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该文通过对南岳景区 6个主要景点的松树枯死林分的调查和 49株被蛀干害虫危害的样木的解剖、取样和分析 ,认为景区内松树枯死的主要原因系华山松松茎象Hylobitelussp.和松墨天牛 Monochamusalternatus Hope危害所致。其中华山松松茎象对华山松 Pinusarmandi、黑松 P.thunbergii的危害株率分别为 6 6 .2 %和 2 7.8% ;松墨天牛对华山松、黑松、马尾松 P.massoniana的危害株率分别为 44 .4%、1 2 .3%和 1 0 .7% ,致死株率分别为 2 9.7%、9.6 %和 3.7%。据此 ,对今后控制景区内松树枯死以及对该类害虫制定可持续控制措施提出了建议。
Through the investigation of the dead pine forests in 6 major scenic spots in Nanyue Scenic Area and the anatomization, sampling and analysis of 49 species of wood damaged by pest insects, the main reason for the dead trees in the scenic spots is the pine forest of Hylobitelussp And Monochamus paniculata Monochamusalternatus Hope caused by harm. The damage rate of Pinus armandii to Pinus armandi and P. thunbergii was respectively 6.62% and 7.81%; the damage of Pinus tabulaeformis to Pinus armandi, Pinus thunbergii and P.massoniana was Strain rates were 44.4%, 12.3% and 10.7%, respectively, and the lethal strain rates were 2 9.7%, 9.6% and 3.7%, respectively. Based on this, suggestions are put forward to control dead pine trees in the scenic area and to make sustainable control measures for such pests.