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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 Willamette Valley Ponderosa Pine ： ウィキペディア英語版 Willamette Valley Ponderosa Pine The Willamette Valley Ponderosa Pine is a variant of the Ponderosa Pine native to the Willamette Valley in the Northwestern United States. It is adapted for Western Oregon's wet winter and dry summer. ==History== The Willamette Valley ponderosa variant only grows on the valley floor, unlike the Douglas fir, which grows on hillsides, and the wood is softer and easier to mill than the native hardwoods. Because of this, when early settlers used wood from the trees to build homes and cleared land for agriculture, the variant's population was "decimated".〔 Prior to restoration efforts, the pine survived only in scattered stands between Hillsboro and Cottage Grove.〔 The Lewis's woodpecker and the slender-billed nuthatch (a subspecies of the white-breasted nuthatch) nest in the tree and rely on it for food–their populations were reduced along with that of the pine.〔 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「Willamette Valley Ponderosa Pine」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.