酸盐对温室气体释放的影响以及猪堆肥过程中微生物群落的变化
Mengxiang Zhao1, Yongzhen Ding2, Yilang Qin1
1College of Natural Resources and Environment, Northwest A&F University, Yangling, 712100, PR China.
Journal of environmental management
|December 4, 2024
概括
将酸盐添加到猪堆肥中通常会增加氧化 (N2O) 和氨 (NH3) 的排放. 然而,特定剂量2毫克-1千克酸盐减少了甲 (CH4) 排放,改善了堆肥成熟度.
科学领域:
- 农业科学 农业科学
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 与酸盐共同堆肥牲畜便可以产生富含的有机肥.
- 酸盐在堆肥过程中对温室气体 (GHG) 排放的影响在很大程度上仍未得到研究.
研究的目的:
- 研究不同酸盐度对温室气体排放 (N2O,NH3,CH4) 和猪堆肥过程中微生物群落动态的影响.
- 评估酸盐对堆肥成熟度和全球变暖潜力的影响.
主要方法:
- 猪和小麦的有氧堆肥80天,使用酸盐剂量从0到5毫克每公斤-1.1.
- 量化N2O,NH3和CH4排放的量化.
- 使用分子技术分析微生物社区结构.
- 对堆肥成熟度指标和GWP的评估.
主要成果:
- 酸盐通常会增加N2O和NH3的排放.
- 甲 (CH4) 排放量分别减少了39.60%和13.75%的2毫克千克-1和5毫克千克-1酸盐,而其他度则产生了相反的效果.
- 添加2毫克的kg-1酸盐显著降低了GWP,并提高了堆肥成熟度.
- 微生物分析表明,2 mg kg-1 酸盐促进了微生物的丰富性和多样性,可能会影响诸如蛋白质细菌和Chloroflexi之类的关键族群降低GWP.
结论:
- 在猪堆肥过程中使用酸盐对温室气体排放有复杂的影响,特定剂量 (2 mg kg-1) 显示出潜在的益处.
- 优化酸盐剂量可以减轻GWP并提高堆肥质量,为可持续化肥生产提供战略.
- 微生物社区的转移在调解酸盐对温室气体排放和堆肥成熟度的影响方面发挥着至关重要的作用.
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