12. ASSESSMENT OF IMPACTS OF LAND USE ON THE FLOW OF VU GIA - THU BON RIVER BASIN
Thanh bên bài viết
Giới thiệu
Water resources in the Vu Gia - Thu Bon river basin are under pressure due to population growth, socio-economic development, the impact of climate change, and land use change, which is also considered one factor that changes flow regimes in river basins. Therefore, the study “Assessing the impact of land use on the flow regime in the Vu Gia - Thu Bon river basin” is vital and urgent. This study utilized the GIS-based Soil and Water Assessment Tool (SWAT) model to simulate the flow of Vu Gia - Thu Bon river basin at two hydrological stations - Nong Son and Thanh My, during the calibration period (2004 - 2010) and the verification period (2011 - 2015). The evaluation results of both periods, as measured by the NSE and R2 indexes, were found to be above 0.75. Additionally, the study assessed the impact of land use on the flow regime based on two land use scenarios: One for 2015 and another for 2020, with the evaluation period spanning from 2004 to 2018. The study results showed that groundwater flow tends to decrease, while surface runoff tends to increase due to changes in land use. The forest land area in the basin, which accounts for over 93 % of the total land, only decreased by 1 %, while urban land area increased from 0.95 % to 1.53 %, and vacant land area increased from 1.58 % to nearly 3 %. However, the flow in the whole basin was generally not significantly affected.
Toàn văn bài báo
Trích dẫn
[2]. Evans R., and Boardman J., (2003). Curtailment of muddy floods in the Sompton, South Downs, West Sussex, Southern England. Soil Use Manage 19, 223-231.
[3]. Suresh Kr Gurjar (2022). Assessment of the natural flow regime and its variability in a tributary of Ganga River: Impact of land use and land cover change.
[4]. K. Haleem (2022). Hydrological impacts of climate and land-use change on flow regime variations in upper Indus basin.
[5]. Mohammed Gedefaw (2023). Assessing the Impacts of Land use/Land Cover Changes on Water Resources of the Nile River Basin, Ethiopia.
[6]. Hong Nguyen Thi et al., (2014). Applying GIS and SWAT model to evaluate the impact of land use changes on flow volume in the Vu Gia river basin. Department of Geology, University of Natural Sciences, Hanoi National University, 80-85.
[7]. Loi Nguyen Kim et al., (2012). Instructions for using SWAT model 2012 version.
[8]. Loi Nguyen Kim et al., (2013). Instructions for using SWAT model 2013 version.
[9]. Mauro Di Luzio, Raghavan Srinivasan and Jeffrey G. Arnold (2002). Integration of watershed tools and the SWAT model into basins. Journal of the American Water Resources Association, Vol. 38, No. 4.
[10]. Van Anh Truong (2020). Research and application of machine learning algorithms in flow forecasting in the Vu Gia - Thu Bon river basin. Final report on CS.2020.05.14 topic.
[11]. Thu Trinh Thi Hoai, Dao Bui Thi Thuy, Nghia Nguyen Viet, Huong Dao Mai (2020). Applying GIS to determine the morphology of the Vu Gia - Thu Bon river basin. Journal of Mining and Geology Science and Technology, Vol 61, Issue 4, 25-35.
[12]. Tinh Tran Van (2013). Develop a flood map in the lower Vu Gia - Thu Bon river basin. Master of Science Thesis.
[13]. Tu Hoang Le, Huyen Nguyen, Phan Thi Ha, Dang Nguyen Dong Phuong (2021) Application of SWAT model for zoning soil erosion and surface water resource in Gia Lai province. Journal of Hydrometeorology, 732, 13-27.
[14]. J. G. Arnold, P. M. Allen and D. Morgan (2001). Hydrologic model for the design of constructed wetlands. Wetlands, Vol. 21, No. 2, 167-178.
[15]. S. L. Neitsch (2009). Overview of Soil and Water Assessment Tool (SWAT) model. In: Arnold, J et al., eds, 2009, Soil and Water Assessment Tool (SWAT): Global Applications, Special Publication No. 4, World Associatiom of Soil and Water Conservation.
[16]. https://www.fao.org/soils-portal/data-hub/soil-maps-and-databases/faounesco-soil-map -of-the-world/en/.
