水土保持学报2012，Vol.26Issue(6)：21-26,6.
湘南红壤丘陵区不同生态模式水土流失特征
Characteristics of Soil and Water Loss Under Different Ecological Planting Patterns in Red Soil Hilly Region of Southern Hunan Province
摘要
Abstract
The runoff and soil loss under different ecological planting patterns were studied by monitoring runoff plots located in Qiyang county,Hunan province during 2011.The results showed that:(1)There were 17 times runoff which occurred from March to November,2011,13 times of them concentrated in May,June and August to October.The distribution characteristics of runoff was the same as rainfall.(2)The average annual total runoff of 8 ecological patterns was 865.99 m3/hm2 with a range from 238.12 m3/hm2 to 1 422.08 m3/hm2.The average annual total soil loss of 8 treatments was 25.163 t/hm2 with a range from 0.072 t/hm2 to 67.570 t/hm2.The differences of annual runoff and soil loss among different ecological patterns were both significant(p〈0.01).(3)The runoff under different ecological patterns was increasing with the rainfall increasing;rainfall was one of the most important factors affecting soil loss.The large rainfall(〉50 mm)and high intensities rain had significant effects on losses of soil and water in red soil sloped land.The effects of precipitation on soil moisture content under different ecological patterns showed the characteristics of "strong,general,weak" from spring to autumn.The dynamic change of soil moisture content under each planting pattern was almost the same and changed with each rainfall.(4)The soil and water losses of treatment with tea-oil tree planted in terrace was very serious when tea-oil tree was young,losses amount was only less than the treatments of the wasteland pattern(control) and natural sloped cropping patterns.However,the soil and water losses were much less if the terraces planted tea-oil tree were covered with rice straw or intercropped forage legume or peanuts.关键词
红壤丘陵区/生态模式/地表径流/土壤侵蚀Key words
red soil hilly region/ecological pattern/runoff/soil erosion分类
农业科技引用本文复制引用
袁敏,文石林,秦琳,董春华..湘南红壤丘陵区不同生态模式水土流失特征[J].水土保持学报,2012,26(6):21-26,6.基金项目
国家科技支撑计划重点项目 （）
公益性行业（农业）科研专项经费项目 （）
