干旱区生态环境知识资源中心(Arid): Spatial Scale Effects of the Relationship between Fractional Vegetation Coverage and Land Surface Temperature in Horqin Sandy Land, North China

Arid

DOI	10.3390/s21206914
	Spatial Scale Effects of the Relationship between Fractional Vegetation Coverage and Land Surface Temperature in Horqin Sandy Land, North China
	Qiao, Rongrong; Dong, Chunyuan; Ji, Shuxin; Chang, Xueli
通讯作者	Chang, XL (corresponding author)，Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China.
来源期刊	SENSORS
EISSN	1424-8220
出版年	2021
卷号	21 期号:20
英文摘要	Sandy range land refers to a major component of grassland area types in the semi-arid area of northern China. Monitoring of vegetation and land surface temperature (LST) using remote sensing technology can help determine the degree of desertification in a regional and/or sub regional scale, as in the Horqin Sandy Land selected in this study. Correlation analysis was performed to examine the relationship between the fractional vegetation coverage (FVC) and the LST within one growing season (from May to August 2017), at different spatial scales. The results showed that the FVC increased from 0.12 in May to 0.29 in August, and the LST increased first and then declined. The highest LST was 41.68 degrees C in July, while the lowest was 28.62 degrees C in August. At the grid scale, the LST increased first and then declined with the increase of the FVC on 25 May, 10 June, and 29 August; the FVC ranged from 0.29-0.38, 0.27-0.32, and 0.29-0.38 with the preference of the `turning point', respectively. A negative correlation was identified between the FVC and the LST and without any `turning point' in the fitting curve on 28 July. The correlation between FVC and LST complied with the grid scale at the sample area scale. The coupling analysis of landscape pattern expressed by FVC and LST showed that, the landscape evenness, Euclidean nearest neighbor distance, and landscape splitting degree all showed strong coupling correlation in any study period (P). The landscape aggregation of FVC and LST showed a good coupling at the relatively high and low air temperature conditions of P1 and P3. Landscape contagion showed a good coupling between FVC and LST at relatively moderate air temperature condition of P1 and P4. Air temperature conditions and characteristics of vegetation coverage should be considered for a more targeted analysis when analyzing the relationship between FVC and LST and attention should be paid to the timing and type of study area in practical application.
英文关键词	fractional vegetation cover land surface temperature landscape pattern metrics thermal infrared meteorology correlation analysis Horqin
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000746844000001
WOS关键词	SPLIT-WINDOW ALGORITHM ; DESERTIFICATION ; RETRIEVAL ; IMPACT
WOS类目	Chemistry, Analytical ; Engineering, Electrical & Electronic ; Instruments & Instrumentation
WOS研究方向	Chemistry ; Engineering ; Instruments & Instrumentation
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/375903
作者单位	[Qiao, Rongrong; Dong, Chunyuan; Ji, Shuxin; Chang, Xueli] Ludong Univ, Sch Resources & Environm Engn, Yantai 264025, Peoples R China
推荐引用方式 GB/T 7714	Qiao, Rongrong,Dong, Chunyuan,Ji, Shuxin,et al. Spatial Scale Effects of the Relationship between Fractional Vegetation Coverage and Land Surface Temperature in Horqin Sandy Land, North China[J],2021,21(20).
APA	Qiao, Rongrong,Dong, Chunyuan,Ji, Shuxin,&Chang, Xueli.(2021).Spatial Scale Effects of the Relationship between Fractional Vegetation Coverage and Land Surface Temperature in Horqin Sandy Land, North China.SENSORS,21(20).
MLA	Qiao, Rongrong,et al."Spatial Scale Effects of the Relationship between Fractional Vegetation Coverage and Land Surface Temperature in Horqin Sandy Land, North China".SENSORS 21.20(2021).