Dispersal Losses of Early-Instar Spruce Budworm (Lepidoptera: Tortricidae) Larvae in Strip Clearcut and Dense Spruce-Fir Forests of Maine
Dispersal Losses of Early-Instar Spruce Budworm (Lepidoptera: Tortricidae) Larvae in Strip Clearcut and Dense Spruce-Fir Forests of Maine
复制标题
缅因州条带皆伐林和茂密云杉林中早龄云杉芽虫（鳞翅目：Tortricidae）幼虫的传播损失
DOI：
10.1093/ee/12.6.1787
复制
发表时间：
1983
影响因子：
1.7
通讯作者：
J. Dimond
中科院分区：
文献类型：
--
作者：
D. T. Jennings;M. W. Houseweart;J. Dimond
带状皆伐导致云杉芽虫的早期幼虫的扩散损失。烟卷蛾Choristoneura fumiferana（Clemens）（鳞翅目：卷蛾科）.明显更多的L1幼虫被困在未切割的残留带的带状皆伐比密集的林分。切条中诱捕的L2幼虫显著多于残留条带或密集林分中诱捕的L2幼虫。L2幼虫的捕获量明显高于L1幼虫。捕获的L1 + L2幼虫的平均百分比代表了初始卵种群的一小部分（1.4 - 4.0%）。成比例地，更多的幼虫被困在带状皆伐（未切割残留物+切割带）比在密集的立场。估计的综合损失（L1 + L2）为140万幼虫每公顷密集的立场和290万幼虫每公顷带皆伐。
Strip clearcutting contributed to dispersal losses of early-instar larvae of the spruce budworm. Choristoneura fumiferana (Clemens) (Lepidoptera: Tortricidae). Significantly more L1 larvae were trapped in uncut residual strips of strip clearcuts than in dense stands. Significantly more L2 larvae were trapped in cut strips than in residual strips or in dense stands. Consistently more L2 larvae were caught than L1 larvae. Mean percentages of L1 + L2 larvae trapped represented small fractions (1.4−4.0%) of initial egg populations. Proportionately more larvae were trapped in strip clearcuts (uncut residuals + Cut strips) than in dense stands. Estimated combined losses (L1 + L2) were 1.4 million larvae per ha for dense stands and 2.9 million larvae per ha for strip clearcuts.