Fertilizer reduction and biochar amendment promote soil mineral-associated organic carbon, bacterial activity, and enzyme activity in a jasmine garden in southeast China
Yang, Fajun (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Wang, Weiqi (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Wu, Ziwei (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Peng, Jiahao (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Xu, Hongda (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Ge, Maoquan (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Lin, Shaoying (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Zeng, Yu (Minrong Tea Co.)
Sardans i Galobart, Jordi (Centre de Recerca Ecològica i d'Aplicacions Forestals)
Wang, Chun (Fujian Normal University. Key Laboratory of Humid Subtropical Eco-Geographical Process)
Peñuelas, Josep (Centre de Recerca Ecològica i d'Aplicacions Forestals)

Data:	2024
Resum:	Reducing chemical fertilizers and biochar amendment is essential for achieving carbon neutrality, addressing global warming, and promoting sustainable agricultural development. Biochar amendment, a carbon rich soil additive produced through biomass pyrolysis, enhances soil fertility, increases crop yield, and improves soil carbon storage. However, research on the combined effect of fertilizer reduction and biochar amendment on soil mineral associated organic carbon (MAOC) in jasmine gardens is limited. This study aims to determine if biochar can reduce industrial fertilizer usage without compromising soil quality. This study focuses on jasmine cultivation in southeastern China, employing four treatments: conventional fertilization (CK), biochar amendment without fertilizer (BA), fertilizer reduction (FR), and fertilizer reduction with biochar amendment (FRBA). The effects on MAOC, microbial abundance, and enzyme activity were investigated. The FRBA treatment significantly increased MAOC content by 19. 98 % compared to CK (P < 0. 05). The BA and FRBA treatments enhanced the diversity of soil bacteria, including Lactobacillus, Azospirillum, and Cutibacterium, which are associated with soil organic carbon sequestration and nutrient decomposition. The RandomForest model identified β-N-acetyl-glucosaminidase (NAG), electric conductivity (EC), β-1, 4-Glucosidase (BG), soil potential of Hydrogen (pH), soil bulk density (BD), and β-D-cellobiosidase (CBH) as key soil traits promoting MAOC accumulation (P < 0. 05). The results indicate that BA and FRBA improve soil bacterial community structure, enzyme activity, and MAOC content, promoting soil carbon accumulation through environmental factors and dominant bacteria. This study encourages future fertilization protocols that enhance fertilizer efficiency and carbon storage in crop soils.
Ajuts:	Agencia Estatal de Investigación PID2022-140808NB-I00 Agencia Estatal de Investigación TED2021-132627B-I00 Agencia Estatal de Investigación PID2020-115770RB-I00
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	Fertilizer reduction ; Biochar amendment ; Bacterial community structure ; Enzyme activity ; Mineral associated organic carbon ; KEGG pathway ; Jasminum sambac
Publicat a:	Science of the total environment, Vol. 954 (December 2024) , art. 176300, ISSN 1879-1026

DOI: 10.1016/j.scitotenv.2024.176300

Disponible a partir de: 2026-12-30 Postprint

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