Tree Mortality Following Defoliation by the European Gypsy Moth (Lymantria dispar L.) in the United States: A Review
Tree Mortality Following Defoliation by the European Gypsy Moth (Lymantria dispar L.) in the United States: A Review
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美国舞毒蛾 (Lymantria dispar L.) 落叶后的树木死亡率：回顾
DOI：
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发表时间：
1999
期刊：
影响因子：
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通讯作者：
James E. Johnson
中科院分区：
文献类型：
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作者：
C. Davidson;K. Gottschalk;James E. Johnson
这篇综述介绍了有关欧洲舞毒蛾（Lymantria dispar L.）的落叶和随后在美国东部的树木死亡的信息。描述落叶引起的树木死亡的文献非常广泛，但仍然存在以下问题：(1)初始林分组成与随后树木死亡率之间的关系，(2)立地质量对树木死亡率的影响，以及(3)观察到的最初和随后爆发的死亡率之间的差异。我们对现有文献的回顾和分析表明，初始物种组成影响随后的落叶。以易感寄主为主的林分比易感、抗性和免疫寄主混合的林分具有更高的种特异性和总死亡率。不同生产力地点的死亡率差异似乎不是地点质量的直接结果；相反，立地质量通过其对物种组成的影响间接影响死亡率，从而影响落叶。最初爆发和随后爆发之间的差异似乎主要是由于在最初爆发期间脆弱的橡树和下层树冠物种的损失；发现最初爆发的橡树死亡率显著高于随后爆发的橡树死亡率（P = 0.0727）。对。Sci。45(1):74 - 84。
This review presents information related to defoliation by the European gypsy moth (Lymantria dispar L.) and subsequent tree mortality in the eastern United States. The literature describing defoliation-induced tree mortality is extensive, yet questions still remain concerning (1) the association between initial stand composition and subsequent tree mortality, (2) the influence of site quality on tree mortality, and (3) observed differences between mortality rates in initial and subsequent outbreaks. Our review and analysis of the available literature indicates that initial species composition affects subsequent defoliation. Stands with predominantly susceptible host species have higher levels of species-specific and total mortality than mixed stands of susceptible, resistant, and immune host species. Differences in mortality on sites of varying productivity do not appear to be a direct result of site quality; rather, site quality indirectly influences mortality rates through its effect on species composition and therefore defoliation. Differences between initial and subsequent outbreaks appear to be due primarily to losses of vulnerable oaks and lower canopy species during the initial outbreak; oak mortality in initial outbreaks was found to be significantly greater (P = 0.0727) than oak mortality in subsequent outbreaks. For. Sci. 45(1):74-84.