库姆塔格沙漠水文调查初步结果

Preliminary Results of Hydrological Investigation in Kumtagh Desert

基于2007—2009年的3次野外考察和样品分析,初步研究了库姆塔格沙漠的水文和水化学特性。库姆塔格沙漠水系分为4个分区,即西部区、中部区、东部区和党河区。库姆塔格沙漠地区瞬时径流量普遍较低,东部河流径流量相对较大;泥沙含量普遍较低,平均为1.04 kg.m-3。区域内水体矿化度较高,以微咸水和咸水为主,水化学类型总体上为氯化物-硫酸盐/钠质-钙质水,主要受到沙漠干旱气候和区域地质地貌的影响。

Based on the investigations of the Kumtag Desert from 2007 to 2009 and water samples analysis,the hydrology and the water chemistry in the study region are analyzed.The water system can be divided into four sub-area： the western sub-area,the middle sub-area,the eastern sub-area and the Danghe river sub-area.The instant discharge of the streams and springs are very low except for these in the eastern sub-area.The sediment discharge of most water samples are low,with the average value of 1.04 kg·m^-3.The salinity of the natural waters is commonly high and the hydrochemistry is generally a Na·Ca-Cl·SO4 type,revealing the effect of the arid climate and local geography.