Comprehensive risk analysis of fall webworm Hyphantria cunea invasion in Jiangxi Province and its cities
To develop risk-level management and classification strategies for the invasion of the fall webworm Hyphantria cunea,comprehensive risk values for its invasion into Jiangxi Province and its cities were initially determined using an original index system.Subsequently,three additional elements(invasive pathway,diffusion path,and host plant resources)were incorporated into both the criteria and indicator layers of the original system.Some relevant indices were then corrected by using a weighting method.A comparison was made between the comprehensive risk values before and after adjustments,along with changes in risk evaluation rankings.The results showed that including the elements of inva-sive way,diffusion path,and host plant resources significantly affected the outcome of the pest risk as-sessment for the fall webworm in Jiangxi Province.Following the weighting and adjustment based on host plant resources,the overall risk of fall webworm invasion into Jiangxi decreased from the highest risk level to the sub-high risk level.Utilizing the above three elements together for weighted correction,the invasion risk of the fall webworm decreased from the original highest risk level to the sub-high risk level in Shangrao,Jiujiang,Yichun,and Nanchang cities.Similarly,in Fuzhou,Yingtan,and Xinyu cit-ies,the risk level decreased from the highest to the middle,while in Pingxiang City,it decreased from the highest to the low risk level.However,Shangrao remained at the highest risk level,and it was the city with the highest risk in Jiangxi Province.This indicates that the improved method better reflects the actual situation in Jiangxi Province.
万方数据
维普
