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Linjie Ma¹, Chengxin Zhang¹, Baoli Qin¹

¹Jiangsu Lixiahe District Institute of Agricultural Sciences, Yangzhou, 225007, PR China.

Journal of environmental management

|October 28, 2025

概括

通过改变土壤微生物,生物炭的应用显著减少了大米-鱼系统中的甲 (CH4) 排放. 这项研究表明,在综合农业系统中,生物炭的应用是减轻温室气体排放的可行策略.

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:

田的甲 (CH4) 排放是大米单一栽培的一个重大问题.
生物炭对大米-鱼综合系统 (RCS) 中的CH4排放的影响尚不清楚.
像RCS这样的综合系统为提高农业生产率和环境效益提供了潜力.

研究的目的:

调查生物炭应用对RCS中CH4排放的影响.
分析生物炭对土壤化学性质和微生物群落 (甲原体和甲类生物) 的影响.
确定生物炭在这个特定的农业系统中减轻CH4排放的机制.

主要方法:

一个为期两年的实地实验是在中国江苏省高雄市进行的.
在RCS中,生物炭每年应用于低 (7.5t ha-1) 和高 (15t ha-1) 率.
监测了CH4排放,土壤特性,以及甲基因 (mcrA基因) 和甲基因 (pmoA基因) 的丰度和社区结构.

主要成果:

生物炭的应用显著减少了每年的CH4排放量33.6-43.5%,以及来自大米和鱼来源的CH4强度.
减少CH4排放与甲素丰度 (mcrA) 降低和甲类丰度 (pmoA) 增加有关.
生物炭的应用积极改变了土壤的特性,包括增加了氧化还原潜力,pH,和酸盐,并减少了溶解的有机碳,与微生物变化相关.

结论:

生物炭应用是一种有效的策略,用于减轻大米-鱼综合系统中的CH4排放.
缓解机制涉及生物炭诱导的土壤化学变化,这些变化随后改变了社区结构和甲原体和甲类植物的丰富性.
研究结果强调了生物炭在可持续农业和复杂农业系统中减少温室气体的潜力.

关键词:

生物炭是一种生物炭.甲排放排放量甲排放量甲基生物是一种甲基生物.甲醇养动物 (甲醇养动物) 是一种甲醇养动物.米-鱼综合系统综合系统

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