毛乌素沙地与植被有关的地下水环境研究

[目的]研究毛乌素沙地与植被有关的地下水环境。[方法]选择毛乌素沙漠腹地,研究沙漠地区植被与地下水的关系,建立了沙漠地区的研究植被与地下水关系的指标体系,即植被的种群、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,以及相应的野外工作方法。[结果]结果表明,研究区分布有9个主要的植被种群,沙蒿（Artemisia）、沙柳（Salixpsammophila）和苔草（Carex）是优势植被;地下水矿化度在沙丘地区为100～300mg/L,滩地为800mg/L左右;包气带含水率全年维持在8%～16%;沙丘含盐量小于0.2%,滩地含盐量大于0.3%。[结论]这些成果为研究该区植被与地下水的关系提供了依据。

Survey on Groundwater Environment Related to Vegetation in Mu Us Desert

[Objective] The research aimed to study the groundwater environment related vegetation in Mu Us Desert.[Method] Choosing the hinterland of Mu Us Desert,the relationship between vegetation and groundwater in desert areas was studied.The indicator system for the relationship between vegetation and groundwater in the sandy area was established,including vegetation population,vegetation cover,groundwater depth,vadose zone moisture content,groundwater mineralization and vadose zone salinity,as well as the corresponding field work methods.[Result] The results showed that the nine primary vegetation populations were distributed in the study area,and Artemisia,Salix and Carex were the dominant vegetation species.The groundwater mineralization in the sand dunes was 100-300 mg/L,and 800 mg/L in the beach.Vadose zone moisture content remained at 8%-16%.The dunes salinity was less than 0.2%,and beaches were higher than 0.3%.[Conclusion] These results provided a basis for study the relationship between vegetation and groundwater in Mu Us Desert.