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Dissertation Research: Demographic and Genetic Studies of Longleaf Pine

论文研究：长叶松的人口统计和遗传学研究

基本信息

批准号：
8907138
负责人：
William Platt
金额：
$ 0.3万
依托单位：
Louisiana State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
1989
资助国家：
美国
起止时间：
1989-12-15 至 1992-05-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=8907138&HistoricalAwards=false
关键词：
Dissertation Research Demographic Genetic Studies

项目摘要

The proposed research will examine basic processes in forest tree ecology: dispersal (seeds), and survival of seedlings (as affected by fire). By investigating these life history traits in longleaf pine populations, this research will provide a number of new insights. First, this research will provide important information about dispersal abilities of forest tree species. There is a gap in knowledge of the amount of seeds that trees produce and how far seeds are dispersed. Second, how patterns of dispersal; reflect establishment and growth of seedlings will be elucidated. It is important to determine what factors play a role in the success of forest species from seeds to juveniles to adults. Finally, because some forest species, such as longleaf pine, can grow better in the presence of fire, it is important to see if fire plays a role in survival of seedlings. This research has many silvicultural applications. From this study, the optimum distance of seed dispersal can be predicted. This information will be helpful in management of pine populations. Second, the factors influencing survival can be determined. This information will be beneficial in increasing yields. Third, the study will shed light on how juvenile patterns reflect optimum forest structure, important in the thinning and spacing of trees. Finally, this research will provide information about fire effects and growth of forest species.

拟议的研究将检查森林树木生态学的基本过程：扩散（种子）和幼苗（受火灾影响）的生存。通过研究长叶松种群的这些生活史特征，本研究将提供一些新的见解。首先，该研究将为森林树种的扩散能力提供重要信息。在树木产生的种子数量和种子传播的距离方面，还存在知识缺口。第二，扩散模式如何；反映建立和幼苗生长将阐明。确定哪些因素在森林物种从种子到幼体到成虫的成功过程中起作用是很重要的。最后，因为一些森林物种，如长叶松，在有火的情况下可以更好地生长，所以观察火是否对幼苗的存活起作用是很重要的。本研究具有许多造林应用价值。由此可以预测种子的最佳传播距离。这些信息将有助于松树种群的管理。其次，可以确定影响生存的因素。这一信息将有助于提高产量。第三，该研究将揭示幼树模式如何反映最佳森林结构，这对树木的间伐和间距很重要。最后，本研究将提供有关火灾效应和森林物种生长的信息。