天水市秦州区古树资源分布及生存生长现状分析

廖永峰 王立

摘 要：采用实地调查与访谈相结合的方法，对天水市秦州区古树种类数量、资源分布、古树等级、生长势、生长环境等进行了全面的普查和分析。结果表明：天水市秦州区共有古树479株，分属24科31属42种，其中，一级古树186株，占比38.83%;二级古树90棵，占比18.79%;三级古树203棵，占比42.38%;优势种为侧柏[Platycladus orientalis （Linn.） Franco]和国槐（Sophora japonica Linn.）;生长正常的古树有51株，占比11%;生长衰弱的古树有336株，占比70%;濒危的古树有92株，占比19%;无死亡古树;古树生长环境：良好187株，占比39.04%;中等163株，占比34.03%;差的有129株，占比26.93%。树高、冠幅、胸围/胸径分别集中在1～27m、1.0～22.5m、41.5～440.0cm。

关键词：古树;资源分布;生长势;生长环境

中图分类号 F326.2文献标识码 A文章编号 1007-7731（2020）09-0056-05

Resources Distribution and Growth Analysis of Ancient Trees in Qinzhou District of Tianshui City

Liao Yongfeng1，2 et al

（1College of Forestry of Gansu Agriculture University， Lanzhou 730070， China）

Abstract： In this study， the ancient trees resources in Qinzhou District were investigated through field survey and interview. The number of tree species， resources distribution， trees class， growth performance and growth environment of ancient trees were analyzed. The results showed that there were 479 ancient trees belonging to 42 species in 31 generus 24 families. There were 186， 90， 203 ancient trees under first， second and third class which took up 38.83%， 18.79% and 42.38% respectively. The dominant species were Platycladus orientalis （Linn.） Franco and Sophora japonica Linn. There were 51 ancient trees with normal growth， which occupied 11%， 336 ancient trees with weak growth and 92 endangered ones， 70% and 19% respectively. There were no dead ancient trees. There were 187 ancient trees with optimal growth environment， 163 trees with normal growth environment and 129 ones with poor environment， occupying 39.04%， 34.03% and 26.93% respectively. Tree height was focused between 1m and 27m， crown width was focused between 1.0m and 22.5m and DBH was focused between 41.5cm and 440.0cm.

Key words： Ancient Trees; Resources Distribution; Growth Performance; Growth Environment

古樹是自然界重要的财产，它具有非常独特的自然历史价值，更具有丰富多彩的人文价值，蕴含着悠久的历史文化内涵[1]。古树是城市历史文化和生态环境的重要组成部分[5]，开展古树资源调查对于古树的保护和利用具有积极的作用。分析古树的地理分布位置和特征，对于了解古树生长环境、更好地开展古树保护具有重要的意义。随着城市化进程的加快，给古树的保护带来了极大的挑战。天水市森林资源丰富，古树种类繁多，为增强城市文化软实力提供了强大的资源支持。庞大的古树资源进一步彰显了该市的浓厚历史文化气息。作为历史文化底蕴深厚的天水市，在建设生态文明和美丽城市的进程中，古树资源的保护日益受到关注，其相关研究以及保护工作已成为当前的热点研究领域[2]。本……