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首页> 外文学位 >Ecology and control of rhododendron (Rhododendron ponticum L.) in Turkish eastern beech (Fagus orientalis Lipsky) forests.
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Ecology and control of rhododendron (Rhododendron ponticum L.) in Turkish eastern beech (Fagus orientalis Lipsky) forests.

机译：土耳其东部山毛榉（Fagus Orientalis Lipsky）森林中杜鹃花（Rhododendron ponticum L.）的生态和控制。

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摘要

Purple-flowered rhododendron (Rhododendron ponticum L.) and yellow-flowered rhododendron (R. flavum Don.) are two dominant shrub species of the eastern beech (Fagus orientalis L.) understories in the eastern and western Black Sea Region (BSR), respectively. These invasive woody species significantly reduce beech growth and can preclude tree regeneration. The ecological consequence is an aging beech overstory with little or no regeneration to replace the mature trees. Great rhododendron (R. maximum L.) has been increasing in the forests of the Southern Appalachians of the United States, reducing tree regeneration and growth. The BSR and Southern Appalachians bear noteworthy similarities in climate, topography, and the forest flora. Purple-flowered and great rhododendrons also show important similarities in their ecology and the forest vegetation problems they can cause. Current rhododendron-dominated and threatened BSR forests may provide an advanced ecological picture of the forests of the Southern Appalachians in which great rhododendron now thrives. Therefore, new information gained on the ecology and effective and cost-efficient control of purple-flowered rhododendron may significantly improve forest management practices, not only for the current rhododendron-invaded BSR ecosystem, but also for other parts of the world.;This dissertation consists of five separate yet related chapters. The first gives relevant literature reviewed for the dissertation. The second chapter focuses on various environmental and disturbance factors that may have shaped the current purple-flowered rhododendron-dominated beech forests of the BSR of Turkey. Chapter 3 assesses the effects of various manual and herbicidal woody control techniques on purple-flowered and yellow-flowered rhododendron in two field experiments in the BSR. The fourth chapter relates a study of uptake and translocation behavior of triclopyr ester and imazapyr in great rhododendron. This information is used to determine the optimum herbicide-surfactant combinations for the greatest active ingredient uptake and root translocation in great rhododendron. The last chapter is a synthesis of the information gained in all of these different experiments.
机译：紫色的杜鹃花（Rhododendron ponticum L.）和黄色的杜鹃花（R. flavum Don。）是东部和西部黑海地区（BSR）东部山毛榉（Fagus Orientalis L.）林下的两种优势灌木种，分别。这些侵入性的木本物种大大减少了山毛榉的生长，并可能阻止树木的再生。生态后果是山毛榉老龄化，没有或几乎没有再生来取代成熟的树木。美国南部阿巴拉契亚人的森林中的大杜鹃（R. maximum L.）一直在增加，从而减少了树木的再生和生长。 BSR和南部的阿巴拉契亚山脉在气候，地形和森林植物群方面具有明显的相似性。紫色的大杜鹃花在生态学和可能引起的森林植被问题上也显示出重要的相似性。当前以杜鹃花为主和受威胁的BSR森林可能提供了南部阿巴拉契亚人森林的高级生态图景，大杜鹃花现在在那里繁衍生息。因此，获得的关于紫色杜鹃花的生态学以及有效和具有成本效益的控制的新信息可能会极大地改善森林管理实践，这不仅适用于当前入侵杜鹃花的BSR生态系统，而且适用于世界其他地区。由五个独立但相关的章节组成。首先给出了相关的文献综述。第二章重点介绍了各种环境因素和干扰因素，这些因素可能已塑造了土耳其BSR目前以紫色杜鹃花为主的山毛榉森林。第三章在BSR的两个田间试验中评估了各种手动和除草木质控制技术对紫色和黄色杜鹃的影响。第四章研究了杜鹃花中麦草酯和吡虫啉的吸收和转运行为。此信息用于确定最佳的除草剂-表面活性剂组合，以使杜鹃花中的最大活性成分吸收和根系易位。最后一章总结了在所有这些不同实验中获得的信息。

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  • 作者

    Esen, Derya.;

  • 作者单位

    Virginia Polytechnic Institute and State University.;

  • 授予单位 Virginia Polytechnic Institute and State University.;
  • 学科 Biology Ecology.;Agriculture Forestry and Wildlife.
  • 学位 Ph.D.
  • 年度 2000
  • 页码 112 p.
  • 总页数 112
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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