降雨对坡面产沙及土壤养分流失的影响研究  

Study on Sediment and Nutrient Loss from Soil in Sloping Land under Different Rainfall Intensities

作　　者：吕兴娜[1] 尚佰晓[1] 王莉[2] 

机构地区：[1]铁岭市环境保护科学研究院,辽宁铁岭112000 [2]铁岭市水土保持站,辽宁铁岭112000

出　　处：《干旱环境监测》2011年第1期18-23,共6页Arid Environmental Monitoring

基　　金：国家"十一五"重大科技项目(2009ZX07526-005)

摘　　要：为研究天然降雨条件下坡面产沙及土壤养分流失的变化规律,根据当地不同的种植模式,在野外标准径流小区进行试验。结果表明,采用玉米顺垄耕作坡面产沙量同I30关系最为密切,产沙量随I30的增大而增多;采用玉米横垄的耕作方式时,坡面产沙量同降雨量和降雨强度没有明显的变化规律。降雨量对径流中土壤养分流失量的影响不明显,而径流中土壤养分流失量同I30的增减则表现出相同的变化趋势。Based on local different cropping model,the authors studied sediment and nutrient loss from soil in slopping land under different rainfall intensities with different runoff by use of the field scouring experiments in the standard plots in this study.The results showed that sediment discharges had a close relationship with I30 in traditional the ridge along slope.sediment discharges had no clear relationship with I30 in traditional the horizontal along slope.Effect of soil nutrient loss under rainfall was not apparent.Soil nutrient loss had same change trend with I30.

关 键 词：降雨 坡面 产沙 养分流失 

分 类 号：X171.1[环境科学与工程—环境科学]