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Climate change induced eutrophication of cold-water lake in an ecologically fragile nature reserve

Journal article
Authors Xiaotian Lu
Yonglong Lu
Deliang Chen
Chao Su
Shuai Song
Tieyu Wang
Hanqin Tian
Ruoyu Liang
Meng Zhang
Kifayatullah Khan
Published in Journal of Environmental Sciences (China)
Volume 75
Pages 359-369
ISSN 1001-0742
Publication year 2019
Published at Department of Earth Sciences
Pages 359-369
Language en
Keywords Alpine lakes, Atmospheric circulation, Climate change, Eutrophication
Subject categories Earth and Related Environmental Sciences


© 2018 Aquatic ecosystem sustainability around the globe is facing crucial challenges because of increasing anthropogenic and natural disturbances. In this study, the Tianchi Lake, a typical cold-water lake and a UNESCO/MAB (Man and Biosphere) nature reserve located in high latitude and elevation with the relatively low intensity of human activity was chosen as a system to examine the linkages between climate change and eutrophication. As a part of the UNESCO Bogda Man and Biosphere Reserve, Tianchi Lake has been well preserved for prevention from human intervention, but why has it been infected with eutrophication recent years? Our results show that climate change played a significant role in the eutrophication in the Tianchi Lake. Increased temperature, changed precipitation pattern and wind-induced hydrodynamic fluctuations in the summer season were suggested to make a major contribution to the accelerated eutrophication. The results also showed that the local temperature and precipitation changes were closely linked to the large-scale atmospheric circulation, which opens the door for the method to be applied in other regions without local climatic information. This study suggests that there is an urgent need to take into consideration of climate change adaptation into the conservation and management of cold-water lakes globally.

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