Landscape ecological mechanism on system coupling of the meta-ecosystem consisted of mountain,desert and oasis in Hexi corridor,Gansu,China

Abstract

Abstract: The fundament of system coupling is heterogeneity,and the basic prerequisite is that there are connective corridors in the same type between ecosystems.The landscape ecological mechanism of system coupling is the spatial difference of non biotic environment and the heterogeneity caused by disturbances.The force or energy of system coupling is disturbances.From in the view of landscape ecology,system coupling is the merging process of different landscape elements between different landscape ecosystems followed by the process of character changing of landscape elements with scale changing.Based on the essence of disturbances,system coupling can be divided into two types as natural system coupling and artificial system coupling.Natural system coupling is the base of artificial system coupling,and hence,the enhance of eco productivity of coupling system is based on the optimization of artificial system coupling.

Key words: Hexi corridor, Oasis landscape ecosystem, System coupling, Landscape ecological mechanism

CLC Number:

S68
Q149

LIU Xuelu, REN Jizhou . Landscape ecological mechanism on system coupling of the meta-ecosystem consisted of mountain,desert and oasis in Hexi corridor,Gansu,China[J]. Chinese Journal of Applied Ecology, 2002, (8): 979-984.

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