基于土地利用变化的三亚市生态系统服务价值评估

Assessment of Ecosystem Service Value of Sanya City Based on Land Use Change

根据海南省三亚市1976、1996、2013年的遥感影像数据，应用GIS空间分析方法，研究了三亚市的土地利用变化。同时应用谢高地等的生态系统服务价值系数，分析了1976-2013年三亚市土地利用变化所引起的生态系统服务价值变化。结果表明：1976-2013年三亚市耕地、水体、未利用地面积大幅度减少，林地面积基本维持不变，园地和建设用地面积增加；三亚市生态系统服务价值由1976年的356038．57万元增加到2013年的388124．86万元；生态系统服务价值对价值系数缺乏弹性。

According to the TM images of Sanya city in the years 1976, 1990, and 2013, by using GIS spatial analysis meth- od, we studied the land use changes of Sanya city. In addition, by adopting the value coefficients of ecosystem service reported by Xie G D, et al. （ 2003 ） , the author analyzed the changes in the ecosystem service value caused by the land use changes of Sanya city during 1976-2013. The results showed that： from 1976 to 2013, the areas of farmland, water body, and unused land of Sanya city decreased sharply, the area of forest land maintained steady, and the areas of garden land and construction land increased. The eco- system service value of Sanya city increased from 3560.3857 million yuan in 1976 to 3881.2486 million yuan in 2013. The ecosystem service value of this city was inelastic to the value coefficients.