that is old news the forest regrowth itself after natives were depopulated by diseases(most died even before they seen white man as waves of plagues and diseases spread far and wide repeatedly even before any colony get created) natives used fire to control forest and make it more productive in means of hinting and agroforestry but when they died of in great numbers they couldn't maintain it and so it regrowth  and fresh wave of euros brought new methods of agriculture and land management
United Kingdom