灵空山红脂大小蠹发生与林分及其立地条件的关系

通过调查灵空山地区不同立地条件、不同林分油松的受害情况,探讨红脂大小蠹发生危害程度与坡向、坡位、林分组成、林龄、是否割脂间的关系。结果表明:坡向、坡位、林分组成、林龄、割脂对红脂大小蠹的危害均有显著影响;且以阳坡重于阴坡,坡下重于坡上,林缘重于林内,纯林重于混交林,成熟林重于幼龄林,割脂重于未割脂。

Research on the Relationship between Red Turpentine and the Type of Forests

After the investigation of the different site conditions and the destroying degree of the different types of Pinus tabulaeformis forests,the results showed that the slope direction and the slope position,the types of forests,the ages of trees and cutting resin had the significant effect on the damage made by Red Turpentine Bark Beetle,the damage on adret was worse than on ubac,the basement of slope than the upside of the slope,the border than the interior,the pure forests than the mixed forests,the adult trees than the young trees and cutting resin than normal resin.