Your browser doesn't support javascript.
loading
Fungal necromass contribution to carbon sequestration in global croplands: A meta-analysis of driving factors and conservation practices.
Liu, Dong; Zhou, Ziyan; Iqbal, Shahid; Dou, Ting Ting; Bonito, Gregory; Liu, Wei; An, Shaoshan; Chater, Caspar C C; Perez-Moreno, Jesus; Che, Rongxiao; Jones, Davey L; Yu, Fuqiang.
Afiliação
  • Liu D; The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China. Electronic address: liudongc@mail.kib.ac.cn.
  • Zhou Z; The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
  • Iqbal S; Department of Economic Plants and Biotechnology, Yunnan Key Laboratory for Wild Plant Resources, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China; Centre for Mountain Futures (CMF), Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, China.
  • Dou TT; School of Ecology and Environmental Science, Yunnan University, Kunming 650500, China.
  • Bonito G; Department of Plant, Molecular Plant Sciences Building, Michigan State University, 1066 Bogue St., East Lansing, MI 48824, USA.
  • Liu W; The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China.
  • An S; State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, Northwest A&F University, Yangling 712100, China.
  • Chater CCC; Royal Botanic Gardens, Kew, Richmond, Surrey TW9 3AE, UK; Plants, Photosynthesis, and Soil, School of Biosciences, University of Sheffield, Sheffield S10 2TN, UK.
  • Perez-Moreno J; Colegio de Postgraduados, Campus Montecillo, Edafologia, Texcoco 56230, Mexico.
  • Che R; Institute of International Rivers and Eco-security, Yunnan University, Kunming 650500, China.
  • Jones DL; School of Environmental and Natural Sciences, Bangor University, Bangor, Gwynedd LL57 2UW, UK; SoilsWest, Centre for Sustainable Farming Systems, Food Futures Institute, Murdoch University, Perth, WA 6150, Australia.
  • Yu F; The Germplasm Bank of Wild Species & Yunnan Key Laboratory for Fungal Diversity and Green Development, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, Yunnan, China. Electronic address: fqyu@mail.kib.ac.cn.
Sci Total Environ ; 949: 174954, 2024 Nov 01.
Article em En | MEDLINE | ID: mdl-39067597
ABSTRACT
Fungal necromass carbon (FNC) contributes significantly to the build-up of soil organic carbon (SOC) by supplying abundant recalcitrant polymeric melanin present in the fungal cell wall. However, the influence of a wide range of conservation practices and associated factors on FNC accumulation and contribution to SOC in global croplands remains unexplored. Here, a meta-analysis was performed using 873 observations across three continents, together with structural equation modeling, to evaluate conservation practices and factors responsible for the enhancement of FNC and SOC. FNC content (8.39 g kg-1) of North American soils was highest compared to FNC content of Asian and European soils. The structural equation models showed a significant (p < 0.05) positive influence of microbial biomass carbon (MBC), soil pH, and clay contents on the accumulation of FNC. Soil C/N ratio and climate factors, however, had only minor influences on FNC accumulation. Notably, the main driver of FNC was MBC, which is mainly influenced by the soil total N and geographic factors in the study areas. Typical 5 cropland practices had significant effect size (p < 0.05) on FNC, leading to an increase of 12 % to 26 %, and the FNC content was greatest under straw amendment (26 %). Fungal necromass accumulation efficiency ranged from 23 % to 45 % depending on cropland practices non- and reduced tillage was the most efficient (45 %), followed by crop coverage (32 %), straw amendment (30 %), and manure application (27 %), while N fertilization had the lowest efficiency (23 %). We conclude that FNC contributes to over a quarter of SOC, highlighting its major role in enhancing C sequestration worldwide. Conservation practices, particularly non-tillage or reduced tillage, are important to enhance C sequestration from FNC in croplands.
Assuntos
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Agricultura / Sequestro de Carbono / Fungos Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Solo / Agricultura / Sequestro de Carbono / Fungos Idioma: En Revista: Sci Total Environ Ano de publicação: 2024 Tipo de documento: Article