LEADER 02816oam  2200385Ia 450 
001 9910695862603321
005 20231011151840.0
035   $a(CKB)5470000002373164
035   $a(OCoLC)70151845
035   $a(EXLCZ)995470000002373164
100   $a20060621d2005      ua             0
101 0 $aeng
135   $aurcn|||||||||
181   $ctxt$2rdacontent
182   $cc$2rdamedia
183   $acr$2rdacarrier
200 00$aEcological zones in the southern Appalachians $efirst approximation /$fSteve A. Simon [et al.]
210  1$aAsheville, NC :$cU.S. Dept. of Agriculture, Forest Service, Southern Research Station,$d[2005]
215   $aiii, 41 pages $cdigital, PDF file
225 1 $aResearch paper SRS
300   $a"December 2005"--T.p. verso.
320   $aIncludes bibliographical references (pages 27-29).
330 3 $a"Forest environments of the Southern Appalachian Mountains and their characteristic plant communities are among the most varied in the Eastern United States. Considerable data are available on the distribution of plant communities relative to temperature and moisture regimes, but not much information on fertility as an environmental influence has been published; nor has anyone presented a map of the major, broad-scale ecosystems of the region, which could be used for planning and management of biological resources on forestlands. Our objectives were to identify predominant ecological units, develop a grouping of geologic formations related to site fertility, and model and map ecological zones of the Southern Appalachians. We synthesized 11 ecological units from an earlier analysis and classification of vegetation, which used an extensive database of over 2,000 permanent, 0.10-ha, intensively sampled plots. Eight lithologic groups were identified by rock mineral composition that upon weathering would result in soils of low or high availability of base cations. The presence or absence of ecological zones (large areas of similar environmental conditions consisting of temperature, moisture, and fertility, which are manifested by characteristic vegetative communities) were modeled as multivariate logistic functions of climatic, topographic, and geologic variables. Accuracy of ecozone models ranged from 69- to 95-percent correct classification of sample plots; accuracy of most models was > 80 percent "--P. [1].
410  0$aResearch paper SRS;$v41
606   $aEcological zones$zAppalachian Region, Southern
615  0$aEcological zones
701   $aSimon$b Steven A$01417959
712 02$aUnited States.$bForest Service.$bSouthern Research Station.
801  0$bORE
801  1$bORE
801  2$bGPO
906   $aBOOK
912   $a9910695862603321
996   $aEcological zones in the southern Appalachians$93527880
997   $aUNINA