Doctoral Dissertation Research: The Role of Historical and Environmental Factors in the Invasion of Pine Forests in the Florida Panhandle

博士论文研究：历史和环境因素在佛罗里达狭长地带松林入侵中的作用

• 批准号: 9628027
• 负责人: Kathleen Parker
• 金额: $ 0.84万
• 依托单位: University of Georgia Research Foundation Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-06-15 至 1997-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9628027&HistoricalAwards=false
• 关键词: Doctoral; Dissertation; Research; Role; Historical

McCay, Deanna U. of Georgia This dissertation proposal intends to analyze the spatial and temporal patterns of sand pine expansion at Eglin Air Force Base, Florida. An air photo-based landscape level analysis will be used to determine the historic origin of sand pine and the nature of sand pine expansion over topographic and edaphic features. The documentation of past land use, including information such as fire dates, logging history, climatic information and grazing patterns will be used to assist in the illumination of the causal mechanisms of landscape change. At a more local scale, it is proposed to determine the composition and structure of existing pine forests with stand-level sampling and tree core collection to assess the influence of disturbance history on these characteristics. In addition, the study will explore relationships among sand pine regeneration, light levels, community composition and incremental growth patterns. The study will yield new knowledge of historical and environmental effects on plant communities operating at different spatial and temporal scales.

佐治亚州麦凯迪安娜大学本论文提案旨在分析佛罗里达州埃格林空军基地沙松扩张的空间和时间模式。 基于航空照片的景观水平分析将用于确定沙松的历史起源以及沙松在地形和土壤特征上扩展的性质。 过去土地利用的记录，包括火灾日期、伐木历史、气候信息和放牧模式等信息，将有助于阐明景观变化的因果机制。 在更局部的尺度上，建议通过林分采样和树芯采集来确定现有松林的组成和结构，以评估干扰历史对这些特征的影响。 此外，该研究还将探讨沙松再生、光照水平、群落组成和增量生长模式之间的关系。 这项研究将产生关于历史和环境对不同空间和时间尺度上植物群落影响的新知识。