Journal
HYDROLOGICAL SCIENCES JOURNAL-JOURNAL DES SCIENCES HYDROLOGIQUES
Volume 59, Issue 5, Pages 1095-1108Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/02626667.2013.819433
Keywords
climate change; hydrology; land-use change; sediment yield; SWAT model; Be River catchment; Vietnam
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Funding
- Global Center of Excellence (GCOE) program of the University of Yamanashi
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The impact of climate and land-use changes on hydrological processes and sediment yield is investigated in the Be River catchment, Vietnam, using the Soil and Water Assessment Tool (SWAT) hydrological model. The sensitivity analysis, model calibration and validation indicated that the SWAT model could reasonably simulate the hydrology and sediment yield in the catchment. From this, the responses of the hydrology and sediment to climate change and land-use changes were considered. The results indicate that deforestation had increased the annual flow (by 1.2%) and sediment load (by 11.3%), and that climate change had also significantly increased the annual streamflow (by 26.3%) and sediment load (by 31.7%). Under the impact of coupled climate and land-use changes, the annual streamflow and sediment load increased by 28.0% and 46.4%, respectively. In general, during the 1978-2000 period, climate change influenced the hydrological processes in the Be River catchment more strongly than the land-use change.
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