山西省松材线虫病媒介及潜在媒介昆虫分布格局特征OA

To clarify the distribution patterns and influencing factors of the vector and potential vector insects of pine wilt disease in the pine forest ecosystem of Shanxi province,the longhorn beetle borers infesting pine forests was investigated from April to September in 2024,using the combination of trap monitoring and sample plot surveys in Qinshui County State-owned DaJian Mountain Forest Farm in Qinshui county,Henghe Forest Farm under the Zhongtiao Mountain State-owned Forest Management Bureau,and forest farms under the Lyuliang Mountain State-owned Forest Management Bureau,located in the"Ji"-shaped bend area along the Yellow River.The results showed that a total of 10 species of longhorn beetles were captured,with the vector insects including Monochamus alternatus and potential vector insects including Monochamus sutor;the number of trapped adults of M.alternatus was significantly positively correlated with the proportion of Pinus bungeana.In the pine forest ecosystem,M.alternatus occupied the smallest niche width,while Arhopalus rusticus occupied the largest niche width,and in mixed forests of Pinus tabuliformis and Pinus armandii,the niche overlapped between M.alternatus and A.rusticus,M.sutor,Acanthocinus griseus was relatively low,respectively.The trapping amount of M.sutor exhibited a"U"-shaped distribution pattern,with the lowest at around 1 100 m altitude,whereas M.alternatus peaked in the 1 000-1 050 m altitude range and then gradually decreased with increasing altitude.These results provide an important theoretical basis for the prevention,control,and monitoring of key longhorn beetle pests and pine wilt disease in the pine forest ecosystem of Shanxi province.