海南岛自然生态系统服务价值评估

以卫星遥感影像为基础,运用"3S"技术,解译并统计了海南岛陆地自然生态系统的类型和面积,利用生态经济相关理论基础,评估计算出年海南岛陆地自然生态系统服务价值。结果表明,2008年海南岛自然生态系统服务价值约2198×108元,是当年全省GDP的1.5倍;森林生态系统的服务价值占四类生态系统(森林、草地、湿地和淡水)服务价值的81.77%,单位面积价值量达3260×104元/km2;自然生态系统在维持营养物质循环、水调节、大气调节等方面的间接使用价值约2076×108元,是直接使用价值的17.0倍。研究首次建立了针对海南岛陆地生态系统服务价值全面的评估体系,并在评估方法上择优、改进,对海南岛自然生态系统服务价值监测体系的构建及深入研究具有重要意义。

Evaluation of Natural Ecosystem Services in Hainan Island

Based on satellite remote sensing images,the type and size for natural ecosystem of Hainan Island was calculated out by using RS,GIS and GPS technologies.The ecosystem services of forest,grassland,wetland and freshwater ecosystems were classified into 9 types,and the value of each type was assessed by using related theories of ecological economy.The results showed that the total value of the natural ecosystem services in Hainan Island in 2008 was about 2 198×108 yuan,which was as 1.5 times as the GDP of Hainan Province.Among four natural ecosystems,the value of virgin forest ecosystem services accounted for 81.77% of the total value,and the ecosystem service value per unit area was 3 260×104 yuan/km2.The indirect use value of natural ecosystem services was estimated as 2 076×108 yuan,which was 16.0 times higher than their direct use value.This paper built a comprehensive evaluation index system of natural ecosystem services about Hainan Island for the first time,and made some improvement on the evaluation techniques,which had significances to the building of the monitoring system of the ecosystem services valuation for Hainan Province and further researching.