WU Fa-qi,ZHAO Xiao-guang,LIU Bing-zheng.Analysis of the Effect of Rainfall and Infiltration on Runoff in Gently Sloping Farmland[J].Research of Soil and Water Conservation,2000,7(01):12-17,37.
缓坡耕地降雨、入渗对产流的影响分析
- Title:
- Analysis of the Effect of Rainfall and Infiltration on Runoff in Gently Sloping Farmland
- Keywords:
- rainfall infiltration; runoff gently farmland; Loess Plateau
- 分类号:
- S157.1
- 摘要:
- 以彬县、永寿、西峰、黄龙和淳化径流场近30年的598组小区观测资料为样本，对缓坡耕地降雨、入渗与产流的关系进行了统计分析。得出：降雨量、降雨历时与径流模数呈幂函数关系，平均降雨强度与其呈对数函数关系；P60、I60与产流关系密切，降雨组合参数则为PI15；下渗是导致径流量随坡度增大而增加，随坡长加长呈波浪式变化的内在原因之一，并给出了产流预报模型。
- Abstract:
- Dealing with the effect of rainfall and infiltration on runoff in gently sloping farmland,on the basis of 598 groups data of runoff plots nearly 30 years from Bin county,Yongshou,Huanglong,Xifeng and Chunhua station.Some results are given out.It is that the relation between precipitation.rainfall duration and runoff is power function,mean rainfall density and runoff is logarithm function.P60,I60 and rainfall comprehesive factor PI15 have good relation of runoff. Runoff amount increasement along with slope and runoff amount wave motion change result in rainfall infiltration.Finally, give out an equation of runoff prediction.
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备注/Memo
收稿日期:2000-1-1
基金项目:国家“九五”重点科技攻关计划项目，编号为96-004-05-07