Thompson A G, Wagner-Riddle C, Fleming R
Department of Land Resource Science, Guelph, Ontario, Canada.
Environ Monit Assess. 2004 Feb;91(1-3):87-104. doi: 10.1023/b:emas.0000009231.04123.2d.
Composted organic wastes have been shown to reduce emissions of N2O and CH4, but little is known about the release of these gases during the composting process. This research examined the emissions of N2O and CH4 during the composting of liquid swine manure and wheat straw at two operations, one with forced aeration and the other without. The lack of aeration increased CH4 emissions to 24 times that of composting with aeration, but had no significant effect on N2O production. When total N2O and CH4 emissions from composting were compared with liquid swine manure emissions, aerated composting was found to reduce emissions to as low as 30% of those from liquid manure storage, while non-aerated composting elevated emissions up to an estimated 330% of liquid manure storage.
堆肥有机废物已被证明可减少一氧化二氮（N₂O）和甲烷（CH₄）的排放，但对于这些气体在堆肥过程中的释放情况却知之甚少。本研究考察了在两个养殖场中，液态猪粪与小麦秸秆堆肥过程中N₂O和CH₄的排放情况，其中一个养殖场采用强制通风，另一个则不通风。不通风使CH₄排放量增至通风堆肥的24倍，但对N₂O的产生没有显著影响。当将堆肥过程中N₂O和CH₄的总排放量与液态猪粪的排放量进行比较时，发现通风堆肥可将排放量降低至液态粪便储存排放量的30%，而不通风堆肥则使排放量增至液态粪便储存排放量的约330%。
