Relationship between lake salinity and the climatic gradient in northeastern China and its implications for studying climate change

Han，Long1,2,3; Li，Yumei2,3; Zou，Yafei4; Gao，Xinbo5; Gu，Yongjian2,3; Wang，Luo5

2022-01-20

10.1016/j.scitotenv.2021.150403

SCIENCE OF THE TOTAL ENVIRONMENT   影响因子和分区

0048-9697

1879-1026

The rising temperatures, increased evaporation, and altered precipitation patterns associated with global warming pose threats to aquatic ecosystems, especially the salinization of lake water and changes in the terrestrial carbon budget. We studied a series of samples of catchment soils, surface sediments, and sediment cores from 51 lakes and reservoirs covering an extensive climatic range in northeastern China. Measurements included salinity indices (electrical conductivity and pH) and other physicochemical parameters, including magnetic properties and color (chroma). The results indicate that the occurrence of salt minerals and the salinity of the lake sediments are dominated by the arid climatic conditions of the region. This enabled us to develop climatic transfer functions between salinity, precipitation and evaporation, with potential applications in paleoclimatic research. As carbonates are the dominant salts in most of the studied lakes and reservoirs, past salinity variations are likely reflected by changes in HCO and CO concentrations, which provides the opportunity to study the response of water-CO-carbonate interactions to climate change. Our findings emphasize the important role of alkaline lakes in carbon burial and carbon neutralization, in the context of ongoing global warming.

Carbon burial Climatic transfer functions Lake/reservoir sediments Salinization

SCI ; EI

英语

第一

WOS:000704387600004

20213810929589

Alkalinity ; Aquatic ecosystems ; Budget control ; Carbon ; Catchments ; Evaporation ; Global warming ; Physicochemical properties ; Sediments ; Transfer functions

Atmospheric Properties:443.1 ; Ecology and Ecosystems:454.3 ; Soil Mechanics and Foundations:483 ; Chemistry, General:801.1 ; Physical Chemistry:801.4 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Mathematics:921

ENVIRONMENT/ECOLOGY

2-s2.0-85115204245

Scopus

1.School of Environmental Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
2.Key Laboratory of Computational Geodynamics,College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing,100049,China
3.Molecular Fossil Laboratory,Testing and Analysis Center,University of Chinese Academy of Sciences,Beijing,101408,China
4.Yunnan Key Laboratory of Earth System Science,Yunnan University,Kunming,650500,China
5.Key Laboratory of Cenozoic Geology and Environment,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,100029,China

Han，Long,Li，Yumei,Zou，Yafei,et al. Relationship between lake salinity and the climatic gradient in northeastern China and its implications for studying climate change[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,805.

Han，Long,Li，Yumei,Zou，Yafei,Gao，Xinbo,Gu，Yongjian,&Wang，Luo.(2022).Relationship between lake salinity and the climatic gradient in northeastern China and its implications for studying climate change.SCIENCE OF THE TOTAL ENVIRONMENT,805.

Han，Long,et al."Relationship between lake salinity and the climatic gradient in northeastern China and its implications for studying climate change".SCIENCE OF THE TOTAL ENVIRONMENT 805(2022).