基于土地利用变化的大庆市生态系统服务价值研究

本文以大庆市为研究区,依据2001年和2009年的土地利用数据,从生态系统服务功能角度,运用Costanza的方法,结合谢高地修正的我国生态服务价值当量因子表,定量研究了土地利用变化引起的生态系统服务价值变化量。结果表明:2001～2009年间,研究区林地和城乡居民点及工矿用地面积增加,其余土地利用类型面积均有减少,其中林地的面积变化量最大。土地利用变化引起了研究区生态环境的变化,对生态系统服务价值也产生了一定的影响,大庆市9年间生态系统服务价值增加了41170.55万元,各单项服务功能价值中,其生态系统所提供的水源涵养、废物处理和食物生产等3项生态服务功能下降,其余6项生态系统服务功能均有不同程度的升高;从不同土地利用类型的生态服务功能看,湿地和水域的生态服务功能较强,只有林地的生态系统服务价值是增加的。

Ecosystem Service Value Based on Land Use Change in Daqing

Based on land use data in 2001 and 2009,and the Costanza’s method and the coefficients proposed by Gao-di Xie,this paper quantitatively examined the variation of ecosystem services value on land use change in Qaqing.The results showed that the areas of the forest land,urban and rural settlements and industrial land increased from2001 to 2009,and all of others decreased during the period.Change of the forest land were more remarkable.Land use change led to the change of ecological environment in the research area and influenced the ecosystem service value to some degree.The gross ecosystem service value in Daqing increased 41170.55 million yuan during the 9 years.Besides,the value changes of 9 types of ecosystem services were analyzed.The ecosystem service functions of water resource conservation,waste disposal and food supply by the ecosystem decreased,whereas the rest all increased.The analysis of ecosystem services value on different types of land use showed,ecosystem service functions of wetlands and waters were stronger than others,only the ecosystem service value of forest land increased.