Characteristics of Runoff and Infiltration on Various Land Used Slopes in Granite Area

Ruan Fushui; Zhou Fujian

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Characteristics of Runoff and Infiltration on Various Land Used Slopes in Granite Area

更新时间：2024-11-07

- Characteristics of Runoff and Infiltration on Various Land Used Slopes in Granite Area
- Vol. 10, Issue 3, Pages: 1-7(1996)
- 作者机构：
  
  福建水土保持试验站,福州,350003
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：1996
- 稿件说明：
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Ruan Fushui, Zhou Fujian. Characteristics of Runoff and Infiltration on Various Land Used Slopes in Granite Area[J]. 1996, 10(3): 1-7.
DOI：

Ruan Fushui, Zhou Fujian. Characteristics of Runoff and Infiltration on Various Land Used Slopes in Granite Area[J]. 1996, 10(3): 1-7. DOI：

摘要

根据安溪官桥径流小区实测资料，确定了不同利用坡地临界产流降雨标准。结果表明，植被较好的林果茶坡地很少有地表径流产生。以这类坡地为主的流域，坡地地表直接补给河流的比例很小，壤中流（表层流）和地下水流可能在造峰过程中起决定性作用；而在自然裸地，坡地地表直接补给河流的径流比例可达７０％，地表快速汇流是造峰主导因素。坡地产流期内降雨损失率随产期内降雨平均强度的增大而增加，两者呈幂函数关系：ｆ＝ａｉｂ，从Ⅰ类→Ⅱ类→Ⅲ类→Ⅳ类坡地，ａ，ｂ值减小；坡地土壤入渗特征曲线呈ｆ＝ａｅ（－ｂｔ）关系。

Abstract

Based on the measured data obtained from Anxi

the Curves of the orifical runoff precipitation have been established on various slopes. The results show that the coefficient of surface runoff is below 5% and subsurface and underground flow would be dominant factor to make the flood on the slopes with good vegetation cover

and on the undisturbed bare slopes the coefficient is over 45% and the surface flow would be determinant to form the flood. The relationship between the precipitation loss and intensity f=aib have been set up on various slopes

and the curves of infiltration process f=ae-bt also have been simulated on the basis of analyzing to the process curves of precipitation and runoff. It is point that a would be main influenced by precipitation intensity and the advanced rainfall

and b would be determined by advanced rainfall.

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