Lakes are essential components of the water cycle and ecosystems. Therefore, the ecology and water security of lakes are of great concerns. However, in Tibetan Plateau (TP), which is known as the Asian water towers, the knowledge about one of the most critical bioindicators, the Chlorophyll-a (Chl-a), is limited. Based on multiple remote sensing techniques, this thesis aims to investigate the pattern of Chl-a in TP’s alpine lake system and its links to climate change. Firstly, the spatiotemporal variations of Chl-a in lakes will be retrieved. Secondly, the water storage changes for lakes will be estimated, along with the division of the contribution of all significant water budget components. Thirdly, the impacts of climate change on lake Chl-a will be identified, through correlation analysis of key climate factors and the variated response of Chl-a changes in lakes dominated by different runoff type. This study is expected to enhance our understanding of lake ecology management under the scenario of climate change.
About the Speaker
Mr. Xuehui Pi is a second-year joint Ph.D. student in the Department of Urban Planning and Design at the University of Hong Kong (HKU) and the School of Environmental Science and Engineering at the Southern University of Science and Technology (SUSTech). He received his bachelor degree from SUSTech in 2018. His research focuses on simulating hydrological variables using satellite remote sensing.
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