Nitrogen Addition Increases the Organic Residue‐Induced Carbon Mineralization by Shifting Soil Bacterial and the Fungal Community Structure and Co‐Occurrence Network DOI

Dongmei Lang,

Cheng Gong, Peng Zhang

et al.

Soil Use and Management, Journal Year: 2025, Volume and Issue: 41(2)

Published: April 1, 2025

ABSTRACT Organic residue plus nitrogen (N) fertiliser is an efficient method for improving agricultural soil quality and yield. However, it also induces organic carbon (C) loss through mineralization. Soil microorganisms are involved in regulating the C cycle; however, microbial community keystone taxa to regulate mineralization their underlying factors orchard remain unclear. To address this, samples from apple were collected amended with wheat straw combined different levels of N (0 mg kg −1 , S; 200 S + RN; 300 CN; 500 HN), without any or as CK, incubated 110 days a laboratory. Wheat increased CO 2 efflux rate, especially supply, following order: HN > CN RN CK. The cumulative (C min ) under addition input higher than that At end incubation, treatments by 15.02% (S RN), 20.06% CN), 32.45% HN) compared treatment S. Straw relative abundance Actinobacteria Chloroflexi but decreased Acidobacteria, Myxococcota, Latescibacterota. co‐occurrence network indicated additional supply led simpler less complex networks straw. bacteria, Acidobacteria Latescibacterota, negatively correlated . Meanwhile, Entotheonellaeota bacterial phylum Basidiomycota fungal phyla positively application positive/negative links fungi. This indicates alleviated competitive interactions coupled dominated promotion Structural equation model analysis showed communities key enzyme activities induced reduction may be sustainable strategy mitigating soils.

Language: Английский

Nitrogen Addition Increases the Organic Residue‐Induced Carbon Mineralization by Shifting Soil Bacterial and the Fungal Community Structure and Co‐Occurrence Network DOI

Dongmei Lang,

Cheng Gong, Peng Zhang

et al.

Soil Use and Management, Journal Year: 2025, Volume and Issue: 41(2)

Published: April 1, 2025

ABSTRACT Organic residue plus nitrogen (N) fertiliser is an efficient method for improving agricultural soil quality and yield. However, it also induces organic carbon (C) loss through mineralization. Soil microorganisms are involved in regulating the C cycle; however, microbial community keystone taxa to regulate mineralization their underlying factors orchard remain unclear. To address this, samples from apple were collected amended with wheat straw combined different levels of N (0 mg kg −1 , S; 200 S + RN; 300 CN; 500 HN), without any or as CK, incubated 110 days a laboratory. Wheat increased CO 2 efflux rate, especially supply, following order: HN > CN RN CK. The cumulative (C min ) under addition input higher than that At end incubation, treatments by 15.02% (S RN), 20.06% CN), 32.45% HN) compared treatment S. Straw relative abundance Actinobacteria Chloroflexi but decreased Acidobacteria, Myxococcota, Latescibacterota. co‐occurrence network indicated additional supply led simpler less complex networks straw. bacteria, Acidobacteria Latescibacterota, negatively correlated . Meanwhile, Entotheonellaeota bacterial phylum Basidiomycota fungal phyla positively application positive/negative links fungi. This indicates alleviated competitive interactions coupled dominated promotion Structural equation model analysis showed communities key enzyme activities induced reduction may be sustainable strategy mitigating soils.

Language: Английский

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