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Which Is More Important in Stabilizing Soil Organic Carbon in Mountain Ecosystems: Molecular Features, Mineral Protection, Soil Nutrients, or Elevation? by Zhang Zhongsheng; Jiang Shan; Zhao Wenwen; Guan Qiang; Wu Haitao is a Environmental Science article available to read on EtoBox.

What is Which Is More Important in Stabilizing Soil Organic Carbon in Mountain Ecosystems: Molecular Features, Mineral Protection, Soil Nutrients, or Elevation? about?

The mechanisms that maintain soil organic carbon (SOC) stability along the elevation gradient has not been adequately explored in mountain ecosystems, though numerous work has been performed to reveal potential impacts of multiple environmental factors on SOC stability. The objective of this study was to decipher the predominant factor and effects that affected SOC stability by linking elevation, soil nutrients, minerals, and chemical molecular composition with SOC thermal stability in Changbai Mountain (CBM), Northeast China. Results indicated that SOC ranged from 2.12% to 17.75% without obvious elevation dependency. SOC stability was evaluated using the temperature at which haft of the exothermic mass loss (TG50). The TG50 decreased with elevation at p < 0.05 level. SOC did not vary significantly across soils from predominant plant communities, which were the mixed coniferous and broad-leaved forests (HJL), mixed coniferous forests (ZYL), birch forests (YHL), and tundra vegetation zones (TYD). Total phosphorus (P) and manganese (Mn) differed significantly among these four zones. Aliphatic, alkanes, alkenes, and aromatics were predominant moieties of pyrolytic products of SOC in a

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Author

Zhang Zhongsheng; Jiang Shan; Zhao Wenwen; Guan Qiang; Wu Haitao

Publisher

Elsevier BV

Published

2023

Language

EN

Field

Environmental Science (Physical Sciences)