Unlocking Mechanisms for Soil Organic Matter Accumulation: Carbon Use Efficiency and Microbial Necromass as the Keys
University of Alberta · Chinese Academy of Sciences · +8 more institutions
Abstract
ABSTRACT Soil microorganisms transform plant‐derived C (carbon) into particulate organic C (POC) and mineral‐associated C (MAOC) pools. While microbial carbon use efficiency (CUE) is widely recognized in current biogeochemical models as a key predictor of soil organic carbon (SOC) storage, large‐scale empirical evidence is limited. In this study, we proposed and experimentally tested two predictors of POC and MAOC pool formation: microbial necromass (using amino sugars as a proxy) and CUE (by 18 O‐H 2 O approach). Soil sampling (0–10 and 10–20 cm depth) was conducted along a climatic transect of 900 km on the Loess Plateau, including cropland, grassland, shrubland, and forest ecosystems, to ensure the…
Citation impact
- FWCI
- 107.25
- Percentile
- 100%
- References
- 97
Authors
10- YYYang Yang
University of Alberta, Chinese Academy of Sciences, Shaanxi Institute of Zoology, Institute of Earth Environment
- AGAnna Gunina
Peoples' Friendship University of Russia, Chinese Academy of Sciences, Russian New University, Institute of Applied Ecology
- CHCheng Huan
Sichuan University
- LLLiangxu Liu
Northwest Institute of Eco-Environment and Resources
- BWBaorong Wang
Institute of Soil and Water Conservation
Topics & keywords
- Environmental science
- Soil carbon
- Organic matter
- Soil organic matter
- Carbon cycle
- Carbon fibers
- Ecology
- Environmental chemistry