中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
冻融季节苏打盐渍土的水盐变化规律

文献类型:期刊论文

作者邓伟
刊名水科学进
出版日期2008
卷号19期号:4页码:559-566
关键词冻融作用 苏打盐渍土 水盐迁移 变化规律 微域格局
其他题名Variation of water and salinity in sodic saline soil during frozen-thawing season
通讯作者罗金明
合作状况国内
中文摘要通过野外定位观测和室内分析,探讨了冻融季节的微域尺度(32 m长的横剖面)苏打盐渍土的水分和盐分的变化规律。结果表明:冻结期大量地下水迁移并储存在盐化草甸土的冻层中,同时地下水位埋深迅速从1.2 m下降到2.5 m以下;苏打盐化草甸土冻结层的含水率明显增加,其中30~40 cm土层的含水率变化最明显(从冻结前的20%增加到50%)。苏打碱土冻层的含水率增量不明显,但盐分显著增加,其中白盖苏打碱土表层的盐分增量幅度达80%。盐分变化主要表现为苏打盐渍土表层HCO3-、CO32-、SO42-以及Na+的增加,大量盐分表聚使消融期土壤的盐渍化程度不断加重。 
英文摘要By the in-situ observation and analysis in the laboratory , the variation of water and salinity in micro scale ( a 32- m-long transect) of sodic saline soil region are discussed during the frozen-thawing season. Results show that vast groundwater is transported and stored in the frozen layer of saline meadow soil in frozen period, which results in the significant enriched soil moisture, the moisture at 30- 40 cm layer increases most obviously (increase from 20% before frozen to 50%), and the groundwater level descends abruptly from 1.2 m to 2.5 m below . The enrichment of soil moisture in sodic saline soil isn't significant ; nevertheless, salinity is enriched significantly, the enrichment degree in white crust sodic alkaline soil reaches 80 %. The variation of salinity is mainly composed of the increased content of bicarbonate, carbonate, sulfate and sodium. The vast salinity accumulation in surface layer results in the graduall aggravated saline degree during thawing season.
分类号S156
收录类别EI
资助信息中国科学院知识创新重大项目(KZCX1-SW-19-02)
语种英语
公开日期2014-01-25
源URL[http://ir.imde.ac.cn/handle/131551/6801]  
专题成都山地灾害与环境研究所_成都山地所知识仓储(2009年以前)
成都山地灾害与环境研究所_山区发展研究中心
推荐引用方式
GB/T 7714
邓伟. 冻融季节苏打盐渍土的水盐变化规律[J]. 水科学进,2008,19(4):559-566.
APA 邓伟.(2008).冻融季节苏打盐渍土的水盐变化规律.水科学进,19(4),559-566.
MLA 邓伟."冻融季节苏打盐渍土的水盐变化规律".水科学进 19.4(2008):559-566.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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