干旱区生态环境知识资源中心(Arid): Dynamics of blowouts indicating the process of grassland desertification

Arid

DOI	10.1002/ldr.4362
	Dynamics of blowouts indicating the process of grassland desertification
	Zhou, Yanguang; Hasi, Eerdun; Wang, Zhuoran; Qing, Damuni; Han, Xujiao; Yin, Jie; Wu, Zifeng
通讯作者	Hasi, E
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2022
卷号	33 期号:15 页码:2885-2897
英文摘要	Sand desertification is a serious ecological and environmental problem in semiarid grassland areas; thus an accurate understanding of its causes and process mechanisms is of significance for grassland desertification control. With the popularization of remote sensing monitoring technology, most research has focused on analyzing the trends of grassland sand patches and their impact on regional desertification, whereas fewer studies have explored the mechanisms of grassland desertification development. This study analyzed the dynamic changes in grassland landscape in the Hulun Buir grassland of China via multiperiod high-resolution remote sensing images from 1959 to 2020, and examined the morphological changes, erosion patterns, grain size characteristics and sediment compaction of two trough blowouts. Our study noted that under climate change and human activities, grassland desertification is becoming increasingly serious, and its main manifestation is the occurrence and expansion of blowouts. Changes in blowout morphologies indicate that the area of the deflation basin shows a state of continuous growth, whereas the area of the depositional lobe shows fluctuating changes, which could mean that the deflation basin may be a useful indicator of desertification. Based on a detailed analysis of both climate and grassland changes, we believe that human activities determine the occurrence of blowouts, and climatic conditions determine the expansion of blowouts and the desertification degree. The morphological changes of blowouts are related to the removal mode and erosion resistance of the grassland soil, and the rate of removal of the soil limits the rate of blowout expansion.
英文关键词	blowout deflation basin desertification grassland morphology change
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000823278200001
WOS关键词	3-DIMENSIONAL AIR-FLOW ; BOWL BLOWOUT ; PATTERNS ; CHINA ; DUNES
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393722
推荐引用方式 GB/T 7714	Zhou, Yanguang,Hasi, Eerdun,Wang, Zhuoran,et al. Dynamics of blowouts indicating the process of grassland desertification[J],2022,33(15):2885-2897.
APA	Zhou, Yanguang.,Hasi, Eerdun.,Wang, Zhuoran.,Qing, Damuni.,Han, Xujiao.,...&Wu, Zifeng.(2022).Dynamics of blowouts indicating the process of grassland desertification.LAND DEGRADATION & DEVELOPMENT,33(15),2885-2897.
MLA	Zhou, Yanguang,et al."Dynamics of blowouts indicating the process of grassland desertification".LAND DEGRADATION & DEVELOPMENT 33.15(2022):2885-2897.