摘要
群落是指一定地段或生境里各种生物种群构成的结构单元。群落内各物种不是孤立存在的,它们之间存在着极为复杂的营养联系。一种植物常有多种害虫取食,一种害虫可取食多种植物。
A new method measuring similarity among community food webs is developed based on adjacency matrices of community food webs. The similarity coefficient S = a/(a+b+c) is obtained by comparing two adjacency matrices, where a,b and c represent respectively the match numbers in 2×2 frequency table.
出处
《生态学杂志》
CAS
CSCD
北大核心
1992年第3期65-68,71,共5页
Chinese Journal of Ecology
关键词
群落
食物网
相似性
community, food web, similarity.