1980
1985
1990
1995
2000
2005
2010
0
1
2
3
4
5
6
)
g
T
(
s
n
o
i
s
s
i
m
e
a
i
n
o
m
m
A
Year
Free-range
Intensive
Grazing
Fig. 2.6 Interannual variation in NH 3 emissions from livestock waste for three different rearing
systems. (This figure was adapted from Kang et al. 2016 under Creative Commons Attribution
License)
1980
1985
1990
1995
2000
2005
2010
0
2
4
6
8
10
12
Year
SyntheticFerlitizer Application
Livestock Wastes
Other Sources
)
g
T
(
s
n
o
i
s
s
i
m
E
a
i
n
o
m
m
A
Fig. 2.5 Interannual variation in total NH 3 emissions in China from 1980 to 2012; the sources of
the emissions were categorized as synthetic fertilizer application, livestock manure, and other
sources. (This figure was adapted from Kang et al. 2016 under Creative Commons Attribution
License)
2 Anthropogenic Emissions of SO 2 , NO x , and NH 3 in China
27