大树引入城市,加快上海绿化建设步伐

The introduction of Big Trees into Shanhai City to Accelerate the Greening Process

大树引入城市是从上海的实际出发，快速发展上海绿化，改善上海城市生态环境，提高上海城市绿化质量的一条重要而有效的途径。文章介绍了上海实施大树引入城市的背景、对策和措施、苗木来源以及产生的效果，对大树引入城市应该引起注意的几个问题提出了意见各地必须因地制宜、量力而行。

The introduction of big trees into Shanghai, is an effective way to promote the process of greening process and improve the environment quality. This paper induce the background, strategies,methods and sources of trees, and the effect. Some problems associated with the introduction of big trees are presented.