地理科学 ›› 2001, Vol. 21 ›› Issue (3): 262-266.doi: 10.13249/j.cnki.sgs.2001.03.262

• 论文 • 上一篇    下一篇

黄土丘陵沟壑区小流域降雨入渗产流点面转化

袁建平1,2, 蒋定生3   

  1. 1. 北京师范大学资源与环境科学系, 北京100875;
    2. 水利部水土保持监测中心, 北京 100053;
    3. 中国科学院、水利部水土保持研究所, 陕西 杨凌 712100
  • 收稿日期:2000-04-02 修回日期:2000-09-20 出版日期:2001-05-20 发布日期:2001-05-20
  • 基金资助:
    国家杰出青年科学基金(49725103)和博士后科研基金共同资助。

Research on Transforming Relation from Point to Area of Infiltration Rate on Small Watershed for Hilly and Gully the Loess Region

YUAN Jian-ping1,2, JIANG Ding-sheng3   

  1. 1. Department of Resources and Environment, Beijing Normal University, Beijing 10087;
    2. Monitoring Center of Soil and Water Conservation, Miusitry of Water Resources; Beijing 100053;
    3. Institute of Soil and Water Conservation, Chinese Academy of Sciences & Ministry of Water Conservancy, Yangling District, Shaanxi Province 712100
  • Received:2000-04-02 Revised:2000-09-20 Online:2001-05-20 Published:2001-05-20

摘要: 在充分考虑小流域土壤入渗速率点面转化及地表结皮等影响因素在内的基础上,提出了小流域土壤入渗速率点面转化公式:fm=fn×Sn/S×an×bn。以纸坊沟小流域为例,将实测的流域土壤入渗速率值(点渗值)利用上式进行转化(面渗值),并与流域径流出口观测站由降雨径流观测值根据水量平衡原理推算出的面渗值进行对比,平均相对误差仅为2.42%。初步得出流域土壤面渗率与不同治理度、年内5~9月降雨总量间的单因子和复合因子高精度回归方程,为流域综合治理后的水资源量变化趋势提供一条量化途径。

Abstract: Based on effect factors of transforming from point to area of infiltration rate and crust etc., put forward the formula of changing soil point's infiltration rate to area's rate on small watershed, which is fm=fn譙n/S譨n譩n. Here, fm is the average soil area's infiltration rate(mm/min) on behalf of different land using models and topography and landforms, fn is the average soil point's infiltration rate(mm/min) under different land using models and topography and landforms through many field tests, Sn represents areas of different land using models(hm2), S is Watershed's area(hm2), an means correct coefficient thinking the effect of crust and system mistake etc., bn is the parameter thinking the effect of soil's water content. Comparing the area's infiltration rate between transforming value and observing value, the result showed that relative error was only 2.42 percent., Preliminary gain the equations, which have high precision including single and fixed factors equations between soil area's infiltration rate and different soil control degree, rain quantity. The method is advantageous for seeking rain, runoff, infiltration's changing trend after comprehensive control on small watershed.

中图分类号: 

  • S157.2