposed numerous indexes.The previous indexes that assumed all species are equal and come from the same tropic level were criticized.A new index was developed for measuring community diversity.The diversity index of energy is sensitive to the population dynamics in arthropod pests and their natural enemy community.We think it is the better index for measuring community diversity because the functional aspect of species diversity measurement was strengthened by incorporating other difference between species as a component.
出处
《生态学报》
CAS
CSCD
北大核心
2000年第6期971-976,共6页
Acta Ecologica Sinica
基金
国家自然科学基金资助项目! ( 39970 1 37)
国家重点资助基础研究项目!( G2 0 0 0 0 1 62 0 9)
中国科学院创新方向资助项目!( KSC
