Simulation of Runoff and Sediment Yield for a Kaneri Watershed Using SWAT Model

The relationship between water-sediment processes and landscape pattern changes has currently become a research hotspot in low-carbon water and land resource optimization research. The SWAT-VRR model is a distributed hydrological model which better shows the effect of land use landscape change on hydrological processes in the watershed. In this paper, the hydrological models of the Dapoling watershed were built, the runoff and sediment yield from 2006 to 2011 were simulated, and the relationship between landscape patterns and water-sediment yield was analyzed. The results show that the SWAT-VRR model is more accurate and reasonable in describing runoff and sediment yield than the SWAT model. The sub-basins whose soil erosion is relatively light are mostly concentrated in the middle reaches with a slope mainly between 0–5°. The NP, PD, ED, SPIIT, SHEI, and SHDI of the watershed increased slightly, and the COHESION, AI, CONTAG, and LPI showed a certain decrease. The landscape pattern is further fragmented, with the degree of landscape heterogeneity increasing and the connection reducing. The runoff, sediment yield and surface runoff are all extremely significantly negatively correlated with forest, which implies that for more complicated patch shapes of forest which have longer boundaries connecting with the patches of other landscape types, the water and sediment processes are regulated more effectively. Therefore, it can be more productive to carry out research on the optimization of water and soil resources under the constraint of carbon emission based on the SWAT-VRR model.

Download Full-text

Simulation of Runoff and Sediment Yield for a Himalayan Watershed Using SWAT Model

Journal of Water Resource and Protection ◽

10.4236/jwarp.2010.23031 ◽

2010 ◽

Vol 02 (03) ◽

pp. 267-281 ◽

Cited By ~ 37

Author(s):

Sanjay K. Jain ◽

Jaivir Tyagi ◽

Vishal Singh

Keyword(s):

Sediment Yield ◽

Swat Model ◽

Runoff And Sediment Yield

Download Full-text

Simulation of runoff and sediment yield in Zhuxi watershed in changting county of China based on SWAT model

2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS) ◽

10.1109/igarss.2017.8127744 ◽

2017 ◽

Author(s):

Xiongbin Zhu ◽

Xiaoqin Wang ◽

Shujiao Zeng ◽

Weidong Zhou

Keyword(s):

Sediment Yield ◽

Swat Model ◽

Zhuxi Watershed ◽

Runoff And Sediment Yield

Download Full-text

Runoff and sediment yield modeling using SWAT model: case of Wadi Hatab basin, central Tunisia

Arabian Journal of Geosciences ◽

10.1007/s12517-016-2607-3 ◽

2016 ◽

Vol 9 (11) ◽

Cited By ~ 4

Author(s):

Narjes Chaâbane Ben Salah ◽

Habib Abida

Keyword(s):

Sediment Yield ◽

Swat Model ◽

Model Case ◽

Central Tunisia ◽

Yield Modeling ◽

Runoff And Sediment Yield

Download Full-text

Modeling runoff response to land-use changes using the SWAT model in the Mundaú watershed, Brazil

Journal of Environmental Analysis and Progress ◽

10.24221/jeap.5.2.2020.2828.194-206 ◽

2020 ◽

Vol 5 (2) ◽

pp. 194-206

Author(s):

Carolyne Wanessa Lins de Andrade Farias ◽

Suzana Maria Gico Lima Montenegro ◽

Abelardo Antônio de Assunção Montenegro ◽

José Romualdo de Sousa Lima ◽

Raghavan Srinivasan ◽

...

Keyword(s):

Land Use ◽

Land Use Change ◽

Sediment Yield ◽

Surface Runoff ◽

Assessment Tool ◽

Swat Model ◽

Land Use Changes ◽

Water Yield ◽

Grazing Land ◽

Runoff And Sediment Yield

Land-use change has a significant influence on runoff process of any watershed, and the deepening of this theme is essential to assist decision making, within the scope of water resources management. The study was conducted for Mundaú River Basin (MRB) using the Soil and Water Assessment Tool (SWAT) model. The study aims to assess the issue of land-use change and its effect on evapotranspiration, surface runoff, and sediment yield. Input data like land use, topography, weather, and soil data features are required to undertake watershed simulation. Two scenarios of land use were analyzed over 30 years, which were: a regeneration scenario (referring to use in the year 1987) and another scene of degradation (relating to use in the year 2017). Land use maps for 1987 and 2017 were acquired from satellite images. Overall, during the last three decades, 76.4% of forest was lost in the MRB. The grazing land increased in 2017 at a few more than double the area that existed in 1987. Changes in land use, over the years, resulted in an increase of about 37% in the water yield of MRB. Changes have led to increased processes such as surface runoff and sediment yield and in the decrease of evapotranspiration. The spatial and temporal distribution of land use controls the water balance and sediment production in the MRB.

Download Full-text

Simulated Runoff and Sediment Yield Responses to Land-Use Change Using the SWAT Model in Northeast China

Water ◽

10.3390/w11050915 ◽

2019 ◽

Vol 11 (5) ◽

pp. 915 ◽

Cited By ~ 8

Author(s):

Limin Zhang ◽

Xianyong Meng ◽

Hao Wang ◽

Mingxiang Yang

Keyword(s):

Land Use ◽

Land Use Change ◽

Sediment Yield ◽

Swat Model ◽

Urban Land ◽

Hydrological Process ◽

Water Percolation ◽

Yield Responses ◽

Soil And Water ◽

Runoff And Sediment Yield

Land-use change is one key factor influencing the hydrological process. In this study, the Hun River Basin (HRB) (7919 km2), a typical alpine region with only four gauge meteorological stations, was selected as the study area. The China Meteorological Assimilation Driving Datasets for the SWAT model (CMADS), widely adopted in East Asia, was used with the Soil and Water Assessment Tool (SWAT) model to simulate runoff and sediment yield responses to land-use change and to examine the accuracy of CMADS in the HRB. The criteria values for daily/monthly runoff and monthly sediment yield simulations were satisfactory; however, the validation of daily sediment yield was poor. Forestland decreased sediment yield throughout the year, increased water percolation, and reduced runoff during the wet season, while it decreased water percolation and increased runoff during the dry season. The responses of grassland and forestland to runoff and sediment yield were similar, but the former was weaker than the latter in terms of soil and water conservation. Cropland (urban land) generally increased (increased) runoff and increased (decreased) sediment yield; however, a higher sediment yield could occur in urban land than that in cropland when precipitation was light.

Download Full-text