城市绿化的主体是树木，城市绿化的作用是有目共睹的。我们呼唤城市绿化，我们期望生活工作在绿色环境之中．我们更应该去爱护我们拥有的绿化环境，为绿化的主体——树木创造良好的生长环境。因为城市绿化树木的生长状况直接受到城市环境各方面的影响。如果不考虑这些因素，城 The main body of urban greening is trees, the role of urban greening is obvious to all. We call for urban greening, and we expect life to work in a green environment. We should even care for the green environment we have and create a good environment for greening the mainstay of trees. Because the growth of urban greening trees is directly affected by all aspects of the urban environment. If you do not consider these factors, the city