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Big Woods
Big Woods refers to a type of temperate hardwood forest ecoregion found in western Wisconsin and south-central Minnesota. "Big Woods" is a direct translation of the name given to the region by French explorers: ''Grand Bois''. ==Trees and native vegetation== The dominant trees are American elm, basswood, sugar maple, and red oak. The understory is composed of ironwood, green ash, and aspen. The Big Woods would have once covered in a diagonal strip long and wide. Today most of this region has been cleared for agriculture and urban development. Remnant and secondary stands of Big Woods remain in parks and other protected areas. Most of the Big Woods area in Minnesota are "closed forest" savannas. Indian de-population 1500-1800 a.d. reduced burnings, which led to the oak savannas succeeding into sugar maple - basswood and red oak "closed forest" savannas. Native vegetation based on soils information (note the bright green color) from the Natural Resources Conservation Service of the United States Department of Agriculture shows the historic extent of oak savannas in the Big Woods region:
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「Big Woods」の詳細全文を読む
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