摘要
分析了坡地农田和草地生态单元降雨产流过程，提出了一种利用降雨产流资料计算坡地单元平均入渗速率的方法。此方法克服了双环法测定坡地土壤入渗速率的固有缺陷，为研究坡地水量转化提供了便利手段。计算结果表明，农田、草地生态单元土壤平均入渗速率随坡度的增加呈指数曲线下降。
The elemental rainfall runoff theories of fields and grasslands were analyzed, and a method calculating elemental average infiltration ratio based on the data of rainfall runoff was also given. This method surmounts the intrinsic shortcomings of one dimensional experiment of vertical infiltration determining soil infiltration on slopes, and provides a convenient means for studying water interaction in slope land. The calculating results showed that elemental average infiltration ratio decreases with the increase of slope degrees.
基金
国家科技攻关项目
中国科学院"百人计划"资助项目
