江苏省农业源甲烷排放清单研究

根据农业源甲烷排放的活动数据和排放因子,采用IPCC(2006)推荐的排放系数法对2009年江苏省农业源甲烷排放量进行估算。结果显示,2009年江苏省农业源甲烷排放总量为990.348Gg,其中,水稻种植是江苏省最大的甲烷排放源,年排放量为829.577Gg,占全省总排放量的83.77%;畜禽养殖和秸秆燃烧甲烷排放较少,占甲烷排放总量的14.54%和1.69%。江苏省农业源甲烷排放平均强度为9.63t/km2.a,甲烷排放强度超过12t/km2.a的城市分别是扬州、淮安、南通市和泰州市,排放强度分别为13.88t/km2.a、13.52t/km2.a、13.48t/km2.a和12.29t/km2.a。

Study on Agriculture Methane Emission Inventory in Jiangsu Province

Based on the collected activity data and emission factors of agriculture methane source,we estimated the agriculture methane emission inventory in Jiangsu Province,using the emission coefficient method recommended by IPCC(2006).The results show that in this province,the total amount of the methane emissions from agriculture source had reached 990.348Gg in 2009,in which the rice cultivation was the largest contributor with a total emissions of 829.577Gg accounting for 83.77%.Relatively,livestock and straw burning released less methane which contributed only about 14.54% and 1.69 % to the total emissions,respectively.What is more,the average methane emission intensity in Jiangsu was 9.63 t/km2·a,and some cities had contributed a larger part to the total emissions,for example,in Yangzhou,Huai’an,Nantong and Taizhou,the emission intensity of methane all exceeded 12.00 t/km2·a,with the intensity of 13.88 t/km2·a,13.52 t/km2·a,13.48 t/km2·a and 12.29 t/km2·a,respectively.