干旱区生态环境知识资源中心(Arid): Spatial Distribution and Variation Characteristics of Permafrost Temperature in Northeast China

Arid

DOI	10.3390/su14138178
	Spatial Distribution and Variation Characteristics of Permafrost Temperature in Northeast China
	Shan, Wei; Zhang, Chengcheng; Guo, Ying; Qiu, Lisha; Xu, Zhichao; Wang, Yan
通讯作者	Shan, W
来源期刊	SUSTAINABILITY
EISSN	2071-1050
出版年	2022
卷号	14 期号:13
英文摘要	Frozen soil is an important environmental factor in cold regions. Warming climate will increase the risk of permafrost thawing, i.e., accelerated carbon release, reduced super-frozen soil water, intensified desertification and destruction of infrastructure. Based on MOD11A2 and MYD11A2 products of MODIS Terra/Aqua, the distribution and change of surface frost number under the influence of normalized difference vegetation index and forest canopy closure in Northeast China from 2003 to 2019 were produced. From 2012 to 2015, the area of the regions where the surface frost number was higher than 0.5 continued to decrease in Northeast China. Taking 2013 as the time turning point, two periods of changes in the distribution of surface frost number in Northeast China were divided, namely, into 2003-2013 and 2014-2014. The spatial distribution of permafrost temperature is simulated by establishing the numerical relationship between the surface frost number and the annual average ground temperature of permafrost. From 2003 to 2019, the area of permafrost changed from 32.77 x 10(4) to 27.10 x 10(4) km(2). The distribution characteristics show that the area with permafrost temperature below -4 degrees C accounts for 0.1%, and below -3.0 degrees C accounts for 3.45%. The permafrost with lower temperature is mainly distributed in the Greater Khingan Mountains, from the northernmost Mohe to the Aershan in the middle of the ridge. The area where the permafrost temperature ranges from -2 to 0 degrees C is the largest, accounting for 73.81% of the total area. The distribution of permafrost temperatures in the Greater Khingan Mountains is mainly between -1.5 and -3 degrees C, while that in the Lesser Khingan Mountains is mainly between -2.0 and 0 degrees C. The altitude is the main factor controlling the permafrost temperature distributed at high latitudes in Northeast China. This work will provide more detailed basic data for regional research on frozen soil and the environment in Northeast China.
英文关键词	Northeast China permafrost temperature surface frost number normalized difference vegetation index
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E ; SSCI
WOS记录号	WOS:000823906800001
WOS关键词	MOUNTAIN PERMAFROST ; TIBETAN PLATEAU ; CLIMATE-CHANGE ; MAP ; MODEL
WOS类目	Green & Sustainable Science & Technology ; Environmental Sciences ; Environmental Studies
WOS研究方向	Science & Technology - Other Topics ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394606
推荐引用方式 GB/T 7714	Shan, Wei,Zhang, Chengcheng,Guo, Ying,et al. Spatial Distribution and Variation Characteristics of Permafrost Temperature in Northeast China[J],2022,14(13).
APA	Shan, Wei,Zhang, Chengcheng,Guo, Ying,Qiu, Lisha,Xu, Zhichao,&Wang, Yan.(2022).Spatial Distribution and Variation Characteristics of Permafrost Temperature in Northeast China.SUSTAINABILITY,14(13).
MLA	Shan, Wei,et al."Spatial Distribution and Variation Characteristics of Permafrost Temperature in Northeast China".SUSTAINABILITY 14.13(2022).