吉林省低山丘陵区水土保持措施减蚀效应研究  

Study on the Effect of Soil Erosion Reduction Corresponding to Water and Soil Conservation Measures in Jilin Low Mountain and Mound Area

作　　者：韩富伟[1] 张柏[1] 王宗明[1] 宋开山[1] 李建平[1] 

机构地区：[1]中国科学院东北地理与农业生态研究所

出　　处：《吉林农业大学学报》2007年第6期668-672,共5页Journal of Jilin Agricultural University

基　　金：中国科学院知识创新工程重要方向项目(KZCX3-SW-356);国家自然科学基金项目(40371082);国家自然科学基金项目(40401003)

摘　　要：对吉林省梅河口市吉兴小流域2004年7个试验小区的径流和产沙情况进行了测定,并将各小区年产沙量换算成土壤侵蚀模数,其中裸地和顺垄试验小区最高,分别为3 070.70,3 008.40 t/km2;地埂植物带、荒山灌木梗小区侵蚀模数略小,分别为629.50,601.40 t/km2;横垄试验小区侵蚀模数297.20 t/km2;生态修复试验小区侵蚀模数只有85.20 t/km2,水平台田试验小区几乎没有产生侵蚀。从产流量来看,裸地试验小区年径流深为27.10 mm,顺垄试验小区年径流深为24.50 mm,水平台田试验小区几乎没有产生径流。对各水保措施的水土保持效益进行了计算,结果表明顺垄试验小区水土保持效益最差,地埂植物带、荒山灌木梗试验小区水土保持效益居中等水准,生态修复试验小区水土保持效益较高,横垄试验小区改垄效益相当明显,水平台田试验小区水土保持效益最高。Through the results of runoff and silt observation mensuration of seven experiment plots in Jixing small watershed, Meihekou City, the silt quantum of year 2004 was converted to soil erosion moduIts. The soil erosion modulus of bare field and bedding ridge plot was 3 070.70 t/km^2 and 3 008.40 t/km^2 respectively; the modulus of field bund floral zone and fell bush bund plot was 629.50 t/km^2 and 601.40 t/km^2; modulus of lagging ridge plot was 297.20 t/km^2; modulus of ecology restoration plot was only 85.20 t/km^2 ; and the plot of horizontal platform field scarcely produces soil erosion. Seen from runoff quantum, the yearly runoff depth of bare field plot was 27.10 mm; the yearly runoff depth of bedding ridge plot was 24.50 mm; correspondingly, horizontal platform field plot scarcely brings runoff. Finally, the water and soil conservation benefit of different measures was summarized, the benefit of bedding ridge plot was the worst; the benefit of field bund floral zone and fell bush bund plot was in medium level; the benefit of ecology restoration and lagging ridge plot was very well; and the benefit of horizontal platform field plot was the best. The study of water and soil conservation benefit of different measures can provide foundation for local region＇s cultivation method.

关 键 词：低山丘陵区 径流小区 土壤侵蚀 水土保持措施 减蚀效应 吉林省 

分 类 号：S157[农业科学—土壤学]