Divergent accumulation of microbial necromass and plant lignin components in grassland soils

Nature Communications
Tian MaXiaojuan Feng

Abstract

The means through which microbes and plants contribute to soil organic carbon (SOC) accumulation remain elusive due to challenges in disentangling the complex components of SOC. Here we use amino sugars and lignin phenols as tracers for microbial necromass and plant lignin components, respectively, and investigate their distribution in the surface soils across Mongolian grasslands in comparison with published data for other grassland soils of the world. While lignin phenols decrease, amino sugars increase with SOC contents in all examined grassland soils, providing continental-scale evidence for the key role of microbial necromass in SOC accumulation. Moreover, in contrast to clay's control on amino sugar accumulation in fine-textured soils, aridity plays a central role in amino sugar accrual and lignin decomposition in the coarse-textured Mongolian soils. Hence, aridity shifts may have differential impacts on microbial-mediated SOC accumulation in grassland soils of varied textures.

References

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Citations

Aug 1, 2019·Global Change Biology·Chao LiangMatthias Kästner
Jul 7, 2020·FEMS Microbiology Ecology·Michaeline B N AlbrightJohn Dunbar
Aug 28, 2020·Global Change Biology·Xuefeng ZhuChao Liang
Nov 23, 2020·Genes, Chromosomes & Cancer·Daniel HübschmannMatthias Schlesner
Nov 8, 2020·The Science of the Total Environment·Qiqi GaoZhangliu Du
Dec 29, 2020·The Science of the Total Environment·Zhiming GuoTimothy A Quine
Jan 7, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Ruochun ZhangDietrich A Volmer
Aug 20, 2020·The Science of the Total Environment·Liuming YangJinsheng Xie
Mar 14, 2021·Global Change Biology·Xiangbi ChenYirong Su
Jun 22, 2021·Environmental Science and Pollution Research International·Qingyue TanMingxiang Xu
Apr 17, 2020·Environmental Science & Technology·Yang DingChongxuan Liu
Jan 3, 2022·The Science of the Total Environment·Yanzhang HuangQianjin Liu
Jan 10, 2022·The Science of the Total Environment·Siddhartha Shankar BhattacharyyaRoberto Parra-Saldívar

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Methods Mentioned

BETA
PCA

Software Mentioned

SEM
R
lavaan

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