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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Coniferous swamp ： ウィキペディア英語版 Coniferous swamp Coniferous swamps are forested wetlands in which the dominant trees are lowland conifers such as northern white cedar (''Thuja occidentalis''). The soil in these swamp areas is typically saturated for most of the growing season and is occasionally inundated by seasonal storms or by winter snow melt. The substrate is usually organic in nature and may contain peat in varying amounts or be composed entirely of muck. The swamp substrate is typically nutrient-rich and neutral to alkaline but can be acidic and nutrient-poor. Coniferous swamps vary in composition, with different species of conifer dominating, and varying amounts of deciduous hardwoods growing within the swamp. A wide diversity of plants is represented within the swamps, with certain species dominating in a variety of microhabitats dependent on factors such as available sunlight (as in cases of trees downed by wind or disease), soil Ph, standing groundwater, and differences of elevation within the swamp such as tussocks and nurse logs.〔Minnesota's St. Croix River Valley and Anoka sandplain:... By Daniel S. Wovcha, Barbara C. Delaney, Gerda E. Nordquist p. 113-114〕〔Wetlands of the American Midwest: a historical geography of changing attitudes By Hugh C. Prince p.66〕 The different types of coniferous swamps are referred to according to their dominant trees. ''Rich conifer swamp'' is dominated by Northern white-cedar and typically occurs south of the climatic tension zone throughout the Midwest and northeastern United States and adjacent areas in Canada. North of the climatic tension zone, tamarack (''Larix laricina'') is the dominant species of conifer in minerotrophic wetlands classified as ''rich tamarack swamp''. A roughly equal mix of hardwood trees and conifers is known as a ''hardwood-conifer swamp''. ==Rich conifer swamp== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Coniferous swamp」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.