树种组成对松墨天牛成虫种群动态的影响

Effect of different forest stand structure on adult population dynamics of pine sawyer beetles(Monochamus alternatus)

2015年4—10月,调查泉州台商投资区6种不同树种组成林分内松墨天牛种群数量和动态。结果表明:不同树种组成对松墨天牛成虫种群数量的影响不同,松墨天牛的诱捕数量为:马尾松纯林(10马)>马尾松阔叶树混交林(5马5阔)>湿地松纯林(10湿)>马尾松阔叶树混交林(2马8阔)>湿地松阔叶树混交林(5湿5阔)>湿地松阔叶树混交林(2湿8阔);泉州台商投资区松墨天牛1 a发生2个高峰期,马尾松林第1个高峰期出现在5月中旬,第2个高峰期出现在7月中旬;湿地松林第1个高峰期出现在6月上旬,第2个高峰期出现在7月下旬至8月上旬。

During April to October 2015, the amount and population dynamics of adult pine sawyer beeries （Monochamus alterna- tus ） under six forest stand structures inside the Quanzhou Taiwan Residents Investment Zone were investigated. The results showed that dif- ferent forest stand structures significantly affected the adult populations of pine sawyer beeries. The number of adult pine sawyer bee- tles trapped was： pure Pinus m^soniana forest （ 10 P.m. ）〉P.massoniana forest mixed with broad-leaved trees （5 P.m. and 5 broad leaf） 〉pure P.elliottii forest （ 10 P.e. ） 〉P.massoniana forest mixed with broad-leaved trees （ 2 P.m. and 8 broad leaf） 〉P.elliottii for- est mixed with broad-leaved trees （5 P.m. and 5 broad leaf）〉P.elliottii forest mixed with broad-leaved trees （2 P.e. and 8 broad leaf）. Two peaks of pine sawyer beetles were observed in a year in Quanzhou Taiwan Residents Investment Zone. In P. massoniana forest, the first peak of pine sawyer beetles occurred in mid-May and the second peak of pine sawyer beetles occurred in mid-July. In P.el- liottii forest, the first peak of pine sawyer beetles occurred in early June and the second peak of pine sawyer beetles occurred in late July to early August.