A review on rill erosion process and its influencing factors

被引：60
|
作者：
Sun Liying [1 ,2 ,3 ]
Fang Haiyan [1 ]
Qi Deli [1 ]
Li Junlan [1 ]
Cai Qiangguo [1 ,2 ,3 ]
机构：
[1] Chinese Acad Sci, Key Lab Water Cycle & Related Land Surface Proc, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
[2] Chinese Acad Sci, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Peoples R China
[3] Minist Water Resources, Yangling 712100, Peoples R China
来源：
CHINESE GEOGRAPHICAL SCIENCE | 2013年 / 23卷 / 04期
基金：
中国国家自然科学基金;
关键词：
rill initiation; rill erosion; rill network; critical condition; SEDIMENT TRANSPORT CAPACITY; CONCENTRATED FLOW EROSION; INTERRILL OVERLAND-FLOW; CRITICAL SHEAR-STRESS; SOIL ORGANIC-CARBON; AGGREGATE STABILITY; TILLAGE EROSION; WATER EROSION; LOESS PLATEAU; SLOPE LENGTH;
D O I：
10.1007/s11769-013-0612-y
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Rills are frequently observed on slope farmlands and rill erosion significantly contributes to sediment yields. This paper focuses on reviewing the various factors affecting rill erosion processes and the threshold conditions of rill initiation. Six factors, including rainfall, runoff, soil, topography, vegetation and tillage system, are discussed. Rill initiation and network are explored. Runoff erosivity and soil erodibility are recognized as two direct factors affecting rill erosion and other types of factors may have indirect influences on rill erosion through increasing or decreasing the effects of the direct factors. Certain conditions are necessary for rill initiation and the critical conditions are different with different factors. Future studies should be focused on 1) the dynamic changes of rill networks; 2) the combined effect of multiple factors; and 3) the relationships of threshold values with other related factors.
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页码：389 / 402
页数：14
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