Spatial patterns and environmental functions of dissolved organic matter in grassland soils of China

Peng Zhou, Long Tian, Nigel Graham, Shian Song, Renzun Zhao, Muhammad Saboor Siddique, Ying Hu, Xianyong Cao, Yonglong Lu (), Menachem Elimelech () and Wenzheng Yu ()
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Peng Zhou: Chinese Academy of Sciences
Long Tian: Chinese Academy of Sciences
Nigel Graham: South Kensington Campus
Shian Song: Chinese Academy of Sciences
Renzun Zhao: North Carolina Agricultural and Technical State University
Muhammad Saboor Siddique: Chinese Academy of Sciences
Ying Hu: University of Chinese Academy of Sciences
Xianyong Cao: Chinese Academy of Sciences
Yonglong Lu: Xiamen University
Menachem Elimelech: Yale University
Wenzheng Yu: Chinese Academy of Sciences

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Soil dissolved organic matter (DOM) is crucial to atmospheric, terrestrial and aquatic environments as well as human life. Here, by characterizing DOM from 89 grassland soils throughout China, we reveal the spatial association between DOM geochemistry in the dry season vs annual ecosystem exchange and cancer cases. The humic-like and high molecular weight (3.4–25 kDa) fractions with lower biodegradability, decline from the northern to the southern regions of China, and are correlated with lower soil respiration and net ecosystem productivity at the continental scale. The

Date: 2024
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DOI: 10.1038/s41467-024-50745-8

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