若尔盖县生态系统脆弱性遥感监测评价

Ruoergai County Ecosystem Vulnerability Remote Sensing Monitoring and Evaluation

生态系统脆弱性是表征人地关系系统响应环境变化的重要属性,基于遥感与地理信息技术,利用多因素主导分析法对若尔盖县2010年、2014年的生态系统脆弱性进行了监测分析。研究结果表明,若尔盖县生态系统脆弱性主要受沙漠化与土壤侵蚀影响;2010-2014年,其生态系统脆弱性减小,脆弱区域占比较小,且主要分布于若尔盖县北部与东南部区域;生态系统脆弱性随海拔升高先降后升,随坡度增大而增加,未利用地的生态系统最为脆弱。

This paper takes advantage of remote sensing and geographical information technology to monitor ecosystemfragility of Ruoergai county in 2010 and 2014,making use of multi-factor leading analysis method.Results show that Ruoergai county ecosystem fragility is mainly affected by desertification and soil erosion;ecosystem fragility of Ruoergai county in 2010 to 2014 is falling,the fragile area occupies small proportion,and mainly distributed in the region of the north and southeast area of Ruoergai county.The fragility of ecosystems is falling first,and then rising with elevation increasing and with the slope increasing,the ecosystems of unused land is the most vulnerable.