Wildfires in the Valparaiso region (Chile) account for one of the main threats to local biodiversity, ecosystem services and infrastructure. This study focused on producing an initial record of thermo- and physicochemical properties of local forest species. For this purpose, leaf samples of species found in the Penuelas Lake National Reserve, namely Pinus radiata, Eucalyptus globulus, Acacia dealbata, Quillaja saponaria and Cryptocarya alba, were collected and analysed. Higher and lower heating value, flash point, density and moisture content tests were performed for each sample. Overall results showed that lower heating values measured for both native and exotic species could indicate a high energy release source in wildfires. However, differences in the flash point between species indicated that C. alba and E. globulus had a lower ignition resistance than other species tested, possibly due to a lower flash point. In contrast, Q. saponaria and A. dealbata had the highest flash point for native and exotic species respectively. Finally, all presented data and procedures were aimed at establishing a foundation for a national database of critical forest species properties to be used in wildfire simulation tools. This database will enhance forest fire management effectiveness in Chile.

中文翻译：

---

智利瓦尔帕莱索本地和外来森林物种的热和物理化学特性，作为火灾风险管理的重要信息

瓦尔帕莱索地区（智利）的野火是当地生物多样性、生态系统服务和基础设施面临的主要威胁之一。这项研究的重点是产生当地森林物种的热和物理化学特性的初始记录。为此，收集并分析了在 Penuelas 湖国家保护区发现的物种的叶子样本，即辐射松、蓝桉、金合欢、皂树和白桦。对每个样品进行更高和更低的热值、闪点、密度和水分含量测试。总体结果表明，对本地和外来物种测得的较低热值可能表明野火中的能量释放源较高。然而，物种之间闪点的差异表明 C. alba 和 E. globulus 比其他测试的物种具有较低的耐燃性，可能是由于较低的闪点。相比之下，Q. saponaria 和 A. dealbata 分别具有最高的本地和外来物种的闪点。最后，所有提供的数据和程序旨在为用于野火模拟工具的关键森林物种特性国家数据库奠定基础。该数据库将提高智利的森林火灾管理效率。