One of the most important measures to prevent wild forest fires is the use of prescribed and controlled burning actions as it reduce the fuel mass availability. The impact of these management activities on soil physical and chemical properties varies according to the type of both soil and vegetation. Decisions in forest management plans are often based on the results obtained from soil-monitoring campaigns. Tho...
Portugal, as well as the Mediterranean basin, is favorable to the occurrence of forest fires. In this work a statistical analysis was carried out based on the official information, considering the forest fires occurrences and the corresponding burned area for each of the districts of the mainland Portugal, between 1996 and 2010. Concerning to the forest fires occurrence it was possible to identify three main re...
One of the most important measures to prevent wild forest fires is the use of prescribed and controlled burning actions as it reduce the fuel mass availability. The impact of these management activities on soil physical and chemical properties varies according to the type of both soil and vegetation. Decisions in forest management plans are often based on the results obtained from soil-monitoring campaigns. Tho...
Portugal, as well as the Mediterranean basin, is favorable to the occurrence of forest fires. In this work a statistical analysis was carried out based on the official information, considering the forest fires occurrences and the corresponding burned area for each of the districts of the mainland Portugal, between 1996 and 2010. Concerning to the forest fires occurrence it was possible to identify three main re...
The development and implementation of measures which promote the reduction of the impacts of forest fires on soils is imperative and should be part of any strategy for forest and soil preservation and recovery, especially considering the actual scenario of continuous growth in the number of fires and burnt area. Consequently, with the dendrocaustologic reality that has characterized the Portuguese mainland in r...
Em janeiro de 2014, dando seguimento à intenção manifestada em novembro de 2013 no VII Encontro de Geografia Física e Ambiente realizado em Guimarães, a RISCOS (Associação Portuguesa de Riscos, Prevenção e Segurança), criou as condições para a constituição de uma secção/rede temática dedicada ao estudo dos efeitos dos incêndios nos solos - Rede nacional para o estudo dos Incêndios florestais e seus efeitos nos ...
The main goal of this study is to analyse the most important causes affecting fire ignitions in Portugal mainland, between 1996 and 2010. The forest fire database was provided by the Portuguese Government Forest Services (National Forest Authority, AFN), that group the causes in six main categories (negligent usage of fire, accidental, structural causes, incendiary, natural and unknown). The analysis of the ca...
Uma das consequências dos incêndios florestais é o aumento da erosão da camada superior dos solos, onde se localizam, na maioria dos solos portugueses, os únicos nutrientes existentes. Num clima com características mediterrâneas, como é o caso do português, a máxima exportação dos sedimentos acontece, normalmente, nos primeiros 4 a 6 meses depois dos incêndios. Assim, o projeto Soil Protec1 (Medidas de Emergênc...
Os incêndios florestais constituem, em Portugal continental, o mais relevante problema ambiental e, frequentemente, têm sido explicados pelas características climáticas e meteorológicas do nosso território, por estas afetarem tanto o desenvolvimento como a inflamabilidade dos combustíveis. Todavia, o perfil do clima português, mediterrâneo, não justifica, por si só, nem o elevado número de ignições, nem a vasta...
Embora o fogo tenha moldado os ecossistemas Mediterrâneos, os regimes de ocorrência de fogo, isto é, a sua frequência e intensidade, modificaram-se, tendo contribuído para um cenário onde os incêndios se tornaram não só mais prováveis de ocorrer, mas também mais difíceis de extinguir. Em Portugal, o número dos grandes incêndios florestais (≥100ha), ainda que seja estatisticamente irrelevante quando comparado co...
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