关键词: 凋落物, 土壤节肢动物, 生物多样性, 亚热带森林, 哀牢山

Abstract: This paper systematically analyses the mechanisms of homeostasis and exogenous controlling of agroecosystem.The former includes integrity,diversity,substitution and niche homegeneity,and the latter refers to the equal-controlling mechanism.It is very importanto study these mechanisms for theoretical guidance of agroecological practices.

Key words: litter, soil arthropod, biodiversity, subtropical forest, Ailao Mountain