College and university campuses comprise a unique urban interface. Property used to establish the University of West Florida (UWF) in Pensacola, Florida, contained numerous ecological features, including natural areas with remnant longleaf pine stands that had undergone recovery from extensive regional logging. The two most prominent of these were studied to quantify the effects of chronic fire exclusion on longleaf pine stands. We addressed these questions: (1) how does composition and structure vary between areas? (2) how do soil characteristics vary between areas and change under fire exclusion? (3) what is the size structure of longleaf pine on the UWF campus? (4) how does the status of longleaf pine at the UWF campus compare to campuses of other colleges/universities within the nature range of longleaf pine? Fifteen 0.04 ha circular plots were established in each area to assess composition and structure and sample mineral soil. All live stems ≥2.5 cm diameter at breast height (DBH) in each plot were identified to species and measured for DBH to the nearest 0.1 cm. Mineral soil was taken to a 5-cm depth, air dried, and analyzed for pH, organic matter, cation exchange capacity, extractable macro- and micronutrients, and extractable aluminum. Basal area and density were closely similar between the natural areas, as was canopy dominance (live oak and longleaf pine), but with contrasting sub-dominant species. Soil analyses revealed no significant differences between natural areas, but suggested that fire exclusion decreased soil organic matter and fertility with establishment of hardwood species. Diameter structure of longleaf pine contrasted sharply between natural areas and with the main campus, suggesting different land-use history. The wide array of approaches to longleaf pine ecology by colleges/universities within its natural range indicates the importance of establishing a longleaf pine consortium to coordinate information.

高校校园构成了独特的城市界面。用于在佛罗里达州彭萨科拉建立西佛罗里达大学（UWF）的物业具有许多生态特征，包括自然区域中残留的长叶松林，这些林区已从广泛的区域伐木中恢复过来。研究了其中两个最突出的特征，以量化长期防火对长叶松林的影响。我们解决了以下问题：（1）区域之间的构成和结构如何变化？（2）土的特性在不同地区之间如何变化，并在防火情况下发生变化？（3）UWF校园内的长叶松的大小结构是什么？（4）UWF校园内的长叶松的状况与长叶松的自然范围内其他学院/大学的校园相比如何？十五0。在每个地区都建立了04公顷的圆形地块，以评估其组成和结构以及对矿物土壤的采样。在每个样区中，所有胸径≥2.5cm的活茎在乳房高度（DBH）均被识别为物种，并测量DBH精确到0.1 cm。将矿物土壤深至5厘米深，风干，然后分析其pH值，有机物，阳离子交换容量，可提取的大量和微量营养素以及可提取的铝。自然区域之间的基础面积和密度，冠层优势（鲜活的橡树和长叶松树）极为相似，但具有相反的优势物种。土壤分析表明，自然区域之间没有显着差异，但是，防火措施降低了硬木树种的形成，降低了土壤有机质和肥力。长叶松的直径结构在自然区域与主要校园之间形成鲜明对比，表明不同的土地利用历史。高校/大学在其自然范围内对长叶松树生态学采取的各种方法表明建立长叶松树财团以协调信息的重要性。