城市园林有害生物的现状存在问题及对策论文.doc

目 录 前言…………………………………………………………4 第一章 有害生物的现状………………………………4 第二章 问题分析.……………………………………5 2.1 绿化格局调整绿化植物的不城市生态恶化气候异常加强养护管应用必威体育精装版摘要：近年来，我国城市绿化取得了前所未有的成就，城市环境质量明显改善。各城市都将园林绿化作为经营城市的重要手段，市民是直接受益者。在领导的重视和园林工作者的辛勤工作下，各城市的空气质量、环境质量和市民的活动场所均大为改观。但在城市化迅速发展进程中，人类也不同程度地改变和破坏了生物之间的生态平衡，引进了许多外来植物，建造了许多新的植物类群，形成了新的城市植被和园林植物格局，在其发展过程中不可避免地出现了一些偏离初衷的不和协音符，导致了园林植物中有害生物的严重发生，造成了经济上的巨大损失。而这种损失在时间上是不可弥补的，该损失目前还没有得到足够的重视。由于园林植保工作具有前瞻性的特点，因此决定了应以“预防”为主，“治疗”为辅。? 关键词：城市园林 有害生物 问题分析 对策 Abstract: In recent years, our country city afforestation has achieved the unprecedented achievement, the urban environment quality distinct improvement. Various cities manage the botanical garden afforestation achievement urban the important means that the resident are the direct beneficiary. In the leadership value and under the botanical garden worker’s hard work, various cities’ air quality, the environment quality and resident’s activity venue greatly to have a new look. But in the urbanized rapidly expand advancement, the human also varying degree changed and destroyed between the biological ecological equilibrium, has introduced many introduced plants, has constructed many new plant class groups, has formed the new urban vegetation and the ornamental plant pattern, presented some deviation original intention inevitably in its developing process not the harmonious cooperation note, has caused in the ornamental plant the harmful biological serious occurrence, has created in the economical heavy loss. But this kind of loss in the time is unredeemable, this loss had not obtained the enough value at present. Because the botanical garden plant protection work has the forward-looking characteristic, therefore decided should by “the prevention” primarily, “treatment” for auxiliary.?  Key word: Urban botanical garden Harmful biology Problem analysis Countermeasure???  前 言 近年来，我国城市绿化取得了前所未有的成就，城市环境质量明显改善。各城市都将园林绿化作为经营城市的重要手段，市民是直接受益者。在领导的重视和园林工作者的辛勤工作下，各城市的空气质量、环境质量和市民的活动场所均大为改观。 但在城市化迅速发展进程中，人类也不同程度地改变