环境污染话题英语作文【合集20篇】

I love my school so much, because of the beautiful environment. The first day I walk into the school, I am very impressed by the green trees and the colorful flowers. It seems that I just walk into a park and getlost in the green world. The trees and flowers make me feel so comfortable, and my heart feel the peace.

我非常喜欢我的学校，因为环境很优美。我走进学校的第一天，校园里绿色的树和五颜六色的花就给我留下了非常深刻的印象。就好像我走进了一个公园，迷失在绿色的世界里。树和花让我感到很舒服，心情也很平和。

现在的小区生活使许多人不爱护环境，比如家离垃圾桶不远，而生活垃圾就喜欢往下扔，不愿意拎下来放进垃圾桶里，乱扔垃圾使空气散发出阵阵臭味，还有汽车排出的尾气又黑又脏，人类吸了容易生病，还有工厂里排放出的工业用水会污染我们的饮用水，人们喝了这水就会生病。。。。。。

我长大要发明一种药水，一滴就可以自动分解我们的生活垃圾，使它不再发臭而是会散发出阵阵香味。二滴放在汽车尾部使汽车排放出来的气一下变成无色无味的空气。三滴可以把工产排放出来的污水变得清澈见底，鱼儿在河里欢快的游来游去。

这些只是我的想象，具体的做法应该首先，在我们的小区周围竖立牌子上面写着“请不要乱扔垃圾，爱护环境”这样会使人们注意，就不会乱扔垃圾。然后在公路的两旁多种一些树木使汽车排出的尾气被树树木吸收，最好要用太阳能汽车又环保又省油。最后，每个工厂要做一个排污吸收管和污水净化池，就会使工产附近的树木生机勃勃，空气清新舒畅。

大家应该从我做起，从身边的小事做起爱护自己可爱的家园。毕竟，我们只有一个地球。

Industrial pollution is clearly one of the biggest contributors to our polluted landscapes, at least here in the west. There are plenty of causes of land pollution, from urban and industrial ones, to rural and agricultural sources.

But which kinds of land pollution are the most important? And what can we realistically do to help prevent more pollution?

This part of the site gives an overview of some of the most important causes of land pollution, including industrial pollution.

There are also some recommendations for helping avoid domestic land pollution incidents.

Click here for some good reading on industrial pollution and land pollution causes and solutions.

Many years ago, before I moved to the city, I lived in a small town. I was so close to the nature, I could see the mountain and the clear water. I remember the town became especially beautiful after the heavy rain, the air was so fresh and I felt a little cozy, it was like a gift from god in the hot summer. The mountain looked so clear over the heavy rain, it just washed by the rain. The things around me were so green. I love living in the town, I especially like the town when it was washed by the rain. At that moment, nature and me were united, we just like a group.

There is a library in our school. It is open from eight oclock in the morning till half past five in the afternoon. We often go there to borrow books.

We can borrow five books at a time and keep them for two weeks. If we cant finish reading them in two weeks, we can go and renew them. The librarian is always ready to help the students. If the book you want is out, she will help you to choose another one. We always take good care of the borrowed books. We can also look through newspapers and magazines in the reading-room, but we are not allowed to take them out of the reading-room.

减压

假设你们班要在下星期一举行题为"The Ways for Students to Relax"的班会，请结合报道的内容。用英语写一篇80字左右的发言材料。

内容包括：

1. 简要介绍造成现在学生学习压力大的原因。

2. 你认为来自于English Online调查结果的放松方式是否有效，为什么？

3.谈谈你个人自我放松的有效做法（至少三点）。

Dear fellows,

Not only adults but also we students often feel stressed because we have too much homework to do, and we are very busy studying every day, we don’t have our own time to do what we are interested in. We are very tired and sleepy all day, so we should learn to deal with it. What should we do to relax?

From the result of the survey, I think doing sports with classmates is a good way to relax. Because it’s good for our health and it can make us relaxed.

I also have three ways to relax ourselues. First, we can listen to music. Second, we can go to the movies with our parents on weekends. Don’t study at home all the weekend. Third, when we feel tired, we can think about something interesting.

I hope my suggestions can help you.Thanks!

[高考英语话题作文减压

香烟是危害人体健康的一位温柔的“杀手”，据媒体报道，吸烟的人容易得多种疾病，如肺炎、支气管炎、心血管疾病等等，吸一包香烟相当于减少1小时的生命。

我看过爸爸20多岁时的照片，那时的她白白胖胖，脸色红润。可不知什么时候起，爸爸每天都要吸一包烟。慢慢的，他的牙齿变黑了，手指变黄了，身上散发出一股难闻的烟味。我见了他，躲都来不及。我和妈妈几次劝爸爸戒烟，可他却说：“现在生活安定了，也该学着享受，再说，吸烟的男人有风度嘛！”虽说我们心里不高兴，但妈妈心软，最后还是由着她。

过了不久，我发现爸爸开始咳嗽，那声音越来越响了。先是轻轻的几声，然后是连续不断的咳嗽。有时咳得脸发红，连眼泪都流出来了。每天晚上，还没看见他回家，就可以听见他那刺耳的咳嗽声了，那声音听起来像七八十岁的老人一样苍老。爸爸实在熬不过，就只好求助医生。经过医生诊断，发现爸爸得了气管炎，这下，爸爸不得不下决心戒烟了。有时见爸爸实在忍不住了，我就把零食往他的嘴里塞，这个办法还真管用。

现在，爸爸长胖了，胃口开了，精神也饱满起来了。爸爸也主动把原来用来吸烟的钱补贴家用，有时也给我买学习用品、玩具，给妈妈购买衣服、营养品。现在，我的家里又充满了欢声笑语。

Cigarettes are endangering human health a gentle "killer", according to media reports, smokers prone to many diseases, such as pneumonia, bronchitis, cardiovascular disease, etc., 1 hour less smoke a pack of cigarettes is equivalent to life.

I saw the pictures of my father in his 20s when she was fat and red. I dont know when my father would smoke a pack of cigarettes every day. Slowly, his teeth blackened, his fingers turned yellow, and he smelled a bad smell. I saw him, and it was too late to hide. My mother and I advised my father to give up smoking a few times, but he said, "now that life is settled, we should learn to enjoy it. Besides, the man who smokes has grace!" Though we were not happy in our hearts, our mother was soft and finally let her alone.

After a while, I noticed that my father began to cough, which was getting louder and louder. First a few words, then a continuous cough. Sometimes his face turned red and his tears ran out. Every night, before he could see him go home, he could hear his shrill cough, which sounded as old as an old man in his 70s and 80s. Dad couldnt survive but he had to go to the doctor. After the doctors diagnosis, he was found to be suffering from bronchitis, and the father had to make up his mind to quit smoking. Sometimes I cant help seeing my father, but Im putting a snack in his mouth, and it works.

Now my father is fat, his appetite is open and his spirit is full. My father also offered to subsidize the money used for smoking. Sometimes he also bought me school supplies, toys, clothes and nutrition for my mother. Now my home is full of laughter.

污染环境的人们：

地球妈妈是什么？地球妈妈是一部洒满热血与热泪的历史长卷，地球妈妈是生命的摇篮，是哺育着无数代子孙的母亲，地球妈妈是一道美丽的风景，地球妈妈是一支绵延无尽的歌……原来的她，美丽而纯洁，被小辈们装饰得漂漂亮亮。而现在呢？现在的地球妈妈被那些不顾后果地污染环境的人们弄得危在旦夕。地球是我们人类赖以生存的家园，它无私地为我们提供着生存资源和条件。我们应该要爱护地球，珍惜地球，而那些污染环境的人呢？有的在各个地方摆摊而等到晚上就收摊走人。但是他们却没有看到在他们周围到处都是他们丢弃的垃圾，等到再过几天，那些垃圾在地上发臭，苍蝇、蚊子都飞来飞去，让过路的行人都得捂着鼻子，快步走过去。有的在一个干净的小花园里扔垃圾，渐渐的有许多人往那里扔垃圾，那里就成了一个垃圾堆了。原来，那里绿树荫荫，花儿和小草茂盛地开着。蜜蜂和蝴蝶都在那里安了家，那里到处散发着迷人的气息，犹如一副美丽的画卷。可是现在，那里寸草不生，臭气熏天，连人都不愿意在那里多待一会儿……为了保护我们美丽家园的环境，向你们提出以下几点建议：

1、提倡人们不乱扔垃圾，应把垃圾扔到指定分类的垃圾箱里。并加强宣传分类垃圾箱的可回收范围内的物品和不可回收范围内的物品。

2、教育广大市民要节约资源，并大力宣传一些节约资源的小窍门。

3、强化监督管理，要让人们做到尊重自然，爱护树木，爱护动物，爱护大自然的一切。如果发现身边有破坏环境的人，应及时教育和积极提醒。

4、提倡人们多点使用耐用品，绿色消费。尽量不要使用一次性用品。

5、宣传“从我做起，保护环境”。可以的话开一些保护环境的活动，让人们体会到，环境对于我们人类来说，真的很重要。

谁不希望抬头所望的天空是湛蓝如玉，谁不希望脚下宽阔的大地是绿草如茵，谁不希望身边的湖水是清澈如镜，谁不希望扑鼻而来的空气是清新如洗，谁不希望照耀大地的阳光是灿烂如金？“污染环境千夫指，保护环境万人颂。”只要我们保护环境，珍惜资源，我们的地球还是一个充满缤纷色彩的世界，还是我们人类美丽的家园！

xxxx

xx年xx月xx日

[对于污染环境的建议书

I am a student. And I know every student need to go to school for almost 20 years, if a student go to university or college after high school, he or she will stay in school for 5 more years. So precious is time that we cannot afford to waste it. But there is a question. Whats the point of doing all this? Whats the purpose of study?

In my point of view, nothing is more importance than to receive education. The magic of education can make person intelligence, smart, and reasonable. Physics and chemistry can help you to understand the world. Math can help you to be smart and train your brain. Art, IT, and planning can help you to learn some important skill in tomorrows world. Language can help you to community with others.

So the reason why we are learn in school for such a long time is because you will understand that no subject you are taking is a waste of your time.

Math, physics, chemistry, biology, and earth science are researched by all human in the past. On the other word, it is human culture we are learning. But the most important thing is these results were discovered by the people in the past. Right now, we just have to understand it. How simple is that?

In all, learning things from school is not only for you can survive in the society in the future, but also a study of a human race.

Recently, the news reported that one special kind of rhino from Africa just

passed away, which meant the disappearance of this lovely creature. What a great

pity. The tragedy is caused by the damaged environment, while human being must

be blamed for it, because we have done so many bad things to pollute the

environment and make the nature lose its balance. In order to make up our faults

and save our offspring, it is in need of protecting the environment. As the

ordinary people, we can do the small things, such as do not throw away the

rubbish and join some activities to bring the world green, like planting trees.

Every small act can make a difference. Some day, when we live with the

environment friendly, what we do is worth.

In recent years, we can clearly feel the environment around us is more and moreobvious pollution, environmental safety problems have been very serious. Because of our previous policy is heavy economic development, light environmental protection,resulting in environmental pollution, ecological damage is very serious, mainly manifested in the following aspects:

近几年来，我们可以明显的感觉到我们身边的环境污染愈显明显，环境安全问题已十分严重。因为我国以往的政策方针是重经济发展，轻环境保护，所以造成环境污染、生态破坏十分严重，主要表现为以下几个方面：

In the atmosphere of security, since the middle of the twentieth Century, industry andthe rapid development of transportation, causing air pollution is increasing. Air pollutionis harmful to human health, but also affect the growth of plants and animals,destruction of building materials, serious when can alter the earths climate. According to the survey, China each year from air pollution and economic losses amounted to about 100000000000 yuan.

在大气安全方面，20世纪中叶以来，工业和交通运输迅速发展，造成了大气污染的日益加重。大气污染既危害人体健康，又影响动植物的生长，破坏建筑材料，严重时会改变地球的气候。据调查显示，我国每年因大气污染造成的经济损失高达1000多亿元。

In the water security, water pollution in China is very serious, widespread around thedrinking water safety problems, a direct threat to human and animal survival. In recent years, although the investment fund management a lot of Huaihe and other waters, but the effect is not obvious, the overall situation is still deteriorating.

在水安全方面，我国水污染问题十分严重，各地普遍存在着饮用水安全问题，直接威胁到人畜生存。近几年虽然投入大量的资金治理淮河等水域，但效果并不明显，整体情况仍在恶化。

In a biological safety, the invasion of alien species mass, a serious threat to thebiological diversity of china. In fact, the blind introduction of foreign species, damage the environment balance, serious and even lead to disastrous consequences. At the same time, because of the destruction of the ecological environment and wildlifehunting, biological extinction rate is rapidly increasing.

在生物安全方面，大规模的外来物种入侵，严重威胁了我国的生物多样性。事实证明，盲目引进外来物种，会破坏环境平衡，严重时甚至带来灾难性的后果。同时，由于生态环境的破坏和对野生动植物的滥捕滥猎，生物消亡的速度正在迅速增加。

In the security of land, the land desertification and soil erosion is very serious. In addition, the cultivated land quality in China decreased very rapidly, at the same time,because of the serious land pollution phenomenon caused by excessive use ofpesticides, is directly related to food safety problem of residents in our country. China is a developing country, in the face of environmental pollution pressure not only fromChina itself, and applied pressure from some developed countries abroad. Therefore the development of economy and environment is a need for us to issue long face, and it also need to rely on the participation of each and every one of us.

在土地安全方面，我国土地荒漠化和水土流失的情况已十分严重。另外，我国耕地质量下降非常迅速，同时由于过度使用农药等造成的严重的耕地污染现象，直接关系到我国居民的食品安全问题。 我国是一个发展中大国，面对环境污染方面的压力不仅来自国内本身，还有来自国外一些发达国家施加的压力。因此发展经济和治理环境是一个需要我们长久面对的问题，而这也需要靠我们每个人的共同参与。

Transportation during the Spring Festival, called chunyun in Chinese, is an annual test on Chinas transportation systems.

The Spring Festival, also known as the Chinese Lunar New Year, which falls in late January or early February according to Gregorian calendar, is the most important festival for the Chinese as it is an occasion for reunions with family and friends.

Particularly, people hope to return home from work or study to have a reunion dinner with families on the Lunar New Years Eve.

Hundreds of millions of Chinese people are on journey as the Spring Festival travel season begins. Therefore, Chunyun has created enormous pressure on Chinas transportation sector.

The Ministry of Railway and the National Development and Reform Commission usually issue circulars during the period, demanding that coordination mechanisms be established among transportation departments, different localities and police, and that countermeasures be made in place in case of emergencies to ensure efficiency and a complete success during the peak travel season.

Protection of EnvironmentThere 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.

导语：如今，微信已经成为我们生活的一部分。下面是yuwenmi小编为大家整理的优秀英语作文，欢迎阅读与借鉴，谢谢!

Nowadays WeChat has been a part of our life. It is becoming more and more popular with young people because of the following advantages. First we can communicate with our friends by sending words and expressions very quickly. Second we can share pictures music and videos with them. Third we can not only send voice messages to them but also speak to them directly. Besides we can use it in any time. Last but not least we use it for free and can save money. In my view although WeChat has improved our lives it should be used properly. We shouldn’t lose ourselves in it.

【参考译文】

如今，微信已经成为我们生活的一部分。由于年轻人的优点，它变得越来越受年轻人的欢迎.。首先，我们可以很快地和我们的朋友交流词语和表达方式。其次，我们可以分享图片，音乐和视频与他们。第三，我们不仅可以向他们发送语音信息，而且可以直接与他们交谈。此外，我们可以在任何时间使用它。最后但并非最不重要，我们使用它免费，可以节省资金。在我看来，虽然WeChat已经改善了我们的生活，它要运用得当。我们不应该在它中迷失自我。

environmental degradation环境恶化

resources exhaustion资源枯竭

greenhouse effects温室效应 global warming全球变暖

uncontrolled urbanization城市化失控

endangered species濒危物种

wildlife extinction野生动物灭绝 natural habitat自然栖息地

water conservation节约用水 toxic emission废气排放

conservation of water and soil水土保持

disruption of ecological balance生态失衡

landscaping design for environmental purposes美化环境

bring the pollution under control控制污染

pursue the strategy of sustainable development推行可持续发展战略

近年来，大气污染非常严重，雾霾几乎每天都笼罩着天空，不仅给我们的交通安全带来隐患，而且威胁着人们的身心健康。如何改变这种恶劣的环境，净化城市空气已成为当下人们关注的热门话题。日前，《唐山市重度污染天气预警应急响应预案(暂行)》和《唐山市2013--2017年大气污染防止攻坚战行动实施方案》相聚出台，这项举措足以证实各级政府对环境治理的决心和信念。对此。人们不禁拍手称道。

众所周知，造成大气污染的来源诸多，主要来源有三类：其一是生产性污染，这是大气污染的，例如，燃料的燃烧，主要是煤和石油燃烧过程中排放的大量有害物质，如烧煤可排出烟尘和二氧化硫;烧石油可排出二氧化硫和一氧化碳等;另外，生产过程排出的烟尘和废气，以火力发电厂、钢铁厂、石油化工厂、水泥厂等对大气污染最为严重，还有就是农业生产过程中喷洒农药而产生的粉尘和雾滴。 其二是生活性污染，由生活炉灶和采暖锅炉耗用煤炭产生的烟尘、二氧化硫等有害气体。 其三是交通运输性污染，汽车、火车、轮船和飞机等排出的尾气，其中汽车排出有害尾气距呼吸带最近，而能被人直接吸入，其污染物主要是氮氧化物、碳氢化合物、一氧化碳和铅尘等。环境污染是个老生常谈的问题了，之所以越来越严重，一是污染企业的管理者利益驱使金钱作祟，二是政府部门的打击治理的力度不够。这次治理大气污染各级政府重拳出击，人们称赞之余更是拭目以待。治理生产性污染，政府及相关部门要严格治理，对于超标排放的企业坚决取缔，切不可像“治理大型货车超载交了罚款就放行”，而一罚了之，而且要长效监督，杜绝反弹。

诚然，取缔生产性污染企业，作为普通百姓，你我都是“心有余而力不足”。但是，治理大气污染我们也不能完全依赖政府，一些来自生活性的污染，你我都有责任和义务承担。其实，早几年我们就一直在倡导低碳生活，绿色出行，可遗憾的现实生活中有多少人真正付诸行动?。君不见，都晓得机动车排放尾气污染大气，宁可每天抱怨道路堵停车难，也不愿少开一天车;都知道烧烤食品即污染空气又伤害身体.可那一家露天烧烤不是顾客满盈;明知道生产装饰材料会造成大气污染，损害健康，却有多少人在“豪华”的装修;如此这般，是否在做自己害自己“傻事”。如果你我少开一天车，少用一度电或少用一吨水，这些细小的行为看起来微不足道，但是，倘若每个人都能自觉的杜绝铺张浪费，养成勤俭节约的生活习惯，相关企业就会减少产量，就会间接的较少污染。唯有政府的治理和你我的参与，我们的生存环境一定有所改善，天空才会越来越蓝。

在我的家乡，人们大都没有保护环境的意识和习惯，导致生活环境十分糟糕。

先说房前屋后吧。很多人不懂得植树种花，到处是一片片空地。这样一来，夏天的中午，就算站在屋檐下，也像在蒸笼里，直感到热浪袭人;南洋风吹来，到处是尘沙飞扬，行人的眼睛都难以睁开。要是房前屋后都有郁郁葱葱的大树和花圃，浓荫如盖，花香四溢，太阳也不会这么毒辣，沙尘也不会这么张狂，景色明朗如画，空气清新甜润。

再说公路和河道吧。很多人乱扔乱丢、乱排乱放，走在路上，随处可见方便碗，连树枝上也挂着方便袋;河坡上污水横流;河面上漂浮着死鸡死猫死狗，河水都被染黑了，散发着一阵阵恶臭。要是公路上每个几十米有个垃圾桶，人们也都讲究公共卫生，那么，公路上一尘不染，河坡上明净整洁，河水清澈见底，水草悠悠，鱼儿游玩，人们会感到爽心悦目。

接下来说树林和沟渠吧。很多人不懂得保护野生动物，有的在树林里布设鸟网，捕杀鸟类;有的背着电瓶，电击青蛙，导致庄稼虫害严重，影响粮食产量。很多人不懂得回收农药瓶，打完农药后，药瓶随意丢弃在沟渠，瓶里的残留农药污染沟渠，人吃了带毒的鱼虾，就会生病。

要是注意保护有益动物，我们就会有一个鸟语花香的世界，“稻花香里说丰年，听取蛙声一片”，那该有多好啊!所以说，要想提高我们的生活质量，过上美好的幸福生活，我们要推行植树种花，形成卫生习惯，保护野生动物，维护生态环境。

In the past few decades, our Earth has changed a lot, but to the bad

direction. Among these changes, the air pollutions resulting from a huge number

of automobiles and coal-burning is almost the severest. The severe air pollution

alarms humans of the heavy load we have exerted on Earth by our insatiable

production and usage of automobiles. However, with the deepening of

urbanization, more cars are needed, which will make the air pollution worse.

Therefore, the following actions should be taken. First, we should apply the

most cutting-edge technologies in order to adopt new forms of energy as

substitutes for fossil fuels. Second, try hard to develop possible

transportation means, which are enviromental friendly. So that the citizens can

reduce the dependence on cars. In short, our humans should take responsibilities

for the air pollution and have to find ways to solve this problem.

industrial pollution is the industrial production process of the formation of gas, waste water and solid emissions on the environment pollution. industrial pollution is mainly concentrated in a few industries. paper, chemical, steel, electricity, food, mining, textile and other seven sectors accounted for the total wastewater discharge 4 / 5. paper and food industry accounts for cod emissions of cod emissions 2 / 3, non-ferrous metallurgical industry, heavy metal emissions of heavy metals emissions account for nearly 1 / 2. industrial pollution is the industrial enterprises in the production process, including human biological survival and reproduction of the natural environment against. pollution is mainly from the production of the "three wastes" (waste water, waste gas, waste) and all kinds of noise caused can be divided into water pollution, air pollution, waste pollution, noise pollution.

industrial pollution hazard. first, a large number of industrial production in the discharge of untreated water, gas, slag and other hazardous waste, it will seriously damage the ecological balance of agriculture and natural resources on the development of agricultural production caused great harm; second, industrial "three wastes" of the industry production itself is also very serious hazards, toxic pollutants can corrode pipes, damaged equipment, affecting plant life, etc.; third, environmental pollution, rampant pollution, directly endangering the health of the masses; also some contamination is not easy to find, after the damage that has very serious

在十年前的中国，大气污染问题对于普通民众来说可能是个比较飘渺的话题。正如空气本身的性质一样，看不见摸不着却无处不在。而专家学者们则主要关注的是对于工业生产，燃煤发电所产生的硫氧化物的处理和汽车尾气中氮氧化物的处理。十年时间飞逝，随着中国经济的迅速发展，人们生活水平的不断提高，人们开始关注生活的质量问题。与其同时越发严重的正是中国以牺牲环境为代价发展经济所带来的环境问题，其中大气污染问题尤其明显。这几年来关于温室气体和温室效应的话题被讨论得沸沸扬扬，专家们各有其立场，但对于普通百姓来说，全球变暖问题似乎仍很遥远。对于温室气体所带来的全球变暖，海平面上升，冰川融化，动植物灭亡的问题，人们大多数是在电视新闻或报刊杂志上看到，恶劣天气的频发也并不是发生在世界每个角落。相比于温室气体所带的大气污染问题，人们开始关注更多的便是最近发生在北京，广州，武汉等多地的灰霾问题。尤其是在北京持续很久的灰霾严重影响了当地人们的日常生活和身体健康，更是引起了广大专家学者和普通民众的高度关注。而其实对于灰霾现象，国外专家学者很多年前便开始研究。

那么何为灰霾？灰霾是导致近地面大气浑浊的多种空气污染物的混合体。构成灰霾的主要污染物是硝酸盐、硫酸盐、有机碳、元素碳、等固体细颗粒物（PM2.5）和臭氧()、二氧化氮（）、二氧化硫（）、挥发性有机物（）等气态污染物。灰霾往往与天然污染源的排放和二次污染污染物的形成有关，还与一定的气象条件和地形有关。我们现在最关注的同时也最难解决的室外污染物之一是可吸入颗粒物。可吸入颗粒物被分类为两种，直径小于2.5微米的颗粒物（PM2.5）和直径小于10微米的颗粒物（PM10）。虽然两种形式的颗粒物都对人类健康有极大的危害，PM2.5被普遍认为是更危险的，因为它的体积小，大约只有人类头发宽度的1/30。人们在呼吸时，PM2.5可以进入人类肺组织深处，甚至进入血液，造成严重的健康问题。同时更小的颗粒物在大气中可以有较长的停留时间。因此，PM2.5可以传播的更远，停留在空气的时间越长，影响更大的人口。PM2.5和PM10的主要来源包括机动车，电厂和其他工业源，以及生物质的燃烧。其中一个主要的来源是柴油为动力的车辆。这些污染源相结合，可以在城市或农村地区天空一片阴霾，而且往往发生在下午时段。

对于容易形成灰霾的城市,除了城市当地工业污染,汽车尾气的影响以外,特定的地形导致污染物的难以扩散也是灰霾形成的主要原因，像美国的洛杉矶,还有前面提到的受灰霾影响的北京和武汉都受到了地形的影响。洛杉矶市三面被群山包围，当地空气干燥，白天阳光充足。到了晚上，地表面冷却很快。地面附近的空气变冷，而上层空气都比较热，形成逆温。北京市位于华北平原的西北边缘，背靠太行山余脉和燕山山脉，面对辽阔的华北平原，东南距渤海约150公里, 地处暖温带半湿润地区，气候属于暖温带半湿润大陆性季风气候,四季分明，春季多风和沙尘，夏季炎热多雨，秋季晴朗干燥，冬季寒冷且大风猛烈。武汉市则居于内陆、距海洋远，周围地形如盆地，集热容易散热难，河湖多、晚上水汽多，城市热岛效应和伏旱时副高控制明显。通过比较以上3个城市的情况可以发现它们都是较大的工业城市，而且城市海拔较低，周围至少有一面是高地，都分布在低于南北纬50度的地方。这些地区夏季阳光明媚，天气温暖干燥。在城市的盆地地区，逆温现象十分普遍。夏季的阳光使地面温度升高，城市街道和建筑物迅速升温，与炎热的物体表面接触的空气温度升高。通过对流空气向上运动，但它却不能穿透逆温层，因为上面的空气温度更暖且密度更小。空气聚集，但连续的对流形成了垂直的循环，使空气完全混合在一起。从建筑物和汽车废气释放出的气体和颗粒也都聚集在逆温层下，通过对流把聚集的空气彻底混合。这样导致污染物无法快速扩散而聚集，大大增加了当地的污染物浓度。

城市内部灰霾的形成也同样受到了这种类似地形的影响，学者称它为街谷模型。随着城市化的加速，城市及城市周边的自然生态系统逐渐被人工生态系统取代，取而代之的是钢筋混凝土浇筑的高楼与马路,很容易形成城市街道峡谷。这种城市街道峡谷是指两侧有连续，高大建筑物的狭长城市街道空间。在这种地形下,上层大气在进入城市时，风速迅速降低并产生特殊的湍流，使街谷内的流场完全不同于上层大气。而气流对污染物具有显著的运输、稀释、和扩散作用，因此，对城市街谷内污染物的浓度、分布有着很大影响。北京的灰霾现象正是因为污染物积聚难以扩散而导致北京的灰霾持续了如此之久。有相关专家的研究发现,除了通过控制排放源,增大扩散和增加沉积率来降低大气中污染颗粒物的浓度以外,地面的性质也影响着颗粒物的浓度。有研究表明植被对城市空气质量能有接近5%的提高。在城市，尤其是在城市街谷地带种植植被能通过增加沉积作用而降低60%的可吸入颗粒物（PM）浓度和40%的二氧化氮（NO2）浓度。因此，通过对植被的合理利用能过创造一个有效的城市污染过滤膜，对密集城市地带空气质量的提高有着快速有效并且持续性的影响。

灰霾问题不是一个暂时性的问题，相反它是一个长久的问题，从它如何形成，加剧到我们如何解决治理并消除都需要一段很长的时间。

灰霾现象，它只是地球环境污染的一个缩影。我们更应该探究它的根源问题，什么才是它形成的根源，什么才是它加剧的根源。我们没法通过改变天然的气候和地形来解决城市灰霾问题，但我们可以通过减少排放源，通过增加植被，加强城市绿化来阻止灰霾的加剧。人类的不断进步使得人们在追求高科技的同时却忘记了自然本身的无穷力量。越来越高的大楼，越来越发达便利的交通，相反的却是城市越来越差的生活环境。在灰色的钢筋水泥世界里生活久了，人们是否会怀念那晴朗的蓝天，向往呼吸新鲜的空气和在那充满生机的绿色大自然世界里生活。

Today, our teacher told us a story on the newspaper. She told us that there was a famous university student whose family is very poor and faraway, but he studied very hard and then went to the big city for study. One day, his mother brought some homemade food to him. But he thought his mother will let him lose face, so he pretended he didnt know his mother. I felt ashamed for him and felt ridiculous about the face problem. Its meaningless. People should lay down their face, live the way they are, dont live in others eyes. Just be yourself, you will be happier.

今天，我们老师给我们讲了一个报纸上的故事。她告诉我们，有一个名牌大学的学生的家庭很穷，也很偏远，但他学习很努力，之后他就去了大城市学习。有一天，他的母亲给他带来一些自己家做的食物。他却认为他的母亲会让他丢脸，所以他假装不认识他的母亲。我为他感到很羞愧，也觉得这面子问题真的很可笑。毫无意义!人们应该放下面子，活出自我，不要活在别人的眼里。做你自己，你会更快乐的。