Climate and land-use change impacts on spatiotemporal variations in groundwater recharge: A case study of the Bangkok Area, Thailand

Ghimire, Usha; Shrestha, Sangam; Neupane, Sanjiv; Mohanasundaram, S.; Lorphensri, Oranuj

doi:10.1016/j.scitotenv.2021.148370

Cited by 48 publications

(24 citation statements)

References 25 publications

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“…The temperature rise under SSP5-8.5 is significantly larger than that under SSP2-4.5 and SSP1-2.6 due to the higher radiative forcing level of SSP5-8.5 (Ba et al 2018). In addition, the rising rate of annual Tmin is envisaged to be higher than that of annual Tmax, which is similar to the finding of Ghimire et al (2021) in Bangkok. This may be attributed to the fact that the sensitivity of Tmin to a rise in GHG concentration is higher than that of Tmax (Salawitch 1998).…”

Section: Discussionsupporting

confidence: 74%

“…CC directly affects both surface water and groundwater resources, but estimating the influence on groundwater resources shows a considerable challenge. Since groundwater is a vital source of freshwater for both human uses and ecosystem, the GWR is considered as one of the key hydrological factors for estimating the surface and subsurface water balance (Ghimire et al 2021). According to Amanambu et al (2020), groundwater accounts for approximately 96% of the unfrozen freshwater and 33% of global water withdrawals.…”

Section: Introductionmentioning

confidence: 99%

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Impact of future climate change on river discharge and groundwater recharge: a case study of Ho Chi Minh City, Vietnam

Khôi

Sam

Thao

et al. 2022

Journal of Water and Climate Change

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Climate change (CC) is likely to have a long-term influence on regional water resources, including surface water and groundwater. Therefore, quantifying the CC influence is indispensable for proper management of water resources. This study scrutinized the influence of CC on river discharge and groundwater recharge (GWR) in Ho Chi Minh City (HCMC), Vietnam, utilizing the Soil and Water Assessment Tool (SWAT). The calibrated SWAT was utilized to simulate the discharge and GWR under projected climate scenarios in reliance on an ensemble of seven General Circulation Models (GCMs) derived from Coupled Model Intercomparison Project Phase 6 (CMIP6) under three Shared Socioeconomic Pathways (SSPs), including SSP1-2.6, SSP2-4.5, and SSP5-8.5. Results pointed out that the climate of HCMC is warmer and wetter in the 21st century. Under the CC influence, the future discharge is envisaged to rise from 0.1 to 4.5% during the near-future period of 2030s (2021–2045), 8.1 to 11.6% during the mid-future period of 2055s (2046–2070), and 7.7 to 19.6% during the far-future period of 2080s (2071–2095) under the three SSP scenarios. In addition, the GWR is prognosticated to have rising trends of 0.9–4.9%, 5.3–7.9%, and 5.7– 13.5% during the near-future, mid-future, and far-future periods, respectively. Furthermore, uncertainties in the discharge and GWR projections connected with SSP scenarios and CMIP6 GCMs are considerable.

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Section: Discussionsupporting

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Impact of future climate change on river discharge and groundwater recharge: a case study of Ho Chi Minh City, Vietnam

Khôi

Sam

Thao

et al. 2022

Journal of Water and Climate Change

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“…Groundwater is influenced by natural and non-natural factors [6], such as land use/cover, rainfall, recharge, geology, soil type, evaporation, and abstraction [7]. With the increased demand for water fuelled by an increase in the population, an increase in abstraction rates has been witnessed, causing a decline in groundwater levels [8,9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Recharge and Abstraction on Groundwater Levels

2022

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Groundwater constitutes 99% of all liquid freshwater globally that is available for human use. Groundwater levels in the Nairobi aquifer system (NAS) have been declining over time because of excessive abstraction fueled by increased water demand. This has increased the cost of pumping and drilling boreholes, which is unsustainable. The objective of this study is to determine the effect of recharge and abstraction on groundwater levels using a more realistic approach by estimating recharge using the SWAT model while considering climatic data, soil type, land use/cover, and topography. Recharge obtained from SWAT was applied in MODFLOW to model the groundwater system. Results showed that the average annual recharge was 73 mm, which is about 9.7% of the precipitation. Groundwater levels decreased with an increase in abstraction and a decrease in recharge and vice versa. Groundwater levels will decrease by 76 m by the year 2063 if the abstraction rate is kept constant and the recharge is maintained, and will decrease by 14m by the year 2030 if the trend of abstraction rate continues to increase while recharge is kept constant. The abstraction rate should be regulated according to available recharge and recharge enhanced to avoid possible depletion of groundwater. Doi: 10.28991/CEJ-2022-08-05-05 Full Text: PDF

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“…Moreover, some studies revealed that the order of PM2.5 concentration for the different land use and land cover types is construction lands> unused land> water> farmlands> grasslands> woodlands and, when high-grade land types are converted to low-grade types, the PM2.5 concentration decreases; otherwise, the PM2.5 increases [21]. In addition, LULCC contributes to the availability of water resources by changing the water balance in the area [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Spatial and Temporal Changes of Ecosystem Service Value in Airport Economic Zones in China

Niu

Xie

Xiao

et al. 2021

Land

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With the rapid development of the aviation industry, many negative effects on the local environment have been reported. This study examined the land use and land cover (LULC) and ecosystem service value (ESV) of airport economic zones (AEZs) in China and assessed the changes in LULC and ESV. The results indicate that LULC changed significantly from 1990 to 2015, characterized by the increase in construction land (increase rate, 68.53%) and water bodies (increase rate, 2.32%) and the decrease in cropland (decrease rate, 4.28%), forest (decrease rate, 0.73%), grassland (decrease rate, 4.64%) and unused land (decrease rate, 6.36%). The ESV of AEZs in 1990 and 2015 was RMB 3454 and 3483 million, respectively, with an overall ESV change of RMB 29 million. The ESV of AEZs is characterized by high value in the coastal area of China. From 1990 to 2015, AEZs with a high ESV were located in Inner Mongolia, while those with a high decrease in ESV were located in the southeastern coastal area. From 1990 to 2000, the AEZs with a high increase in ESV were located in Inner Mongolia and Qinghai and the AEZs with decreased ESV were mostly located in central and south China. However, from 2000 to 2010, AEZs with high and low increases in ESV were located in central China and the south coastal area of China, respectively. From 2010 to 2015, AEZs with a high decrease in ESV were located in southeast China.

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Climate and land-use change impacts on spatiotemporal variations in groundwater recharge: A case study of the Bangkok Area, Thailand

Cited by 48 publications

References 25 publications

Impact of future climate change on river discharge and groundwater recharge: a case study of Ho Chi Minh City, Vietnam

Impact of future climate change on river discharge and groundwater recharge: a case study of Ho Chi Minh City, Vietnam

Effect of Recharge and Abstraction on Groundwater Levels

Spatial and Temporal Changes of Ecosystem Service Value in Airport Economic Zones in China

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