The role of vegetation in the retardation of rill erosion

被引:77
作者
Woo, MK
Fang, GX
diCenzo, PD
机构
[1] GUANGZHOU INST GEOG,GUANGZHOU 510070,PEOPLES R CHINA
[2] UNIV TORONTO,ERINDALE COLL,DEPT GEOG,MISSISSAUGA,ON L5L 1C6,CANADA
关键词
vegetation; rill erosion; sediment; South China;
D O I
10.1016/S0341-8162(96)00052-5
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Large rills with catchment areas measuring tens to hundreds of square metres pose serious soil erosion problems to South China, after deforestation has exposed the deeply weathered granitic slopes to the impacts of tropical rainstorms. Runoff and sediment discharges of rips respond rapidly to rainfall, but compared with bare rills, vegetated rills show considerably lower amounts of flow and sediment yield from unit rainfall input. Rainfall interception is one main reason for reduced runoff, and enhanced infiltration also lowers surface flow from vegetated areas. Potential sediment yield from unit runoff is greatly reduced when the rills are grown with fern, and this provides a far more effective mechanism for soil erosion control than the more temporary measures of installing sediment traps along the rills.
引用
收藏
页码:145 / 159
页数:15
相关论文
共 19 条
[1]  
BRYAN RB, 1990, CATENA SUPP, V17, P111
[2]  
Covers G., 1987, CATENA S, P17
[3]  
GILLEY JE, 1986, T ASAE, V29, P161
[4]  
Gray D., 1970, Handbook on the principles of hydrology
[5]  
Hudson N.W., 1981, SOIL CONSERV
[6]   EFFECT OF ANTECEDENT SOIL-MOISTURE CONTENT ON RAINWASH EROSION [J].
LUK, SH .
CATENA, 1985, 12 (2-3) :129-139
[7]  
Morgan R.P.C., 1977, 4 NAT COLL AGR ENG S
[8]  
MORGAN RPC, 1986, SOIL EROSION CONSERV
[9]  
PLANT WJ, 1987, J HOPKINS APL TECH D, V8, P55
[10]   HYDRAULIC AND SOIL MECHANICAL ASPECTS OF RILL GENERATION ON AGRICULTURAL SOILS [J].
RAUWS, G ;
GOVERS, G .
JOURNAL OF SOIL SCIENCE, 1988, 39 (01) :111-124