The reestablishment of the arthropod community in short-term crop fields:I.Concept and characteristics of the community reestablishment
论短期农作物生境中节肢动物群落的重建I.群落重建的概念及特性

A crop ecosystem,an unstable ecosystem,is composed of crop fields and non crop habitats.Non crop habitats show positive or negative impacts on the pests and natural enemies in crop fields.In the fields of a short term crop,due to its periodic transplantation and harvest,arthropod community appears periodically 3 different stages which are community reformation,development and collapse.This kind of community development is different from the succession of a natural community.Therefore,the community reform...