Hệ thống quản lý khoa học - Modeling land use and climate changes impacts on hydrological processes of Nam Rom river basin in Vietnam

Tên bài báo:	Modeling land use and climate changes impacts on hydrological processes of Nam Rom river basin in Vietnam (Lượt xem: )
Tên tạp chí:	7th International Conference on Sustainable Energy and Environment (SEE 2018)-Technology & Innovation for Global Energy Revolution
Tạp chí thuộc:	Tạp chí KH quốc tế (khác)
Chỉ số IF/H:
Năm xuất bản:	2018
Nước xuất bản:	Thái Lan
Tác giả thuộc Học viện:	TS. Ngô Thanh Sơn PGS.TS. Trần Trọng Phương
Các tác giả bài báo:	Ngô Thanh Sơn Trần Trọng Phương Hoàng Lê Hường
Tóm tắt bài báo:	Land use/land cover (LULC) and climate changes are two main factors directly affecting regional hydrologic conditions and results in a variety of impacts on soil erosion and degradation, water quantity and quality throughout the world. However, very few studies in Vietnam have investigated changes in hydrological process under the impact of climate and land use changes on a basin scale. Moreover, the local impacts of climate change and human activities on hydrology differ from place to place and need to be investigated on a regional scale. The objective of this study is to assess the individual and combined impacts of land use and climate changes on flow transport for the Nam Rom river basin, Northwestern Viet Nam using Remote Sensing (RS) and Soil and Water Assessment Tools (SWAT) model. Maps with land-use were made using RS for the years 1992 and 2015. SWAT model was used for hydrological process simulation. Results indicated that SWAT proved to be a powerful tool in simulating the impacts of land use and climate change on catchment hydrology. The change in better land use in the study area between from 1992 and 2015 strongly contributed to increasing hydrological processes (ET, percolation, ground water, and water yield) while decreased surface flow. Data on climate change in the period 1992-2015 led to significant decrease of all hydrological components. The combination of land use and climate changes impacts caused decrease significantly surface runoff (- 16.9%), ground water (-5.7%), water yield (-9.2%), and sediment load (-4.9%). Overall, the changes in climate affected hydrological components more significantly and strongly than the changes in land use in the Nam Rom river basin during the 1992–2015. Under impacts of projected land use and climate change scenarios (2015-2030) on hydrological process of the upper Nam Rom river basin indicate that ET and surface flow are more sensitive to the changes in land use and climate in the future. In conclusion, this study played an important role in developing SWAT application of the Vietnam where the most disaster-prone regions suffering from typhoons, drought, landslide, soil erosion, and forest degradation. The results from this study provided the experience and techniques to be possibly applied to other river basins in Vietnam and could be value of to planners/decision-makers for implementation of appropriate integrated river basin management as well as the development of mitigation and adaption strategies in relation to land use and climate changes.
Link:	file:///Volumes/NO%20NAME/Home%20-%20SEE%202018%20Conference_files/files/SEE2018/F-03.pdf