杭州市主要茶叶生产基地环境质量评价

依据无公害食品茶叶产地环境标准,运用单项污染指数法和综合污染指数法对杭州市主要茶叶生产基地大气、水质和土壤环境质量现状进行了监测和评价。研究结果表明,杭州市茶叶生产基地的4项大气质量指标、8项灌溉水质量指标和6项土壤质量指标均未超过国家标准要求,关键控制因子平均含量在标准限量值的1/2以下。按分级标准杭州市茶叶产地环境质量属清洁安全型,完全符合并能满足无公害茶叶生产的要求。

Assessment of environmental quality on main tea production bases of Hangzhou

Environmental quality of atmosphere,irrigation water and soil in main tea production bases in Hangzhou were monitored and evaluated,according to environmental quality standard of non-polluted tea production and the assessment methods of the single and comprehensive pollution index.The results showed that four atmosphere pollutants,eight irrigation water pollutants and six soil pollutants were all in the range of the standard for non-polluted tea production.The average concentrations of the key controlled factors were below the half values of the standards.Contrasting with the grading standards,the environmental quality of the main tea production bases in the area was clean and security,and could totally meet the requirement for the non-polluted tea production.