洛杉矶位于美国加利福尼亚州西南部,是加州第一大城市。20世纪30年代末以来,洛杉矶大都市区发展迅速,随着工业化、城市化的不断推进和人口的急剧膨胀,以雾霾为特征的空气污染问题日益突出。如今,经过数十年的治理,洛杉矶大都市区的空气质量得到了有效改善并积累了丰富的经验。首先,在州政府层面和地方政府层面依法设立强有力的空气质量管理专门机构;其次,设立特别区政府——南海岸空气质量管理区,推动跨区域空气污染治理(南 Los Angeles is located in the southwest of California, California, is the largest city in California. Since the late 1930s, the rapid development of the metropolitan area in Los Angeles, with the continuous industrialization and urbanization and the rapid population expansion, the air pollution characterized by smog has become increasingly prominent. Now, after decades of governance, the air quality in Los Angeles metropolitan areas has been effectively improved and has accumulated a wealth of experience. First, a strong air quality management agency should be established according to law at the state government level and at the local government level. Second, a special district government should be set up to establish a South Coast Air Quality Management District to promote cross-regional air pollution control