干旱区生态环境知识资源中心(Arid): The Impact of Dam Construction on Downstream Vegetation Area in Dry Areas Using Satellite Remote Sensing: A Case Study

Arid

DOI	10.3390/rs15215252
	The Impact of Dam Construction on Downstream Vegetation Area in Dry Areas Using Satellite Remote Sensing: A Case Study
	Almalki, Raid; Khaki, Mehdi; Saco, Patricia M.; Rodriguez, Jose F.
通讯作者	Khaki, M
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:21
英文摘要	The assessment of ecosystem quality and the maintenance of optimal ecosystem function require understanding vegetation area dynamics and their relationship with climate variables. This study aims to detect vegetation area changes downstream of the Hali dam, which was built in 2009, and to understand the influence of the dam as well as climatic variables on the region's vegetation areas from 2000 to 2020. The case study is located in an arid area with an average rainfall amount from 50 to 100 mm/year. An analysis of seasonal changes in vegetation areas was conducted using the Normalized Difference Vegetation Index (NDVI), and supervised image classification was used to evaluate changes in vegetation areas using Landsat imagery. Pearson correlation and multivariate linear regression were used to assess the response of local vegetation areas to both hydrologic changes due to dam construction and climate variability. The NDVI analysis revealed a considerable vegetation decline after the dam construction in the dry season. This is primarily associated with the impoundment of seasonal water by the dam and the increase in cropland areas due to dam irrigation. A significantly stronger correlation between vegetation changes and precipitation and temperature variations was observed before the dam construction. Furthermore, multivariant linear regression was used to evaluate the variations in equivalent water thickness (EWT), climate data, and NDVI before and after the dam construction. The results suggested that 85 percent of the variability in the mean NDVI was driven by climate variables and EWT before the dam construction. On the other hand, it was found that only 42 percent of the variations in the NDVI were driven by climate variables and EWT from 2010 to 2020 for both dry and wet seasons.
英文关键词	vegetation areas dam impacts downstream vegetation climate variability arid regions
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:001121080700001
WOS关键词	CLIMATE-CHANGE ; SOIL-MOISTURE ; COVER CHANGE ; SAUDI-ARABIA ; NDVI ; PRECIPITATION ; DROUGHT ; PLATEAU ; WATER ; GIS
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/398336
推荐引用方式 GB/T 7714	Almalki, Raid,Khaki, Mehdi,Saco, Patricia M.,et al. The Impact of Dam Construction on Downstream Vegetation Area in Dry Areas Using Satellite Remote Sensing: A Case Study[J],2023,15(21).
APA	Almalki, Raid,Khaki, Mehdi,Saco, Patricia M.,&Rodriguez, Jose F..(2023).The Impact of Dam Construction on Downstream Vegetation Area in Dry Areas Using Satellite Remote Sensing: A Case Study.REMOTE SENSING,15(21).
MLA	Almalki, Raid,et al."The Impact of Dam Construction on Downstream Vegetation Area in Dry Areas Using Satellite Remote Sensing: A Case Study".REMOTE SENSING 15.21(2023).