DOI: 10.1016/j.jhydrol.2019.124426
论文题名: Assessing climate changes impacts on tropical karst catchment: Implications on groundwater resource sustainability and management strategies
作者: Klaas D.K.S.Y. ; Imteaz M.A. ; Sudiayem I. ; Klaas E.M.E. ; Klaas E.C.M.
刊名: Journal of Hydrology
ISSN: 221694
出版年: 2020
卷: 582 语种: 英语
英文关键词: Climate change
; Groundwater
; Indonesia
; Management strategies
; Sustainability
; Tropical karst island
Scopus关键词: Catchments
; Climate models
; Drought
; Groundwater
; Groundwater flow
; Groundwater resources
; Landforms
; Plants (botany)
; Recharging (underground waters)
; Runoff
; Sustainable development
; Tropics
; Calibration and validations
; Climate change scenarios
; Indonesia
; Irrigation requirements
; Management strategies
; Resource sustainability
; Statistical downscaling model (SDSM)
; Tropical karst island
; Climate change
; catchment
; climate change
; climate modeling
; discharge
; global climate
; groundwater resource
; karst hydrology
; natural resource
; sustainability
; water demand
; watershed
; East Nusa Tenggara
; Indonesia
; Rote
英文摘要: Developing tailored management strategies to ensure the sustainability of groundwater resource under climatic and demographic changes is critical for tropical karst catchment, where relatively small watershed and highly porous soil make this natural resource highly susceptible and thus very sensitive to those changes. In this study, long term impacts of climate variability on groundwater recharge and discharge at Oemau spring, Rote Island, Indonesia were selected and investigated. Following calibration and validation of groundwater model using MODFLOW code, groundwater flow was simulated for the period of 2020–2090 under HadCM3 global climate model (GCM) scenarios, using input data of weather variables downscaled by Statistical Downscaling Model (SDSM). The reported analysis suggests that the sustainability of groundwater resources, which was evaluated by assessing the ability of the spring to supply water demand from irrigation requirement and domestic consumption, generally varies over the period and will be adversely affected by climate change during dry periods when the area is projected to variably experience supply shortage of around 29–67 L/s as a result of 5.24–23.63% decrease of rainfall, 2.48–24.57% reduction of recharge, and 2.53–22.80% decrease of spring discharge, under HadCM3 GCM scenarios. A subsequent comprehensive set of management strategies as palliative and adaptive efforts was proposed to be implemented by relevant stakeholders to assist the community dealing with water deficit during the dry periods. Three main adaptive strategies, namely socio-cultural, technical, and ecological measures, were proposed by incorporating physical and socio-economic characteristics of the area. This study presents a blueprint for assessing groundwater sustainability under climate change scenarios and developing tailored management strategies to cope with adverse impacts of climate change, which may become fundamental guidelines across other karst islands in the future. © 2019 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158793
Appears in Collections: 气候变化与战略
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作者单位: Department of Civil & Construction Engineering, Swinburne University of Technology, Melbourne, VIC, Australia; Department of Civil Engineering, Politeknik Negeri Kupang University of Applied Sciences, Kupang, Indonesia; Department of Health, Science and Technology, Klinik Garuda, Malang, Indonesia
Recommended Citation:
Klaas D.K.S.Y.,Imteaz M.A.,Sudiayem I.,et al. Assessing climate changes impacts on tropical karst catchment: Implications on groundwater resource sustainability and management strategies[J]. Journal of Hydrology,2020-01-01,582