Divergent accumulation of microbial necromass and plant lignin components in grassland soils.
Divergent accumulation of microbial necromass and plant lignin components in grassland soils.
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草地土壤中微生物坏死物和植物木质素成分的不同积累
DOI:
10.1038/s41467-018-05891-1
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发表时间:
2018-08-28
影响因子:
16.6
通讯作者:
Feng X
中科院分区:
文献类型:
--
作者:
Ma T;Zhu S;Wang Z;Chen D;Dai G;Feng B;Su X;Hu H;Li K;Han W;Liang C;Bai Y;Feng X
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. It remains unclear how microbes and plants contribute to soil organic carbon (SOC) accrual. Here, using biomarkers, the authors show that microbial necromass and plant-derived lignin components have divergent accumulation mechanisms and that microbial necromass plays a key role in SOC accumulation.
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影响因子:
5.1
作者:
Di Stefano, C.;Ferro, V.;Mirabile, S.
通讯作者:
Mirabile, S.
影响因子:
9.7
作者:
Glaser, B;Turrión, MB;Alef, K
通讯作者:
Alef, K
影响因子:
11.6
作者:
Castellano, Michael J.;Mueller, Kevin E.;Six, Johan
通讯作者:
Six, Johan
影响因子:
22.4
作者:
DZIUBAN, CD;SHIRKEY, EC
通讯作者:
SHIRKEY, EC
影响因子:
2.9
作者:
Guggenberger, G;Frey, SD;Elliott, ET
通讯作者:
Elliott, ET