黑河下游土壤盐分分布特征

来源 :中国沙漠 | 被引量 : 9次 | 上传用户:dr404070578
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采用黑河下游面域土壤信息调研数据,结合层次聚类和地统计分析等方法,探讨黑河下游土壤盐分在水平方向和垂直方向上的变异特征,揭示黑河下游土壤盐渍化的程度和状态。结果表明:研究区土壤盐分表聚特征明显。土壤盐分及离子组分含量存在很强的变异性,变异系数0.42~1.99。黑河下游土壤盐渍化类型主要为氯化物-硫酸盐型,土壤盐渍化程度较为严重,盐土占比高达42.87%。从土壤盐分在水平方向上的变异特征来看,表土层土壤全盐在一定的区域范围内具有空间结构特征,符合球状模型分布,空间分布表现为斑块状格局。从土壤盐分在垂
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