Main Title |
Growth-Trend Declines of Spruce and Fir in Mid-Appalachian Subalpine Forests. |
Author |
Adams, H. S. ;
Stephenson, S. L. ;
Blasing, T. J. ;
Duvick, D. N. ;
|
CORP Author |
Oak Ridge National Lab., TN. ;Dabney S. Lancaster Community Coll., Clifton Forge, VA. ;Fairmont State Coll., WV.;Corvallis Environmental Research Lab., OR. |
Year Published |
1985 |
Report Number |
EPA/600/J-85/360; |
Stock Number |
PB86-179207 |
Additional Subjects |
Growth ;
Fir trees ;
Forest trees ;
Age determination ;
Trees(Plants) ;
Plant ecology ;
Elevation ;
Trends ;
Droughts ;
Mortality ;
Air pollution ;
Stress(Physiology) ;
Climate ;
Appalachian Mountains ;
Insects ;
Reprints ;
Picea rubens ;
Red spruce trees ;
Abies balsamea ;
Abies fraseri
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB86-179207 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
12p |
Abstract |
Dendroecological analysis of 258 increment growth cores collected from red spruce, balsam fir, and Fraser fir in central West Virginia and western Virginia indicates marked declines in growth-trend during the past 20 years similar to that reported for spruce and fir in high-elevation forests of the northern Appalachians. Consequently, growth-trend declines of conifers in subalpine forest ecosystems of eastern North America are apparently more widespread than previously realized and might therefore be related to a large-scale change in air quality. The initiation of growth-trend decline was often synchronous with the onset of a major drought, but the growth rates have failed to recover since the late 1960s when the drought ended. (Copyright (c) 1985 Pergamon Press Ltd). |