大连地区外来物种火炬树的调查研究

Investigation and research of exotic species of Rhus typhina in dalian area

火炬树作为我国众多外来物种之一的有意引进的外来植物种,对其入侵方面的研究一直存在争议.通过样方法、访谈调查及实地调查等方法,对分布在大连地区的大学校园、居民小区、自然保护区、高速及市区行道两侧等区域的火炬树进行无性繁殖方面的调查,并结合火炬树的掘根调查分析其种植及生长状况,研究了大连地区外来植物火炬树的入侵性.结果表明,大连地区的火炬树分布广且替代本地树种严重,主要通过无性繁殖扩散,形成区域性的优势物种,已有入侵的趋势.最后针对大连地区火炬树的种植及分布特点提出合理应用的建议,控制火炬树的扩散入侵.

As one exotic species in China,Rhus typhina has been disputed in the field of invasion.The study was mainly aimed at the invasion of the exotic plant Rhus typhina in Dalian,through sample method,interviewing survey and field survey etc.,to conducted an investigation on the distribution of Rhus typhina in the Dalian area,including the University campus,residential area,Natural Reserve and the both sides of the high speed,urban roads and other areas etc.And we combined with the digging root investigation of Rhus typhina,then analyzed its planting and growth status.The result shows that Rhus typhina in Dalian area is widely distributed and substituted local tree species seriously.It is mainly propagated by asexual propagation,forming a regional dominant species,and there is a trend of invasion.Finally,the author puts forward the suggestion of rational application of the Rhus typhina for the planting and distribution of Rhus typhina to control the invasive invasion of Rhus typhina in Dalian.