甘肃省主体功能区划中生态系统重要性评价  

Evaluate the Importance of Ecosystem in Major Function Zoning of Gansu Province

作　　者：牛叔文[1] 李永华[1] 马利邦[1] 孙红杰[1] 

机构地区：[1]兰州大学资源环境学院,甘肃兰州730000

出　　处：《中国人口·资源与环境》2009年第3期119-124,共6页China Population,Resources and Environment

基　　金：甘肃省主体功能分区研究(编号:GV2007-08)项目资助

摘　　要：生态系统的重要性是划分主体功能区的重要评价指标之一。甘肃省地域跨度大,自然地理背景复杂,生态系统的类型多样,生态重要性的定量评价困难。该文基于分区评价单元内各类生态系统的构成及功能来核算其生态服务价值,并把这种服务价值作为生态重要性的依据来划分生态保护区域。以县级行政区为评价单元,核算了森林、草地、荒漠、农田、湿地和城市6大类生态系统在气体和气候调节、水源涵养、土壤保持、环境净化、生物多样性维护、生物产品产出、文化娱乐7个方面的生态服务价值。评价结果表明,全省84个评价单元的生态服务价值的空间格局明显,较好地表现了各地区的生态系统的重要性及其分区指向,其结果可为省级主体功能分区提供基本依据。作为一种思路和方法,在完善主体功能分区中是值得探讨的。The importance of ecosystem is one of the assessment indexes for the major function oriented zoning. Gansu province is long and narrow in the map, with a large geographic scope. There are diverse ecosystem categories under the complex background of physical geography. It is difficult to quantitatively evaluate the importance of ecosystem. We accounted the value of ecosystem services based on structure and function of various ecosystems in each assessment units, and took the value as the important basis of ecosystem for ecological protection area divided. We took administrative districts at the county level as valuation units, estimated the current economic values of 7 ecosystem services （gas diversification, organism production output, and climate control conservation of water supply, soil formation and conservation, and environment purification,maintenance of organism culture and enter）for 6 biomes （forest, grassland, desert, farmland, wetland, and city）. The evaluation results showed a clear pattern of the value of ecosystem services of 84 assessment units distributed on space, and obviously revealed the importance of ecosystem in every unit and offered a good basis for major function oriented zoning at the provincial level. We considered it is feasible to evaluate the importance of ecological system by this way.

关 键 词：主体功能区 生态系统的重要性 生态服务价值 评价 甘肃省 

分 类 号：F062.2[经济管理—政治经济学]