Which Trees and Stands are attacked by the Southern Pine Beetle
Which Trees and Stands are attacked by the Southern Pine Beetle
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DOI：
10.1093/sjaf/23.4.217
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发表时间：
1999-11
影响因子：
--
通讯作者：
Yujia Zhang;B. Zeide
中科院分区：
文献类型：
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作者：
Yujia Zhang;B. Zeide
火炬松的长期观测分析种植园表明，南方松毛虫SPB(Dendroctonus FrontalisZimmermann)在密林中杀死的树木比例较大。硬木树种的存在可能通过阻碍SPB的扩散来减少损害。研究还发现，在给定的林分中，死亡率随着树木大小的增加而增加。另一方面，损伤程度与年龄和平均直径无关。就我们的地块而言，火炬松被甲虫杀死的年概率为4.59x10-4。在豆腐病肆虐林分中，这一概率增加了39倍(1.81×10-2。使用由松树和阔叶树的林分密度以及单株树木的相对直径驱动的预测模型，可以做出更准确的估计。南。J.Appl.为。23(4)：217-223。
An analysis of long-term observations from loblolly pine (Pinus taedaL.) plantations showed that the southern pine beetle, SPB (Dendroctonus frontalisZimmermann), kills a larger proportion of trees in dense stands. The presence of hardwood species diminishes damage, probably by hindering the dispersal of the SPB. It was also found that, in a given stand, mortality increases with tree size. On the other hand, the degree of damage was not related to age or mean diameter. For our plots, the annual probability that a loblolly pine tree would be killed by the beetle was 4.59 x 10-4. In the SPB infested stands, this probability increased 39 times (1.81 x 10-2. More precise estimates can be made using a prediction model driven by stand densities of pines and hardwoods, and the relative diameter of individual trees. South. J. Appl. For. 23(4):217-223.