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Comparison of phosphorus transformation and microbial functional potential in aerobic and facultative composting of livestock and poultry manure

文献类型: 外文期刊

作者: Ma, Hongfang 1 ; Liu, Wenzu 1 ; Li, Jun 1 ; Wei, Yuquan 1 ; Zhan, Yabin 3 ; Tang, Kaiyan 1 ; Zhang, Yifan 1 ; Li, Ji 1 ; Wei, Zimin 4 ;

作者机构: 1.China Agr Univ, Coll Resources & Environm Sci, Beijing Key Lab Biodivers & Organ Farming, Beijing 100193, Peoples R China

2.China Agr Univ, Organ Recycling Inst Suzhou, Suzhou 215128, Peoples R China

3.Hubei Acad Agr Sci, Inst Plant Protect & Soil Fertilizer, Key Lab Fertilizat Agr Wastes, Minist Agr & Rural Affairs, Wuhan 430064, Hubei, Peoples R China

4.Tianjin Normal Univ, Coll Life Sci, Tianjin Key Lab Anim & Plant Resistance, Tianjin 300387, Peoples R China

关键词: Phosphorus fractions; Aerobic composting; Facultative composting; Functional genes; Microbial community

期刊名称:ENVIRONMENTAL RESEARCH ( 影响因子:7.7; 五年影响因子:7.7 )

ISSN: 0013-9351

年卷期: 2025 年 285 卷

页码:

收录情况: SCI

摘要: This study compared phosphorus (P) transformation, microbial succession, and functional gene dynamics during facultative and aerobic composting of pig and chicken manures, using 16S rRNA sequencing and PICRUSt2-based functional prediction. The results showed that, compared to facultative composting, aerobic composting increased thermophilic-phase temperature, reduced electrical conductivity, and improved the germination index (GI), indicating better maturity and lower phytotoxicity. Aerobic composting significantly enhanced total P (TP) accumulation (Pig manure, p < 0.001; Chicken manure, p < 0.05) and plant-available fractions (H2O-P and NaHCO3-P), whereas facultative composting favored the formation of more stable, less bioavailable fractions (NaOH-P and HCl-P). Aerobic treatments also induced more dynamic microbial shifts, complex networks, and higher expression of key genes (phoA, PHO, gcd, mdh), whereas facultative conditions upregulated high-affinity phosphate transporter genes (pstA, pstB, pstC). Correlation analysis revealed that P-cycling functional genes were closely associated with GI, TP, and labile P fractions, with stronger microbe-environment-function coupling observed under aerobic composting. These findings highlight mechanistic differences in P mobilization between facultative and aerobic treatments, which provide insights for optimizing manure composting for enhanced P recovery.

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