Patterns of foliar injury to red spruce on Whiteface Mountain, New York, during a high-injury winter
Patterns of foliar injury to red spruce on Whiteface Mountain, New York, during a high-injury winter
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纽约怀特菲斯山红云杉在高伤冬季的叶部损伤模式
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
R. Boyce
中科院分区：
文献类型：
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作者：
R. Boyce
红云杉（Picearubens Sarg.）在纽约阿迪朗达克山脉的白面山海拔1050米的一个地点测量了1992-1993年冬季后的降雨量。1992年，约有21%的树叶受伤。在林冠内，随着高度的增加，受害率逐渐增加（P <0.0001），以南侧最高（P <0.0001），西侧次之，北方和东侧最低（P<0.0001）。 损害是最高的树木，其冠层施肥与氮，中间的地面施肥的树木，最低的未处理的树木，但差异不显着（P = 0.45），并混淆与林分结构的差异。 强烈的方面和高度模式的损害证实了早期的工作表明，太阳辐射在造成冻害，导致冬季损害的红云杉中起着重要的作用。
Winter injury to red spruce (Picearubens Sarg.) after the winter of 1992–1993 was measured at an elevation of 1050 m at a site on Whiteface Mountain in the Adirondack Mountains of New York. Approximately 21% of the 1992 foliage was injured. Damage increased with height in the canopy (P < 0.0001), and was highest on the southern aspect (P < 0.0001), followed by the western aspect, which sustained more damage than the northern and eastern aspects (P < 0.0001). Damage was highest on trees whose canopy was fertilized with nitrogen, intermediate on ground-fertilized trees, and lowest on untreated trees, but differences were not significant (P = 0.45) and were confounded with stand structure differences. The strong aspect and height patterns of damage confirm earlier work showing that solar radiation plays an important role in causing the freezing injury that leads to winter damage in red spruce.