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| Research on regular of wind erosion on road slope under different protection in semi-arid area of Northwest China |
| He Fan<sup>1</sup>,Jiang Yulin<sup>2</sup>,Yin Jing<sup>1</sup>,Chen Zongwei<sup>2</sup>,Chen Xueping<sup>2</sup>,Wang Xiaodong<sup>3</sup> |
| 1.College of Resources Science and Technology,Beijing Normal University,100875;2.Center for Sustainable Transportation,China Academy of Transportation Science,MOC,P.R.China,100029;3.Beijing Forestry University,100083: Beijing,China |
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Abstract In order to study the mechanism of soil erosion on road and provide the guideline for soil and water conservation in northwest China,experiment sites were located at Guyuan section along Yinchuan to Wuhan highway and several observation plots were selected according to different protection styles of road slope.The regular of wind erosion on a new road slope in semi-arid area in northwest China was conducted.The result shows that there is significant logarithmic relationship between intensity of wind erosion and wind velocity,and sequence of threshold wind velocity is: hexagonal brick>arched frame>compaction by machine>unprotected.Hexagonal brick is the best one for the preventing wind erosion and arched frame take second place,compaction by machine is the worst.The relative soil loss ratio of road slope with hexagonal brick protection is 0.35,and that of road slope with arched frame and compaction by machine are 0.55 and 0.91,respectively.
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Received: 24 April 2007
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