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IntroductionDendFOHffiussuPeransbrokeOutinShibazhanForestBureau,Daxing'anMount8insRegion,inJuneOf199o.TheinfeCtedareareachedo.8miIlionhm',takingup7o%offorestareaoftheBureau.AcCoFdingtotheinvestigation,DendFOhinussuPeransoccurredinnaturaIhaIfm8tureoryounggrowthforestmainIycomposedoflarch-TheaveragepopuIationdensityoflarvaereached283.5insectAree,andatthemoSt2256inseCts/treeinheaviIydestroyedstands-Den-dFOHmussuPeranshasonelif6circleovertWoyearsinthisarea.StandaFdplOtswereseIected… 相似文献
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