津市市土地利用变化对生态系统服务价值的影响

土地利用/覆盖变化与生态系统服务价值是相互影响、相互制约的,对二者进行定量研究,可为生态社会经济的可持续健康发展提供参考依据.根据津市市1996-2005年土地利用变更调查数据,采用Costanza等的生态系统服务价值计算方法以及谢高地等提出的符合中国实际的陆地生态系统单位面积生态服务价值表计算津市市生态系统服务价值并对其进行分析,结果表明生态系统服务价值总量增加了18.41×106元,年均变化率为0.19%,在生态系统单项服务功能中,除了食物生产功能外,其他单项服务价值都在增加.同时,生态系统服务价值空间差异明显,总体而言东南部地区服务价值较高,中西部稍低,而北部地区尤其是涔澹农场服务价值的增长幅度大.

Influences of Land-use Changes on Ecosystem Service Value in Jinshi City

The land - use changes and the ecosystem service value can influence and restrict each other, so the quantitative study on influences of land - use changes on ecosystem service value would provide references for the harmonious development of economic socie- ty and ecosystem. Based on the data of land - use changes survey from 1996 to 2005 in Jinshi City, using the calculation method put forward by Costanza and the table about the average unit price of ESV in China provided by XIE Gaodi et al, this paper calculates and analyzes the changes of ESV in Jinshi city. The results show that the ESV had increased 18.4 million yuan, with an average annual rate of 0.19 percent. The ESV of single service functions is increasing except the food production, and the main influencing factor of the food function is the decrease of the cultivated area. At the same time, there are significant differences of the ecosystem service val- ue. In brief, the ESV of the southeastern part is more than that of midwest, but the northern part has the largest growth rate, especially the Cendan farm.