论文范文——行道树调查.docVIP

PAGE 沈阳大学毕业论文 沈阳市主干道路行道树树种调查 专业：园林 班级：2006级1班 姓名：辛扬 目 录 TOC \o 1-2 \h \z \u 引 言 3 1树种调查概况 7 1 .1研究地点自然概况 7 1 .2调查范围 7 1 .3调查内容和方法 8 2结果与分析 10 2 .1调查结果 10 2 .2应用分析 14 2 .3沈阳市行道树存在的问题及建议 15 结 论 20 致 谢 21 参考文献 22 No.PAGE 23 沈阳大学毕业论文 摘 要 本论文运用抽样调查法，调查沈阳市主干道路行道树树种组成及生长、养护状况。调查结果表明： （1）沈阳市主干道路行道树树种现约有33种，隶属15科23属，其中针叶树4种，阔叶树29种。 （2）在配置中以油松、榆树、新疆杨、毛白杨、银杏、国槐居多。火炬树、五角枫等树种是近几年才开始栽植的。此外，近两年沈阳又引进了红肉苹果、糖槭等树种。 （3）生长情况参差不齐，养护管理方式普遍较为粗放，主要在春夏相交的时候相关部门会进行整枝修剪等措施。 （4）城市行道树树种的选用一般遵循气候适宜，土壤适合，功能匹配这三原则。 在调查分类的基础上，提出沈阳市行道树景观规划建议及应用改进对策，其中包括以乡土树种为主，实行适地适树和引入外来树种相结合和以速生树种为主，实行速生树种和长寿树种相结合等，并提出选用的行道树树种，以此做出沈阳市行道树树种的规划建议。 关键词： 沈阳，主干道，行道树，树种调查 Abstract This paper surveys using sampling, trunk roads in Shenyang street tree species composition and growth, conservation status. Survey results indicate that: （1） Shenyang city roads trees are about 32 dependence 15 branch 23 genera, of which 4 species of conifers, 28 species of broad-leaved trees. （2） In the configuration to pine, Elm, White Poplar, Populus, Ginkgo, Sophora japonica. Torch tree, Mono and other tree species is in recent years begun planting. In addition, this year, Shenyang and introduced the red apples, sugar maple, and other species. （3） The growth of ragged, maintenance management generally more extensive way, mainly in spring and summer crossed on the relevant departments will conduct training on pruning, and other measures. （4）The selection of urban trees generally follow climate suitable, soil fit, function matching these three principles. During the investigation on the basis of the classification proposed in Shenyang City trees landscape planning proposals and application solutions, including native trees, implementation of trees and the introduction of foreign species combination and to fast-growing tree, implementation of the fast-growing tree species and longevity combination, and complies with