Mapping global lake dynamics reveals the emerging roles of small lakes.

Autor: Pi X; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.; Department of Urban Planning and Design, The University of Hong Kong, Hong Kong SAR, China.; Urban Systems Institute, The University of Hong Kong, Hong Kong SAR, China., Luo Q; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Feng L; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China. fengl@sustech.edu.cn., Xu Y; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.; Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark., Tang J; Department of Biology, University of Copenhagen, Copenhagen, Denmark.; Department of Physical Geography and Ecosystem Science, Lund University, Lund, Sweden., Liang X; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Ma E; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Cheng R; Guangdong Provincial Key Laboratory of Brain-inspired Intelligent Computation, Department of Computer Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Fensholt R; Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark., Brandt M; Department of Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark., Cai X; Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China., Gibson L; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China., Liu J; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.; School of Water Conservancy, North China University of Water Resources and Electric Power, 450046, Zhengzhou, China., Zheng C; School of Environmental Science and Engineering, Southern University of Science and Technology, Shenzhen, China.; EIT Institute for Advanced Study, Ningbo, China., Li W; Department of Urban Planning and Design, The University of Hong Kong, Hong Kong SAR, China.; Urban Systems Institute, The University of Hong Kong, Hong Kong SAR, China.; Institute for Climate and Carbon Neutrality, The University of Hong Kong, Hong Kong SAR, China., Bryan BA; Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Burwood, Victoria, Australia.
Jazyk: angličtina
Zdroj: Nature communications [Nat Commun] 2022 Oct 01; Vol. 13 (1), pp. 5777. Date of Electronic Publication: 2022 Oct 01.
DOI: 10.1038/s41467-022-33239-3
Abstrakt: Lakes are important natural resources and carbon gas emitters and are undergoing rapid changes worldwide in response to climate change and human activities. A detailed global characterization of lakes and their long-term dynamics does not exist, which is however crucial for evaluating the associated impacts on water availability and carbon emissions. Here, we map 3.4 million lakes on a global scale, including their explicit maximum extents and probability-weighted area changes over the past four decades. From the beginning period (1984-1999) to the end (2010-2019), the lake area increased across all six continents analyzed, with a net change of +46,278 km 2 , and 56% of the expansion was attributed to reservoirs. Interestingly, although small lakes (<1 km 2 ) accounted for just 15% of the global lake area, they dominated the variability in total lake size in half of the global inland lake regions. The identified lake area increase over time led to higher lacustrine carbon emissions, mostly attributed to small lakes. Our findings illustrate the emerging roles of small lakes in regulating not only local inland water variability, but also the global trends of surface water extent and carbon emissions.
(© 2022. The Author(s).)
Databáze: MEDLINE
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