地理科学 ›› 1986, Vol. 6 ›› Issue (4): 348-356.doi: 10.13249/j.cnki.sgs.1986.04.348

• 论文 • 上一篇    下一篇

石羊河流域水文化学特征分布规律及演变

刘亚传   

  1. 中国科学院兰州沙漠研究所
  • 出版日期:1986-07-20 发布日期:1986-07-20

FEATURES, DISTRIBUTION LAW AND EVOLUTION OF HYDROCHEMISTRY IN THE SHIYANGHE RIVER BASIN

Liu Yachuan   

  1. Institute of Desert, Academia Sinica
  • Online:1986-07-20 Published:1986-07-20

摘要: 本文研究了石羊河流域各种水体——大气降水、地表水、地下水的水化学特征、分布规律及其演变,水化学分布具有生物气候带规律,从源头冰雪带到终端湖白亭海,随海拔降低、降水量减少、流程加长,矿化度递增。水质的演变则是自然和人为两种因素综合作用的结果。

Abstract: The Shiyanghe River is an inland river, situated in the eastern part of Hexi Corridor in Gansu province, and originates from the Lenglong Ridge of the Qilian Mountain, Its tail water disappears in the desert, which is typical in arid zones. The freshest water body in the basin is precipitation——snow, the TDS ranges between 31.12—38.49mg/l. The highest mineralized water body is the Baitinghai Lake water, the TDS is 375g/l. The chemical properties of various water bodies are subject to the whole bioclimatic zone. The TDS increases with the decreases of both altitude and precipitation, The evolution of water quality is influenced both natural and artificial factors. For example, the intensive exploitation of ground water is an important factor causing the increase of salt content in ground water.