干旱区生态资产定量评估的技术体系

生态资产是生态系统生物资源直接价值及其生态服务功能价值的总和，干旱区支撑资源开发的生态环境相对比较脆弱，对生态资产价值进行评估是将其纳入社会与市场经济体系、引起社会对生态环境建设高度重视的必要条件。本文在评述了国内外有关生态资产评估研究进展的基础上，应用遥感技术、全球定位系统、地理信息系统(3S技术)对生态资产价值评估的技术方法进行了分析，然后根据干旱区生态资产测量的特征，建立了基于遥感的生态资产价值评估模型，同时提出了基于定量遥感的生态资产测量技术体系的主要内容和实现过程，为全面开

Technical System of Remote Sensing Measurement on Ecological Assets in Arid Areas

Ecological assets are the summation of the direct values of biological resources and the values of ecological service functions in ecosystems. To assess the values of the ecological assets is the prerequisite to bring the ecological assets into society and market economy system so as to attract a high attention to the regeneration of ecological environment. Based on the new domestic and foreign progresses on the assessments of ecological assets, this paper summarizes the theories about the assessments on ecological assets by using RS, GPS and GIS, and the RS based model of assessing the ecological assets in arid areas is developed based on the consideration about the characteristics of measuring the ecological assets in arid areas. The contents and processes of quantitative RS based measurement of ecological assets are put forward so as to extensively carry out the measurement of ecological assets.