የጥበቃ እና መዝናኛ መምሪያ መጠበቅ. መከላከል. መደሰት.
የጥበቃ እና መዝናኛ መምሪያ 
ማውጫፒዬድሞንት ሃርድፓን ደኖች
This ecological group contains a group of oak-hickory forests that occupy gentle to flat Piedmont uplands with impermeable clay subsoils. On high bedrock terraces of the Potomac Gorge in northern Virginia and occasionally elsewhere, flat-lying bedrock underlying shallow soil acts as a surrogate "hardpan" and supports similar vegetation. Piedmont Hardpan Forests occur from Virginia south to Georgia. Sites are usually underlain either by mafic rocks such as diabase or by acidic slates. Surficial soils are silt or clay loams, with an abrupt transition to heavy, plastic clay hardpans at depths of 23 to 38 cm (9 to 15 in). These shrink-swell clay soils pond water for brief or, at a few sites, prolonged periods during rainy weather, but tend to be very hard and dry during significant portions of the growing season. Post oak (Quercus stellata) is the most typical overstory tree, growing in nearly pure stands or in variable mixtures with pignut hickory (Carya glabra), Carolina shagbark hickory (Carya carolinae-septentrionalis, only in Charlotte, Halifax, and Pittsylvania counties), white oak (Quercus alba), blackjack oak (Quercus marilandica var. marilandica), Virginia pine (Pinus virginiana), and white ash (Fraxinus americana). Virginia pine increases following cutting and may dominate on heavily disturbed, clear-cut sites. Winged elm (Ulmus alata), sweetgum (Liquidambar styraciflua), and eastern red cedar (Juniperus virginiana) are characteristic understory trees. Shrubs include eastern redbud (Cercis canadensis var. canadensis), black haw (Viburnum prunifolium), fringetree (Chionanthus virginicus), and blueberries (Vaccinium spp.). In closed stands, there is often little herbaceous growth, while more open stands support large patches of xerophytic graminoids such as poverty oatgrass (Danthonia spicata), eastern needlegrass (Piptochaetium avenaceum), and little-headed nutrush (Scleria oligantha).
ቆሞዎች በጥንታዊ ፣ የጎርፍ መጥለቅለቅ በሌለባቸው የጅረት እርከኖች ላይ የውሃ ኩሬዎች ለረጅም ጊዜ የሚቆዩ ልዩ ልዩ የደጋ እና ረግረጋማ ዝርያዎችን ያካተቱ ናቸው ፣ ግን የሃይድሮሎጂ ሁኔታቸው ችግር ያለበት እና እዚህ እንደ የመሬት ስርዓት ማህበረሰቦች ይወሰዳሉ። በእነዚህ በየጊዜው እርጥብ ተለዋጮች ውስጥ እንደ ዊሎው ኦክ (Quercus phellos), sweetgum (Liquidambar styraciflua), deciduous holly (Ilex decidua) ያሉ ዝርያዎች. ጸጉራማሃይቡሽ ብሉቤሪ ( Vccinium fuscatum)፣ የቅዱስ ፒተር ዎርት (Hypericum crux-andriae) እና beaksedges (Rhynchospora spp) ከላይ ከተዘረዘሩት የ xerophytic ዝርያዎች ጋር ተቀላቅለዋል።
የፒዬድሞንት ሃርድፓን ደኖች በልዩ የአፈር አካባቢዎች በፒዬድሞንት ውስጥ ተበታትነው ይገኛሉ እና በቨርጂኒያ ውስጥ እንደ ብርቅዬ ተደርገው ይወሰዳሉ። የሰሜን ሃርድፓን መሰረታዊ ኦክ - Hickory Forest (CEGL006216)፣ በአሁኑ ጊዜ በመሠረታዊ Oak - Hickory Forests ECG ውስጥ መታከም፣ በዚህ ቡድን ውስጥም ሊካተት ይችላል፣ ነገር ግን በመጠኑ ተለዋዋጭ የአፈር ባህሪያት ባላቸው ንጣፎች ላይ ይበቅላል።
ማጣቀሻ፡ ፍሌሚንግ (2002a)፣ ፍሌሚንግ (2007)።
የዚህን የስነምህዳር ማህበረሰብ ቡድን ተጨማሪ ፎቶዎች ለማግኘት እዚህ ጠቅ ያድርጉ ።
© DCR-DNH, ጋሪ ፒ. ፍሌሚንግ.
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