摘要
粉尘、ＳＯ２等的煤烟型复合污染是我国尤其是南方污染区的主要类型。大气监测结果表明粉尘、ＳＯ２和ＮＯｘ均超过国家标准，对中等抗性的柑桔树分别造成了不可见的生理伤害（粉尘已造成可见伤害），并通过对其叶片Ｓ含量和叶上蒙尘量的测定得到进一步证实。它们长期的复合污染加剧了这种伤害，导致桔树生长失调，长势差，桔果产量连年下降，品质衰变。
The injury results on various annual plants caused by compound pollution had been studied extensively by mimic and experimental tests, but few studies concerned with injury diagnosis on plants in natural environment The study conducted at Maoyi Forest Center of Hunan Province in Lengshuijiang city Diagnosis on compound pollution injuring Citrus sp. from SO_2, TSP and NO_x etcwere reported according to monitoring results in pollution spots The results showed the average air concentration of SO_2,TSP and NO_x all surpassed standards of China and other countries, and resulted in physiological and invisible injuies to citrus trees S content of leaves accessed or surpassed the allowable content of citrus sp,and TSP weight on leaves caused obvious visible injury On the basis of preceding report, comprehensive judgement displayed citrus trees in Maoyi Forest Center had been injured by compound pollution from nearby pollution sources
出处
《四川环境》
1998年第1期19-23,共5页
Sichuan Environment
关键词
复合污染
柑桔
生理伤害
大气污染
Injury diagnosis, compound pollution, citrus sp, physiological injury
