期刊
SCIENCE ADVANCES
卷 3, 期 4, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.1602008
关键词
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资金
- European Research Council (ERC) under the European Community's Seventh Framework Programme [242658, 647038]
- Australian Research Council [DP 13010484, DP 15010419, DP 170104634]
- Grains Research and Development Corporation [UWS00008]
- Hermon-Slade Foundation
- Marie Sklodowska-Curie Actions of the Horizon 2020 Framework Programme under a Research Executive Agency [H2020-MSCA-IF-2016, 702057]
Climatic conditions shift gradually over millennia, altering the rates at which carbon (C) is fixed from the atmosphere and stored in the soil. However, legacy impacts of past climates on current soil C stocks are poorly understood. Weused data from more than 5000 terrestrial sites from three global and regional data sets to identify the relative importance of current and past (Last Glacial Maximum andmid-Holocene) climatic conditions in regulating soil C stocks in natural and agricultural areas. Paleoclimate always explained a greater amount of the variance in soil C stocks than current climate at regional and global scales. Our results indicate that climatic legacies help determine global soil C stocks in terrestrial ecosystems where agriculture is highly dependent on current climatic conditions. Our findings emphasize the importance of considering how climate legacies influence soil C content, allowing us to improve quantitative predictions of global C stocks under different climatic scenarios.
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