根据大量资料统计说明：成都市随着经济发展，环境有恶化趋势，人口的迅速增加，建筑面积的扩大，导致人均公共绿化面积减少。从６０年代开始，市区雾日增多、日照百分率降低、连阴雨次数、洪涝发生次数逐渐增多，而且火灾发生次数逐年增多，市区重于效区。城市环境必须保持经济、社会与生态环境协调发展。 According to a large amount of statistics, it shows that with the economic development in Chengdu, the environment has deteriorated. The rapid population growth and the expansion of the construction area lead to a decrease in the per capita public afforestation area. Since the 1960s, the foggy days in urban areas have increased, the sunshine percentage has dropped, and even the number of rainy days and floods have gradually increased. Moreover, the number of fires has been increasing year by year, and the urban areas are heavier than the effective areas. Urban environment must maintain the coordinated development of economy, society and ecological environment.