摘要
我国是继欧洲、北美之后 ,在世界上出现的第三大酸雨区。长江以南各省是我国酸雨的主要分布区。酸雨对生态系统的危害日益严重。本文阐述了酸雨对农作物、森林和人体健康的影响。并根据可持续发展的战略思想 ,提出防治对策。
The South China became the third largest region with heavy acid deposition after Europe and North America.The land seriously impacted by acid deposition has extended from 1.75 million km 2 in 1985 to 2.8 million km 2 in 1993.In this paper,it is reported the results of experimental and field studies on the effects of acid deposition on agricultural crops,forests,and human health.Annual cconomic losses of crops and forests due to acid deposition in 11 provinces of South China were estimated to be 4.26 billion Yuan(RMB) and 18.3 billon Yuan(RMB),respectively. Acid deposition in south China was typical“sulfuric acid type”.According to the view of sustainable development,some control strategies were brought forward: 1.Strengthing environmental management,specifying acid deposition control area,controlling and abating the total emission amount of SO 2. 2.Choicing practical techniques of clean coal,such as techniques of washing pyrite off from raw coal,industrial sulfur-fixed briqutte,and abating sulfur from waste gas etc. 3.Developing alternative energy sources to replace coal,including hydroenergy,nuclear,solar and wind energy etc. 4.In acid deposition region of South China,selecting acid-resistant crop and tree species to reduce agriculture and forestry losses,planting more green fertilizer crops,using organic fertilizers and liming to raise buffer capacities of soils.
出处
《云南环境科学》
2000年第A08期1-6,共6页
Yunnan Environmental Science
关键词
酸雨
生态影响
经济损失
防治对策中国
Acid depositopn
ecological effects
economic loss
control strategy
