保育與休閒部 保育。保護。享受。
保育與休閒部 
目錄高海拔博爾德森林和森林
These open forests and woodlands occupy relatively unweathered boulderfields at elevations above 900 m (3,000 ft) in both the Blue Ridge and Ridge and Valley provinces. Communities in this group are known to occur from West Virginia south to northern Georgia. In Virginia, yellow birch (Betula alleghaniensis), American mountain-ash (Sorbus americana), and mountain maple (Acer spicatum) are the typical dominants of boulderfields weathered from granite, metabasalt, rhyolite, quartzite, and sandstone at the highest elevations. These habitats are usually best developed on north-facing slopes, where extreme winter temperatures, high winds, and ice storms strongly influence forest physiognomy. Trees here are typically gnarled and widely spaced because of difficult establishment and repeated damage from wind and ice. Typical shrubs include gooseberries (Ribes cynosbati, Ribes glandulosum, Ribes rotundifolium), hobblebush (Viburnum lantanoides), red raspberry (Rubus idaeus ssp. strigosus), and red-berried elder (Sambucus racemosus var. pubens ). The high cover of exposed rock in these habitats tends to limit overall species richness and herbaceous density. However, the Appalachian rock polypody (Polypodium appalachianum) is often abundant. Additional herbaceous species such as yellow blue-bead lily (Clintonia borealis), whorled aster (Oclemena acuminata = Aster acuminatus), Appalachian oak fern (Gymnocarpium appalachianum), marbled alumroot (Heuchera pubescens), brownish sedge (Carex brunnescens), and summer sedge (Carex aestivalis) may occur where substrate conditions are suitable. Cool microclimates favor the occurrence of many northern and high mountain species.
全球稀有且被聯邦列入名列的雪南多亞山鼠（Pleth odon shenandoah）是藍嶺北部（佩奇和麥迪遜縣）三個樹林纖薄、高高海拔巨石場的特有特有性。
由於北部和南部阿巴拉奇物種幾乎完全主導，這些物種僅限於微氣候涼爽的棲息地，這些物種幾乎完全主導地與低海拔寶爾德菲爾德森林很容易區分。參考文獻：Fleming 和 Coulling（ 2001 ），Fleming 等人。 ( 2007 )、Johnson 與 Ware ( 1982 )、Rheinhardt 與 Ware ( 1984 )。
© DCR-DNH，加里 ·P· 弗萊明。
下載下面列出的每種社群類型的組成摘要統計資料表。
