臭氧洞的形成、危害及对策

The Harms and Formation of the Hole in the Ozone Layer and the Necessary Aid for It

十多年前在南极上空发现了臭氧洞 .位于 10 - 30km高空的臭氧层能吸收太阳的紫外线辐射 ,过多的紫外辐射能引起人类和其他动物的白内障、皮肤癌并减弱其免疫功能 ,而且对植物也有损害 .1987年在南极地区进行的收集数据的飞行证明氟氯烃类物质与臭氧层破坏之间存在着联系几乎是确定无疑的 .为了解决臭氧洞的威胁问题 ,目前国际社会和各国领导人都正在采取措施寻求有利于环境的氟氯烃代用品 ,以便尽早停止全部氟氯烃类物质的生产 .

A seasonal hole in the ozone layer was found over Antarctica more than 10 years ago . That was worrisome: Ozone between 10～30 miles up absorbs the sun's ultraviolet radiation, more of which would lead to cataracts, skin cancers and weaken immune systems in humans and other animals, and damage to plants. Data-gathering flights in Antarctic in 1987 made the connection between CFCs and ozone destruction all but certain. In dealing with the threat of the hole in the ozone layer, the world community and leaders of all nations are taking steps to find environmentally acceptable substitutes for CFCs in order to phase out all CFCs production as soon as possible.