松墨天牛成虫林间种群数量变动规律的初步研究  

Studys on the Change Law of Population Dynamics of Monochamus alternatus Hope Adults in Forests

作　　者：杨爱民 

机构地区：[1]三明市三元区林业局,福建三明365001

出　　处：《福建林业科技》2004年第2期62-64,共3页Journal of Fujian Forestry Science and Technology

基　　金：福建省重大科技基金项目(2000-Z028);三明市科研课题资助项目

摘　　要：松墨天牛成虫在福建闽北1a有2次发生高峰期,分别在4月下旬至5月上旬和6月上旬;成虫的危害高峰期在5月中旬至6月上旬。林分在时间序列上的被害程度与成虫的习性关系密切,而与林间成虫的数量没有显著相关。成虫在不同林分结构中数量消长规律基本一致,但其虫口密度差异较大,马尾松纯林虫口密度大于混交林。成虫在林间的活动与温度、降雨、风速关系密切。Two peak occurrence periods of Monochamus alternatus Hope adults in north Fujian every year,one is from the last ten days of April to the first ten days of May,the other is in the first ten days of June.The adults' peak damage period is from the mid-May to the first ten days of June.The damaged extent to the stands has a close relationship to the adult's habit but no obvious relationship to the number in the forest.In the different stand constructions,the change laws of population dynamics are nearly the same,but their population densities are different:the density in the pure forest of Pinus massoniana Lamb.is larger than the one in the mixed forest.Additionally,the population dynamics of the adults in forests are relevant to the temperature、rainfall and wind speed.

关 键 词：松墨天牛 成虫 种群数量 变动规律 虫口密度 

分 类 号：S763.38[农业科学—森林保护学]