The researchers used hospital discharge data from the State of California, air pollution data from the California air Resources Board, and demographic data from the 1980, 1990, and 2000 us census.
Still facing severe environmental resources situation, China must take effective and feasible measures, implementation of the total discharge of pollutants to control and reduce.
面对依然严峻的环境资源形势，中国必须采取有效可行的措施，实现污染物排放总量控制和削减。
3
It is recommended to strictly control total pollution discharge, adjust industrial structure, emphases integrated water resources management and make joint for pollution prevention.