【摘要】 文章论述了国内外城市森林的兴起、概念、功能和分类，介绍了国外部分国家的城市森林，并探讨了其发展趋势，结合郑州市的实践，提出我国城市森林存在的问题与持续发展对策。更多还原

【Abstract】 In this paper,the author reviews the rising ,Concept,function￣1 of Urban Forestsand clarification of Urban Forests ,introdules the Urban Forestry in Amercia , Germannyand Singapore and discusses their developing trends in the future. Combining the investiga-tion of Zhengzhou city,the author puts forward the major existing problems and strategiesfor sustainable development of the Urban Forests of our country.更多还原