干旱区生态环境知识资源中心(Arid): Interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe,Inner Mongolia of China

Arid

	Interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe,Inner Mongolia of China
	Meng Zhongju; Dang Xiaohong; Gao Yong; Ren Xiaomeng; Ding Yanlong; Wang Meng
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2018
卷号	10 期号:4 页码:534-547
英文摘要	The rapid desertification of grasslands in Inner Mongolia of China poses a significant ecological threaten to northern China.The combined effects of anthropogenic disturbances(e.g.,overgrazing) and biophysical processes(e.g.,soil erosion) have led to vegetation degradation and the consequent acceleration of regional desertification.Thus,mitigating the accelerated wind erosion,a cause and effect of grassland desertification,is critical for the sustainable management of grasslands.Here,a combination of mobile wind tunnel experiments and wind erosion model was used to explore the effects of different levels of vegetation coverage,soil moisture and wind speed on wind erosion at different positions of a slope inside an enclosed desert steppe in the Xilamuren grassland of Inner Mongolia.The results indicated a significant spatial difference in wind erosion intensities depending on the vegetation coverage,with a strong decreasing trend from the top to the base of the slope.Increasing vegetation coverage resulted in a rapid decrease in wind erosion as explained by a power function correlation.Vegetation coverage was found to be a dominant control on wind erosion by increasing the surface roughness and by lowering the threshold wind velocity for erosion.The critical vegetation coverage required for effectively controlling wind erosion was found to be higher than 60%.Further,the wind erosion rates were negatively correlated with surface soil moisture and the mass flux in aeolian sand transport increased with increasing wind speed.We developed a mathematical model of wind erosion based on the results of an orthogonal array design.The results from the model simulation indicated that the standardized regression coefficients of the main effects of the three factors(vegetation coverage,soil moisture and wind speed) on the mass flux in aeolian sand transport were in the following order:wind speed>vegetation coverage>soil moisture.These three factors had different levels of interactive effects on the mass flux in aeolian sand transport.Our results will improve the understanding of the interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in desert steppes,and will be helpful for the design of desertification control programs in future.
英文关键词	desert steppe wind erosion desertification aeolian process sand transport Xilamuren grassland
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Agriculture
CSCD记录号	CSCD:6283196
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335976
作者单位	Meng Zhongju, Desert Control Science and Engineering College,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.; Dang Xiaohong, Desert Control Science and Engineering College,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.; Gao Yong, Desert Control Science and Engineering College,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.; Ding Yanlong, Desert Control Science and Engineering College,Inner Mongolia Agricultural University, Hohhot, Inner Mongolia 010018, China.; Ren Xiaomeng, Inner Mongolia Institute of Meteorological Science, Hohhot, Inner Mongolia 010051, China.; Wang Meng, Forestry College,Beijing Forestry University, Beijing 100083, China.
推荐引用方式 GB/T 7714	Meng Zhongju,Dang Xiaohong,Gao Yong,et al. Interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe,Inner Mongolia of China[J],2018,10(4):534-547.
APA	Meng Zhongju,Dang Xiaohong,Gao Yong,Ren Xiaomeng,Ding Yanlong,&Wang Meng.(2018).Interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe,Inner Mongolia of China.Journal of Arid Land,10(4),534-547.
MLA	Meng Zhongju,et al."Interactive effects of wind speed,vegetation coverage and soil moisture in controlling wind erosion in a temperate desert steppe,Inner Mongolia of China".Journal of Arid Land 10.4(2018):534-547.