小浪底库区坡地不同景观配置对土壤水分时空分布及产流产沙影响  

Effect of different slope landscape patterns on spatial and temporal variations of soil water,runoff and sedimentation in Xiaolangdi Reservoir area.

作　　者：苏子友[1] 吴文良[1] 张劲松[2] 姜广辉[1] 贾长荣[3] 李剑侠[3] 薛茂盛[3] 李中福[3] 

机构地区：[1]中国农业大学资源与环境学院,北京100094 [2]中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 [3]河南省济源市林业局,济源454650

出　　处：《中国生态农业学报》2007年第4期78-81,共4页Chinese Journal of Eco-Agriculture

基　　金：科技部社会公益性项目(2003DIB4J142);国家十五攻关课题(2004BA510B11)资助

摘　　要：以小浪底水库库区6种主要坡地景观类型(免耕农田、传统耕作农田、撂荒地、果园、林地、间作地)为例,研究了坡地不同景观配置对土壤水分时空分布及其产流产沙的影响。研究结果表明,雨季末期农田景观配置(免耕、传统耕作)土壤含水量的增量是撂荒地、果园、林地、间作地景观的1.51、2.32、5.63、2.66倍,蓄水效率比撂荒地、果园、林地、间作地分别高7.06%、11.92%、17.23%、13.07%。土壤水分的垂直梯度变化可归纳为增长型、降低型和波动型和增长降低4种类型;径流和泥沙总量林地最少,农田传统耕作最多,其径流量是林地的13.9倍。Spatial and temporal variations of Soil water, runoff and sedimentation on six slope landscape patterns （notillage cropland, conventional tillage cropland, fallow land, orchard, woodland, intercropped land） in Xiaolangdi Reservoir area were investigated. Results show average increased soil water content of cultivated slope landscapes （no-tillage and conventional tillage ） to be 1.51,2.32,5.63, and 2.66 times of that of fallow land, orchard, woodland and intercropped land respectively, and with 7.06 %, 11.92 %, 17.23 % and 13.07 % higher average water storage efficiency at the end of the rainy season. Vertical changes in moisture across the soil profile are grouped into four clusters： increasing, decreasing, fluctuating, and increasing-decreasing tendencies.. Woodland slope has the least accumulated runoff and sedimentation while conventional tillage cropland has the highest of all the slope landscape patterns. Accumulated runoff and sedimentation for conventional tillage cropland is 13.9 times of that of forest landscape.

关 键 词：小浪底库区 景观配置 土壤水分 径流 侵蚀泥沙 

分 类 号：S152.7[农业科学—土壤学]