麦秀林区光臀八齿小蠹风险分析报告

Risk Analysis Report of Ips nitidus Eggers in Maxiu Forest Area

光臀八齿小蠹Ips nitidus Eggers是黄南乃至青海天然林区内危害的主要优势种,主要危害风倒木、衰弱木、濒死木等,很少危害健康木,通过对光臀八齿小蠹的定性和定量分析,其风险评估值R=1.49,在麦秀林区属于低度危险的林业有害生物,是云杉属树种的重要有害生物,在麦秀林区有明显扩散蔓延趋势,对麦秀林场云杉属树种构成严重的潜在威胁。

Ips nitidus Eggers is the main dominant species in the natural forest area of Huangnan and Qinghai,which mainly harms the fallen wood,debilitating wood,dying wood and so on,but rarely endangers the healthy wood. The qualitative and quantitative analysis of this species is carried out. The risk assessment value R = 1. 49 is a low risk forest pest in Maxiu forest area,which is an important pest of spruce species,and has a tendency to spread obviously in Maxiu forest area,which poses a serious potential threat to spruce species in Maxiu forest farm.