Analysis of regional differences and spatial spillover effects of agricultural carbon emissions in China.

And the years after that have shown an increasing trend, so there is no σ convergence in the northeast region during this period until 2019, when the σ value decreases.

also in 63,971 other papers

If the deviation of ACE in each region shows a decreasing trend over time, then ACE show σ convergence.

also in 47,180 other papers