对众多发展中国家的城市来说,人口密集、住房紧张、交通拥堵等等都已成为迫不及待需要解决的问题,而在这其中,如何治理城市的环境卫生以及有效加强绿化力度,都是提高城市综合指数的关键所在。最近在墨西哥首都,一项低成本的规划设计将一处城市垃圾场成功地变为都市花园,为现 For many cities in developing countries, dense population, housing shortage, traffic congestion and so on have become the problems that can not be solved. In this regard, how to control the urban sanitation and effectively strengthen the greening are all the measures to improve the urban The key to the composite index lies. Recently in the Mexican capital, a low-cost planning and design successfully transformed a city dump into a city garden,