ABSTRACT Forest fires are an important factor shaping Mediterranean ecosystems and determine the distribution of different species. Information about past forest fires can be obtained with pyrodendroecology. Here, we present a fire history for three sites in the mountain forest belt on the island of Corsica in the Mediterranean Basin. The dating of scars from cores, stem discs, and wedges from 101 pine trees (Pinus nigra and Pinus pinaster) allowed the reconstruction of six definite fire events between 1800 and 2017. Additionally, we reconstructed the spatial extent of a large fire event at AD 2000 with remote sensing data. The study sites are affected by different types of fires. The even-aged forest structure at two sites is clear evidence of past lethal fires, whereas the old-growth Pinus nigra forest at the third site represents the final stage of succession under current climate conditions. The current distribution of both pine species can at least partly be regarded as a result of varying fire frequency at different sites. Although Pinus pinaster stands dominate in areas with frequent fires and can even replace Pinus nigra in cases of high fire frequency, Pinus nigra dominates in areas with low fire frequencies.

中文翻译：

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中科西嘉/法国的树木生态火灾史

摘要 森林火灾是塑造地中海生态系统的重要因素，并决定了不同物种的分布。过去森林火灾的信息可以通过焦化树生态学获得。在这里，我们展示了地中海盆地科西嘉岛上山林带中三个地点的火灾历史。对 101 棵松树（黑松和松树）的核、茎盘和楔子的疤痕进行年代测定，可以重建 1800 年至 2017 年间发生的六次确定的火灾事件。此外，我们重建了公元 100 年大型火灾事件的空间范围2000 年有遥感数据。研究地点受到不同类型火灾的影响。两个地点的平均年龄森林结构是过去致命火灾的明确证据，而第三个地点的古老黑松林代表了当前气候条件下演替的最后阶段。两种松树目前的分布至少可以部分地被视为不同地点火灾频率不同的结果。虽然松树在火灾频繁地区占主导地位，甚至可以在火灾频率高的情况下取代黑松，但在火灾频率低的地区，黑松占优势。