Runoff and soil erosion from highway construction spoil deposits: A rainfall simulation study

被引：42
作者：
Dong, Jianzhi [1 ]
Zhang, Keli [1 ]
Guo, Zhongling [1 ]
机构：
[1] Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Sch Geog & Remote Sensing Sci, Beijing 100875, Peoples R China
来源：
TRANSPORTATION RESEARCH PART D-TRANSPORT AND ENVIRONMENT | 2012年 / 17卷 / 01期
关键词：
Highway construction spoils; Runoff; Soil erosion; Soil erosion modeling; Simulated rainfall; AGRICULTURAL SOILS; SLOPE; ERODIBILITY; COMPACTION; INFILTRATION;
D O I：
10.1016/j.trd.2011.09.007
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
To measure soil loss from these road construction spoils, 30 rainfall simulations involving five rainfall intensities were conducted to study runoff and soil erosion processes on a road in China. Twenty-five of the rainfall simulations were carried out on loose materials five different slopes. Another five rainfall simulations were conducted on compacted road materials with a slope of 30.6%. The results show that soil bulk density has a positive effect on runoff rate, and the effect of slope on runoff rate changes with rainfall intensity. Higher soil bulk density increases soil loss under low rainfall intensity, but decreases soil loss when rainfall intensity is high. Soil loss is positively related to slope, but the relationship differs from that in prior studied of croplands and disturbed lands. Equations for predicting soil erosion from loose materials and compacted road are developed. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：8 / 14
页数：7
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