泰安市古树资源及健康影响因素分析

Ancient and Famous Tree Resources and the Health Influence Factors in Tai’an City

通过调查和收集整理泰安古树资源信息,分析古树资源地理分布、树种构成、树龄结构等。泰安市有古树名木18944株,侧柏、油松、国槐和银杏为泰安4大古树树种,分别占古树总量的86.90%、10.24%、0.87%和0.25%。一级、二级、三级古树分别占总量的10.24%、20.75%、69.01%。泰山古树占泰安古树总数的96.05%。泰山景区古树濒危率最高的树种为银杏,濒危率达3.57%,其次是侧柏、油松古树,分别为3.27%、2.66%,国槐濒危率低,为1.59%。泰山古树衰弱死亡原因主要分为自身因素、自然因素和人为因素。自然因素中病虫害是主要因子,占42.8%;其次是人为因素中工程建设造成的,占25.7%;再次是污水污物和林分闭致死,分别占8.6%、6.4%;自然死亡的仅为2.7%。泰安古树保护管理应进一步加强病虫害防治,工程建设尽量远离古树,及时清理古树周边环境。尽可能降低自然危害,避免人为干扰,还古树健康。

The research analyzed the geographical distribution,tree species composition and tree age structure of ancient tree resources in Tai’an City through investigation and collection of ancient tree resources.18944 ancient and famous tree were found out in Tai'an City.The main four species were Platycladus orientalis,Pinus tabulaeformis Carr,Sophora Japonica and Ginkgo biloba,accounting for 86.90%,10.24%,0.87%and 0.25%respectively.The first,second and third class level trees accounted for 10.24%,20.75%and 69.01%respectively.The ancient trees in Mount Tai accounts for 96.05%of the total number in Tai'an City.The species with the highest endangered rate of ancient trees in Mount Tai scenic area was Ginkgo biloba,with the endangered rate of 3.57%,followed by Platycladus orientalis,Pinus tabulaeformis Carr,with the endangered rate of 3.27%and 2.66%respectively,and Sophora Japonica with the endangered rate of 1.59%.The main reasons for the decline and death of ancient trees in Mount Tai mainly included self-factors,natural factors and human factors.Diseases and insect pests belonging to natural factors were the main factor,accounting for 42.8%.Secondly,the engineering construction in human factors accounted for 25.7%.Then,sewage and canopy closure accounted for 8.6%and 6.4%respectively.Natural deaths only accounted for 2.7%.A series of management on protecting ancient trees in in Tai'an City should be further strengthen to ensure health status,including prevention and control of diseases and insect pests,avoiding engineering construction and human disturbance,cleaning up the surrounding environment,reducing the natural hazards.