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台兰河流域土地利用变化及其景观格局特征研究
Authors
孙栋元
彭冬梅
+5 more
李子良
李菊艳
赵成义
闫映宇
魏恒
Publication date
1 January 2009
Publisher
Abstract
在遥感和GIS技术支持下,获取了自1990年以来台兰河流域3期土地利用数据,在GIS空间分析模块下对台兰河流域土地利用及其景观格局特征进行了研究。结果表明:1990-2005年,土地利用变化表现出耕地和沙地明显增加,分别增加35 027.11 hm2和10 443.46 hm2,而草地和天然林地面积锐减,其中草地净减少59 965.95hm2,反映出流域有大面积拓荒的趋势。随着耕地面积的不断增大,引发农业用水和生态用水之间的矛盾,天然植被受到破环,生物多样性减少。老绿洲土壤盐渍化面积总体呈减小趋势,新绿洲及绿洲外围局部地区土壤盐渍化呈恶化趋势
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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