雷州半岛降雨特性与地表径流关系的小区试验

Plot Trials on the Relationship of Rainfall Characteristics with Runoff in Leizhou Peninsular

通过对试验小区观测值的分析和研究 ,发现本地区径流量与降雨量呈线性正相关 ,径流量与各瞬时雨强表现出幂函数的关系。径流量与降雨参数 (降雨量、30min最大瞬时雨强和降雨历时 )之间的三元线性回归分析表明 ,除裸地相关性不显著外 ,林地和农地相关性都达到极显著水平 ,可作为估测该区径流量大小的指标。

Based on the analysis of the observed data from the runoff plot trials, there exists a positive linear correlation between the rainfall rate and the runoff rate, and the power function correlation between the runoff rate and various instantaneous rainfall rate. According to the linear-regression equations, apart from bareland, there also exists a significantly positive correlation in forestland and farmland between rainfall parameters (rainfall rate, maximum rainfall rate during 30min and rain duration) and runoff rate. This linear-regression equations can be used to estimate the runoff rate in Leizhou Peninsular.