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Gensburg-Markham Prairie : ウィキペディア英語版 | Gensburg-Markham Prairie
The Gensburg-Markham Prairie, also known as Markham Prairie, is a high-quality tallgrass prairie located in Markham in the Chicago Metropolitan Area. It is part of the larger Indian Boundary Prairies managed by Northeastern Illinois University and The Nature Conservancy. Described by the Illinois Department of Natural Resources as "an unusual example of sandy loam prairie," it is a National Natural Landmark.〔(【引用サイトリンク】 publisher = Illinois Department of Natural Resources )〕 ==Ecology== The Gensburg-Markham Prairie dates its origins back to the closing years of the Wisconsin glaciation, when postglacial Lake Chicago deposited a large sand beach in what would later become a section of southern Cook County. The poorly drained, damp, sandy soil resisted successful farming, and early pioneer settlers left patches of tallgrass prairie grasses and forbs alone.
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「Gensburg-Markham Prairie」の詳細全文を読む
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