摘要
采用Constanza生态系统服务价值计算公式,结合谢高地等人制定的中国陆地生态系统单位面积生态服务价值表,对正在建设高原生态城的民乐县1996—2020年25a间的土地利用变更数据进行分析,估算了民乐县的生态系统服务价值,并对其变化进行对比分析。结果表明:①1996—2009年,民乐县的生态系统服务价值从9.507 9亿元增加到10.019 3亿元,预测到2015年和2020年将分别达到10.559 4亿元和10.712 9亿元,区域生态系统服务价值呈增加趋势。②在不同生态系统类型中,森林、草地和农田生态系统提供的生态系统服务价值所占比例较大,而林地面积的增加是引起其生态系统服务总价值持续上升的主要原因。
According to method of calculating the value of ecosystem services by Costanza and the Chinese terrestrial ecosystem services value per unit area tables by Gao-di Xie,the changes of Minle County which is being built as Plateau Eco-city were analyzed from 1996 to 2020,the values of ecosystem services were estimated and the variation was analyzed.The results indicated that the value of ecosystem services increased from 9.507 9×108 Yuan to 1.001 93×109 Yuan from 1996 to 2009.It is forecasted that ESV will reach up to 1.055 94×109 Yuan in 2015 and 1.071 29×109 Yuan in 2020,ecosystem service total value in the entire research period assumed the increase tendence.In different ecosystems,the ecosystem service values of forest,grassland and farming accounted for the major proportion in the ecosystem service value constitution,and increase the area of woodland is the main reason for causing the rise of the value of ecosystem service.
出处
《水土保持研究》
CSCD
北大核心
2012年第2期154-159,共6页
Research of Soil and Water Conservation
