外来林木害虫缝锤小蠹的风险评估

Risk assessment of Gnathotrichus materiarius as a foreign forest pest

缝锤小蠹是一种较容易被进境原木携带的外来林木害虫,能够对树木造成严重的危害。但该虫作为一种非检疫性害虫,其危险性较少被关注。本文采用多种方法开展风险评估,首先对缝锤小蠹的潜在适生区分布情况进行了预测,并在此基础上进一步对其传入风险、后果进行定性评估,最后对其风险等级进行了定量评估。研究结果表明该虫在我国的适生区主要分布在长江以北的地区,传入风险、传入后果均为"高",风险等级研究表明该虫为高度风险有害生物。

Gnathotrichus materiarius is a kind of foreign forest pest which can be easily carried by imported logs and seriously harming the trees. However,as a kind of non-quarantine pest,its risk was lesser-noticed. Risk assessment was carried out by many ways in this article. Firstly the potential geographical distribution of Gnathotrichus materiarius in China was predicted,based on which the invasive risk and consequence was qualitatively assessed,and the risk grade was quantitatively evaluated at last. The results show that the potential geographical distribution of Gnathotrichus materiarius in China mainly distributed in the north of the Yangtze River,both the class of invasive risk and consequence were ＂high＂,and the risk grade show that Gnathotrichus materiarius was a kind of high-risk pest.