摘要
评估绿洲地区生态系统服务价值有助于定量研究绿洲生态环境的发展变化。以Costanza等人对全球生态系统服务价值评估的部分成果为参考,以谢高地等人制定的中国陆地生态系统单位面积服务价值表为基础,对石羊河下游民勤绿洲1994年至2007年14 a间生态系统服务的价值进行了估算和对比分析。结果表明:1994年民勤绿洲的生态系统服务总价值为102.04亿元,到2007年则下降为79.04亿元,14 a间,生态系统服务价值总共下降了23亿元,其中草地面积的减少是生态系统服务价值下降的主要原因。因此保护绿洲生态环境,恢复和提高绿洲生态系统服务功能是干旱地区绿洲生态环境建设的重要任务。
Evaluating the ecosystem service＇ s value of an oasis could help study quantitatively the development and changes of the oasis＇ ecosystem. Based on the statistical data of Minqin Oasis in the lower reaches of Shiyang River from 1994 to 2007, this paper estimated the ecosystem service＇ s value of the Minqin County. The result showed that the annual value of the ecosystem service in the lower reaches of Shiyang River was 102.04 × 10^8 Yuan in 1994, and 79.04 × 10^8 Yuan in 2007. During the 14 years, the value of the ecosystem service had been reduced by 23 × 10^8 Yuan in the area. The main reason for the dropping of the service value of the oasis＇ ecosystem is grassland reduction, so the important task of oasis ecological environment construction in arid areas is to protect oasis ecological environment, restore and enhance oasis ecosystem service function.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第5期230-234,共5页
Agricultural Research in the Arid Areas
基金
国家自然科学基金(40771054)
