西北内陆盆地潜水与土壤水转化关系研究

Study on the Transformation Relationship between Phreatic Water and Soil Moisture in the Inland Basin,Northwestern China

在天山北麓昌吉地下水均衡试验场,选择天山北麓平原的三种代表性岩性(粘土、细砂、砂砾石)进行天然条件下的潜水入渗补给和潜水蒸发模拟试验研究。观测不同岩性的潜水入渗补给量和潜水蒸发量,计算潜水补耗差,分析岩性和潜水埋深对潜水补耗差的影响。研究成果对于认识西北内陆干旱平原区土壤水与潜水的转化关系、涵养和保护地下水资源具有重要意义。

In the groundwater experimentation station located in the north slope of Tianshan Mountains,three kinds of lithologic character(stony sand,fine sand and clay),which are typical in the inland basins,are chosen to experiment for the infiltration and evaporation of the phreatic water.The volume of infiltration and evaporation of the phreatic water is observed in different groundwater levels.The difference derived from recharge minus evaporation for the phreatic water is calculated.The influences of the lithologic character and the phreatic water level are analyzed for the transformation between soil moisture and phreatic water.The experimentation results are significant for the transformation relationship between soil moisture and phreatic water,the conservation and protection of groundwater resources.