干旱区生态环境知识资源中心(Arid): Regional assessment for the occurrence probability of wind erosion based on the joint probability density function of air density and wind speed

Arid

DOI	10.1016/j.catena.2024.108213
	Regional assessment for the occurrence probability of wind erosion based on the joint probability density function of air density and wind speed
	Liang, Yushi; Shen, Yaping; Zhang, Zeyu; Ji, Xiaodong; Zhang, Mulan; Li, Yiran; Wang, Yu; Xue, Xinyue
通讯作者	Ji, XD
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2024
卷号	243
英文摘要	The importance of air density variations in aeolian sand movement investigations is currently attracting widespread consideration. For this purpose, the spatial distribution characteristics of threshold wind velocity under the influence of air density are determined. To better understand the occurrence conditions of wind erosion events at different spatiotemporal scales, the present paper regards the air density metric as a bridge linking wind speed distribution and threshold wind velocity, reveals the coupling relationship between air density and wind speed by introducing the statistical distribution function method of probabilistic statistical thoughts, and accomplishes the scaling up of wind speed distribution parameters according to the random forest algorithm, achieving a comprehensive evaluation of the regional overall level of wind erosion events. The results demonstrate that the mean threshold wind velocity value in the study area is 4.29 m/s, displaying a decreasing pattern with higher values in the west and lower values in the east. The mean occurrence probability of the wind erosion value is 7.92 %, with regions exceeding 12 % basically located in the central and eastern parts of the Hunshandake Sandy Land, which means that the total annual cumulative time of wind erosion in these areas is expected to approach 1.5 months. This study can contribute to the development of a systematic assessment framework of wind erosion potential risks at the regional scale. It will provide crucial information and new insights for wind erosion process research, thereby offering a theoretical basis and technical reference for a full understanding of land desertification evolution patterns.
英文关键词	Air density Threshold wind velocity Joint probability density function Random forest model Occurrence probability of wind erosion Land desertification
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001263203400001
WOS关键词	THRESHOLD FRICTION VELOCITY ; SANDY LAND AREA ; DUST EMISSION ; AEOLIAN TRANSPORT ; SIZE CHARACTERISTICS ; ENERGY ASSESSMENT ; SOIL-MOISTURE ; CHINA ; DESERTIFICATION ; DISTRIBUTIONS
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403166
推荐引用方式 GB/T 7714	Liang, Yushi,Shen, Yaping,Zhang, Zeyu,et al. Regional assessment for the occurrence probability of wind erosion based on the joint probability density function of air density and wind speed[J],2024,243.
APA	Liang, Yushi.,Shen, Yaping.,Zhang, Zeyu.,Ji, Xiaodong.,Zhang, Mulan.,...&Xue, Xinyue.(2024).Regional assessment for the occurrence probability of wind erosion based on the joint probability density function of air density and wind speed.CATENA,243.
MLA	Liang, Yushi,et al."Regional assessment for the occurrence probability of wind erosion based on the joint probability density function of air density and wind speed".CATENA 243(2024).