Regeneration dynamics of mixed pine forests following surface fires: developing an ecosystem-based forest management strategy for Eastern Canada (PINEFIRE).

地表火灾后混合松林的再生动态：为加拿大东部制定基于生态系统的森林管理战略（PINEFIRE）。

• 批准号: 556815-2020
• 负责人: Bergeron, Yves
• 金额: $ 7.11万
• 依托单位: Université du Québec en Abitibi-Témiscamingue
• 依托单位国家: 加拿大
• 项目类别: Alliance Grants
• 财政年份: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=706549
• 关键词: Regeneration; dynamics; mixed; pine; forests

Before the arrival of European settlers, white and red pine forests were common throughout the southern boreal, temperate, and Great Lakes-St. Lawrence forest region. However, the cover and extent across their historic range has significantly declined, primarily due to changes in fire regime (suppression), unsustainable forest management practices, and introduced disease (white pine rust). Through collaboration with academic, governmental, and industry researchers and practitioners, the goal of this research project is to develop a sustainable management strategy for mixed and pure white and red pine forests located at the northern limit of their distribution, by emulating natural disturbance dynamics during commercial forestry practices to recreate similar conditions, thereby maintaining forest composition, structure, biological diversity and essential ecological functions. We will examine how surface fires, forest management, spruce budworm outbreaks, and white pine blister rust affect the regeneration response of white and red pine, and the structure and species composition of stands in forests dominated by these species. We will determine how these dynamics differ among naturally-disturbed, undisturbed, and harvested stands. These forest ecosystems are rich in biodiversity due to their wide range in age and structural diversity, are of significant economic value for timber, and of great cultural and spiritual value for indigenous communities. Our approach aims to restore and increase the distribution of mixed pine forests within their historical range, while supporting sustainable production of high-value timber in Eastern Canada. This knowledge can also be used to establish benchmarks for natural regeneration thresholds as part of various existing and novel management strategies; to develop or refine models of regeneration and succession; and to continue research on the potential effects of climate change on natural disturbance regime, species and ecosystem resilience, and adaptive capacity. The project results will improve the management of Canadian forest resources, contribute to the quantification of the future timber availability, and the development of sustainable forest management strategies in the face of climate change.

在欧洲定居者到来之前，白色和红色的松林在南部北部、温带和五大湖地区很常见--圣彼得堡。劳伦斯林区。然而，其历史范围内的覆盖率和范围已经显著下降，主要是由于火灾制度的变化(压制)、不可持续的森林管理做法以及引入的疾病(白松锈病)。通过与学术、政府和行业研究人员和从业人员的合作，本研究项目的目标是通过模拟商业林业实践中的自然干扰动态来模拟商业林业实践中的自然干扰动态，从而保持森林的组成、结构、生物多样性和基本的生态功能，从而为位于其分布的北部极限的白松和红松混交林制定可持续的经营战略。我们将研究地表火灾、森林管理、云杉芽孢虫暴发和白松水泡锈病如何影响白松和红松的更新反应，以及这些物种主导的森林中林分的结构和物种组成。我们将确定这些动态在自然干扰、未干扰和采伐林分之间有何不同。由于年龄和结构的多样性，这些森林生态系统具有丰富的生物多样性，对木材具有重要的经济价值，对土著社区具有重要的文化和精神价值。我们的方法旨在恢复和增加历史范围内的混交松林的分布，同时支持加拿大东部高价值木材的可持续生产。这些知识还可用于建立自然更新阈值的基准，作为各种现有和新的管理战略的一部分；开发或改进更新和演替模型；以及继续研究气候变化对自然干扰制度、物种和生态系统复原力和适应能力的潜在影响。该项目的成果将改善加拿大森林资源的管理，有助于量化未来的木材供应，并在面对气候变化的情况下制定可持续森林管理战略。