| 祁骁杰, 卜宇飞, 许志春, 温俊宝*,2016,杨树木段内光肩星天牛幼虫数量的声学检测[J].环境昆虫学报,(3):529-534 |
| 杨树木段内光肩星天牛幼虫数量的声学检测 |
| Using acoustic technology detect the different numbers of Anoplophora glabripennis larvae in poplar |
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| DOI： |
| 中文关键词: 光肩星天牛 幼虫 声音检测 脉冲个数 |
| 英文关键词:Anoplophora glabripennis larvae acoustical detection signal impulses |
| 基金项目:北京市科技专项（Z131105002813017） |
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| 摘要点击次数: 752 |
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| 中文摘要: |
| 光肩星天牛是重要的检疫性林木害虫，由于幼虫在树干内部取食，现有的方法很难检测到幼虫的为害情况。利用声音检测技术在室内对杨树木段中不同数量的光肩星天牛幼虫产生的声音信号进行检测，结果显示：不同数量光肩星天牛幼虫产生的声音信号在时域、频域方面均无显著差异，脉冲持续时间在3-6 ms范围内；信号的频率在7235.20-7924.20 Hz范围内，且主频为7725.00 Hz。但不同数量光肩星天牛幼虫产生的声音信号的脉冲个数之间存在显著的差异（P<0.05），且脉冲个数与幼虫数量之间存在线性关系，即y=13.14x-3.55（R2=0.986），利用此数量关系可以在今后的检测中判断光肩星天牛幼虫的虫口数量和危害状况。 |
| 英文摘要: |
| Anoplophora glabripennis(Motschulsky) (Coleoptera: Cerambycidae) an invasive pest quarantined in China, is difficult to detect because the larvae feed inside trees. Acoustic technology was used to detect the different numbers of larvae sound. The result indicates there were no significant differences between different numbers of larval and signal impulses characteristics. The signal impulses duration is 3-6 ms, average impulses duration of 4.6 ms, signal frequency range 7235.20-7924.20 Hz, and dominant frequency for 7752.00 Hz. But there were significant differences between numbers of larvae and numbers of signal impulse which exist a linear relationship. This may provide basic evidence for detect different numbers of larvae. |
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