Southwestern France is once again grappling with widespread wildfires that have charred vast swathes of the Les Landes forest, the largest human-made woodland in Western Europe. This latest disaster, which burned an area four times the size of Paris, follows significant blazes in 2022 and a deadly fire in 1949. The recurring devastation is prompting a national reassessment of forest management practices in light of escalating climate change.
The Les Landes forests, spanning 10,000 square kilometers, were established in the mid-19th century primarily for timber and resin production. They consist largely of maritime pine trees planted in dense, uniform rows, a structure that facilitates the rapid spread of flames. Experts note that while maritime pines possess some natural fire resistance due to their thick bark and regenerative capabilities, their monoculture exacerbates risk.
"The structural conditions created by climate change, under which we will have to live, have changed," French President Emmanuel Macron stated, emphasizing the need for a different approach to replanting. He also highlighted increased pressure from housing and tourism as contributing factors.
Forestry experts point out that single-species conifer forests, like much of Les Landes, are drier and more prone to burning than mixed forests that include broadleaf species. Nathalie Naulet, an expert in forestry and agriculture, explained that diverse forests with multiple tree species, varied age classes, and layered vegetation from ground cover to mature trees allow less than 3% of sunlight to reach the forest floor. In contrast, the lack of such a canopy in Les Landes allows the soil to dry out, diminishing its humus content and making it more susceptible to ignition. Resinous pine cones can also ignite and be carried by wind, further spreading fires.
The historical development of Les Landes involved draining marshland and planting pines, a process mandated by a law in 1857. This transformation displaced traditional pastoralism and farming, leading to a forest primarily managed for timber. Today, over 90% of the forest is privately owned, supporting an estimated 60,000 jobs and generating significant revenue.
Addressing the issue requires extensive negotiations among the timber industry, private landowners, and public authorities. Proposals for change include creating buffer zones around settlements with less fire-prone elements like wetlands or farmland, and incorporating more broadleaf trees into the landscape. However, transforming the entire forested area is a complex and costly undertaking, especially on the region's often poor soils.
"Forest owners reject any attempt to portray them as being responsible for a disaster of which they are the primary victims," said Nicolas Lafon, president of the Southwest Foresters’ Association. He called for a comprehensive and long-term national forest policy from the government and public stakeholders.
Calls for enhanced wildfire prevention measures include the establishment of larger, well-maintained firebreaks, even if it means sacrificing some forested areas. The recent fires have also sparked discussions about wildlife protection, with an online petition advocating for a hunting moratorium in burned areas gaining significant traction.