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历史时期西北干旱区生态环境演变规律和驱动力
Authors
徐曼
樊自立
王让会
马英杰
Publication date
1 January 2005
Publisher
Abstract
生态环境演变的基本规律是:山前地带引水增加,人工绿洲扩大,生态环境改善,但盐渍化发展;河流中下游水量减少,古代绿洲衰亡,荒漠化扩大,生态环境恶化。景观格局的变化规律是:“两扩大,四缩小”,即在沙漠与绿洲同时扩大的情况下,而处于两者之间的自然水域、林地、草地和野生动物种群减少。引起生态环境变化的驱动力,主要是社会经济发展改变了水资源的地域分配,同时与气候波动、河流改道、风沙活跃等自然因素有关
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Institutional Repository of Xinjiang Institute of Ecology and Geography, CAS
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Last time updated on 29/11/2016