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Hubbard Brook Experimental Forest
Hubbard Brook Experimental Forest is an area of land in the towns of Woodstock and Thornton in the White Mountains of New Hampshire that functions as an outdoor laboratory for ecological studies. It was initially established in 1955 by the United States Forest Service for the study of the relationship between forest cover and water quality and supply.
==Forest land management==
In 1955 the first tract was dedicated in the Hubbard Brook watershed, just west of the village of West Thornton, New Hampshire. The first stream in the forest was fitted with monitoring devices in 1956. Subsequently, seven additional headwater streams and their associated watersheds were delimited for study. Each such zone functions essentially as a closed environmental system. Since efflux of water, minerals, and water-bound organisms leaving each watershed (and leaving the entire forest as well) can be monitored, the effects of changes experimentally introduced into the system can be measured.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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