Impacts of climate change on groundwater recharge in Küçük Menderes River Basin in Western Turkey

Land cover and climate changes greatly influence hydrologic responses of a basin. However, the response vary from basin to basin depending on the nature and severity of the changes and basin characteristics. Moreover, the combined impacts of the changes affect hydrologic responses of a basin in an offsetting or synergistic manner. This study quantified the separate and combined impacts, and the relative contributions of land cover and climate changes on multiple hydrological regimes (i.e., surface runoff, streamflow, groundwater recharge evapotranspiration) for the Dhidhessa Subbasin. Land cover and climate change data were obtained from a recent study completed for the basin. Calibrated Soil and Water Analysis Tool (SWAT) was used to quantify the impacts. The result showed that SWAT model performed well for the Dhidhessa Subbasin in predicting the water balance components. Substantial land cover change as well as an increasing temperature and rainfall trends were reported in the river basin during the past three decades. In response to these changes, surface runoff, streamflow and actual evapotranspiration (AET) increased while groundwater recharge declined. Surface runoff was more sensitive to land cover than to climate changes whereas streamflow and AET were more sensitive to climate change than to land cover change. The combined impacts played offsetting effect on groundwater recharge and AET while inconsistent effects within study periods for other hydrologic responses. Overall, the predicted hydrologic responses will have negative impacts on agricultural production and water resources availability. Therefore, the implementation of integrated watershed management strategies such as soil and water conservation and afforestation could reverse the negative impacts.

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Climate change impacts on hydrology and water resources of Indian River basin

Current World Environment ◽

10.12944/cwe.13.1.04 ◽

2018 ◽

Vol 13 (1) ◽

pp. 32-43 ◽

Cited By ~ 3

Author(s):

Umesh Kumar Singh ◽

Balwant Kumar

Keyword(s):

Climate Change ◽

Groundwater Recharge ◽

River Basin ◽

Greenhouse Gas Emission ◽

Hydrological Cycle ◽

Indian Subcontinent ◽

Climatic Variability ◽

River Basins ◽

Extreme Weather Events ◽

Runoff Generation

Anthropogenic greenhouse gas emission is altering the global hydrological cycle due to change in rainfall pattern and rising temperature which is responsible for alteration in the physical characteristics of river basin, melting of ice, drought, flood, extreme weather events and alteration in groundwater recharge. In India, water demand for domestic, industrial and agriculture purposes have already increased many folds which are also influencing the water resource system. In addition, climate change has induced the surface temperature of the Indian subcontinent by 0.48 ºC in just last century. However, Ganges–Brahmaputra–Meghna (GBM) river basins have great importance for their exceptional hydro-geological settings and deltaic floodplain wetland ecosystems which support 700 million people in Asia. The climatic variability like alterations in precipitation and temperature over GBM river basins has been observed which signifies the GBM as one of the most vulnerable areas in the world under the potential impact of climate change. Consequently, alteration in river discharge, higher runoff generation, low groundwater recharge and melting of glaciers over GBM river basin could be observed in near future. The consequence of these changes due to climate change over GBM basin may create serious water problem for Indian sub-continents. This paper reviews the literature on the historical climate variations and how climate change affects the hydrological characteristics of different river basins.

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Integrating Strategic Environmental Assessment to Climate Change Adaption in the Chao Phraya River Basin: Case Study Flood Management Plans in Ayutthaya

Sustainability in Environment ◽

10.22158/se.v6n2p55 ◽

2021 ◽

Vol 6 (2) ◽

pp. p55

Author(s):

Wilawan Boonsri Prathaithep ◽

Vilas Nitivattananon

Keyword(s):

Climate Change ◽

River Basin ◽

Environmental Assessment ◽

Flood Risk ◽

Assessment Tool ◽

Flood Management ◽

Integrated System ◽

Strategic Environmental Assessment ◽

Human Environment ◽

Impacts Of Climate Change

Traditionally, flood management has concentrated on providing protection against floods using technical measures, but there is currently an international shift towards a more integrated system of flood risk management, whereby flood risk is defined as the probability of flooding multiplied by the potential consequences. Climate change is a great challenge to sustainable development and the Millennium Development Goals (MDGs) in Thailand. The main purpose of this paper is to highlight the challenges associated with the current situation and projected impacts of climate change on the disasters and the human environment in Thailand, to review and explore the potential of Strategic Environmental Assessment (SEA), and to propose SEA in making informed decisions relevant to the implementation of the new adaptation framework in a flood management plan. Thus, current measures on how Thailand is responding to the recent impacts of climate change in river basin planning are presented. It is imperative that an appropriate environmental assessment tool, such as SEA be employed in making rational decisions regarding adaptation frameworks. SEA offers a structured and proactive environmental tool for integrating of climate change adaption into formulating Policies, Plans, and Programs (PPPs) among relevant sectors.

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Impacts of climate change on streamflow in the upper Yangtze River basin

Climatic Change ◽

10.1007/s10584-016-1852-5 ◽

2016 ◽

Vol 141 (3) ◽

pp. 533-546 ◽

Cited By ~ 37

Author(s):

Buda Su ◽

Jinlong Huang ◽

Xiaofan Zeng ◽

Chao Gao ◽

Tong Jiang

Keyword(s):

Climate Change ◽

River Basin ◽

Yangtze River ◽

Yangtze River Basin ◽

Upper Yangtze River ◽

The Upper Yangtze River ◽

Impacts Of Climate Change

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Hydrological Impacts of Climate Change Simulated by HIMS Models in the Luanhe River Basin, North China

Water Resources Management ◽

10.1007/s11269-014-0881-y ◽

2014 ◽

Vol 29 (4) ◽

pp. 1365-1384 ◽

Cited By ~ 15

Author(s):

Yan Jiang ◽

Changming Liu ◽

Xuyong Li

Keyword(s):

Climate Change ◽

River Basin ◽

North China ◽

Luanhe River Basin ◽

Hydrological Impacts ◽

Impacts Of Climate Change

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Impacts of Climate Change on Groundwater Recharge & Discharge in Water Scarce Region: A Case Study of the Ubar/ Shisr Agricultural Region of Oman.

10.5194/egusphere-egu21-6577 ◽

2021 ◽

Author(s):

Alaba Boluwade ◽

Asma Al-Mamani ◽

Amna Alruheili ◽

Ali Al-Maktoumi

Keyword(s):

Climate Change ◽

Food Security ◽

Groundwater Recharge ◽

Irrigation System ◽

Primary Objective ◽

Coefficient Of Determination ◽

Irrigated Agriculture ◽

Agricultural Region ◽

Trade Offs ◽

Impacts Of Climate Change

&#160;*Correspondence: [email protected]Abstract: The primary objective of this study was to quantify the impacts of climate change on groundwater recharge using the 3D numerical-based HydroGeoSphere (HGS) model in the Ubar/ Shisr Agricultural region in South of Oman. This region has multi-million US dollar irrigated agriculture project purposely developed for the food security of the country. Excessive abstraction of groundwater for irrigation use (using the center pivot irrigation system) has contributed to the &#8220;drying-up&#8221; of several groundwater wells located in this area. Therefore, there is an urgent need to characterize the long-term sustainability of this agricultural project under a changing climate. HGS model was calibrated on both steady and transient states using selected monitoring wells located within the study area (approximately 980-km2). The coefficient of determination (R2) for the steady-state performance was 0.93 while the transient state performances correctly reproduced the seasonality for each monitoring well. A transient-based calibrated version of the HGS model, using 30-year historical observations (1980-2018) was termed &#8220;Reference&#8221; while model configurations were developed for the immediate climatic projection (period: 2020 &#8211; 2039) based on two Representative Concentration Pathways (RCP): - RPC4.5 and RCP8.5 extracted from the World Bank Knowledge portal. These two configured models (scenarios) were evaluated for monthly transient simulations (2020-2039). From the total hydraulic head (THH) fluctuations standpoint, there were reductions when compared with &#8220;Reference&#8221; for all the scenarios with up to 20% THH reductions for groundwater well levels under persistent seasonal agricultural activities. This study is very important in quantifying the trade-offs and synergies involved between sustainable water management and food security initiatives, especially for an arid climate.Keywords: groundwater recharge; climate change, hydrogeologic modeling; Sultanate of Oman

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