干旱区生态环境知识资源中心(Arid): Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin

Arid

DOI	10.3390/rs15184638
	Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin
	Wang, Ranran; Zayit, Abudoukeremujiang; He, Xuemin; Han, Dongyang; Yang, Guang; Lv, Guanghui
通讯作者	He, XM
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2023
卷号	15 期号:18
英文摘要	Desert oases are vital for maintaining the ecological balance in arid regions' inland river basins. However, fine-grained assessments of water stress in desert oasis ecosystems are limited. In our study, we aimed to evaluate the water stress in desert oasis ecosystems in the middle reaches of the Keriya River Basin, with a specific focus on their ecological functions and optimizing water resource management. We hypothesized that evapotranspiration has significant effects on ecological water consumption. First, we estimated the actual evapotranspiration (ET) and potential evapotranspiration (PET) based on the SEBS (surface energy balance system) model and remote sensing downscaling model. Then, the ecological water requirement (EWR) and ecological water stress (EWS) index were constructed to evaluate the ecological water resource utilization. Finally, we explored the influencing factors and proposed coping strategies. It was found that regions with higher ET values were mainly concentrated along the Keriya River and its adjacent farmland areas, while the lower values were observed in bare land or grassland areas. The total EWR exhibited the sequence of grassland > cropland > forest, while the EWR per unit area followed the opposite order. The grassland's EWS showed a distinct seasonal response, with severe, moderate, and mild water shortages and water plenitude corresponding to spring, summer, autumn, and winter, respectively. In contrast, the land use types with the lowest EWS were water areas that remained in a state of water plentitude grade (0.08-0.20) throughout the year. Temperature and vegetation index were identified as the primary influencing factors. Overall, this study provides a reliable method for evaluating the EWR and EWS values of basin scale vegetation, which can serve as a scientific basis for formulating water resource management and regulation policies in the region.
英文关键词	evapotranspiration SEBS ecological water requirement water stress desert oases
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:001073913800001
WOS关键词	CLIMATE-CHANGE ; HEIHE RIVER ; ARID REGION ; EVAPOTRANSPIRATION ; CHINA ; AREA ; CONSERVATION ; SCALE
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/2XILL650/398318
推荐引用方式 GB/T 7714	Wang, Ranran,Zayit, Abudoukeremujiang,He, Xuemin,et al. Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin[J],2023,15(18).
APA	Wang, Ranran,Zayit, Abudoukeremujiang,He, Xuemin,Han, Dongyang,Yang, Guang,&Lv, Guanghui.(2023).Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin.REMOTE SENSING,15(18).
MLA	Wang, Ranran,et al."Ecological Water Requirement of Vegetation and Water Stress Assessment in the Middle Reaches of the Keriya River Basin".REMOTE SENSING 15.18(2023).