Comparisons with Results from the Hubbard Brook Experimental Forest in the Northern Appalachians
Comparisons with Results from the Hubbard Brook Experimental Forest in the Northern Appalachians
The Hubbard Brook Experimental Forest (HBEF) in central New Hampshire, in the heart of the White Mountains, was established in 1955, two decades after Coweeta Hydrologic Laboratory (CHL). However, research objectives at both sites have long been similar, that is, to understand hydrologic and nutrient cycling processes for forest ecosystems, and to determine responses to natural and human disturbances. This chapter summarizes the responses to intensive cuttings on three watersheds at HBEF and compares the results with those from the clearcutting on Watershed 7 (WS 7) at CHL. Despite significant differences in site characteristics between CHL and HBEF, responses to intensive harvests showed several similarities. Among these are that harvested sites regenerated rapidly, with opportunistic and pioneer species dominating regrowth for the first 20+ years after harvest. Water yield also increased during the early years after harvest but declined rapidly with regrowth.
Keywords: Hubbard Brook Experimental Forest, Coweeta Hydrologic Laboratory, clearcutting, watersheds, hydrologic cycling, nutrient cycling, forest ecosystems
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