SPATIAL PATTERNS IN FOREST COMPOSITION AND STANDING DEAD RED SPRUCE IN MONTANE FORESTS OF THE ADIRONDACKS AND NORTHERN APPALACHIANS

被引：23
作者：
CRAIG, BW [1 ]
FRIEDLAND, AJ [1 ]
机构：
[1] DARTMOUTH COLL,DEPT EARTH SCI,HANOVER,NH 03755
来源：
ENVIRONMENTAL MONITORING AND ASSESSMENT | 1991年 / 18卷 / 02期
关键词：
D O I：
10.1007/BF00394975
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
The decline of red spruce (Picea rubens Sarg.) in montane forests of the northeastern United States has been previously reported. The objective of this study was to assess spatial patterns, if any, in standing dead red spruce stems in the Adirondacks of New York and northern Appalachians of Vermont, New Hampshire, and Maine. A stratified random sample of 19 mountains along a west to east transect in the Adirondacks and the northern Appalachians showed that the live basal area of all species was highest in the White Mountains (34.6 m2ha-1) and lowest in the Adirondack Mountains (23.7 m2ha-1). Basal area of live red spruce (1.2 m2ha-1) in the Green Mountains was significantly lower than in any other region. Intact standing dead red spruce in the Adirondack and Green Mountains (30%) was significantly higher than that in the three eastern clusters (14%). The amount of intact standing dead red spruce trees increased with elevation in only the western part of the region. With the exception of the Adirondacks, there was a greater average percent dead red spruce on the west side than on the east side of each mountain. The sum of standing dead for other t ree species (average 13%) showed no statistically significant patterns with region, elevation or aspect, and was significantly lower than the amount of total dead red spruce (average 42%). The standing dead red spruce patterns we observed cannot be associated with any specific causal factors at this time.
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页码：129 / 143
页数：15
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