Figure 2

Gridded emission patterns in China from 1950 to 2010 at a resolution of 1/6° latitude × 1/4° longitude32. The maps were drawn by the software of Surfer 9.0, http://www.goldensoftware.com/.

Gridded emission patterns in China from 1950 to 2010 at a resolution of 1/6° latitude × 1/4° longitude32. The maps were drawn by the software of Surfer 9.0, http://www.goldensoftware.com/.