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Updated: Jan 8, 2026

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

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Published on: October 7, 2020

评估空气化速率调节以重组脱剂社区,以减轻牛堆肥中的氧化,使用一种新的综合分析框架

Yu Sun¹, Xiran Zhou¹, Jiaming Fan¹

¹School of Resources and Environment, Northeast Agricultural University, Harbin, 150030, China.

Journal of environmental management

|December 18, 2025

概括

在牛堆肥中优化空气化可以显著减少氧化 (N2O) 排放. 0.2 L kg-1 DM·min-1 的通风率是最大限度地减少这种强大的温室气体,同时确保堆肥成熟的理想条件.

科学领域:

环境科学环境科学
微生物学微生物学
农业科学农业科学

背景情况:

牲畜便的堆肥是氧化 (N2O) 的主要来源,这是一个强大的温室气体.
众所周知,透气可缓解无氧条件,但其对通过微生物通道对N2O排放的具体影响需要澄清.

研究的目的:

调查不同通风速率对牛堆肥过程中N2O排放,酶活性和脱剂群体的影响.
通过使用综合分析框架,阐明气化,微生物通路和N2O缓解之间的机械联系.

主要方法:

堆肥实验进行了三个通风率:0.1 (AR1),0.2 (AR2) 和0.3 L kg-1 DM·min-1 (AR3).
使用了一种新的综合分析框架 (NIAF),结合冗余,斯皮尔曼,网络,曼特尔和路径分析.
测量包括N2O排放,酶活动和nirK基因脱剂社区结构.

主要成果:

0.2 L kg-1 DM·min-1 (AR2) 的最佳通风率减少了75.25%的N2O排放,并确保了堆肥的成熟度.
峰值N2O排放发生在中性阶段,与酸盐积累有很强的相关性.
根据NIAF的分析,AR2通过抑制关键的N2O生产基因,降低酸盐减少酶活性和增强脱剂相互作用来减轻N2O.

结论:

0.2 L kg-1 DM·min-1 的通风率是最小化牛堆肥中N2O排放的最佳,同时实现堆肥成熟度.
微生物调节途径,包括抑制特定的属和增强的脱剂相互作用,是N2O在最佳通风条件下减轻的关键.
这项研究为精确的通风控制提供了微生物生态蓝图,以减少堆肥产生的温室气体排放.

关键词:

一个新的综合分析框架.气化速率气化速率气化速率气化速率堆肥化堆肥化堆肥化无化器是一种无化剂.氧化氧化是什么?

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