High-efficiency areas showed a trend of “decrease—increase—decrease” pattern and transferred to Beijing, Tianjin, Shanghai, and other areas with higher economic development levels. 3.2.
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Analysis of spatial and temporal characteristics of carbon emission efficiency of pig farming and the influencing factors in China.
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The sentences
The results show that: the carbon emission efficiency of pig farming in China shows an M-shaped upward trend over time by comparing the carbon emission efficiency longitudinally during the study period and the carbon emission efficiency of pig farming shows a decreasing trend in the east, central and west regions of China by comparing the carbon emission efficiency of different regions horizontally.