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地理科学  2011 

环渤海低平原微咸水区土壤盐渍化与盐分剖面特征

, PP. 929-934

Keywords: 环渤海低平原,土壤盐渍化,盐分剖面类型,主成分分析,聚类分析

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Abstract:

采用统计分析、主成分分析和聚类分析方法,结合GIS技术研究环渤海低平原微咸水区土壤盐渍化特征,并探讨盐分剖面类型和分布状况。结果表明0~5cm表层土壤盐分属于强变异强度,5~60cm各土层盐分属于中等变异强度。土壤盐分变量的全部信息可由盐渍化、碱化、区域地下水埋深和矿化度、K+等5个主成分反映,其累计贡献率达87.88%。土壤盐分剖面分为表聚型、底聚型和中聚型,在环渤海低平原区的面积比例基本一致,约各占1/3。

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