中文摘要：

本研究于2009年6-9月,在科尔沁沙地选择主要固沙灌木——小叶锦鸡儿为研究对象,通过对该灌丛的穿透雨和树干茎流的观测,确定了截留量、穿透雨量和茎流量在降雨分配中的比例,分析了降雨量和降雨强度对该灌丛的降雨截留量、穿透量的影响。试验期间,完整观测了穿透雨和茎流量的降雨总共为103.1mm,其中的穿透雨量、茎流量和截留量分别为73.1,4.1和25.9mm,分别占降雨的百分比为70.9%,4.0%和25.1%。回归分析表明该灌丛的穿透雨量、树干茎流量和截留量都与降雨量呈正相关关系,而穿透百分比和截留百分比则与降雨量的指数函数拟合较好;穿透百分比与1h最大降雨强度呈指数相关关系,而截留百分比和1h最大降雨强度与幂函数拟合较好。

英文摘要：

From June to Sepetember 2009,a typical shrub,Caragana microphlla,commonly used to stabilise sand dunes,was selected from Horqin Sandy Land to investigate rainfall redistribution.During the entire experiment,the cumulative amount of rainfall was 103.1mm.The amount of throughfall（TF）was 73.1mm （70.9% of the total rainfall）,of stemflow（SF）was 4.1mm （4.0%）,and of interception（I） was 25.8mm （25.1%）.Regression analysis showed a significant positive linear correlation between rainfall and TF,SF,and I.The correlation between rainfall and TF% is well represented by an exponential function as is I%.Furthermore,TF% was an exponential function of the rain intensity in 1hour（Ih）,but for I% was a power function of Ihin this experiment.