DISSERTATION RESEARCH: Restoration of Upland White Cedar in Northeastern Minnesota

论文研究：明尼苏达州东北部高地白雪松的恢复

• 批准号: 9623458
• 负责人: Peter Reich
• 金额: $ 0.95万
• 依托单位: University of Minnesota-Twin Cities
• 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: 1996-06-01 至 1998-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9623458&HistoricalAwards=false
• 关键词: DISSERTATION; RESEARCH; Restoration; Upland; White

REICH DEB-9623458 White cedar forests were once common in the western Great Lakes region. Widespread logging and fire in the early 20th century reduced old-growth white cedar forests to a few small stands surrounded by younger forest. White cedar forests in upland areas, such as the North Shore of Lake Superior, are especially rare. For several decades, white cedar reproduction in remaining patches has been scarce. As older trees die, there are no younger trees to replace them. The North Shore White Cedar Restoration Project will identify the most serious problems faced by white cedar. The proposed study will identify barriers to regeneration in old-growth cedar forests on the North Shore of Lake Superior and enable the development of a recovery plan for this rare plant community. Factors leading to unsuccessful cedar reproduction may include browsing by white-tailed deer, poor growth conditions, and seed dispersal limitations. If reproduction continues to be unsuccessful, these forests may disappear within our lifetime, and thus this represents a biodiversity concern at several levels. The white cedar forest as an ecosystem type represents a part of our natural heritage; moreover, there may be plants and animals particularly associated with cedar forests whose distribution and abundance may be restricted due to the shrinkage of this habitat type.

德意志帝国-9623458白杉林曾经在大湖区西部很常见。20世纪初广泛的伐木和火灾使古老的白雪松森林变成了几个小树林，周围环绕着年轻的森林。在高地地区，如苏必利尔湖北岸的白柏林尤其罕见。几十年来，白柏在剩余的斑块上繁殖的情况一直很少。随着老树的死亡，没有更年轻的树来取代它们。北岸白柏修复项目将确定白柏面临的最严重问题。这项拟议的研究将确定苏必利尔湖北岸古老雪松林更新的障碍，并为这一稀有植物群落制定恢复计划。导致雪松繁殖失败的因素可能包括白尾鹿的觅食、不良的生长条件和种子传播的限制。如果繁殖继续失败，这些森林可能会在我们有生之年消失，因此这在几个层面上代表着对生物多样性的关注。白雪松森林作为一种生态系统类型代表了我们自然遗产的一部分；此外，可能有与雪松森林特别相关的动植物，其分布和丰度可能因这种生境类型的萎缩而受到限制。