የጥበቃ እና መዝናኛ መምሪያ መጠበቅ. መከላከል. መደሰት.
የጥበቃ እና መዝናኛ መምሪያ 
ማውጫከፍተኛ ከፍታ ያለው የቦልደርፊልድ ደኖች እና ዉድላንድስ
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.
በአለም አቀፍ ደረጃ ብርቅዬ እና በፌዴራል ደረጃ የተዘረዘረው Shenandoah salamander (Plethodon Shenandoah) በሰሜናዊ ብሉ ሪጅ (ገጽ እና ማዲሰን ካውንቲ) ላይ ለሶስት ቀጭን ደን የተሸፈኑ ከፍተኛ ከፍታ ያላቸው የድንጋይ ሜዳዎች የተስፋፋ ነው።
ይህ ቡድን ከዝቅተኛ ከፍታ ቦልደርፊልድ ደኖች የሚለየው ሙሉ ለሙሉ ቅርብ በሆነው የሰሜናዊ እና ደቡባዊ አፓላቺያን ዝርያዎች በጥቃቅን የአየር ንብረት አከባቢዎች ብቻ ነው።ማጣቀሻዎች፡ ፍሌሚንግ እና ኩሊንግ (2001)፣ ፍሌሚንግ እና ሌሎች። (2007)፣ ጆንሰን እና ዋሬ (1982)፣ ራይንሃርት እና ዋሬ (1984)።
የዚህን የስነምህዳር ማህበረሰብ ቡድን ተጨማሪ ፎቶዎች ለማግኘት እዚህ ጠቅ ያድርጉ ።
© DCR-DNH, ጋሪ ፒ. ፍሌሚንግ.
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