Methane emissions during storage of di erent treatments fromcattle manure in Tianjin
Jiajun Wang , Chiqing Duan , Yaqin Ji , Yichao Sun
DOI:
Received November 16, 2009,Revised May 05, 2010, Accepted , Available online
Volume 22,2010,Pages 1564-1569
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Many studies on methane emissions from animal manure have revealed that animal manure is a major source of methane emissions
to the atmosphere that can have negative consequences for people, animals and environment. In general, the release of methane can
be influenced by the type of feed taken by animals, temperature, manure characteristics and so on. This study aimed at quantifying
and comparing methane release from dairy manure with di erent piling treatments. Four treatments were designed including manure
piling height 30, 45, 60 cm and adding 6 cm manure every day until the piling height was 60 cm. Static chamber method and gas
chromatography were adopted to measure the methane emissions from April to June in 2009. Methane emission rates of all four
manure treatments were low in the first week and then increased sharply until reaching the peak values. Subsequently, all the methane
emission rates decreased and fluctuated within the steady range till the end of the experiment. Wilcoxon nonparametric tests analysis
indicated that methane emission rate was greatly influenced by manure piling height and manner. There were no significant relationships
between methane emission rates and the temperatures of ambience and heap. However, regression analysis showed that the quadratic
equations were found between emission rates of all treatments and the gas temperature in the barrels.
