随着全球气候变暖,以及人为因素等影响,大片树木被坎伐,人们开始越来越重视生存环境等问题。而城市绿地不仅能够营造优美的城市景观,为广大居民提供良好的生活空间,而且可以改善大气碳氧平衡、降温、增湿、滞尘等,发挥巨大的生态效益。本文从城市绿化建设的实际出发,从科学技术、政策、管理几个方面来保障绿化的实效性。希望本文的论述能为城市绿化建设带来些许帮助。 With the global warming and the impact of human factors, large trees have been banned, people began to pay more and more attention to the living environment and other issues. The urban green space not only can create a beautiful city landscape, provide a good living space for the majority of residents, but also can improve atmospheric carbon and oxygen balance, cooling, humidification, dust and so on, to play a huge ecological benefits. In this paper, from the actual construction of urban greening, from the aspects of science and technology, policy, management to protect the effectiveness of greening. I hope this article’s discussion can bring a little help to the urban afforestation construction.