摘要
土地是一切陆地生态系统的载体,人类的一切活动同样离不开土地,在人类改造和利用自然的过程中不可避免地要影响各类生态系统的状况进而影响到它们为人类所提供的服务与功能。而第一性生产服务功能是生态系统服务功能主要特征之一。本文在地理信息系统的支持下,利用陕北黄土高原3期土地利用数据,估算了土地利用变化引起的生态系统服务价值的变化,结果表明,1996年区域NPP生态系统服务功能价值比1986年增加了1·17×108元;2001年生态服务功能价值比1986年增加了3·37×108元。因此,实施退耕还林、还草、遏制景观破碎化过程,合理控制城镇建设用地的扩展,是提高区域生态系统服务功能的有效途径。
The soil is the carriers of land ecosystem, which supports all kinds of human activities. It is inevitable that human being activities will influence the ecosystem when they exploiting what they need, which in turn affect the state of the ecosystem and its function to serve humankind. It is one of the main functions of an ecosystem to produce primary products. Based on GIS and employing the data of the third land use in Loess Plateau of northern Shaanxi, the paper estimated the service function change of the system resulting from the change of land use. The results showed that the ecosystem service function value of regional NPP in 1996 increased by 1.17 × 10^8 yuan than that in 1986, which that in 2001 increase by 3.37 × 10^8 yuan than that in 1986. It suggested that measures of reforesting and restoring grass, preventing the landscape broken and the expansion of urbanization were effective to enhance the service function of local ecosystem.
出处
《生态学杂志》
CAS
CSCD
北大核心
2005年第9期1029-1032,共4页
Chinese Journal of Ecology
基金
国家自然科学基金项目(40371003)
教育部重点资助项目(01158)
作者简介
李晶，女，1977年生，博士研究生。研究方向为城乡国土资源评价与地理信息系统。E-mail：lijing@stu．snnu．edu．cn 通讯作者
