Title | Divergent accumulation of microbial necromass and plant lignin components in grassland soils |
Authors | Ma, Tian Zhu, Shanshan Wang, Zhiheng Chen, Dima Dai, Guohua Feng, Bowei Su, Xiangyan Hu, Huifeng Li, Kaihui Han, Wenxuan Liang, Chao Bai, Yongfei Feng, Xiaojuan |
Affiliation | Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China. Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China. Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China. Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China. China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China. Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Liaoning, Peoples R China. Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China. Feng, XJ (reprint author), Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China. |
Keywords | STRUCTURAL EQUATION MODELS PARTICLE-SIZE FRACTIONS ORGANIC-MATTER AMINO-SUGARS CARBON SEQUESTRATION BACTERIAL RESIDUES LASER DIFFRACTION INNER-MONGOLIA NORTHERN CHINA MURAMIC ACID |
Issue Date | 2018 |
Publisher | NATURE COMMUNICATIONS |
Citation | NATURE COMMUNICATIONS. 2018, 9. |
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. |
URI | http://hdl.handle.net/20.500.11897/516808 |
ISSN | 2041-1723 |
DOI | 10.1038/s41467-018-05891-1 |
Indexed | SCI(E) PubMed |
Appears in Collections: | 城市与环境学院 |