城市森林发展与人居环境改善

On Development of Urban Forest as a Means of Improving Habitation Environment of Human Beings

现代城市生态环境不良 ,三废污染严重 ,热岛效应明显 ,城市已成为生命支持系统最差的地方 ,而城市森林具有多种生态功能 ,可明显改善城市的生态环境 ,故建设城市森林为各地和各国所重视。城市森林也为人们回归自然提供了最好的场所。南京建设城市森林时 ,建立的森林群落应以南京地区的顶极群落带有常绿成分的落叶阔叶林为主 ;重视城市森林建设的完整性与系统性 ,满足各类群居民的需要 ;重视绿色廊道的建设 ,在道路两边、河流两侧建立绿化带 ;在城乡结合部发展大片森林 ,保护原有的天然次生林 ;丰富南京的绿化树种 ,引种较耐寒的常绿阔叶树种 ,扩种南京地区特有的珍稀树种。

Modern cities are subject to serious ecological problems at present,such as air and water pollution,heat island effect and so on.Therefore,the life supporting systems in modern cities are not satisfying.For its multiple ecological functions of improving the environment,urban forest has been attracted great attention by many countries and cities.It also provides best area for citizens to return to nature.The paper focuses on the development of urban forest in Nanjing city by analyzing in detail suitable species of trees for different geographical zones.It holds that urban forest should be developed in such a way that an integrated system is formed to meet the needs of different groups of people.