Over the 20-year period, GHG emissions, AP, and EP from the rice and maize production systems showed a decreasing trend, whereas the related impacts of the wheat production system showed an increasing trend.
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Menvironmental impacts of crop production systems in subtropical plateau regions: case study of Yunnan, China.
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The sentences
Over the 20-year period, GHG emissions, AP, and EP from the rice and maize production systems showed a decreasing trend, whereas the related impacts of the wheat production system showed an increasing trend.
The development potential of such systems is likely to be significant.