红壤区生态公益林不同类型林分降雨及产流与产沙量研究  

Study on the rainfall of runoff and sediment yield in different types forest stand of ecological forest in red soil regions

作　　者：杨楠[1] 田育新[1] 李锡泉[1] 牛艳东[1] 姚敏[1] 

机构地区：[1]湖南省林业科学院,湖南长沙410004

出　　处：《湖南林业科技》2011年第5期39-43,共5页Hunan Forestry Science & Technology

摘　　要：通过对湘中丘陵红壤区不同类型林分的定位观测,对林地不同年份因降雨量差异而产生的径流量、泥沙含量的差异进行对比分析。结果表明:降雨量较大的2010年林地的径流量、泥沙含量、径流系数均大于相对干旱的2009年;径流量、泥沙含量的大小与大雨量降雨的次数和降雨量密切相关。Based on the data of the orientation observation of different forest area types in the red soil regions of hill area in South Hunan, the difference of runoff and sediment yield were comparative analyzed between drought and rainy years. The results showed that the runoff, sediment yield and coefficient of runoff of the rainy year （2010） were bigger than the drought year （2009） . The magnitudes of runoff and sediment yield were closely related to the frequency and rainfaLl values of large rainfall events.

关 键 词：降雨量 径流量 泥沙含量 径流系数 

分 类 号：S157.1[农业科学—土壤学]