北京地区红脂大小蠹、美国白蛾和锈色粒肩天牛风险评价

该文参照国际上有害生物风险分析方法，结合北京地区城市林业特点，提出北京地区重大外来有害生物风险量化评估体系，并应用该评价体系，进行了红脂大小蠹、美国白蛾、锈色粒肩天牛对北京地区的风险评价.3种有害生物的量化评估值分别为红脂大小蠹2.46、美国白蛾2.30和锈色粒肩天牛2.02，因此对北京地区而言，3种昆虫皆为具高度风险的森林有害生物. 依据对3种有害生物的风险评价结果，进行了广泛的风险交流，结合北京林木保护站对北京地区外来有害生物管理的经验，初步提出了适合北京地区防止外来有害生物入侵定殖的管理措施. 

Pest risk assessment of Dendroctonus valens, Hyphantria cunea and Apriona swainsoni in Beijing area

According to the international methods of pest risk analysis and characteristics of urban forestry in Beijing,a quantitative risk assessment system in Beijing for the main non-indigenous pests was proposed.This system was used to analyze three non-indigenous species, Dendroctonus valens,Hyphantria cunea and Apriona swainsoni. The results show that the risk of these three species in the Beijing area is 2.46, 2.30 and 2.02, all highly risky. Based on the result and extensive risk communications combined with the management experience of the Beijing Forest Protection Station, the authors proposed that effective control measures are adopted to prevent these three pests from entering Beijing area.