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The dominant microorganisms vary with aggregates sizes in promoting soil carbon accumulation under straw application
Authors
Aurore Degré
C. Gao
+9 more
D. Jin
J. Li
Shengping Li
G. Liang
Jinjing Lu
B. Wang
X. Wu
M. Zhang
F. Zheng
Publication date
1 January 2021
Publisher
'Informa UK Limited'
Doi
Cite
Abstract
peer reviewedUnraveling the influence of microbes on C content at aggregate scale is pivotal for promoting soil C accumulation. Previous studies were based mainly on the mutual transformation process between aggregates, the links between the microorganisms in initial aggregates and inner C content and aggregate sizes were still unclear. In this study, the classified aggregates (> 5 mm, 2–5 mm, 1–2 mm, 0.25–1 mm, and 2 mm aggregates. Aggregates of > 5 mm were more capable of improving unstable C accumulation and C derived from straw (Cstraw) than smaller aggregates. Fungi and Gram-negative bacteria (G-) were more important to increasing C accumulation in > 2 mm aggregates, whereas Gram-positive (G+) bacteria dominated in < 2 mm aggregates. The results indicate that the contribution of microorganisms within aggregates to inner C accumulation was associated with aggregate sizes. © 2021 Informa UK Limited, trading as Taylor & Francis Group
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Last time updated on 12/01/2022