Characteristics of Rainfall Interception by Shrubs in Xishui Forest District of Qilianshan Mountains
Based on the field experimental data from May to September 2014,we took the five typical shrubs:Salix gilashanica,Caragana jubata,Dasiphora fruticosa,Berberis diaphana,and Caragana tangutica of Pailugou Watershed in Qilianshan Mountains as test samples,and investigated the characteristics of rainfall interception of five typical shrubs in Qilianshan Mountains by field survey and statistical analysis method,and analyzed impact of rainfall characteristics on rainfall redistribution of shrubs.Results showed that 40 events of rainfall were observed,and the total amount of rainfalls was 292.4 mm,as a whole,the rainfall events with 2～10 mm had the highest frequency.The amounts of through fall of Salix gilashanica,Caragana tangutica,Caragana jubata,Dasiphora fruticosa and Berberis diaphana,were 183.5 mm,174.3 mm,168.8 mm,166.1 mm and 165.7 mm,respectively.And interception amounts were 108.mm 9,123.6 mm,106.4 mm,82.1 mm and 73.5 mm,respectively.The amounts of through fall and interception of Salix gilashanica,Caragana jubata,Dasiphora fruticosa,Berberis diaphana,and Caragana tangutica increased in a significant positive linear correlation with increase of rainfall depth (p ＜ 0.001).The relationship of through fall percentage and interception percentage of shrubs with rainfall could be fitted by logarithmic curve(p＜0.001).
国家科技期刊平台
NSTL
万方数据
维普
