Energy-Dominated Local Carbon Emissions in Beijing 2007: Inventory and Input-Output Analysis

Table 3

Anthropogenic methane emissions by source.

Item	CH4 emission (t)	Fraction
(1) Agriculture activities	2.50𝐸+00	21.21%
Enteric fermentation	2.10𝐸+00	17.79%
Manure management	3.01𝐸−01	2.55%
Field burning of agricultural; residues	1.02𝐸−01	0.86%
(2) Fugitive emissions	2.77𝐸+00	23.46%
Coal mining	1.63𝐸+00	13.81%
Oil and natural gas systems	1.14𝐸+00	9.66%
(3) Fossil fuel combustion	1.69𝐸−01	1.43%
(4) Waste	6.36𝐸+00	53.90%
Municipal solid waste	5.37𝐸+00	45.48%
Industrial waste water	4.90𝐸−01	4.15%
Domestic sewage	5.03𝐸−01	4.26%
(5) Total	1.18𝐸+01	100.00%