期刊
HYDROLOGICAL SCIENCES JOURNAL
卷 68, 期 6, 页码 840-855出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/02626667.2023.2171797
关键词
groundwater; anthropogenic; hydro-climatic variables; climate change; vegetation cover
This research investigates an aquifer experiencing severe groundwater stress, aiming to identify the main causes and understand the impacts of climate change and human activities. The results indicate that declining groundwater levels are mainly caused by expanding vegetation cover rather than changing hydro-climatic variables.
Groundwater resources are the most reliable freshwater supply in arid regions where many aquifers face dramatic depletion due to natural and anthropogenic causes. The annual average rate of decline of groundwater level is about 1.65 m. This research focuses on an aquifer that suffers from severe groundwater stress, and it aims to identify the main causes of the stress and to understand the effects of climate change and human activity. Monthly data on groundwater level, precipitation, temperature, river discharge, evapotranspiration, soil moisture, and vegetation cover were collected from 2000 to 2020. The results indicate that declining groundwater levels mainly resulted from the expansion of vegetation cover rather than changes in hydro-climatic variables. Finally, this work highlights how significant financial investment in improving irrigation efficiency in the absence of socio-economic plans, education, awareness, and monitoring programmes unproductively resulted in the expansion of agricultural activities rather than preserving groundwater storage.
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