摘要
2019年4月22日—5月19日,在长白山自然保护区4个研究区域内共调查553株样木中落叶松毛虫越冬代幼虫的上树数量。长白山自然保护区落叶松毛虫越冬代幼虫上树频度呈“倒J”形分布,长白落叶松、红松上落叶松毛虫越冬幼虫具有相似的虫口分布格局。落叶松毛虫寄主树种间幼虫虫口密度差异极显著。长白松上虫口密度显著高于长白落叶松和臭冷杉上的虫口密度。长白山自然保护区落叶松毛虫在4月下旬开始上树,5月上旬达到上树高峰期,5月中旬已完成上树。
From April 22 to May 19 in 2019, the number of overwintering Dendrolimus superans larva on 553 tree samples in four research areas of Changbai Mountain Nature Reserve was investigated. The frequency distribution of the number was “inverted J” shape. The overwintering Dendrolimus superans larvae on Larix olgensis and Pinus koraiensis had similar population distribution patterns. There was significantly difference in the population density of Dendrolimus superans larval among host species. The population density of Dendrolimus superans larval on Pinus syluestriformis was significantly higher than that on Larix olgensis and Abies nephrolepis. Dendrolimus superans larvae began to climb trees in late April, reached the peak in early May, and finished climbing trees in mid-May in Changbai Mountain Nature Reserve.
作者
崔志刚
林姝含
CUI Zhigang;LIN Shuhan(Nature Conservation Management Center of Changbai Mountain,Yanbian 133613,China;Forestry College of Beihua University,Jilin 132013,China)
出处
《吉林林业科技》
2022年第2期24-28,共5页
Journal of Jilin Forestry Science and Technology
关键词
落叶松毛虫
幼虫
时间动态
长白山
Dendrolimus superans
larvae
temporal dynamics
Changbai Mountain
