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
第一作者： Ma, Hongfang
作者： Ma, Hongfang;Liu, Wenzu;Li, Jun;Wei, Yuquan;Tang, Kaiyan;Zhang, Yifan;Li, Ji;Ma, Hongfang;Li, Jun;Wei, Yuquan;Tang, Kaiyan;Li, Ji;Zhan, Yabin;Wei, Zimin
作者机构：
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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