[1]DONG Miao,YAN Ping,MENG Xiaonan,et al.Effect of Calcium Carbonate on Wind Erosion[J].Research of Soil and Water Conservation,2018,25(05):18-23.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
25
Number of periods:
2018 05
Page number:
18-23
Column:
Public date:
2018-09-06
- Title:
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Effect of Calcium Carbonate on Wind Erosion
- Author(s):
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DONG Miao1,2,3, YAN Ping1,2, MENG Xiaonan1,2, GUO Jinrui1,2, QIAN Yao1,2, WU Wei1,2
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1. Faculty of Geographical Sciences, Beijing Normal University, Beijing 100875, China;
2. State Key Laboratory of Earth Surface Process and Resource Ecology, Beijing Normal University, Beijing 100875, China;
3. MOE Engineering Research Center of Desertification and Blown-sand Control, Beijing 100875, China
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- Keywords:
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calcium carbonate content; threshold wind velocity; wind erosion rate; wind tunnel experiment
- CLC:
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S157.1
- DOI:
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- Abstract:
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Two types of soils from eastern Inner Mongolia, China, were selected as the research samples. Following soil cultivation, the CaCO3 contents in the soils reached 0%, 2%, 5%, 8%, and 12%, respectively. The relationship of CaCO3 contents with threshold wind velocity and wind erosion rates was analyzed through wind tunnel experiment and the following conclusions were obtained:(1) As CaCO3 content increased, the threshold wind velocity for soils first increased and then decreased. The threshold wind velocity was highest when the CaCO3 content was approximately 5%. (2) Regardless of the CaCO3 contents in the soils, the wind erosion rate increased along with wind velocity. However, under different wind velocities, when the CaCO3 content was approximately 5%, the wind erosion intensity was lowest. The wind erosion intensity showed a smooth variation trend in response to the variations in wind velocity. (3) The relationship between wind erosion rate and CaCO3 content could be described by a quadratic function. When the CaCO3 content was approximately 5%, the wind erosion rate was relatively small. However, owing to differences in soil properties, the two types of soils exhibited different cumulative wind erosion intensities. (4) Wind erosion of the soils could be remarkably reduced by maintaining the soil CaCO3 content of around 5% and reducing the wind velocity to less than 10 m/s.