Trade‐offs in carbon‐degrading enzyme activities limit long‐term soil carbon sequestration with biochar addition

Autor: Jiao Feng, Dailin Yu, Robert L. Sinsabaugh, Daryl L. Moorhead, Mathias Neumann Andersen, Pete Smith, Yanting Song, Xinqi Li, Qiaoyun Huang, Yu‐Rong Liu, Ji Chen
Rok vydání: 2023
Předmět:
Zdroj: Feng, J, Yu, D, Sinsabaugh, R L, Moorhead, D L, Andersen, M N, Smith, P, Song, Y, Li, X, Huang, Q, Liu, Y R & Chen, J 2023, ' Trade-offs in carbon-degrading enzyme activities limit long-term soil carbon sequestration with biochar addition ', Biological Reviews . https://doi.org/10.1111/brv.12949
ISSN: 1469-185X
1464-7931
DOI: 10.1111/brv.12949
Popis: Biochar amendment is one of the most promising agricultural approaches to tackle climate change by enhancing soil carbon (C) sequestration. Microbial-mediated decomposition processes are fundamental for the fate and persistence of sequestered C in soil, but the underlying mechanisms are uncertain. Here, we synthesise 923 observations regarding the effects of biochar addition (over periods ranging from several weeks to several years) on soil C-degrading enzyme activities from 130 articles across five continents worldwide. Our results showed that biochar addition increased soil ligninase activity targeting complex phenolic macromolecules by 7.1%, but suppressed cellulase activity degrading simpler polysaccharides by 8.3%. These shifts in enzyme activities explained the most variation of changes in soil C sequestration across a wide range of climatic, edaphic and experimental conditions, with biochar-induced shift in ligninase:cellulase ratio correlating negatively with soil C sequestration. Specifically, short-term (
Databáze: OpenAIRE
Externí odkaz: