PARIS — History keeps repeating itself in the smoldering forests of southwest France, now ash-covered and charred. Devastated by previous blazes in 2022 and 1949, when 82 people died, the largest human-made woodland in Western Europe has again been ravaged by wildfires which burned an area four times the size of Paris. The forests of Les Landes — covering 10,000 square kilometers (3,860 square miles) — were created in the 19th century for timber and resin production. They comprise endless rows of pines in neat, close lines, which works against them in a wildfire, with flames jumping easily from one tree to another. …President Emmanuel Macron said a different kind of forest should be replanted. …Single-species forests of conifers are drier than mixed forests of broadleaf trees and conifers, favoring flames. …In Les Landes, that layered structure does not exist.