Using REE Tracers to Measure Sheet Erosion Changing to Rill Erosion

被引：0

作者：

宋炜

刘普灵

杨明义

薛亚洲

机构：

[1] Resource and Environment College, Northwest Sci Tech University of Agriculture and Forestry, Yangling 712100, China ,State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation , Chinese Acade

[2] State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Water and Soil Conservation , Chinese Academy of Sciences and Ministry of Water Resources

来源：

Journal of Rare Earths | 2003年 / 05期

关键词：

geochemistry; soil erosion; erosion type change; REE tracer method; slope land; rare earths;

D O I：

暂无

中图分类号：

P512.2 [剥蚀作用、搬运作用、沉积作用];

学科分类号：

0709 ; 081803 ;

摘要：

Rare earth element(REE) tracer method was used to study sheet erosion changing to rill erosion on slope land. By placing different REE on different soil depth across a slope in an indoor plot, two simulated rainfalls were applied to study the change of erosion type and the rill erosion process. The results indicate that the main erosion type is sheet erosion at the beginning of the rainfalls, and serious erosion happens after rill erosion appears. Accumulated sheet and rill erosion amount increases with the rainfalls time. The percentage of sheet erosion amount decreases and rill erosion percentage increases with time. At the end of the rainfalls, the total rill erosion amounts are 4.3 and 5 times more than sheet erosion. In this paper, a new REE tracer method was used to quantitatively distinguish sheet and rill erosion amount. The new REE tracer method should be useful to future studying of erosion processes on slope lands.

引用

页码：587 / 590 +500

页数：5

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