广西猫儿山小流域场降雨产流过程及特征分析

场降雨条件下小流域的产流过程是水文学研究的热点问题之一。在广西猫儿山代表性林区，利用三角形量水堰，对地表产流过程及其特征进行了系统的研究。结果表明：林外降雨、地表径流和河川径流曲线波动基本一致；洪水产流曲线陡峭，随降雨变化洪水起伏较大，但洪水回落较慢，历时时间较长。河川径流洪峰最大流量与最大雨强几乎同时出现，洪峰的滞后效应不明显；河川径流对大气降水的响应有迟缓型、敏感型和平稳型的特点。河川径流与林外降雨量及前48h降雨量呈极显著相关。

Analysis on the Process and Characteristics of Runoff Formation during Rainfall at Mao'ershan Small Watershed of Guangxi Province

Itg one of the research hotspots for scientists to study runoff yield process and its characteristics of small wa- tershed during the precipitation events. By using the method of measuring weir, it was studied the runoff yield and its process in a typical forest area in Mao＇er shah, Guangxi Province. The results showed that fiver runoff in the basin fluc- tuated in accordance with the rainfall and the surface runoff. The curve of fiver runoff was steep at first, and then the flood peak was formed rapidly and fell smoothly after the rise with long period. The time delay effect of flood peak was not obvious because that maximum flow and rainfall intensity appeared nearly at the same time. The effect of precipita- tion on the surface runoff in the basin has three types, such as delayed - type, sensitive - type and leveling - type. The fiver runoff in the basin was significantly correlated with the out -forest precipitation and precipitation of the last 48 hours.