Air Quality Issues in Canadian National Parks and North Americal Protected Areas

摘要

Canadian and Americal national park air issues include smoke from campfires and planned ignition prescribed forest fires, vehicle emissions from road and rail traffic passing through parks, airborne pesticides and fertilizers, aerosols causing visibility reduction, acid precipitation, organochlorines, ground-level ozone, ultraviolet B radiation and climate change. Exressed as general categories, the top four air issues for Canadian national parks are 1) toxics, 2) acidification, 3) visibility impairment, and 4) global warming. The National Parks Act contains ample authority to regulate air emissions occurring within national parks, but no such regulations have been established.