地理科学 ›› 1982, Vol. 2 ›› Issue (3): 254-263.doi: 10.13249/j.cnki.sgs.1982.03.254

• 论文 • 上一篇    下一篇

三江平原沼泽对河川径流影响的初步探讨

陈刚起, 张文芬   

  1. 中国科学院长春地理研究所
  • 出版日期:1982-05-20 发布日期:1982-05-20

A PRELIMINART APPROACH TO THE INFLUENCE OF THE SWAMPS IN THE THREERIVER PLAIN ON RIVER RUNOFF

Chen Gangqi, Zhang Wenfen   

  1. Changchun Institute of Geography, Academia Sinica
  • Online:1982-05-20 Published:1982-05-20

摘要: 探讨沼泽与河川径流间的关系和机制是研究沼泽地区环境演化,建立最傥生态环境结构的重要课题之一,也是生产实践中亟待解决的实际问题。三江平原是我国沼泽集中分布区域之一,沼泽面积1700多万亩,约占整个平原区的22%。沼泽及沼泽化土地大规模开垦后,河川径流将发生相应变化,为预见这种变化,首先应研究沼泽对河川径流的影响。本文试图从分析典型沼泽性河流的水文资料出发,参考部分径流实验资料,探讨在三江平原区特定的自然条件下,沼泽对河川径流的影响。

Abstract: This paper attempts so approach the effect of swamp on river runoff under the special natural conditions of the Sanjiang plain through the establishment and analysis of the relation between annual rainfall and runoff of swampy rivers.The results of analysis show that the influence of the swamp in this area on river runoff is presented as follows:runoff volume,runoff increment,intercept of correlation curve,precipitation needed for creating surface flow,runoff during dry years and laging time of annual runoff are all related to swamp distribution.This kind of influence varies with the geomorphological location on which swamp lies,and related to climatic changes over years.The swamp distributed on piedmont dip plains and river terraces influences river runoff mainly through feed changes.Runoff increment caused by every precipitation increment in swampy basins is larger than that in non-swampy basins during continuous high-water years,while it is quite contrary during continuous low-water years.The swamp in these basins plays a part in intensifying runoff changes over years.The swamp developed on flood plain regulates runoff principally through its storage and permeable characteristics for water just as lakes and reservoirs take effect on making yearly changes of river runoff even.