Transformation of Erosion Types on Loess Slope by REE Tracking
REE Tracking was adopted to study the transformation of erosion types on loess slope and the results indicated that the slope runoffs was correlated with the erosion ratios at the coefficients ranging within 0.84~0.94 and this indicated the variation tendency of erosion ratios basically agreed with the runoffs; the major erosion type is sheet erosion during the initial slope runoff generation and the sheet erosions separately accounted for 71％, 48％ and 49％ of the total; as rainfalls went on, the rill erosions continuously increased, indicating gradual transformation from sheet erosion into rill erosion. The examination of the origins of erosion silts revealed the relative erosion was always below 10％ in the upper slope section; comparison of the relative rill erosions in different slope sections showed that rill erosions mainly originated in the section spanning from 0 to 4 m away from slope foot.
natural rainfall soil erosion transformation REE tracking rare earths
Shen Zhenzhou(申震洲) Liu Puling(刘普灵) Xie Yongsheng(谢永生) Yang Mingyi(杨明义) Li Mian(李勉) Lian Zhenlong(连振龙)
Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resource Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003,
国际会议
第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)
包头
英文
67-73
2007-08-07（万方平台首次上网日期，不代表论文的发表时间）