【摘要】 苔藓是最敏感的大气污染指示植物之一 ,它具有灵敏、精确和直接等特点。苔藓生物监测主要有化学分析和生态分析等途径。通过特定的取样分析 ,可揭示大气重金属污染的时空变化格局 ,进而评价不同地区或时间的环境变化状况。实测数据的比较分析表明中国的重金属污染问题不容乐观。有必要通过技术、立法和经济等手段来解决这一环境污染问题。更多还原

【Abstract】 Bryophyte is one group of the susceptible indicators monitoring air pollution.As material of heavy metal indication,it is sensitive,accurate,and direct.Technologically two approaches for bio monitoring,e.g.chemical and ecological,have been realized.By means of sampling schemes and analyzing methods,it is available to investigate the spatial,or temporal,variation patterns of heavy metal deposition and evaluate changes in environmental quality among distinct regions or during separate time periods.By comparison of worldwide empirical data,the situation or atmospheric heavy metal pollution in China seems not to be optimistic.The authors suggested that,in order to solve this environmental problem,it is necessary to take means of technollgical,legislative,and economical actions.更多还原