Centro de Ecologia Aplicada Prof. Baeta Neves, Institute of Agronomy, Technical University of Lisbon, Tapada da Ajuda, 1349-017 Lisbon, Portugal.
J Environ Manage. 2011 Oct;92(10):2389-402. doi: 10.1016/j.jenvman.2011.06.028. Epub 2011 Jul 8.
Every year approximately half a million hectares of land are burned by wildfires in southern Europe, causing large ecological and socio-economic impacts. Climate and land use changes in the last decades have increased fire risk and danger. In this paper we review the available scientific knowledge on the relationships between landscape and wildfires in the Mediterranean region, with a focus on its application for defining landscape management guidelines and policies that could be adopted in order to promote landscapes with lower fire hazard. The main findings are that (1) socio-economic drivers have favoured land cover changes contributing to increasing fire hazard in the last decades, (2) large wildfires are becoming more frequent, (3) increased fire frequency is promoting homogeneous landscapes covered by fire-prone shrublands; (4) landscape planning to reduce fuel loads may be successful only if fire weather conditions are not extreme. The challenges to address these problems and the policy and landscape management responses that should be adopted are discussed, along with major knowledge gaps.
每年,大约有 50 万公顷的土地在南欧被野火烧毁,造成了巨大的生态和社会经济影响。过去几十年的气候和土地利用变化增加了火灾的风险和危险。本文回顾了地中海地区景观与野火之间关系的现有科学知识,重点探讨了将其应用于定义景观管理准则和政策的可能性,以便促进具有较低火灾危险的景观。主要结论是:(1)社会经济驱动因素有利于土地覆盖的变化,这导致了过去几十年中火灾危险的增加;(2)大型野火变得更加频繁;(3)火灾频率的增加促进了覆盖易燃灌丛的均质景观;(4)只有在火灾天气条件不极端的情况下,减少燃料负荷的景观规划才可能成功。本文讨论了应对这些问题的挑战以及应采取的政策和景观管理对策,同时还探讨了主要的知识空白。