Why did the largest tree-planting programme ever attempted start swapping trees for grass on its driest slopes, after 10 million hectares of one fast-growing species drained the soil dry several metres down?

{"content":" The Loess Plateau covers about 640,000 square kilometres of north-central China — an area roughly the size of France — and for most of the twentieth century it was the single most erode The post Why did the largest tree-planting programme ever attempted start swapping trees for grass on its driest slopes, after 10 million hectares of one fast-growing species drained the soil dry…