毛乌素沙地植被与地下水关系  

Relationship Between Vegetation and Groundwater in Mu Us Desert

作　　者：程东会[1] 王文科[1] 侯光才[2] 杨红斌[1] 李瑛[2] 张二勇[3] 

机构地区：[1]长安大学环境科学与工程学院,西安710054 [2]中国地质调查局西安地质调查中心,西安710054 [3]中国地质调查局,北京100037

出　　处：《吉林大学学报（地球科学版）》2012年第1期184-189,共6页Journal of Jilin University：Earth Science Edition

基　　金：国家自然科学基金项目(41072184);教育部科学技术研究重大项目(308021);教育部长江学者创新团队项目(IRT0811);中国地质调查局地质调查项目(1212010331302)

摘　　要：以植被的种群和盖度、地下水埋深、包气带含水率、地下水矿化度和包气带含盐量等指标,研究毛乌素沙漠腹地地区植被与地下水的关系,确立了研究区优势植被沙蒿(Artemisia)、沙柳(Salix psammophila)和苔草(Carex)的适生地下水埋深、包气带含水率、地下水矿化度和包气带含盐量。研究表明:地下水埋深、包气带含水量对植被种群影响非常敏感,而地下水矿化度和包气带含盐量则为不敏感指标。另外,地下水埋深对以地下水为水分来源的植被盖度较为敏感,而总盖度为不敏感指标。The relationship between vegetation and groundwater in the hinterland of Mu Us Desert with 6 indicators,such as vegetation populations and cover,groundwater depth and mineralization,vadose zone moisture content and salinity,were investigated.We established the suitable depth of groundwater,unsaturated zone moisture content,groundwater salinity and the vadose zone salinity for dominated vegetation,Artemisia,Salix psammophila and Carex.The results showed that vegetation populations is very sensitive to groundwater depth and vadose zone moisture content,while vadose zone salinity and groundwater mineralization are non-sensitive indicators.In addition,the vegetation,the moisture of which for growth obtained from groundwater,its cover is more sensitive to groundwater depth,while the total coverage is non-sensitive indicators.

关 键 词：植被种群 植被盖度 地下水 包气带含水率 包气带含盐量 毛乌素沙漠 

分 类 号：P641.74[天文地球—地质矿产勘探]