水土保持学报2017，Vol.31Issue(2)：61-66,6.DOI:10.13870/j.cnki.stbcxb.2017.02.012
黄土丘陵区不同撂荒年限土壤入渗及抗冲性研究
Research on Soil Infiltration Capacity and Soil Anti-scouribility on Different Abandoned Land in the Loess Hilly Region
摘要
Abstract
In order to evaluate the influence of vegetation restoration on soil properties of the abandoned land,in the paper we adopt the spatio-temporal substitution method,and took the abandoned land at different stages in the Loess Hilly Region as the research object.By combining with laboratory experiments and physiochemical analysis,soil infiltration and anti-scouribility were studied through the point-source infiltration method and undisturbed soil erosion experiment.The results indicated that.:at the same abandoned stage,initial infiltration rates (IIRs),stable infiltration rates (SIRs),average infiltration rates (AIRs),and anti-scouribility (AS) decreased with the increasing soil depth.As the abandoned stage extended,initial infiltration rates (IIRs),stable infiltration rates (SIRs),average infiltration rates (AIRs),and anti-scouribility (AS) in the surface layer increased significantly after the first pre abandonment,then gradually stabilized.The differences in abandonment phase was significantly greater than that between the soil layer.In the Loess Hilly Region,the Kostiakov model could effectively characterize the initial infiltration rate,and the correlation coefficient was 0.999 1.The Fang Zhengsan model parameters 1 and K could simultaneously characterize the initial infiltration rate and stable infiltration rate,the correlation coefficients was 0.869 4 and 0.998 1,respectively.Its initial infiltration rate was not as good as that of the correlation of the Kostiakov model.The process of soil infiltration could be well described by combining Kostiakov model and Fang Zhengsan model.关键词
土壤理化性质/土壤入渗性能/土壤抗冲性/黄土丘陵区/撂荒阶段Key words
soil physicochemical properties/soil infiltration capacity/soil anti-scouribility/hilly Loess Plateau/abandonment stages分类
农业科技引用本文复制引用
李超,周正朝,朱冰冰,覃淼..黄土丘陵区不同撂荒年限土壤入渗及抗冲性研究[J].水土保持学报,2017,31(2):61-66,6.基金项目
国家自然科学基金项目(41571260,41501290) （41571260,41501290）
陕西省自然科学基金项目(2014KJXX-52) （2014KJXX-52）
