干旱区生态环境知识资源中心(Arid): The efficiency of the Standardized Evapotranspiration Deficit Index (SEDI) in assessing the impact of drought on vegetation cover

Arid

DOI	10.1007/s10661-022-09972-z
	The efficiency of the Standardized Evapotranspiration Deficit Index (SEDI) in assessing the impact of drought on vegetation cover
	Soleimani-Motlagh, Mahdi; Soleimani-Sardo, Mojtaba; Mossivand, Amir Mirzaei
通讯作者	Soleimani-Motlagh, M
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2022
卷号	194 期号:4
英文摘要	It is important to choose an indicator that can optimally demonstrate the effects of drought intensity on soil moisture access, evapotranspiration and the changes in vegetation cover at a regional scale. Therefore, herein, SEDI was developed by the fit of the experimental distribution of Gringorten on evapotranspiration deficit based on TerraClimate data at the time scales of 1, 3, 6 and 12 months, and its relationship with Standardized Precipitation-Evapotranspiration Index (SPEI), Standardized Precipitation Index (SPI), Standardized Soil Moisture Index (SSMI), Normalized Ecosystem Drought Index (NEDI) and Normalized Difference Vegetation Index (NDVI) were investigated. The results indicated that SEDI has the highest significant correlation (above 95%) with NEDI and SPEI, especially for the 1-month time scale. This index also revealed the lowest correlation (less than 25%) with SPI on short-term time scales. The relationship between SEDI and SSMI indicated the high sensitivity of SEDI to the cumulative reduction of low amounts of soil moisture. According to the findings, the 6-month SEDI with NDVI showed the highest correlation with a 1-month delay (r = 0.64) and the best fit between them occurred in wet months. However, in the dry months, the relationship between SEDI with NDVI was affected via water availability stresses, grazing intensity and pest infestation. Finally, the use of SEDI at a regional scale, especially in arid and semi-arid regions like Lorestan, could be recognized as an important index in depicting the effects of drought on vegetation cover, due to the use of the actual evapotranspiration factor.
英文关键词	Water stress Canopy cover Deforestation AET
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000773972400001
WOS关键词	RIVER-BASIN
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392469
推荐引用方式 GB/T 7714	Soleimani-Motlagh, Mahdi,Soleimani-Sardo, Mojtaba,Mossivand, Amir Mirzaei. The efficiency of the Standardized Evapotranspiration Deficit Index (SEDI) in assessing the impact of drought on vegetation cover[J],2022,194(4).
APA	Soleimani-Motlagh, Mahdi,Soleimani-Sardo, Mojtaba,&Mossivand, Amir Mirzaei.(2022).The efficiency of the Standardized Evapotranspiration Deficit Index (SEDI) in assessing the impact of drought on vegetation cover.ENVIRONMENTAL MONITORING AND ASSESSMENT,194(4).
MLA	Soleimani-Motlagh, Mahdi,et al."The efficiency of the Standardized Evapotranspiration Deficit Index (SEDI) in assessing the impact of drought on vegetation cover".ENVIRONMENTAL MONITORING AND ASSESSMENT 194.4(2022).