天然鱼鳞云杉枯死现状调查及防治对策

针对长白山区优势树种之一的鱼鳞云杉枯死状况,对长白县境内的天然鱼鳞云杉进行踏查、清理和分析。方法是在长白县5个国有林场施业区内的天然林中随机选取标准地块,调查林内中、近成熟林立木枯死数量、树种以及风到木、濒死木株数,受侵害林分面积、蓄积等因素,从中分析立木枯死原因以及分布状况,在防治过程中找到并制定行之有效的防治措施及对策,采取先进的聚集信息素诱捕法监测、诱杀小蠹虫等危害林木虫害。探讨运用防治监测、预防以级结合伐区作业生产过程中结合营造培育复层异齡林等措施,改善林分卫生状况,进一步提高林木抗病虫害能力的途径。

Investigation and Countermeasures of Current Dead Status of Natural Picea jezoensis

Aiming at the current dead status of fish-scale spruce,as one of the dominant tree species in Changbai mountain,investment,cleaning and analysis were conducted to the species in the area of Changbai county.In natural forest of five state-owned forest farm in the area,standard plots were randomly selected to be surveyed.In the plots,the number and species of dead trees that is nearly mature,the number of trees blown down by wind,and the area of encroached stands and volume are all investigated to analyze the...