China's Grain - for - Green Program, the world's largest reforestation effort, has transformed 69.2 million acres of cropland and barren scrubland back to forest.
The government - backed effort, known as the Grain - for - Green Program, has transformed 28 million hectares (69.2 million acres) of cropland and barren scrubland back to forest in an effort to prevent erosion and alleviate rural poverty.