Department of Agroforestry Technology, Science and Genetics, School of Advanced Agricultural and Forestry Engineering, Castilla La Mancha University, Campus Universitario s/n, E-02071 Albacete, Spain.
AGRARIA Department, Mediterranean University of Reggio Calabria, Località Feo di Vito, I-89122 Reggio Calabria, Italy.
Sci Total Environ. 2022 Apr 1;815:152894. doi: 10.1016/j.scitotenv.2021.152894. Epub 2022 Jan 5.
Eco-engineering techniques are generally effective at reducing soil erosion and restore vegetal cover after wildfire. However, less evidence exists on the effects of the post-fire eco-engineering techniques to restore plant diversity. To fill this knowledge gap, a standardized regional-scale analysis of the influence of post-fire eco-engineering techniques (log erosion barriers, contour felled log debris, mulching, chipping and felling, in some cases with burning) on species richness and diversity is proposed, adopting the Iberian Peninsula as case study. In general, no significant differences in species richness and diversity (Shannon) were found between the forest treated with different post-fire eco-engineering techniques, and the burned and non-treated soils. Only small significant differences were found for some sites treated with log erosion barriers or mulching. The latter technique increased species richness and diversity in some pine species and shrublands. Contour felled log debris with burning slightly increased vegetation diversity, while log erosion barriers, chipping and felling were not successful in supporting plant diversity. This research will help forest managers and agents in Mediterranean forest to decide the best postfire management option for wildfire affected forest, and in the development of more effective post-fire strategies.
生态工程技术通常可有效减少土壤侵蚀，并在野火后恢复植被覆盖。然而，关于火灾后生态工程技术对植物多样性恢复的影响的证据较少。为了填补这一知识空白，提出了一种标准化的区域尺度分析，以评估火灾后生态工程技术（原木侵蚀障、等高伐倒原木碎片、覆盖物、碎木和砍伐，在某些情况下进行燃烧）对物种丰富度和多样性的影响，伊比利亚半岛作为案例研究。一般来说，不同火灾后生态工程技术处理的森林与燃烧和未经处理的土壤之间的物种丰富度和多样性（香农）没有显著差异。仅在一些使用原木侵蚀障或覆盖物处理的地点发现了一些小的显著差异。后一种技术增加了一些松树和灌丛物种的物种丰富度和多样性。带有燃烧的等高伐倒原木碎片略微增加了植被多样性，而原木侵蚀障、碎木和砍伐在支持植物多样性方面并不成功。这项研究将有助于地中海森林的森林管理者和代理人为受野火影响的森林做出最佳的火灾后管理选择，并有助于制定更有效的火灾后策略。
