Fig. 1
From: A large carbon sink induced by the implementation of the largest afforestation program on Earth
The spatial location of the TNAP and the four subzones in the Three-North regions (TNR). Three-North means the Northeast, the North Central and the Northwest of China. There are four subzones, i.e., Northeast, North Central, Loess Plateau and Northwest. The initially scheduled scope was 4.069 × 106 km2, spanning almost all of the country’s arid and semiarid regions, and is planned to last until 2050