| 词条 | Appalachian hemlock–northern hardwood forest |
| 释义 |
The Appalachian hemlock–northern hardwood forest is a forest system found in the Appalachian Mountains of New Hampshire, Vermont, Massachusetts, Connecticut, New York, New Jersey, Pennsylvania, Maryland, Virginia, West Virginia and western North Carolina. These forests occur in deep coves, moist flats, and ravines. FloraAppalachian hemlock–northern hardwood forests include yellow birch (Betula alleghaniensis), mountain maple (Acer spicatum), sugar maple (Acer saccharum), and beech (Fagus grandifolia). These trees often form a deciduous canopy, but are sometimes mixed with hemlock (Tsuga canadensis) or white pine (Pinus strobus). Other common trees include oaks (most commonly red oak (Quercus rubra)), tulip tree (Liriodendron tulipifera), black cherry (Prunus serotina), and sweet birch (Betula lenta). Mountain laurel (Kalmia latifolia), hophornbeam (Ostrya virginiana), and rhododendron (Rhododendron spp.) are found in the understory.[1][2][3] Adjacent transitionsIn the north this forest type is replaced by Laurentian–Acadian pine–hemlock–hardwood forest and Laurentian–Acadian northern hardwood forest.[1] References1. ^1 {{cite web |url = http://www.natureserve.org/explorer/servlet/NatureServe?searchSystemUid=ELEMENT_GLOBAL.2.723013 |title = Appalachian (Hemlock)-Northern Hardwood |publisher = NatureServe Explorer |accessdate= 22 October 2012}} {{DEFAULTSORT:Appalachian hemlock-northern hardwood forest}}2. ^{{cite web|url=http://www.dcr.virginia.gov/natural_heritage/ncTIIe.shtml |title=Natural Communities of Virginia - Terrestrial System - Low Elevation Mesic Forests: Eastern Hemlock Hardwood Forests |publisher=Virginia Department of Conservation and Recreation |accessdate=22 October 2012 |deadurl=yes |archiveurl=https://web.archive.org/web/20120926202409/http://www.dcr.virginia.gov/natural_heritage/ncTIIe.shtml |archivedate=26 September 2012 }} 3. ^{{cite web |url = http://www.acris.nynhp.org/guide.php?id=9991 |title = Hemlock-Northern Hardwood Forest Guide - New York Natural Heritage Program |publisher = New York Natural Heritage Program |accessdate= 22 October 2012}} 6 : Temperate broadleaf and mixed forests in the United States|Ecoregions of the United States|Flora of the Appalachian Mountains|Appalachian forests|Plant communities of the Eastern United States|Forests of the United States |
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