Separation of the Climatic and Land Cover Impacts on the Flow Regime Changes in Two Watersheds of Northeastern Tibetan Plateau
Article
Article Title | Separation of the Climatic and Land Cover Impacts on the Flow Regime Changes in Two Watersheds of Northeastern Tibetan Plateau |
---|---|
ERA Journal ID | 200113 |
Article Category | Article |
Authors | Yang, Linshan (Author), Feng, Qi (Author), Yin, Zhenliang (Author), Deo, Ravinesh C. (Author), Wen, Xiaohu (Author), Si, Jianhua (Author) and Li, Changbin (Author) |
Journal Title | Advances in Meteorology |
Journal Citation | 2017, pp. 1-15 |
Article Number | 6310401 |
Number of Pages | 15 |
Year | 2017 |
Place of Publication | United States |
ISSN | 1687-9309 |
1687-9317 | |
Digital Object Identifier (DOI) | https://doi.org/10.1155/2017/6310401 |
Web Address (URL) | https://www.hindawi.com/journals/amete/aip/6310401/ |
Abstract | Assessment of the effects of climate change and land use/cover change (LUCC) on the flow regimes in watershed regions are fundamental research needs in terms of the management of water resources and eco-social sustainable developments. In this study, a statistical and modeling 14 combination method utilizing the Soil and Water Assessment Tool (SWAT) has been adopted in two watersheds of northeastern Tibetan Plateau in order to separate the individual impacts of climate and LUCC on the flow regime metrics. The results of the analyzed models confirm that the precipitation and streamflow first declined for the study period 1980 to 1995, and then it increased from the period 1996 to 2010 in the two watershed regions. In terms of the temperature, there was a significant increase in both variables within the two watersheds for the period 1980-2010. An evaluation of LUCC influence of both factors showed that the changes in the growth of vegetation, including the forestland, grassland and shrub area has increased gradually, while the barren area has decreased in Yingluoxia catchment (YLC) whereas no obvious change was evident in LUCC of Minxian catchment (MXC). The integrated effects of both LUCC and climate change appears to have led to an increase in the annual streamflow in the YLC region and a subsequent decline in the MXC region by approximately 3.2% and 4.3% of their total streamflow, respectively. It was interesting to note that climate change shown an opposite effect in two watersheds, leading to an increase in streamflow in YLC and a decline in MXC region, occupying approximately 107.3% and 93.75% of the total streamflow changes, respectively, reflection of climatic latitude effect on 29 streamflow. LUCC contributed to a decrease in streamflow by approximately 7.30% and 6.25% of the total streamflow changes. It is thus construed that the climatic factors contribute to more significant influence than LUCC on the magnitude, variability, duration and component of the flow regimes, implying that the climate certainly dominates the flow regime changes in northeastern Tibetan Plateau. |
Keywords | climate change; LUCC; flow regimes; SWAT; Heihe River Basin; Taohe River Basin |
ANZSRC Field of Research 2020 | 410402. Environmental assessment and monitoring |
370108. Meteorology | |
370202. Climatology | |
410404. Environmental management | |
Byline Affiliations | Chinese Academy of Sciences, China |
Northwest Institute of Eco-Environment and Resources, China | |
School of Agricultural, Computational and Environmental Sciences | |
Lanzhou University, China | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q464q/separation-of-the-climatic-and-land-cover-impacts-on-the-flow-regime-changes-in-two-watersheds-of-northeastern-tibetan-plateau
Download files
1017
total views113
total downloads5
views this month1
downloads this month