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National Wetlands Inventory : ウィキペディア英語版 | National Wetlands Inventory In the United States the National Wetland Inventory is a Fish and Wildlife Service program started in the 1970s to inventory and map all wetlands, primarily for scientific purposes. It has since been de-funded and most of its data is outdated. The data and maps it produces have been used to track gains and losses of wetlands for more than two decades. It uses the Cowardin Classification System to classify wetlands. == References == http://www.fws.gov/Wetlands/index.html *
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「National Wetlands Inventory」の詳細全文を読む
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