27 Scenario Analysis of Environmental Impact of Paddy Rice …
425
Fig. 27.7 Comparing greenhouse gases (GHG) emissions from three scenarios
Fig. 27.8 Comparing acidification gas (AG) emissions from three scenarios
with the T-N and T-P loss potentials being considerably higher in both scenarios
involving manure.
The results show that the environmental impacts were particularly high in the
scenarios in which manure was added. In particular, manure application to the paddy
rice farming system led to greatly increased emissions of N 2 O and CH 4 , two gases
which play major roles in climate change because of their high global warming
potentials. Because the proportion of nutrients is lower in manure compared with
425
Fig. 27.7 Comparing greenhouse gases (GHG) emissions from three scenarios
Fig. 27.8 Comparing acidification gas (AG) emissions from three scenarios
with the T-N and T-P loss potentials being considerably higher in both scenarios
involving manure.
The results show that the environmental impacts were particularly high in the
scenarios in which manure was added. In particular, manure application to the paddy
rice farming system led to greatly increased emissions of N 2 O and CH 4 , two gases
which play major roles in climate change because of their high global warming
potentials. Because the proportion of nutrients is lower in manure compared with