通过生动的描写和细腻的情感，作文能够让读者产生共鸣，我们在写作文时，要注意使用过渡词，使文章的衔接更加自然，以下是360好工作网小编精心为您推荐的空气污染作文7篇，供大家参考。
空气污染作文篇1
所谓“大气污染”是指有害物质进入大气，对人类和生物造成危害的现象。如果对它不加以控制和防治，将严重的破坏生态系统和人类生存条件。
大气污染有的是由于森林火灾、火山爆发等自然因素造成的；有的则是由汽车尾气、工业废气、烟尘、爆炸等人为因素造成的，其中人为因素对大气的污染是主要的，尤其是现代交通运输和工业生产对城市大气造成的污染更为严重。因此人们对大气污染问题越来越关切。
造成大气污染的物质有：一氧化炭co、二氧化硫so2、一氧化氮no、臭氧o3以及烟尘、盐粒、花粉、细菌、苞子等。
距地面几十米的近地面层大气，是人类和生物的生存空间。这一层空气质量的好坏直接影响着人类的生产和生活。近年来，由于交通运输业的发展，排放出的大量汽车尾气与空气中的一些物质成分发生化学反应，生成对人体十分有害的一氧化氮、臭氧、乙醛等新物质。
悬浮在大气中的各种气溶胶粒子，按其大小可分为降尘和飘尘。其中降尘的`粒子较大，直径大于10微米，它的自然沉降率较快。它与人类支气管炎的死亡率和农业减产有很大关系；飘尘粒子较小，直径一般在0.1—1.0微米。其自然沉降率很小，故悬浮在大气中的生命史较长。随着粒子的减小有毒元素的浓度将增加。通常小于0.3微米的飘尘能吸入肺泡，如长期积累，会损害呼吸机能，引起哮喘、肺气肿、矽肺和肺癌等不治之症。由于飘尘的污染期长和毒性强，因此它的危害性大。当大气中气溶胶粒子增加到一定程度以后，就会出现烟雾弥漫，能见度降低，太阳辐射减弱等现象。
近地面层大气污染程度与气象条件密切相关，存在着明显的季节变化和日变化。一般冬季的早晨和傍晚在无风的天气条件下空气污染最为严重。夏季由于空气层结不稳定，污染物易向高空扩散，因此一般污染不会太严重。
空气污染作文篇2
the earth on which we live is to suffer from serious air pollution. the exhaust gas from the factory, the burning of waste, car exhaust and other pollution in the atmosphere are the source of trouble. the time of the invasion of the respiratory tract and lung, the incidence of respiratory rate increased year by year.
when the air is polluted slightly, inhaled air can be part of the dust removal by nasal cavity in the nose, the nasal mucus in the bronchial mucus and the dust adhesion. tracheal and bronchial cilia in tens of millions of their root, about 12 times per second to swing, like a "cleaner" from the bottom up sweep mucus in the respiratory tract, and throat, cough up through in vitro.
when the air is seriously polluted, the purification effect of respiratory tract will be reduced, and even lost completely. in this case, respiratory tract and lung is vulnerable to the invasion of bacteria and diseases.
due to various reasons, the air pollution is getting worse. if you can not solve the problem of air pollution, i am afraid it one day, humans can only live with a mask.
空气污染作文篇3
once man did not have to think about the protection of his environment. there were few people on the earth, and natural resources seemed to be unlimited.
today things are different. the world has become too crowded. we are using up our natural resources,and polluting our environment with dangerous chemicals. if we continue to do this, human life on earth will not survive.
we realize that if too many fish are taken from the sea, there will soon be none left. yet,with modern fishing methods, more and more fish are caught.we know that if too many trees are cut down, forests will disappear. yet, we continue to use powerful machines to cut down more and more trees. we see that if rivers are polluted with waste products, we will die. yet, waste products are still put into rivers.
we know that if the population continues to rise at the present rate, in a few years, there won't be enough food.what can we do to solve these problems?
if we eat more vegetables and less meat, there will be more food available. land for crops feeds five times more people than land where animals are kept.
our natural resources will last longer if we learn to recycie them.
the world population will not rise so quickly if people use modern methods of birth control.
finally, if we educate people to think about the problems we shall have a better and cleaner planet in the future.
空气污染作文篇4
although some city's air quality is improving, but it is estimated that the number of deaths due to air pollution each year up to 358000 people.
according to the self assessment, air quality in the recorded data of 338 cities, two-thirds is considered contaminated, two-thirds of which was rated as moderate or severe pollution.related to air pollution in china, breathing and heart disease is the top killer.thirty percent for acid rain place.the chinese government's environmental regulations are thought to have 20 years behind the united states, 20 to 30 years behind that in europe.and because of car usage increases, a true problem is worsening.
draw lessons from the beijing olympic games and shanghai world expo and the guangzhou asian games air quality guarantee of successful experience, promote the pearl river delta regional environmental cooperation, the implementation of regional air pollution defense measures from spreading.host during the universiade held in shenzhen air pollution index is less than 30, the air quality is superior, the successful completion of the "green universiade" air quality security tasks.
空气污染作文篇5
air pollution comes from factories, power stations and cars. chemicals in the smoke from power stations cause a lot of damage. they can travel hundreds of miles in the wind before falling to the ground in the rain. but this "chemical rain" gradually destroys trees in the forests and kills fish in the lakes. in germany, over 50% of the country＇s trees had been damaged by the year 1986.time and time again there are serious accidents that pollute the air. in 1986 there was a bad accident at a nuclear power station in russia. a cloud of radiation crossed the whole of europe. it is said that 125,000 people died in russia as a result of illnesses caused by this accident.in 1984 there was a serious accident at a factory in india and a cloud of dangerous gas covered the town of bhopal. over 2,500 people were killed that night, and hundreds of thousands of people were injured. many of the injured lost their sight.六级英语作文:空气污染(air pollution)
air pollution is one of the major problems of the modern world. a great deal of energy is needed to run the factories of modern industrial nations. automobile, trains, planes and busses need energy, too.
nearly all of this energy is produced by burning fuels. the burning produces wastes, some of which remain in the air, causing air pollution.scientists are finding ways to stop air pollution especially in big industrial areas and densely-populated cities. they are studying new ways of generating electricity that may be less damaging to the environment. in the meantime, many power plants are being modernized to give off less polluted material. also, engineers try to design and locate new power plants to do minimum damage to the environment.
however, it may be that we still have a long way to go before we have a "clean" world. nearly all of the countries are trying hard to prevent and control air pollution.
there indeed seems to be no end to tasks that environmentalists will be required to do. people will continually find new ways to control pollution.
空气污染作文篇6
我们生活在钢筋水泥的森林里，我们对生机勃勃的树木远离了。现在的交通工具、建筑物或复杂的机械都给空气带来极大的污染，它们虽然都给我们带来方便，但大家有没有想到，它们也会污染空气对人体有害的。
此时此刻某些科学家已经研制发明出许多可以净化空气的物品和机器，人们可以利用这些东西将空气中的有害物体吸走，然后将新鲜空气排出，让空气更加清新。可我们人类不能依赖这些工具，并不是有了这些工具就可以乱砍滥伐树木。因为每一棵树木都是对我们很重要的，没有大树保护土壤，泥土就会被河流冲走；没有大树美化环境，人们就生活在乌烟瘴气的.地球里；没有大树维持生态环境，动物就会渐渐稀少……这样一来再多机器也没用。大家看，现在空气污染这么厉害，大家也听说过“空气污染，全球变暖”吧！如果空气污染得太厉害的话，地球就会逐渐暖和，那时南极和北极的冰川就会融化，我们的家园会被淹没，这样整个地球都是茫茫大海，我们就会像神话一样，乘坐着“诺亚方舟”在海上漂流。所以说净化空气对我们很重要，我们要多植树让空气更清新。
让我们共同去植树，保护美好的大自然，爱护一草一木，让沙漠中的绿洲增加，大家行动起来吧！
空气污染作文篇7
this year, with the high speed development of economy in our country, the improvement of people's living standards. in this environment, the deterioration of ecological environment is gradually in our country.
in the case of priority to the development of the economy. but at the expense of the environment. we are in urgent need to change the status quo. in the past, in order to develop the economy, our country's forest area is not reduced, cut down trees. soil and water loss. desertification is expanding fast. amidst the city, and farmland. every spring, beijing sandstorm struck by the mongolian plateau. pm2.5 table. chemical companies in order to save costs, will not be processed into the river sewage, and makes the water undrinkable. now almost impossible to find not polluted river in china.
we should realize the seriousness of the problem now. effective measures must be taken. first, change ideas, should pay more attention to environmental protection. should the economy and environment simultaneously. now in china is taking measures to change the status quo. in the second. , through legislation, our country has now been made in the history of the most severe "environmental law" in the third, the government's regulation. environmental protection bureau should really law enforcement. i believe our country environment will get better.
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