摘要
干旱区山地—绿洲—荒漠系统 (MODS)的耦合关系 ,通过系统之间以及要素之间界面的过程表现出来。系统界面上物质、能量与信息的分布特点、变化特征、作用方式与相互关系 ,直接制约着MODS的结构与功能。干旱区一定土地利用与覆盖变化条件下 ,SPAC中水分的变化与水热耦合关系 ,成为MODS时空特征与过程模拟研究的重要方向。山地 -绿洲系统界面的特征 ,绿洲 -荒漠过渡带的生态过程以及MODS综合体的界面过程 ,都离不开水分、土壤、空气等介质 ,而水是干旱区自然环境综合体中最活跃的因素 ,是自然界物质循环和能量转化以及信息传递的主要媒介。研究系统耦合及其界面过程对于生态系统的综合调控具有重要理论价值。
The interface process of the systems and factors represents the coupling relationship of MODS in arid zone. The distributing characteristics, change feature, action mode and relationship restrict directly the structure and function of MODS. The moisture variation and coupling relationship of water and heat in SPAC become important research aspect of spatial-temporal characteristics and process simulation of MODS under some condition of LUCC in arid zone. The interface characteristics of mountain-oasis system, the ecological process of oasis-desert ecotone and the interface process of MODS syntheses cannot depart from the medium such as water, soil and atmosphere, etc. in which water is the most active factor in natural environment syntheses in arid zone, and is also the main medium of substance circulation, energy conversion and information transmission in nature. It has important principle value for synthetical control of ecosystem to research system coupling and its interface process.
出处
《干旱区地理》
CSCD
北大核心
2004年第3期388-392,共5页
Arid Land Geography
基金
中科院知识创新工程领域前沿项目 (KZCX -XJ0 2 -0 2 )
中科院知识创新工程重要方向项目 (KZCX3 -SW -3 2 7)
国家重点基础研究发展规划项目 (G19990 43 5 0 9)成果
