摘要
张掖、高台和临泽沿着黑河一带泉水总量在(10~13)×10^8m^3/a之间,泉水对张掖地区的农业生长、生态环境、工业和人民生活极为重要,近年来虽然泉水量在减少,但基本保持稳定状态。对于泉水的补给来源基本被认为是由黑河等地表径流转换而来的,认为河流在山区排泄地下径流,进入山前平原以后,变成河水补给地下水,而在适当条件下地下水以泉的形式溢出地面,因此构成地表水与地下水相互转化的复杂过程。很多人认为这种过程是水循环的一个组成部分,其表现形式为河水渗漏-溢出-再渗漏-再溢出等,是一种反复转化过程,并称此过程为水资源相互转化多巡回性。笔者结合同位素分析对这种地表水-地下水-泉水-地下水-泉水的多次转换模式产生一定质疑。
The total volume of springs within Zhangye, Gaotai and Linze along the Heihe River amounts to (10-13) × 10^8 m^3/a. Such huge water resources play a most important role in the ecological environment and life quality of Zhangye area. In recent years, the volume of springs keeps steady in general. The recharge of springs was traditionally considered to be the conversion process between surface runoffs of the Heihe River and groundwater. However, an analysis of series of isotopic data has led the authors to raise some queries on this traditional conversion model.
出处
《地球学报》
EI
CAS
CSCD
北大核心
2005年第B09期309-311,共3页
Acta Geoscientica Sinica