Manure matters
Nature Geoscience
2009년8월31일
Manure production has been a key driver of increasing concentrations of nitrous oxide ― the fourth most important greenhouse gas produced by human activity ― since 1860, according to a study published online in Nature Geoscience.
Atmospheric concentrations of nitrous oxide ― also known as laughing gas ― have risen significantly since the industrial revolution. Eric Davidson uses a model to examine the sources of nitrous oxide emissions. He shows that an increase in animal manure production explains a large proportion of the increase in nitrous oxide over the last century and a half.
He concludes that, given the increasing global demand for meat, nitrous oxide emissions from manure must be managed.
doi: 10.1038/ngeo608
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