中国陆地植被生态系统生产有机物质价值遥感估算

Valuation of the organic matter produced by terrestrial vegetation ecosystems in China in 1995 based on remote sensing

可持续发展的战略要求推进生态资产研究,对生态系统生产有机物质功能价值的估算则是生态资产评估的重要组成部分。利用改进的CASA模型对中国陆地生态系统1995年NPP进行了估算,它与实测数据和国内其他研究成果的比较验证证明了该方法的可靠性;进而对1995年全国陆地生态系统生产有机物质的价值进行了估算,结果表明,1995年中国陆地生态系统净第一性生产力生产有机物质的总价值为1.902049×1012元.a-1,其空间分布是从东部向西北递减、由中部向东北和南部递增;从类型上看,常绿阔叶林的单位面积值最高,裸地和极稀疏植被的单位面积值最低。

The “Strategy of sustainable development” induces the requirements of the research about eco-assets, in which the value of the organic matter produced by ecosystem plays a very important role, This paper uses an improved CASA model to estimate the NPP produced by China＇s terrestrial ecosystem in 1995, and comparing with the field survey data and outputs of other researches we can conclude that the approach we use is reliable, We then continue to value the organic matter produced by China＇s terrestrial ecosystem in 1995 and get a result of 1.902×10^12RMB·a^-1 as a whole, In the map of China, the values decline from the East to the Northwest and increase from the Center to the Northeast and the South, The average value of the deciduous broadleaved forest is the highest of all, while that of the bare land and sparse vegetation is the lowest.