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基于RS/GIS的艾比湖沿岸绿洲生态系统服务功能价值及其演变
Authors
陈强,陈正江,张兴国,刘晓
Publication date
1 January 2005
Publisher
Abstract
生态系统服务功能是生态学、生态经济学研究的热点问题,它与水土保持、生态环境质量、土地利用等有着密切的联系。借助于1 10万地形图、TM遥感资料和GIS方法,根据研究区的区域特点,将Costanza等人的研究与国内相关研究结合建立价值模型对艾比湖沿岸的博乐、精河绿洲进行不同历史时期生态系统服务功能价值测评。获知研究区总价值:1979年为8.52×108$;1991年为7.71×108$;1999年为8.13×108$。进而分析了近20a来艾比湖沿岸绿洲的生态系统价值及其演变,探明了其价值的演变趋势,并对其变化的原因做了讨论。研究表明,研究区近20a的生态系统服务功能价值基本上以1991年为界,呈衰减—略上升的下凹曲线变化趋势
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Last time updated on 29/11/2016