柴河小流域表层土壤盐分的分布特征  

Distribution Characteristics of Surface-soil Salt in Chaihe Basin

作　　者：吴献花[1] 赵斌[1] 陈苗苗[1] 吴斌[1] 高婷[1] 

机构地区：[1]玉溪师范学院玉溪高原湖泊生态环境研究中心,云南玉溪653100

出　　处：《水土保持通报》2013年第4期271-274,共4页Bulletin of Soil and Water Conservation

基　　金：国家水体污染控制与治理科技重大专项"滇池流域面源污染调查与系统控制研究及工程示范"(2009ZX07102-004)

摘　　要：采用GPS定位系统,于2011年10月在柴河小流域采集表层土样50个,结合传统统计学方法和ArcGIS地统计学法分析了柴河小流域表层土壤盐分及钙镁离子含量的空间变异特征。结果表明,研究区表层土壤盐分及水溶性钙镁离子呈对数正态分布;柴河流域表层土壤盐分与水溶性钙镁离子、全氮、全磷及有机质呈显著正相关关系;结合柴河小流域高程南高北低的趋势,土壤盐分和土壤钙离子在低洼处均较高,表现出较强的迁移性。Fifty soil samples were collected in Chaihe basin in October 2011, and the sampling locations were recorded by GPS. Traditional statistics and geostatistics based on ArcGIS were used to analyze the spatial distribution of soil salt and water-soluble Ca2＋ and Mg2＋. Results from traditional statistical analysis showed that surface soil salt, water-soluble Ca2＋ and Mg2＋ were exhibited as logarithmic normal distribution within the study area. The content of water-soluble Ca2＋ and Mg2＋ , total soil organic matter, total nitrogen and to- tal phosphorus has significant positive correlation with soil salt. The soil salinity and soil calcium ions showed strong mobility as there were more in the low-lying place.

关 键 词：柴河小流域 土壤盐分 空间变异 

分 类 号：S153[农业科学—土壤学]