3个时期华阳河湖群湿地生态系统服务价值估算

Estimation of Ecosystem Services Value of Wetlands in Huayang lakes Area for Three Periods

采用1990年、2002年和2010年3期土地利用数据,运用Costanza方法,结合谢高地修正的中国生态服务价值当量因子表,分析华阳河湖群湿地的土地利用变化,研究由此而引起的该湿地生态系统服务价值变化。结果表明,与1990年相比,2010年华阳河湖群的湖泊、河流、水库坑塘、内陆滩涂和河滩的面积分别减少了63.829km2、9.262 km2、6.926 km2、5.109 km2和15.238 km2;湿地生态系统服务总价值下降,从1990年的2.922×109元下降到2010年的2.568×109元,这主要是生态价值系数较高的湖泊面积减少所致;2010年,湖泊、河流、水库坑塘、内陆滩涂和河滩的服务价值分别为1.839×109元、2.219×108元、1.110×108元、3.399×108元和0.566×108元。湖泊对生态系统服务价值贡献率仍然最大,河滩贡献率最小。研究区在未来应实施土地用途管制,注重对湖泊、河流等湿地的保护。

The land use change and ecosystem services value of the wetlands in Huayang lakes area were researched using land use data of the years 1990,2002 and 2000,based on Costanza method,combined with‘Chinese ecological service value equivalent factor tables＇ revised by Gaodi Xie.The results showed that compared with those in 1990,the areas of lakes,rivers,reservoir pits,beaches and inland river beds in 2010 reduced by 63.829 km^2,9.262 km^2,6.926 km^2,5.10^9 km^2 and 15.238 km^2;the ecosystem services value of the wetlands decreased from 2.922×10^9yuan to 2.568×10^9yuan,which was mainly caused by lake area reduction with high ecological value coefficient;in 2010,the services value of lakes,rivers,reservoirs pits,inland tidal flats and beaches were 1.839×10^9yuan,2.219×10^9yuan,1.110 ×10^9yuan,3.399×10^9yuan and 0.566×10^9yuan.Ecosystem services value of the lakes was the largest.Land use control should be implemented in the future,and the protection of wetlands should also be paid attention to,such as lakes and rivers.