荒漠生态系统服务功能及其价值研究

荒漠生态系统是整个生物明中分布较广的一个系统,是陆地生态系统中的一个重要的子系统,对这一广大区域的生态系统服务功能的正确认识,是经济发展和生态环境建设的重要依据.本文从生态系统服务功能的角度归纳了荒漠生态系统类型以及荒漠生态系统服务功能,主要有旅游服务、涵养水分和水源、保持水土、净化水体和空气、营养元素循环、物质生产、污染物降解、有机质、截留降水、涵养水分、土壤C的积累、农田生态系统服务、单位面积及区域生态系统服务价值等,以及评价荒漠生态系统服务功能价值的模型和方法,为正确评价荒漠生态系统服务功能提供依据.

Study of the Function and Value of Ecosystem of Hungriness

The area of hungriness ecosystem is bigger in the whole biosphere,which is the important in the terrestrial ecosystem.The cor- rect cognition of the hungriness ecosystem is the gist for economy development and entironment construct.This paper introduces the style and the major functions of hungriness ecosystem services,and the models and measures of hungriness ecosystem services,which is the foundation on estimating correctly the hungriness ecosystem services.Meanwhile,this paper concluded the hungriness ecosystem models of touring ser- vice,holding water and soil,purifying air,decontaminating environment,cycling the nutrition element,producing matter,decomposing pollu- tion,adjusting moisture,cleaning water,and accumulating the soil carbon,and the models to account the value of unit area and region ecosys- tem services,which is the foundation for estimating the hungriyness ecosystem.