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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 Oak Openings Region ： ウィキペディア英語版 Oak Openings Region The Oak Openings Region is a globally rare ecosystem composed of over in Northwest Ohio. The land consists largely of oak savanna and grassland prairie. It is considered by The Nature Conservancy as having a similar ecological importance as the Florida Everglades and is one of the 200 "Last Great Places on Earth". This unique area was formed after the last ice age when the continental glacier melted leaving behind a large lake called Lake Warren. Over time, this lake was gradually reduced to present day Lake Erie and left behind a large tract of sandy soil to the west. The area was frequented by wildfires that only the thick-barked oak trees could survive. When pioneers arrived after first crossing through the Great Black Swamp they called the area the "Oak Openings" as a comparison to the thick swamp.〔http://www.oakopen.org/history/〕〔http://www.ohio-nature.com/Oak-Openings.html〕 Today, the Oak Openings Preserve Metropark is the largest intact piece of savanna remaining.〔http://www.metroparkstoledo.com/metroparks/oakopenings/〕 ==References== 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「Oak Openings Region」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.