Measurement and simulation of wind erosion, roughness degradation and residue decomposition on an agricultural field
Measurement and simulation of wind erosion, roughness degradation and residue decomposition on an agricultural field
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DOI:
10.1002/esp.1037
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发表时间:
2003-10
影响因子:
3.3
通讯作者:
S. van Donk;E. Skidmore
中科院分区:
文献类型:
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作者:
S. van Donk;E. Skidmore
The Wind Erosion Prediction System (WEPS) includes submodels to simulate soil erosion by wind, roughness degradation and residue decomposition. These WEPS submodels were tested using data measured on a 600 m by 415 m farmer's field, planted with winter wheat, near Burlington, Colorado, USA. Big Spring Number Eight (BSNE) samplers were used to measure wind blown sediment flux and automated devices (Sensits) detected saltating sediment. A weather station recorded relevant meteorological data. Detailed measurements of field surface conditions were taken on three dates. One significant dust storm occurred during the experimental period (November 2000 to April 2001). Spatial variability of sediment discharge was high. This could partially be explained by spatial differences in residue cover and mass, leaf area index, sand fraction and wetness of the surface soil.