Integrated assessment of the climate and landuse change impact on hydrology and water quality in the Songkhram River Basin, Thailand

Shrestha, Sangam; Bhatta, Binod; Shrestha, Manish; Shrestha, Pallav Kumar

doi:10.1016/j.scitotenv.2018.06.306

Cited by 184 publications

(87 citation statements)

References 27 publications

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“…There are 12 studies out of the 126 reviewed articles (Table 1) that reported applications of combined climate change and land use change impacts on SEA watersheds. These studies were conducted in Indonesia [87,93], Lao PDR [96], Malaysia [104], Myanmar [112], Thailand [49,117], Vietnam [147,154,155], and also the 3S river basin [63]. Basically, the SWAT-based combined climate change and land use change impact assessment can be divided into two main groups: (1) Consider only the historical climate and land use pattern; and (2) incorporation of future climate and land use projections into the SWAT model.…”

Section: Swat Studies On Climate Change and Land Use Changementioning

confidence: 99%

“…Some of the earliest applications of SWAT in the SEA were for hydrologic analyses of the Mekong River basin [14,39,40]. Analyses of parts or all of the Mekong system with SWAT have continued to the present [41][42][43][44][45] along with increasing numbers of studies that have been performed for specific watersheds located in various SEA countries [46][47][48][49][50][51][52][53]. These SWAT studies have been performed for a wide range of water resource issues, watershed size, and climatic conditions, but there have been no analyses to date of the overall implications of these studies for the SEA region.…”

Section: Introductionmentioning

confidence: 99%

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A Review of SWAT Studies in Southeast Asia: Applications, Challenges and Future Directions

Tan

Gassman

Srinivasan

et al. 2019

Water

106

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The Soil and Water Assessment Tool (SWAT) model is recognized as one of the top hydrological models applied for addressing hydrologic and environmental issues. This is the first review on the SWAT model studies in Southeast Asia, with an emphasis on its applications, current challenges and future research directions. A total of 126 articles were identified since 2006; roughly 50% of these studies were conducted in Vietnam or Thailand. About 16% of the studies were performed at a transnational scale, which included Cambodia, Lao PDR, Thailand, and Vietnam. Model capability assessment, land use, and climate change assessment are the main SWAT applications that have been reported for the region. Most of the SWAT calibration and validation results for these studies were classified as satisfactory to very good results based on widely recognized performance indicators. However, the parameterization, calibration and validation procedures are not well reported in some articles. Availability of reliable data is one of the main problems that SWAT users are confronted with, as these data are either not freely available or restricted from public access in some countries. Hence, future studies should be considered on identification and development of reliable input data for SWAT modeling. SWAT model modification based on the SEA climate, geographical and land use conditions is another research direction to be considered in the future. Moreover, application of SWAT for extreme events simulation requires more attention in this region.

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Section: Swat Studies On Climate Change and Land Use Changementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Review of SWAT Studies in Southeast Asia: Applications, Challenges and Future Directions

Tan

Gassman

Srinivasan

et al. 2019

Water

106

View full text Add to dashboard Cite

show abstract

“…Tan, Ibrahim, Yusop, Duan, and Ling (2015) applied the SWAT model to study land-use change and climate variability, which had increased the annual streamflow and evaporation in the Johor River basin in Malaysia. Shrestha, Bhatta, Shrestha, and Shrestha (2018) used SWAT to predict the effects of future land-use change and climate change variability on streamflow in the Songkhram River basin.…”

mentioning

confidence: 99%

Effects of land‐use change and climate variability on streamflow in the Woken River basin in Northeast China

Shi

et al. 2019

River Research & Apps

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In this study, the soil and water assessment tool, which is a widely used hydrological model, is applied to study the response of streamflow to land‐use changes and climate variability in the Woken River basin in northeastern China. This model is calibrated and verified based on sensitivity analysis to simulate the effects of land‐use change, climate variability, and extreme land‐use scenarios on streamflow. Simulations are performed to construct different scenarios for quantitative analysis. Compared with the base period, the land‐use change reduced the annual average streamflow and had little effect on the monthly streamflow. Climate variability increased the average annual streamflow and had a substantial effect on monthly streamflow. The effect of climate variability on streamflow was much greater than that of land‐use changes. Under the extreme land‐use scenarios, the annual average streamflow under the forestland scenario decreased, and the average annual streamflow under the grassland and agricultural land scenarios increased. Both the forestland and grassland scenarios exhibited lower monthly streamflow from March to August with especially large influences in June–August, which was when floods were more likely to occur. The agricultural land scenario exhibited the opposite trend. These results indicate that climate variability will obviously change streamflow and that natural disasters related to both high and heavy precipitation must be emphasised. Relevant departments can optimize the land‐use structure and spatial layout to mitigate the negative effects of climate variability.

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“…In rapidly urbanized areas, the development of human beings on the landscape through land use changes has always been a concern and considered as a threat to our environment [42,43]. Landscape development is a kind of human disturbance to the environment and is manifested as human-dominated land uses [44].…”

Section: Introductionmentioning

confidence: 99%

Effects of Landscape Development Intensity on River Water Quality in Urbanized Areas

et al. 2019

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Urban development and human activities have greatly changed the appearance of urban landscapes, and also affect urban river water environments. Rapidly urbanized regions in China face particularly severe pressures and challenges in alleviating degradation of river water quality. Information is needed on which indexes of landscape development intensity in rapidly-urbanized areas are the key factors affecting the quality of river water environments, and how these factors affect water quality. In order to answer these questions, this research selected six indexes belonging to three dimensions for landscape development intensity evaluation. Based on five water quality parameters of 20 rivers and the land use data of 20 small watersheds of Liangjiang New Area, Chongqing, China in 2014, this research explored the correlation between the landscape development intensity indexes and river water quality through redundancy analysis. We found that the impervious surface rate and the land average fixed asset investment are the key indexes to affect river water quality. Regulating the corresponding indexes at the urban planning and design level, as well as the decision making level, can effectively achieve the goal of improving urban river water quality. The conclusions inspire strategies in planning and design, and are helpful for government decision making to effectively protect river water environment in rapidly urbanized areas in the developing countries.

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Integrated assessment of the climate and landuse change impact on hydrology and water quality in the Songkhram River Basin, Thailand

Cited by 184 publications

References 27 publications

A Review of SWAT Studies in Southeast Asia: Applications, Challenges and Future Directions

A Review of SWAT Studies in Southeast Asia: Applications, Challenges and Future Directions

Effects of land‐use change and climate variability on streamflow in the Woken River basin in Northeast China

Effects of Landscape Development Intensity on River Water Quality in Urbanized Areas

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