The drawing is bleak. If you open Google Mapsactivate the “fire” function And you take a look at the map of Spain you will see that much of the flames that are devouring the mountain of the country (and some populated areas) seem to concentrate on a particular ‘triangle of fire’ between the provinces of Ourense, León and Zamora. There are the fires of Mozyuelas de la Caballea, Yeres or that of Queixa Chandrexawhich have already razed thousands and thousands of hectares.
It is not the only region of Spain punished by the flames, but the big question is … Why do forest fires seem to be primed right in that region?
The Spain that burns. It is not being a good August for the mountains of the country. According to The last report of the Ministry of Environment (Miteco), still incomplete because its technicians do not have the data of the large active fires, so far this year the flames have devastated 138,800 ha. And that is the calculation to August 10, so it does not include the devastated surface during the last week.
To better understand what this data is, remembering that between January and the first week of September 2024 the forest fires burned 43,655 ha or that throughout 2023 they had calcined 89,000. If we look back, at the last decade, there was only one more disastrous exercise than the current one: 2022, when at this point of the year they had burned Around 215,000 hectares.
Is the whole country the same? No. The flames have punished to a greater or lesser extent Andalusia, Estremadura, Castilla-La Mancha, Catalonia and the regions of Valencia and Madridto quote only some examples, but there is a specific area of the Peninsula that is suffering from the dentelladas of the fire with special virulence: the triangle formed by the provinces of Ourense, León and Zamora.
Tan a Fast look To Google Maps to check it. There is Chandrexa de Queixa, which has affected more than 17,000 ha And it is already considered The most destructive of the history of Galicia. Also that of Mozyuelas de la Carballedathat passed from Zamora to León and has calcined several dozens of hectares.
Looking for the causes. The big question is … why do that region hit so much fury? What are the causes? The question is interesting because it is not an isolated phenomenon: there are populations, like Castromil’sbetween Ourense and Zamora, who have resigned themselves to deal with fire every year.
For the impact of the flames on the ‘triangle’ between Zamora, León and Ourense He wondered Recently in X Francisco M. Azcárate, professor of ecology, biology and environmental sciences. And its entry response is interesting: the succession of forest fires in that region of the Peninsula cannot be attributed to pyologists or negligence. Or that is not the only cause at least.
In the background there are more complex structural reasons that have to do with the characteristics of that area or changes in the use of the territory.
Meteorology earrings. “Climatically, the area fits perfectly with ecosystems that, naturally, have a high frequency of important fires,” Azcárate starts Before aiming the influence of the rainy season, during which biomass accumulates, and dry, marked by the mass of dry and very flammable vegetation. To this factor is added the frequency of fires in humid Mediterranean climates or the effect of climate change, which influences extreme temperatures and “extends the risk season.”
The fire wave has in fact coincided with Another heat which began in early August and that already stands out as one of The most durable Since at least the 70s, which is when the historical Aemet starts.
Although it is not an inflexible guideline, experts have not been warning that the fight against forest fires is especially complex when the known as the known as ‘Rule 30-30-30’: Temperatures above 30ºC, wind gusts of more than 30 km/Hy a humidity of less than 30%.
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The perfect cocktail. Not only do climatic conditions or heat wave influence, which has spread far beyond the Ourean-Leon-Zamora triangle. Another of the keys that explains the impact of fires in that concrete area of the Peninsula must be sought, Azcárate points out, on the ground and orography. “The region has acidic and little fertile soils. This favors more flammable plant communities, due to the composition of plants’ tissues,” The expert reflects.
At stake also enters the orography of that region, marked by an “abrupt relief” that hinders the access of “erratic and strong” seals that can abruptly change the direction of the flames. A few years ago Civio analyzed The main fires recorded in Spain throughout the 2007-2016 decade and discovered that in almost 80% of cases (153 of 196) the gusts exceeded 30 km/h, which could influence the evolution of fire.
Something more than weather and orography. Not everything is climate, meteorology, orography or soil characteristics. In the fires it is influencing another factor than You are talking a lot During the last days: the depopulation of the rural one (which is usually accompanied by the abandonment of fields and a change in forest management), something that starts from the provinces of Ourense, Zamora and León They know well.
“In general in Spain there has been rural, population and peoples abandonment and depopulation is a food for fires,” Celso Coco warnsfire expert and forest management in The opinion-the mail of Zamora.
And what does that suppose? “The consequence is that in those areas where it was worked, it was grown, it was granted, natural vegetation has been installed and there is no use of them, which has increased the forest area greatly. This continuity of vegetation, without management, results in a vulnerable landscape,” duck.
In their opinion, forest fires “have existed, exist and exist” and constitute “a natural process”, but changes in the landscape have affected their impact: where they were previously found with land of discontinuous vegetation due to grazing, there are now continuous extensions.
Azcárate duck Another extra factor: for years the management of the territory, he explains, has been “very influenced” by an approach that extol “forest climax”, the presence of abundant vegetation. The areas without trees were considered degraded. And that, as is being checked in the northwest, is a challenge when the fire arrives. “Forestry ended continuously without being aware of its risks.”
Images | Google Maps and Ministry of Defense (x) 1 and 2
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