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新疆渭干河流域土壤盐渍化及其驱动力分析/Analysis on Characteristics and Driver Forces of Soil Salinization in Weigan River Basin,Xinjiang[J]
Authors
LU Lei
QIAO Mu
+8 more
YAN Jun-jie
ZHOU Sheng-bin
中国科学院新疆生态与地理研究所,新疆,乌鲁木齐,830011
中国科学院研究生院,北京,100049
乔木
卢磊
周生斌
闫俊杰
Publication date
1 January 2011
Publisher
Abstract
运用RS与GIS技术,结合统计学方法研究了渭干河流域土壤盐渍化分布状况、表层土壤(0 cm-30 cm)盐渍化特征及其驱动力.结果表明:①流域盐渍化耕地总面积11.48×10<'4>km<'2>,占总耕地面积的39.83%.土壤盐渍化现象普遍,主要分布在绿洲的下部边缘地带,河流中下游、地势平缓低洼等区域.盐渍化土壤呈条形状分布,在绿洲边缘带呈片状分布,边缘的重度盐渍化土壤交错分布在轻度和中度盐渍化土壤中.②流域土壤pH值平均值为8.42,属于碱性土壤.土壤含盐量较高,平均值达到19.28g/kg,土壤盐渍化类型主要以硫酸盐和氯化盐为主.③渭干河流域土壤盐渍化是自然因素和人为因素相结合的产物,自然因素是形成条件,人为因素则促进了盐渍化的发展
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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