地理科学 ›› 1982, Vol. 2 ›› Issue (2): 143-153.doi: 10.13249/j.cnki.sgs.1982.02.143

• 论文 • 上一篇    下一篇

洋河流域自然景观的地球化学特征

王景华, 郑建勋   

  1. 中国科学院地理研究所
  • 出版日期:1982-03-20 发布日期:1982-03-20

GEOCHEMICAL CHARACTERISTICS OF NATURAL LANDSCAPE IN YANGHE VALLEY

Wang Jinghua, Zheng Jianxun   

  1. Institute of Geography, Academia Sinica
  • Online:1982-03-20 Published:1982-03-20

摘要: 北京官厅水库是由洋河、桑干河和妫水河汇水而成。其中洋河是主要河流,对官厅水库水环境的地球化学形成有重要作用。它的上游由东洋河、西洋河和南洋河组成。三者于河北省张家口地区的柴沟堡汇合,又流经宣化,下花园等地,进入官厅水库。整个流域面积大约14140平方公里,全长250公里。官厅水库水环境的变化除了受工业污染影响外,上游地区自然景观的类型及其地球化学特征,也是影响和控制水环境发展的重要因素之一。

Abstract: This paper gives consideration to the formation of the natural landscape in the Yanghe valley and the transporting and cumulating law of chemical elements in landscape.The landscape pattern in the valley is classified according to the landscape system of landscape-type,landscape-order,landscape-species,and landscape-subspecies.The trace elements contents in the basin-landscapeare higher than those in the motmtain-landscape;for example,the average content of Cu is mostly 24.6 ppm,of As,4.7 ppm,of Ni,20.9ppm in the mountani-landscape,while concentrations of Cu,As,Ni in the basin landscape are respectively 39.9,7.5,and 26.1 ppm.As a result,it causes an increase of Cu,As,Ni,Hg,Zn content of cultivated crop in the basin-landscape.Human activity has a strong influence upon the landscape.As in the basin-landscape region,the population is dense and its industry and agriculture are well-developed,it will also be the region with the chemical elements concentrated.