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空气污染英文短文通用20篇

麦草、煤块和豆子的故事主要讲了麦草、煤块和豆子侥幸“逃生”的故事,这三个死里逃生的小伙伴经过小溪时,麦草被烧断了,煤块掉入水中送了命,豆子因为嘲笑他们而折断了腰。故事的发展究竟怎样呢,我们一起来看看吧~这里小编给大家精心整理了关于空气污染英文短文优秀作文,供大家阅读参考,希望能帮助到您。

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篇1:2024关于解决空气污染英语作文

全文共 1286 字

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It is reported that ten big cities in China are being ranked among the top twenty cities with the highest pollution index in the world. This means it is high time we did something to bring the situation under control.Many factors are contributing to the deteriorating situation: industrial wastes pumped into the air, the lakes and rivers; a increasing number of automobiles crowding into the streets; the widespread use of plastic bags etc.

To my view, stiffer laws and regulations must be implemented to check pollution. Industries that release wastes without permission should be heavily fined. Cars should be equipped to minimize the exhaust they release into the air. And the use of plastic bags and disposable meal boxes should be banned. What’s more, the media should play an important role in implanting a sense of environmental consciousness into people’s mind. If everybody works toward a common goal of making the environment better, we can create a cleaner and lovelier world for us and for the coming generation.

据报道,在中国十个大城市被排名前二十的城市污染指数最高的国家。这意味着是时候我们做了一件控制局势。许多因素导致恶化的形势:工业废物注入空气,湖泊和河流,越来越多的汽车涌入街头,塑料袋的广泛使用等。

就我看来,更严格的法律法规必须实现检查污染。释放废弃物未经许可的行业应该是严重的罚款。汽车应该配备最小化他们释放的废气到空气中。和使用塑料袋和一次性餐箱应被禁止。更重要的是,媒体应该发挥重要作用在植入的环境意识到人们的心灵。如果每个人都朝着一个共同的目标工作的环境更好,我们可以创造一个更清洁和更可爱的世界,为我们和未来的一代。

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篇2:空气污染危害大

全文共 552 字

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我的家乡——大连,是座美丽的城市。听爸爸说,以前的大连是个环境优美,空气清新的城市,空气中到处弥漫着海洋的味道,夏季的雨后,经常能看到美丽的彩虹如七彩桥一般挂在天边。我在家里看到过很多爸爸小时候的生活照片,在照片的背景中,我看到天空万里无云,马路上很少有各式各样的机动车,那时人们的交通工具主要就是靠公共汽车,环境确实比现在好多了。

现在家乡的车辆增多了,每天都有成千上万辆汽车行驶在马路上,这些汽车排放的尾气,不仅破坏了环境,同时也危害了人们的身体健康。我听广播说,汽车排放出的尾气使我们的城市变暖了,而且这些气体悬浮在城市上空很难消散,汽车尾气中还有大量的一氧化碳和二氧化碳,这些气体都是对人体有伤害的,如果被人们吸到体内,就会引起肺部的很多疾病呢。怪不得每天早上我上学的时候,天空中总是灰蒙蒙的一片,很难看到早上初升的太阳,雨后的天空中也没有彩虹,湛蓝深远的天空消失不见了,就连叽叽喳喳的小鸟也不愿意来到这样的地方,只有在儿歌中才有“太阳当空照,花儿对我笑,小鸟说……”的景象。

你知道吗,大连她在哭泣,她哭人们这样伤害她,破坏她,把她原本美丽的面貌变成了这样丑陋。我建议有车的家庭要减少车辆的使用,尽量步行或坐公交车,这样才能让我们的城市空气更清新。

让我们行动起来吧!美化环境,从我做起,从现在做起!

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篇3:白色污染的英文作文

全文共 934 字

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white pollution refers to plastic pollution. it is a new member of pollution family, but it grows fast. unrecyclable plastic lunch boxes line along railroads. plastic shopping bags dance in the wind. when leaders are busy mapping out blueprints for the future, one colour white from white pollution becomes their headache.

everything in the life circle deserves its place on earth. if we continue using plastic lunch boxes, shopping bags and other unrecyclable plastic productsmwhat would happen ⅱ one day they might bury us in an ocean of white rubbishg then the earthmour common home, would be a dustbin.

to prevent this nightmare from coming true, governments need to work closely with each other and back up their verbal commitment by actions. however, it is not enough only to ask what governments can do to get rid of white pollution, we must ask ourselves what we as individuals can do to colour the earth green instead of white.

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篇4:关于空气污染的英语

全文共 1058 字

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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.

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篇5:环境污染原因英文

全文共 1569 字

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how to save environment? i think we should do the followings: first, it’s best to ride a bike to school, don’t take a bus or a taxi. second, i will remember to turn off the lights when i leave the classroom. third, in my free time, i will collect the empty bottles and waste paper for recycling. the fourth idea is turning off the shower when i ‘m not using it. fifth, it is imporment to save water and money. also, i won’t spend too much money on expensive things. last, we had better not cut down the trees, we have to take care of the trees . i’ll try my best to save the energy, i hope i can do something for our country.

the environmental protection is the most major problem which in the modern life the humanity faces. must solve this problem must start from foundation. first, must massively propagandize, enhances peoples consciousness with understanding, strengthens the environmental protection consciousness. next, must carry on waste recovery use, reduces to forest-trees felling. also must strengthen to white pollution processing, little uses the plastic product. finally, must make improvement to clean aspect. causes the citys appearance to be neater. for earths tomorrow, we must start from the now diligently, will want the well local constable to protect the environment. to this us proposes as follows suggests: implementation trash classification packed in bags. like this not only can reduce the environmental sanitation workers work load, but also can even better basically arrive makes use of waste, to reduce the pollution, saves the resources.

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篇6:2024高考作文论据素材:北京空气重度污染高达五级

全文共 676 字

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北京空气重度污染高达五级

雾霾是近几年来比较常见的空气环境污染现象,它的出现也让人们加大了对空气质量的检测和改善工作的展开。

根据预测,本轮的重污染天气过程从2号开始一直持续到4号夜间,其中,今明两天空气最差,预计将达五级重度污染。2号,北京市发布了空气重污染橙色预警以来,北京市各相关部门分别落实应急措施,并加大了对污染源排放执法检查和应急减排措施督查力度。

为确保应急措施落实到位,环保部门加大对固定污染源、移动污染源排放执法力度,截至目前,共出动执法人员1030余人次,检查施工工地、企业排放等点位1100多个;在一些水泥搅拌站记者看到,相关企业已停工停产,水泥搅拌车成排停放在厂区内并都贴上了封条,同时,按照应急预案的要求,4S店里的喷涂车间也停止了使用。

此外,通过路检、遥测、入户和进京口检测,共检查机动车3.77万辆次,处罚尾气超标车辆50辆,劝返外埠进京超标车88辆。

与此同时,北京市住建部门还开展了应急措施落实专项检查,截至目前,共检查工程942项,其中违规工地101项;城市管理部门已出动清扫保洁作业人员27123人次,作业车辆3689车次,检查人员1026人次,对重点道路加大清扫保洁强度,减少道路扬尘污染。

从目前的整体情况来看,针对本轮空气重污染橙色预警,北京市各区、各相关部门应对响应及时,整体情况良好,但仍存在个别露天焚烧等违规情况,已交相关部门处理。

语文迷网站提醒您:雾霾的组成十分复杂,大小有数百种颗粒物,这些颗粒物通过人体呼吸,进入呼吸道,会引发气管炎、哮喘等呼吸道疾病。特别要提醒有相关疾病的人群,要注意多加防范,减少外出。

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篇7:环境污染原因英文

全文共 918 字

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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.

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篇8:大气污染小学生空气的自述

全文共 822 字

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有人说我是看不见摸不着的,也有人说我是地球的面纱,其实啊,我的名字大家非常熟悉——叫空气。我住在地球的最外面,我把地球轻轻地抱在怀里,与你们形影不离。

在广漠的宇宙中,我们的家庭可算是历史悠久的大家庭。我们推选出氧气、氨、氮、碳这三位成员作为家族中的核心,千百年来,我们在宇宙中默默无闻地生活。

说起我的岁数,可是你们长者中的长者了,若要我说出来,恩——少说也有十亿年了。

我算不上高尚伟大,但对地球上的生灵,我可以自豪地说:“我是无愧的。”我给了鲜花娇艳的姿态,我给了呱呱坠地的婴儿顽强的生命力……总之地球的生灵都要靠我,它的生命都是我给予的。早晨,当太阳女神初升之时,阳光透过我射进千家万户,生灵们呼吸着我,人们向我点头微笑……就这样,过了好多年。

我是地球上赖以生存的物质,俗话说:“远亲不如近邻”,因而人类对我非常地友好。但近几年来,人们的生活水平提高了,工业生产越来越发达了,却忽视了我,他们认为我是无足轻重的,使纯洁的我受到了污染。大约在两百年前,一些工业的废气排放出来,它们混杂在我的中间,天然的“过滤器”森林也被人们大批大批的砍伐掉了,鸟儿们无处安家。什么粉尘、烟灰全都寄托在我的身上,我好象成了天然的垃圾箱。人们呼吸了我而发生疾病,这使我万分痛苦,但人们却把“凶手”的帽子戴在我头上,什么害人精了。地球上的生灵请你们听听我的哀诉。

蓝天上笼罩了尘烟,小河里的水不再清澈见底了,工厂里排放出的废气张牙舞爪地向我扑来。天长日久,你们呼吸着不干净的我,生出了各种疾病,它们时时威胁着你们的健康,虽然“环保”工作人员做了不少环保工作,但我需要更多的人来保护我……

有人说,当世界上最后一只老虎在孤独中寻求配偶,最后一只雄鹰从天空坠向大地,最后一只鸟儿发出悲惨的鸣叫时,人类也就失去了自己的未来。这真是警世之言!

我希望我的自述能在地球上得到正确的回答,希望你们能帮助我摘掉“凶手”的帽子,保护你们赖以生存的环境。同学们,行动起来吧,做个环保小卫士!

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篇9:关于环境污染的英文作文

全文共 2827 字

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1.There are still many problems of environmental protection in recent years. One of the most serious problems is the serious pollution of air, water and soil. the polluted air does great harm to people’s health. The polluted water causes diseases and death. What is more, vegetation had been greatly reduced with the rapid growth of modern cities.

To protect the environment, governments of many countries have done a lot. Legislative steps have been introduced to control air pollution, to protect the forest and sea resources and to stop any environmental pollution. Therefore, governments are playing the most important role in the environmental protection today.

In my opinion, to protect environment, the government must take even more concrete measures. First, it should let people fully realize the importance of environmental protection through education. Second, much more efforts should be made to put the population planning policy into practice, because more people means more people means more pollution. Finally, those who destroy the environment intentionally should be severely punished. We should let them know that destroying environment means destroying mankind themselves.

2.We can’t live without water, but now the water was polluted. It is the biggest problem. It influences our daily life. So we should find a way to solve this problem. Water is important resources. In our daily life, we often leave the tap on after cleaning hands. Sometimes we often drop litter in the river. So the water was polluted by us. I think we could use a bottle of water two or three times. We have to turn off the tap after cleaning hands.

Let’s try to form a good habit and save things around us. Let’s do it from now on!

Fish can’t live without water. Plants can’t live without water. People can’t live without water, either. As you can see, the water is very important to us. But now drinking water is leand less. The water was polluted seriously.

So we would act quickly in order to save the water, But what must we do nowI think we can plant trees, clean the banks of the river, water the plants by using used water. Turn off the shower while we are washing hair. And we shouldn’t drop litter into the river and so on.

It’s our duty to try our best to protect and save water. And don’t forget that if we don’t save water, the last drop of water will be our tear

Water is very important to us. We can’t live without water. But the drinking water is leand less. Because we waste a lot of water in our daily life. And some of us often throw rubbish into the rivers. So the rivers are polluted seriously.

It’s our duty to save water, we must do something to save water. For example, we shouldn’t pour waste water into the rivers and we should pick up litter around us.

If we don’t save water, the last drop of water will be our tear

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篇10:空气污染环境作文300字

全文共 535 字

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早晨起来,我再也没有看到那火红的太阳来照亮大地。只有走出家门,你才会发现大雾笼罩着整个城市,周围原本美丽的景色也变得模糊不清了。由雾霾引起的交通堵塞现象;由雾霾引起的哮喘等疾病……雾霾天气时刻困扰着我们,给我们带来许多不便。虽然我常常裹着大衣、背着书包从街上匆匆走过,但也会时不时打一个喷嚏,连感冒也久治不愈。

最近一段时间,我们成都的天气总是雾蒙蒙的。就在2013年11月21日,四川省成都市遭遇史上最严重的雾霾。现在,雾霾天气严重地影响成都的空气质量。雾霾天气的空气中,包含了一些尘土行的微小颗粒,这些微小的颗粒是人们用肉眼无法看到的,它们足以使人们得上肺病,对我们的身体造成伤害。现在的成都,雾霾天气几乎每天都有。美丽的“天府之国”也变成了一座“雾霾之都”了。

不要说雾霾是杀手,更不要说雾霾很可怕,其实,真正的凶手是我们人类,是我们不懂得保护环境,才引起的雾霾。要想挽回美丽的“天府之国”,我们可以把坐汽车变为骑自行车;可以少吃炒菜,多吃炖菜;可以戒烟或把吸完的烟头扔到垃圾桶里;可以少放烟花爆竹;还可以多种植花草树木,来净化环境。只有我们选择低碳生活,才能阻止雾霾天气的发生。

啊,让我们立刻行动起来,一起来阻止雾霾天气的发生,挽回我们美丽的“天府之国”——成都吧!

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篇11:大气污染小学生我发现空气被污染了

全文共 247 字

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今天早上起床,我洗漱了一下,吃了饭,到了中午我去楼下玩。

一下午我看到我的朋友们在放鞭炮,我也闻到了浓浓的火药味,那味可真是呛啊!我们玩的周围都是火药味。尽管有那么呛,但还是有许多人下去玩,继续放鞭炮。我因为感到太呛,所以就跑上楼写作业去了。连续好几天都是那样,只有朋友叫我的时候我才下去玩一会。他们问我:“你这几天怎么不下去玩呢?”我说:“难道你们这几天在楼下玩都感觉不到很呛吗?我是因为你们这样放鞭炮把空气污染了,我感到很呛,所以不想下去。”

我想我如果少放一些鞭炮,空气就是会少一些污染了吧!

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篇12:关于空气污染的英语

全文共 1130 字

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Although some citys air quality is improving, but it is estimated that the number of deaths due to air pollution each year up to 358000 people.[5] 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 governments environmental regulations are thought to have 20 years behind the United States, 20 to 30 yearsbehind that in Europe.And because of car usage increases, a true problem isworsening.

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.

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篇13:白色污染的英文作文

全文共 2872 字

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ite pollution persists

WEVE been hearing and talking about it for a fairly long time: curbing what has become known as “white" pollution. But still we are using the white polystyrene (PS) foam food containers and other disposable plastic products, which largely make up this form of littering.

Miandianwang, a well-known local fast-food chain, is still handing out takeout food in these PS foam containers, even though they should been phased out before December 31, 2000, under a Central Government decree. One of the waiters said in its outlet on Hongli Road on Monday that they are going to switch to environmentally friendly containers “some time in the future".

However, the Miandianwang outlet in Sams Club, which is affiliated with Wal-Mart, is offering take-out food in light brown containers which are biodegradable. Liang, a clerk with Sams Club, told Shenzhen Daily yesterday that the club required the Miandianwang outlet to do so in its contract.

According to Liang, all the departments in the club switched to biodegradable containers during the Spring Festival holiday.

Zhao Hua, with the energy division of the Shenzhen Municipal Economic Development Bureau, one of the five municipal government departments involved in the curbing of white pollution in the city, said on Monday that large companies and retailers like Wal-Mart and Vanguard have responded to the decree by switching to biodegradable containers. But she admitted that is just the tip of the iceberg in the seemingly endless war on white pollution in the city.

Zhaos bureau has met with four other relevant departments on several occasions. What they produced is not a feasible solution but an echo or rewording of the Central Government decree, according to Luo Wei from Shenzhen Municipal Legal Affairs Bureau, who is responsible for reviewing this “echo". The ”echo" has now been passed on to the municipal government which is expected to announce it formally in the near future. But Luo said shes not sure if this rewording can play a significant role in eliminating white pollution in the city. “We dont lack laws, regulations or decrees. The real concern is the effective enforcement of these laws or regulations," said Luo.

Zhao Hua admitted that cities like Shanghai and other coastal cities which are sensitive about their image as tourist destinations are doing a better job in this regard. “Shanghai is said to have produced a very detailed handbook on how to carry out the curbing work and Hainan has even banned disposable foam slippers in hotels," Zhao said.

Liu Guanqing, president of Shenzhen Xunbao Investment Development Co Ltd, a local manufacturer of biodegradable food containers was very eager to hear the municipal governments decision on the matter. “Since early this year, Ive seen orders fly in. Ill expand production once the government announces its stance on the issue."

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篇14:白色污染的英文作文

全文共 713 字

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Throw the white pollution plastic bag suround the environment was not very good.I never do that,I think environment need ours to protect.If everyone threw the plastic bag in the ground,our city will to be bad.Protect the environment its ours duty.

I never do that,I like environment.I also will protect the environment.

Thanks the government stop their use the plastic bag for anytime.Now they wanna use the plastic bag should pay money,so great.Perhaps also have some people dont know the white pollution was very hourable.Its so pity,I thought the government should give their some pressure,just like find one plastic bag paid 5 yuan or 10 yuan.Protect the environment was very important to for every ones health.

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篇15:大气污染小学生空气污染危害大

全文共 774 字

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空气污染不管是对我们还是对植物危害都很大,为什么这么说?这是我通过一次研究发现的,至于是什么研究,就听我慢慢跟大家说。

在庭园里种些花草,不仅能美化我们的家,还能净化我们四周的空气,让我们呼吸的空气更清新。因此有人说,一个具有一定规模的庭园就像一个不停工作的天然“氧吧”,能提供我们所需的清新空气。但近几天我发现我家的天然“氧吧”“罢工”了,每天清早我到院子里,再也呼吸不到以前那种清新的空气了。这是怎么回事呢?是什么令到我家的天然“氧吧”停止工作呢?我下定决心,一定要把那个“凶手”揪出来!

针对上述事件,我查阅了大量资料,综合我对花草、树叶的连日观察,发现嫌疑最大的是近日车辆的频繁来往,造成了严重的空气污染,加上附近的一些食店排放出来的油烟因近日风势不强,得不到有效的散解,被花草、树叶过量地吸收,造成叶片表面气孔被尘粒堵塞,以至它们不能“工作”。我咨询了自然老师,老师认为这种可能性很高,让我回家去试验一下。于是我回去采了一些花草样本,把它们栽在室内,定期让它们照射阳光,浇水次数加密,几天后,和其他的比较一下,发现经我“悉心照顾”的那些花草比外面的生长得好多了。根据我的实验结果,我把每天浇水的次数加密到每天3次,经过我一个多星期“苦心经营”,“天然氧吧”终于又恢复了正常的工作,每天为我们提供着清新的空气。

综合以上所述,我得出了结论:“天然氧吧”的停止工作,是因为周围空气污染的日趋严重,使花草过量地吸收了空气中的一氧化碳、碳氢化合物、氮氧化物以及空气中的悬浮粒子,以至花草、树叶中用于进行光合作用的气孔被堵塞,机能超荷,停止工作。我终于把这个“凶手”揪了出来!

你看,这就是空气污染的危害。空气污染其实伤害的不仅仅是我们自己,也伤害了地球上的许许多多的生物,还有我们的地球母亲……让我们一起行动起来,减少空气污染,一起保护我们的生存环境吧!

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篇16:英文环境污染作文

全文共 970 字

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It is reported that ten big cities in China are being  among the top twenty cities with the highest pollution index in the world. This means it is high time we did something to bring the situation under control.

Many factors are  to the deteriorating situation: industrial wastes pumped into the air, the lakes and rivers; a increasing number of automobiles crowding into the streets; the  use of plastic bags etc.

To my view, stiffer laws and regulations must be implemented to check pollution. Industries that release wastes without  should be heavily fined. Cars should be equipped to minimize the exhaust they release into the air. And the use of plastic bags and disposable meal boxes should be banned. What’s more, the media should play an important role in implanting a sense

of consciousness into people’s mind.

If everybody works toward a common goal of making the environment better, we can create a cleaner and lovelier world for us and for the coming generation.

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篇17:有关空气污染的英语

全文共 1131 字

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Health, surrounded by, smog, anything but, gases, impurities, absorb, poisonous, try hard, blacked out.

We all know that clean air is important to good health. Wherever you go and whatever you do, you are always surrounded by a sea of gases that we call air.

If there are impurities in the air, they may be absorbed by our bodies and make us ill.

We need clean air, but unfortunately, air pollution is globally present, especially in cities.

Many large cities are anything but pollution-free. Our cities have many factories, which we need to make food, clothing and other things.

Every year these factories pour millions upon millions of tons of smog into air.

Power plants and houses that burn coal add greatly to air pollution. Besides, there are more cars in cities now.

Once out on the streets, they will take in fresh air and replace it with poisonous gases.

Our country is trying hard to prevent and control air pollution. As long as every citizen also realizes its importance and makes join efforts, the day will come soon when people will take in only clean air.

Then, the sunlight will no longer be blackened out by smoke and soot.

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篇18:大气污染小学生空气污染

全文共 1394 字

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空气污染是空气中某些物质的含量超过正常含量时,形成危害动、植物,影响其生存的现象。大气中C0、NH3、SO2、H2S、Cl2、03和N02等物质的正常含量均在百万分之一以下,对动、植物没有明显的不良影响。但19世纪以来,由于工业和交通运输的发展,那些物质大量排入大气,使空气污染日趋严重,影响到动、植物生命活动乃至人体健康。

污染物的来源,有的来自自然界(如火山喷出的烟灰),有的来自人类活动,其中工业、交通运输产生的废气是主要的污染源。空气污染可分为气体污染物和气溶胶状污染物两大类。气体污染物包括SO2,、03,、氮的氧化物以及碳氢化合物等;气溶胶污染物包括固体粒子(粉尘、烟尘气)和液体粒子(烟雾、雾气)两类。直接向空气中排放的污染物质,叫一次污染物。空气与污染物之间相互作用,产生反应,或空气中光化学反应引起的污染物变质所产生的新污染物,叫二次染物。

空气污染物种类很多,其中对农业威胁较大的约有十多种,如SO2、 HF、C12和光化学烟雾等。 气象条件对空气污染物的影响,水平风速和对流层高度是影响大气稀释空气污染物能力的两个气象要素。当农田上空主导风向来自污染源时,农田容易受有害气体的危害;风力强弱则影响空气污染物的扩散速度、污染物在空气中的浓度与平均风速成反比;通常午后湍流强,空气处于不稳定状态时,有利于扩散。夜间晴朗无风,近地面逆温层可使污染物在地面上停滞积聚,加剧空气污染的程度。另外,在准静止的高气压系统中,由于下沉逆温阻止下层排放的污染物扩散到大气上层,可形成近几百米厚的污染层。各国多次发生的严重空气污染事件大都是在低逆温层、风速小和无雨的气象条件出现几天之后形成的。

空气中一些污染物例,如SO2和悬浮于空气中的农药颗粒等,经雨水淋溶落到地面,又可污染土壤和植株。污染物对植物的危害,一般是通过气孔进入植物组织,干扰酶的作用,阻碍代谢机能,有的有毒物质在体内还可进一步分解或参与合成过程,产生新的有害物质,侵害细胞组织,抑制光合作用,使生长受阻、产量降低、品质变劣。其危害分为急性、慢性和不可见危害等。高浓度污染物造成急性伤害,引起产量显著下降,低浓度污染物,在长时间作用下,造成慢性危害,一般症状不明显。不可见危害只造成生理上的障碍,一般没有症状。

植物受空气污染危害的程度,主要受下列因素影响:污染物浓度和植物接触它的时间;植物本身的构造和所处的发育期以及环境条件的影响。如充足的光照,适宜的温度、良好的供水和空气湿润,较高的C02浓度等,都能导致叶片气孔开放,易受污染危害。 植物对大气的净化功能。不少植物具有一种以酶作催化剂的潜在解毒力,能够分解一些有毒物质,或形成一些大分子络合物,暂时可以降低毒性。1公顷森林,每年可吸滞灰尘30多吨,1公顷柳杉林,每年可吸收700多公斤S02,柑桔树的叶子可吸收储存硫达1%,青杨和桑树具有较强的吸收铅尘的能力,加拿大杨、银杏、榆树、梧桐、桉树等都是较好的“天然吸尘器”。草坪的吸附粉尘能力比裸露地面大几十倍。因此环境科学的任务之一,是要充分发挥植物净化大气的作用。选择吸收污染能力强的植物,扩大造林绿化面积,根据污染源位置、污染物汇集区的地形地势、风向和污染气体的季节分配,统一考虑构成一种包围式或隔离式的林带,使含尘气流在移动中途被树林吸收。另方面要研究采取控制或减少排放污染物的措施,以保证大气质量符合规定的标准。

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篇19:谣言六:“煤改气”加剧北京空气污染?

全文共 551 字

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一篇《天然气锅炉排烟是加剧京城灰霾天气的重要原因》的文章表示,天然气锅炉排烟是造成北京地区“丰富水汽”的主要来源,是加剧灰霾空气的“帮凶”,称北京发展天然气是双刃剑,既有清洁能源的一面,又有排放水汽的负面影响和氮氧化物的污染

真相:中科院大气物理所研究员王自发表示,按照我国当前的天然气消耗量计算,每年燃烧天然气产生的气态水在3亿吨左右,假如全部转化成液态水(但实际上不可能全部转化为液态水),平摊在全国人口集中的东部地区(估算面积约360万平方公里),液态水的厚度连0.1毫米/年都不到,仅占大气中可降水量的几十万分之一,影响微乎其微。所以说,“煤改气”不会显著增加北京市大气中的湿度,不是北京地区“丰富水汽”主要来源。

南开大学冯银厂教授表示,无论是燃煤、燃气还是燃油,都会排放氮氧化物。“煤改气”是否会导致氮氧化物的升高,主要取决于改气之前煤炭的燃烧方式和煤炭品质、改气之后采取的燃烧技术等因素。如果采用了低氮燃烧技术,氮氧化物的排放量就会降低。我国脱硝比脱硫起步晚,近年来大气环境中的氮氧化物浓度下降并不像二氧化硫那么显著。氮氧化物浓度的增加可能会造成二次污染,但这是可控的。而且污染成因和机理非常复杂,不能因为氮氧化物浓度没有明显下降,颗粒物污染依然严重,就说是“煤改气”造成的,这是不科学的。

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篇20:空气污染

全文共 712 字

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今天早上,我一觉醒来,发现天空是湛蓝的,是那种温柔的澜,纯洁的蓝。蓝的让人陶醉,让人心旷神怡。

今天的天这样蓝,是因为经过了暴风雨的清洁,否则它还会是灰蒙蒙的。为什么会这样呢?爸爸妈妈小时侯,天还是蓝蓝的。这一切的幕后凶手就是——环境污染

工厂在工作时产生的废气都是没有经过处理就直接排向蓝天,企业燃用汽油产生的废气也弥散在空中。同时随着经济的发展和人口增多,能源消耗量增加,产生的废气也是原来的许多倍。汽车、摩托车等机动车数量迅速增加,尾气排放量加大。这些废气中含有大量二氧化碳和烟尘。由此造成严重的环境污染。而环境污染又会造成大气层污染,大气层污染导致天空变灰。

空气污染的害处不单单只是天空变灰,有时还会有生命危险。

1984年12月3日凌晨,震惊世界的印度博帕尔公害事件发生。午夜,坐落在博帕尔市郊的一所杀虫剂厂——一座储存四十五吨化学有害物质的杀虫剂厂的保安闸出现毒气泄漏事故。

不一会儿就有毒烟雾袭向这个城市。形成了一个方圆25英里的毒雾笼罩区。先是近邻的两个小镇上,有数百人在睡梦中死亡;接着是火车站里的一些乞丐死亡。毒雾大幅度的扩散时,居民们惊慌失措,有的以为是“原子弹爆炸”,有的以为是“地震发生”,有的以为是“世界末日的来临”。一周后,有2500人死于这场污染事故,另有1000多人危在旦夕,3000多人病入膏肓。有15万人因受污染危害而进入医院就诊,事故发生4天后,受害的病人还以每分钟一人的速度增加。这次事故还使20多万人双目失明。

可见,空气污染的危害有多么大!为了缓解空气污染,请大家从身边的小事做起,不要在野外烧火,尽量不要用尾气排放量太高的汽车……相信有了大家的支持,空气污染造成的危害一定会消失!!!

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