干旱区生态环境知识资源中心(Arid): Desertification Caused by Embankment Construction in Permafrost Environment on the Qinghai-Tibetan Plateau

Arid

DOI	10.1007/s13369-022-06988-y
	Desertification Caused by Embankment Construction in Permafrost Environment on the Qinghai-Tibetan Plateau
	Lan, Tianli; Luo, Xiaoxiao; Ma, Qinguo; Jiang, Wangtao; Xia, Huxi
通讯作者	Ma, QG
来源期刊	ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
ISSN	2193-567X
EISSN	2191-4281
出版年	2023
卷号	48 期号:1 页码:583-599
英文摘要	Desertification is a process of land degradation embodied in soil water reduction, soil deterioration and vegetation degradation. As an important factor to evaluate the desertification degree, the water content of shallow soil will infiltrate downward when permafrost degrades on the Qinghai-Tibet Plateau (QTP). With the development of transportation facilities on the QTP, embankment construction, which will directly change the surface cover and reduces the water content of shallow soil by degrading the permafrost. In this study, an embankment construction in the permafrost region of the QTP was selected and a hydro-thermo-vapor coupling model for the embankment-permafrost system was established. The mechanism and process of desertification caused by permafrost degradation were analyzed by the variations of geotemperature and soil water. The results show that: (1) embankment construction has increased the heat flowing into the ground, warmed the underlying permafrost and deepened the permafrost table by more than 10 m during 50 years. (2) Accompanied with the permafrost degradation, the shallow soil water migrates downward and accumulates near the deepening permafrost table, showing a funnel-shaped distribution. The average water content of shallow soil under the changed surface has decreased by 5-6% during 50 years, indicating the intensification of desertification. (3) Desertification and permafrost degradation on the QTP is interconnected by the redistribution of soil water. Desertification and permafrost degradation are the mutual promotion process on the QTP.
英文关键词	Permafrost degradation Desertification Embankment construction Hydro-thermal characteristic
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000819699100001
WOS关键词	ALPINE MEADOW ; AEOLIAN DESERTIFICATION ; FORMATION MECHANISM ; RELATIVE ROLES ; SOIL-MOISTURE ; DEGRADATION ; CLIMATE ; VEGETATION ; GRASSLAND ; REGION
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395417
推荐引用方式 GB/T 7714	Lan, Tianli,Luo, Xiaoxiao,Ma, Qinguo,et al. Desertification Caused by Embankment Construction in Permafrost Environment on the Qinghai-Tibetan Plateau[J],2023,48(1):583-599.
APA	Lan, Tianli,Luo, Xiaoxiao,Ma, Qinguo,Jiang, Wangtao,&Xia, Huxi.(2023).Desertification Caused by Embankment Construction in Permafrost Environment on the Qinghai-Tibetan Plateau.ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING,48(1),583-599.
MLA	Lan, Tianli,et al."Desertification Caused by Embankment Construction in Permafrost Environment on the Qinghai-Tibetan Plateau".ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 48.1(2023):583-599.