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干表层的概念界定及其水文生态效应研究

发布时间:2018-05-25 01:20

  本文选题:土-气界面 + 干表层 ; 参考:《水文地质工程地质》2017年02期


【摘要】:干表层(DSL,Dry Surface Layer)是干旱半干旱地区土-气界面的重要组成部分,影响着陆地水分循环。文章以土壤物理学、土壤水动力学、土壤热力学和水文地质学的基本理论为指导,在综合分析前人资料的基础上,结合室内物理试验的部分观测成果,界定了干表层的概念,探讨了此概念的内涵与外延;辨析了干表层和(下伏)土壤干层两个概念的关系;阐明了干表层与地下水位埋深的关系,干表层对降雨入渗、蒸发和植被的影响。
[Abstract]:Dry surface layer dry Surface layer is an important part of soil-gas interface in arid and semi-arid areas, which affects the terrestrial water cycle. Under the guidance of the basic theories of soil physics, soil hydrodynamics, soil thermodynamics and hydrogeology, based on the comprehensive analysis of previous data and some observations of indoor physical experiments, the paper defines the concept of dry surface layer. The connotation and extension of this concept are discussed, the relationship between dry surface layer and (underlying) soil dry layer is analyzed, and the relationship between dry surface layer and buried depth of groundwater level, the influence of dry surface layer on rainfall infiltration, evaporation and vegetation is expounded.
【作者单位】: 长安大学环境科学与工程学院;旱区地下水文与生态效应教育部重点实验室;陕西省地下水与生态环境工程研究中心;核工业二0三研究所;陕西省地质环境监测总站;
【基金】:国家自然科学基金项目资助(41272247,41230314,41272246) 教育部留学回国人员科研启动基金项目资助(2013C0290418) 中央高校基本科研业务费资助项目资助(2013G1502031,2014G2290018)
【分类号】:S152;P641


本文编号:1931430

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