关中盆地地下水资源评价与解析

陕西关中盆地是西部经济最活跃的地区,而水资源不足成为经济进一步发展的制约因素.以地质和水文地质条件为依据,从影响地下水形成的诸因素出发,对关中地下水资源进行评价和解析.结果表明:受自然因素和人类活动的影响,区内天然资源量和可采资源量发生了变化,其中天然资源量和可采资源量分别减少了5.39×108 m3/a和4.53×108 m3/a.渭河以北地区地下水资源形成中,降水补给和灌溉补给占主导地位,二者占83.9%;渭河以南地区,降水补给和河水渗漏补给是地下水资源形成的主要因素,二者占94.2%.在此基础上,提出了水资源合理开发利用的对策和措施,以期实现水资源的永续利用和生态环境良性循环.

Evaluation and analysis of groundwater resources in Guanzhong basin

Guanzhong basin is the most economically prosperous region in West China,but the further growth of its economy is constrained because of the shortage of water resources.Based on geological and hydrogeological conditions,the paper evaluates and analyses groundwater resources from the point of factors that affect the formation of groundwater.The results show that natural resources of groundwater(5.39×10⁸m³/a) and available withdrawal of groundwater(4.53×10⁸m³/a) have decreased greatly under natural factors and human activities.North to the Weihe River,the main factors affect the formation of groundwater are precipitate infiltration and irrigation leakage which amount for 83.9 percent of total recharge.However,south to the Weihe River,94.2 percent of total recharge comes from precipitate water and river leakage which are chief factors of the formation of groundwater.On the basis of research mentioned above,the paper puts forth the countermeasures to develop and utilize water resources reasonably,which is important for sustainable use of water resources and benign circulation of the eco-environment.