期刊
JOURNAL OF IRRIGATION AND DRAINAGE ENGINEERING
卷 148, 期 10, 页码 -出版社
ASCE-AMER SOC CIVIL ENGINEERS
DOI: 10.1061/(ASCE)IR.1943-4774.0001702
关键词
Hydrochemicals; Climate change; Water resources; HYDRUS-1D; Ngorongoro Conservation Arca (NCA)
资金
- World Bank
- Department of Science and Technology India
- African Center of Excellence for Water Management Programme through the Water, Infrastructure and Sustainable Energy Futures (WISE-Futures) Centre of the Nelson Mandela African Institution of Science and Technology, Arusha, Tanzania
This study used the HYDRUS-1D model to assess the groundwater quality changes in the Ngorongoro Conservation Area due to climate variability. It found that the current groundwater is suitable for drinking and domestic purposes, but some indicators are predicted to exceed the limits in the future.
Understanding the hydrochemical composition of water resources in the Ngorongoro Conservation Area (NCA, Dodoma, Tanzania) related to climate variability is essential for sustainable development. Thus, the current study used the HYDRUS-1D model to assess the groundwater quality change due to the leaching of hydrochemicals from surface water under the climate variability of the NCA. This study observed that the area's surface water had varying hydrochemical contaminants, whereas the groundwater is currently most suitable for drinking and domestic purposes. However, it is predicted that two anions (Cl-1 and PO4(-3)) and two cations (Na+ and K+) are expected to exceed the permissible limits from 2036 to 2050, considering the anticipated climatic conditions. Changes in groundwater quality for cations and anions are significantly correlated to evapotranspiration and temperature, with Pearson's coefficient of determinations r between 0.35 and 0.66. The findings of this study are necessary to benchmark better water resources management planning. (C) 2022 American Society of Civil Engineers.
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