中国农业科学(英文版)2004，Vol.3Issue(1)：31-36,6.
Sediment Load in Runoff Under Laboratory and Field Simulated Rainfall
Sediment Load in Runoff Under Laboratory and Field Simulated Rainfall
JIN Ke 1Wouter Schiettecatte 2Koen Verbist 2Donald Gabriels 2Roger Hartmann 2CAI Dian-xiong2
作者信息
- 1. Soil and Fertilizer Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, P.R. China
- 2. Department of Soil Management and Soil Care, Ghent University, 9000 Gent, Belgium
- 折叠
摘要
Abstract
Soil erosion is one of the most important problems in the Loess Plateau of China affecting sustainable agriculture. Near Luoyang (Henan Province, China), field plots were constructed to measure soil erosion rates under conventional tillage practices using field-simulated rainfall. Field rainfall experiments were carried out to compare previous results from laboratory rainfall simulations on the same soil for interrill conditions. Although in the laboratory experiments, a strong correlation was found between the stream power of the runoff water and the unit sediment load, this sediment transport equation overestimated the field rainfall simulation results. Another sediment transport equation derived by Nearing et al. for rill erosion was in better agreement with the results of the field experiments, although it also overestimated these values. The measured sediment load values during the field rainfall simulations were also lower than those found during field experiments on the same soil but with a loosened surface layer. This difference indicates the importance of soil physical condition of surfce like soil structure and aggregate size, which may contribute to the discrepancy between the field and laboratory experiment results.关键词
Stream power/Runoff/Sediment load/Rainfall simulationKey words
Stream power/Runoff/Sediment load/Rainfall simulation分类
农业科技引用本文复制引用
JIN Ke,Wouter Schiettecatte,Koen Verbist,Donald Gabriels,Roger Hartmann,CAI Dian-xiong..Sediment Load in Runoff Under Laboratory and Field Simulated Rainfall[J].中国农业科学(英文版),2004,3(1):31-36,6.
