最新消息:学生作文网,您身边的作文指导专家!

全球变暖的英文 全球变暖英文ppt

初中作文 zuowen 2浏览 0评论

【 – 初中作文】

篇一:《全球变暖英语作文》

全球变暖英语作文

作文一

People around the world may feel that the climate has been getting steadily warmer and warmer in recent years. Places which used to be abundant in snowfall have frequently experienced snowfree winters. Drought lasts longer in some dry areas. People find that without air conditioners they could hardly work or fall asleep on hotter summer days.

The side effects of global warming are alarminS. A warmer global climate melts the ice caps, raising sea levels. What is more, it disturbs weather patterns, causing droughts, severe storms, hurricanes. People suffer a lot from disasters relevant to global warming.

To stop global warming we should make immediate and continual efforts. We hope the situation will soon change. Global warming catches and holds our concern, for it affects us and will affect our later generations. We cannot wait any longer. Do it. Do it right. Do it right now.

作文二

全球变暖

Directions: For this part, you are allowed 30 minutes to write a short essay on the topic Environmental Protection. You should write at least 120 words following the outline given below.

1. 全球变暖对地球环境造成了很大影响

2. 引起全球变暖的原因

3. 我们需要采取的措施

Environmental Protection

No one,regardless of race, religion or nationality, can deny that the world we live in is becoming increasingly intolerable because of the effects of global warming. According to many experts, even greater impacts are still on the way.

There are numerous causes for this problem. On one hand, human-related emissions of carbon into the atmosphere is causing, and will in the future cause, significant global warming according to the theory. On the other hand, the lack of knowledge about the importance of protecting environment hinders the solving of the problem.

It is urgent that immediate and effective actions should be taken right away. First, more trees need to be planted to help improve and beautify the environment. Besides, stricter laws concerning global warming and irresponsible use of fuel resources have to be put into effect and achieved good results. In a word, there is a long way to go before we can take a comfortable world for granted again .

作文三

全球气候变暖是目前人类面临的最大环境问题。请你根据以下提示,写一篇英语短文,为“节能减排”献计献策。

背景

随着经济的发展,更多的温室气体被排放,其中大约70%为二氧化碳,这也是全球变暖的主要原因之一

后果

海平面上升;自然灾害频繁。

措施

1.多使用清洁能源,少用煤、油;

2.在可能的情况下以步代车;

3…….

4…….

要求:

1. 短文必须包括表格中的所有内容要点,可适当发挥,措施中3、4点由考生自由发挥;

2. 词数:100左右。

With the development of economy, more and more greenhouse gases are being discharged into the air. CO2 makes up about 70% of the greenhouse gases, which is considered to be one of the greatest causes of global warming. It has harmful effects, causing the sea level to rise and many natural disasters to strike. So we must take effective measures to save our planet. First, we should use more clean energy and less coal and oil. Second, we should go to work on foot or by bus instead of driving a car if possible. Third, we should plant more trees, because plants can turn CO2 into oxygen. More importantly, we should form the habit of saving energy in our daily life.

作文四

Ladies and gentlemen,

Good morning, I am Li Hua from Tianjin, China . It’s my great honor to be here to talk about the global warming problem and ways of dealing with it.

Lately , global warming is becoming a serious problem. Several factors contribute to it. First of all, a lot of greenhouse gas is produced by cars and factories; furthermore, the loss of forests is another cause of global warming.

Global warming will cause some harmful effects. Firstly, some islands will disappear because of the rise of sea level. Secondly, extreme weather results from global warming. When temperature rises, the production of crops will decrease. Besides, some animals and plants will disappear, thus destroying the ecosystem.

So we should protect the earth from greenhouse gases. We should plant trees and reduce the amount of carbon dioxide and other greenhouse gases. Hope our earth can become better and better.

That’s all. Thank you.

{全球变暖的英文}.

作文五

To Control the Global Warming

During the late 20 century, global warming became more and more bothering to human beings.

Nowadays, it is commonly acknowledged that to maintain permanent peace and development, environmental problems must be solved with highest priority. In my opinion, to control global warming, government should carry out sensible policies and common people also should take their resibonsibilities.

I can remember big snow came every year when I was a child, and the weather was so cold that I couldn‘t go outdoors without my scarf and hat. But these years, big snows are hard to see, and even in December, you needn’t wear too much because it’s not cold at all. The climate is changing. In the past decades, global warming arouse many countries attention and they do took some measures to ease this problem. However, though the Kyoto Protocol was signed, some countries are not willing to hold their pace of economic development. To drive the global warming under control, we still have a long way to go.

Governments are the main force in the combat against global warming. On the issues concerning global warming, the variety of attitudes toward global warming is a greatest obstacle for us to win this combat. So, at first, all the countries must reach an agreement on striking a balance between developing economy and solving this environmental problem. Then, some effective policies should be adopted to reduce the emission of the greenhouse gases.

Common people's involvements are the key to ease the global warming. One persons ablity is slight, but if every one can make a little effort, the achivement will be incredible. What can we do for it? I think first, we can learn something about global warming, to be aware of it and to know our resiponsiblities to this planet. In addition, we can should not to make greenhouse gases, specificlly, to take bus or ride bicycle instead of driving private car.

If we human beings can make joint effort to take care of this planet. I think global warming will certainly be solved in the near future.

作文六

THE CRISIS OF GLOBAL WARMING

Background: 全球变暖

Cause: 温室气体排放,其中大约70%为二氧化碳.

consequence : 海平面上升 自然灾害频繁

measures: 1节约家用电器 2少用机动车辆 3.植树造林

词数120个

Global warming has become one of the biggest environmental concerns for people all over the world.

With the development of economy, the emission of the greenhouse gas, consisting of about 70% carbon dioxide, has been steadily increased, contributing greatly to the global warming. The increase in the temperature of the earth has caused many harmful effects. It melts the ice caps, raising sea levels. It disturbs weather patterns, causing frequent natural disasters such as floods, droughts, severe storms, hurricanes (飓风), and so on.

Actually, it’s easy for everyone to do something to save energy and reduce the emission of

greenhouse gas. For example, turn off an electrical appliance if it is not used. Walking, cycling, carpooling or using public transportation instead of using motor vehicles are all good ways to reduce the emission of carbon dioxide.

We are also supposed to plant trees and preserve forests. Every individual counts and individuals together makes a big difference.

作文七

倡议书

1. 据报道,在过去的十年间,北极圈内的平均气温比以前升高了2—3摄氏度。

2. 2009年12月的哥本哈根世界气候峰会要求各国减少温室气体排放,拯救地球。

3. 2010年新年刚开始,极度寒冷的天气袭击了亚洲、欧洲和北美洲。恶劣的天气正是全球变暖的后果。

(就素材号召同学们行动起来积极应对地球变暖)

Dear fellow students,

It is reported that the average temperature within the Arctic Circle has risen by 2—3 degrees Celsius in the past ten years. At the Copenhagen Climate Summit 2009 all nations were required to reduce the greenhouse gas emission to save the earth. At the beginning of 2010, extremely cold weather hit Asia, Europe, and North America, which is the evidence of global warming.

As is known to all, our environment has been worsening due to human activities. If we don’t take effective measures now, human beings will not be able to survive in the future. If we can save energy, recycle waste and plant more trees, we can make the earth a better place. So let’s take action from now on! let’s save the earth.

作文八

Ladies and Gentlemen,

Good morning. I’m Li Hua from Fujian, China. It’s my great honor to be here to say something about the global water shortage and ways of dealing with it.

As we know, the global water shortage is becoming increasingly sever mainly due to global warming, environmental pollution and the ever-increasing population. Therefore, it’s high time we did something about it.

Firstly, an effective way, I think, is to reserve water in a scientific way for future use. Secondly, new methods need to be developed to use the existing waster resources, for example, turning sea water into fresh water. Thirdly, we must stoop water pollution by law. Last but not least, it’s everyone’s responsibility to make good use of water, such as recycling and saving water in our daily life.

In conclusion, people around the world should be aware of the real situation of water shortage, protect the present water resources and explore potential ones scientifically.

作文九

global warming and our life

Global warming has quickly become one of the most heated issues. With the development of the economy, the emission of the green house gas, consisting of about 70% carbon dioxide, has been increased, attributing greatly to the global warming.

Global warming is the slow and steady increase in the temperature of earth and its atmosphere. The increase in the temperature of earth has caused many effects like the melting of ice in Polar Regions, increase in disease occurrences, drastic climatic changes and rise of the sea level.

As the effects of global warming is becoming more and more evident, many of us have started to realize that steps have to be taken to control Global warming, such as the usage of clean energy resources and the alternative of motor.

作文十

One possible version:

Dear editor,

The curtain went down on the Copenhagen climate summit, leaving the world concerned more about global warming once again.

As is well known, it is human activity that has contributed to this problem. The burning of fossil fuels like coal, natural gas and oil produces greenhouse gases. When huge quantities of extra carbon dioxide are put into the atmosphere, more heat energy tends to be trapped in it causing the global temperature to go up.

However, the attitudes of scientists towards this rise are completely different. On the one hand, it’s predicted that there may be a rise of several metres in the sea level, extreme climate change or the disappearance of species. On the other hand, it’s supposed that the rise will make plants grow quicker and produce more, thus encouraging a greater range of animals.{全球变暖的英文}.

It seems that the topic is controversial and there is a long way to go.

篇二:《Global warming全球变暖全英文介绍》{全球变暖的英文}.

One of the effects of global warming is the destruction of many important ecosystems.Changing and erratic climate conditions will put our ecosystems to the test, the increase in carbon dioxide will increase the problem.

The evidence is clear that global warming and climate change affects physical and biological systems. There will be effects to land, water, and life. Already today, scientists are seeing the effects of global warming on coral reefs, many have been bleached and have died. This is due to warmer ocean waters, and to the fact that some species of plants and animals are simply migrating to better suited geographical regions where water temperatures are more suitable.

Melting ice sheets are also making some

animals migrate to better regions. This effects the ecosystems in which these plants and animals live.

Several climate models have been made and they predict more floods (big floods), drought, wildfires, ocean acidification, and the eventual collapse of many ecosystems throughout the world both on land and at sea.

There have been forecasts of things like famine, war, and social unrest, in our days ahead. These are the types of effects global warming could have on our planet.

Another important effect that global warming will bring is the loss and endangerment of many species. Did you know that 30 percent of all plant and animal species alive in the world today are at risk of extinction by the year 2050 if average temperatures rise more than 2 to 11.5 degrees Fahrenheit.

These mass extinctions will be due to a loss of habitat through desertification, deforestation, and ocean warming. Many plants and animals will also be affected by the inability to adapt to our climate warming.

Some species will survive though because they will migrate to other parts of the world where they can survive. A good example of that happening is the red fox that has already done it. The red fox used to live mainly in North America, but has migrated now to the Arctic.

People like you and me are also in danger, people living in coastal areas will be badly hit if sea levels rise. Desertification will also be a problem for humans, food may become scarce.

One very disappointing effect of global warming is war and conflicts.

With a decline in the amounts of quality food, water, and land, it could bring an increase in global security threats, and war.

Take the country Sudan for example, in that region global warming has played an important role. There is conflict in Sudan, global warming is not the only cause, but it has played its part. The roots of the problem in Sudan can be traced back to climate change, and the scarcity of natural resources.

The conflict in Sudan started during a time of intense drought.

Scientists and military analysts are predicting that climate change and the devastation it causes could bring war and conflict. When sufficient amounts of water and food are running short that is when war can come about. What this brings to light is the fact that ecological crisis and violence are both linked.

Economic calamities are another effect that global warming could bring.

Take hurricane Katrina for example, one thing that climate change does is that it brings us more extreme storms like Katrina. Hurricane Katrina resulted in millions and millions of dollars in damage. When severe storms and floods occur, crops, homes, businesses, and more all fail, and that costs a lot of money, and it hurts the economy. When severe floods occur you also need to make sure that the threat of disease is controlled.

Hurrican Katrina resulted in 135$ billion in property damage. That really hurt the economy that year.

When severe weather does damage it can also raise the price of insurance, and this hurts the everyday person.

Cleaning up a disaster area also costs a lot of money. If too many extreme storms hit in a certain time frame the impact on the economy can be disastrous.

Drought is an effect of global warming that we are already seeing right now.

Many countries are finding that

they are currently receiving more storms and rising waters, while other countries are suffering from drought. As the climate of the Earth warms, experts from Scientific American predict that drought conditions could increase by as much as 66 percent. Drought will mean a shrinking water supply and a decrease in crops.

Drought can mean a danger for global food production and supply. This also mean that several countries experiencing drought could have a major famine on their hands.

Currently, India, Pakistan, and some parts of Africa are already experiencing droughts. It is sad to say but experts are predicting that it will get much worse.

One important effect global warming is having on our planet, is that it is producing more intense storms and floods. When you look at the scientific data concerning storms and floods in the last 30 years, you will see that category 4 and 5 hurricanes have nearly doubled in occurence.

What many people don't know or realize is that warm waters give hurricanes their strenght and power. Many scientists today are associating the increase in ocean and atmospheric temperatures to the rate of violent storms.

Between the years 1905 and 2005 the frequency of hurricanes has been on the rise. From 1905 to 1930 there were an average of 3.5 hurricanes per year, 5.1 between 1931 and 1994, and 8.4 between

1995 and 2005. In 2005 there was a record number of tropical storms that came about, and in 2007 the worst flooding in 60 years hit Britain. More recently, Australia has seen the worst flooding they have had in a long time.

Heat waves are also an effect of global warming.

It is no secret that temperatures are breaking records in the US and Canada and abroad. More extremely hot summer days are in store for North America and elsewhere if global warming continues unabated. Here are some heat waves facts for you: air pollution in urban areas could get worse with the increased heat. This could result in more people having heart attacts, strokes, and asthma attacks. Children, the elderly, poor, and people of color are more vulnerable to the effects of a heat wave.

Scientists have confirmed that the frequency and duration of heat waves has definitely increased by a lot over the last 50 years.

One obvious effect of global warming is the shrinking of glaciers, this is happening wherever there are glaciers worldwide.

Mountain glaciers have been in retreat for a long time now as global warming continues to effect us. What many people don't realize though is that it is happening more rapidly now then previously believed.

Glaciers don't only recede they also shrink vertically. The lakes this melting produces can also lead to more melting. These lakes are like a cancer that is consuming our world's glaciers.

Here is a fact that may surprise you: Even if all the world's mountain glaciers were to melt, the effect on sea levels would be small. However, the disappearance of mountain glaciers would have other impacts on nature aside from raising sea levels.

Global warming will also bring a rising of sea levels around the world.

As glaciers and polar ice sheets melt, the sea levels will rise more and more, and the sea temperatures will also warm. This means more hurricanes, and more flooding due to the rise of the sea level.

篇三:《关于全球气候变暖的英语词汇》

关于全球气候变暖的英语词汇 absorption n. 吸收

accelerated adj.加速的

advancement n. 前进,进步

afflict vt. 使痛苦,折磨

agriculture n. 农业

air pollutant 空气污染物

alter v. 改变

Antarctic adj. 南极的,南极地带的

Antarctica n.南极洲

atmosphere n. 大气,空气

atmospheric adj. 大气的

atmospheric concentrations of

carbon dioxide 大气中的二氧化碳浓

atmospheric temperatures 大气温度

attributable adj. 可归于…的

benign adj. (病)良性的,(气候)良

好的

biosphere n. 生物圈

blizzard n. 大风雪

breakthrough n. 突破

buildup n. 组合,形成

burning of fossil fuels 燃烧燃料{全球变暖的英文}.

byproduct 副产品

carbon dioxide emissions 二氧化碳

的排放

carbon monoxide n.[化]一氧化碳

catastrophic adj.悲惨的,灾难的

chemical composition of the

atmosphere 大气层的化学成分

cholera n.[医]霍乱

circulation n. 循环

climate zones 气候区

climatic adj.气候上的

colorless adj. 无色的

combustion n.燃烧

complexity n.复杂的事情,复杂性

{全球变暖的英文}.

composition n. 成分,合成物

compound n. 混合物,[化]化合物

concentration n. 集中,浓度

conserve vt. 保存 crack n. 裂缝 cropland n. 农田 cyclone n. 飓风,龙卷风,[气]气旋 deadly adj. 致命的 decompositon n. 分解,腐烂 deforestation n. 采伐森林,森林开伐 deluge n. 洪水,豪雨;v.使泛滥 descendant n. 子孙后代 desert n. 沙漠;adj.沙漠的,不毛的,荒凉的 desertification n. 沙漠化 deteriorate v. (使)恶化 detrimental adj.有害的 devastate vt. 毁坏 devastating adj.破坏性的 dike n. 堤防 disaster n.灾难,灾祸 displace vt.移置,取代,转移 disrupt v.使陷入混乱,破坏 drought n. 干旱 ecological damage 生态破坏 ecosystem n.生态系统 emit vt.发出,散发 energy consumption 能源消耗 environmental awareness 环境(保护)意识 epidemic adj. 流行的,传染的;n. 时疫 erode vt. 侵蚀,腐蚀;vi.受腐蚀,逐渐消蚀掉 evaporation n. 蒸发(作用) extreme adj.极端的;n.极端的事物 Fahrenheit adj.华氏温度计的;n. 华氏温度计 fatal respiratory illness 致命的呼吸道疾病 fertile adj. 肥沃的,富饶的 filter n. 滤波器;vt.过滤,渗透 fluctuation n. 波动,起伏 forest destruction 森林破坏

forest n. 森林

frequency n. 频率,发生次数

gas emission 气体排放

geological data 地质资料

geology n. 地质学,地质概况

glacier n. 冰河

global warming 全球变暖

grassland n. 牧草地,草原

greed n. 贪欲,贪婪

greenery n. 温室,草木

正Global warming is one of the most

serious environmental issues that we face

today.Scientific assessments indicate that

if the human-created greenhouse gas

emissions are left unchecked,the excessive warming is very likely to distort climate patterns and cause significant impacts on both natural and human systems.As the two largest emitters of greenhouse gases in today's world, both United States and China face great challenges of global warming and climate change.Using quantitative data from multiple sources including surveys,newspapers,and government documents,this study examines major dimensions,concerns and policy developments surrounding the issue of global warming and climate change in the United States and China. Implications of the study are discussed in the conclusion.

月30日消息,随着全球气候变暖的危机越来越明显,而各国环保投资缺口明显的问题,联合国最近提出应对气候变化融资的提议。

据联合国新闻中心报道,秘书长发言人蒙塔斯6月29日在纽约总部的记者会上表示,潘基文秘书长欢迎英国政府在近日发表的《哥本哈根路线图》中提出的有关为应对气候变化融资的提议,希望其他国家就此展开讨论、做出承诺。

潘基文表示,英国提出的倡议正值关键时期,也显示了发达国家在气候变化框架谈判中需要展示出的领导力,如果发达国家不能在融资问题上认真做出承诺,恐怕在哥本哈根气候变化大会上很难达成协议。

潘基文指出,英国倡议的核心部分是适应气候变化,考虑到最贫困、最弱势的发展中国家正在承受气候变化最直接、最严重的影响,这一点具有尤其重要的意义。他还欢迎英国提出的帮助发展中国家适应气候变化的资金不应挤占官方发展援助的太多份额、而应作为额外资金提供的倡议。

英国政府6月26日发表了题为《哥本哈根路线图》的宣言,阐明了其在今年年底的哥本哈根气候变化大会上的基本立场。英国首相布朗还就全球应对气候变化的融资问题提出了建议。

布朗在《哥本哈根路线图》发布当天发表的演说中提出,英国认为在哥本哈根必须推动实现两个目标。第一,要力促各国就温室气体减排方案达成协议,以阻止全球平均气温上升。第二,推动发达国家和发展中国家就气候问题达成公平的交易。

布朗称,要控制气候变化的影响,全球到2050年的温室气体排放量必须比1990年的水平至少减少一半,为此发达国家至少需要将减排水平降低80%,但发展中国家也需要做出努力。同时,发达国家应该为发展中国家提供资金和技术支持。

布朗提议,应通过进一步发展碳交易市场调动私营资本,同时为调动公共资金支持发展中国家应对、特别是适应气候变化建立新的国际伙伴关系。

布朗提出,这方面的公共资金应由发达国家和发展中国家按照能力共同提供,应尽量作为官方发展援助之外的额外资金,资金应具有可预测性以便发展中国家提前做出计划,而且这方面的资金应由发达国家与发展中国家共同管理。气候变得更暖和,冰川消融,海平面将升高,引起海岸滩涂湿地、红树林和珊瑚礁等生态群丧失,海岸侵蚀 全球变暖的可怕后果

,海水入侵沿海地下淡水层,沿海土地盐渍化等,从而造成海岸、河口、海湾自然生态环境失衡,给海岸带生态环境带来了极大的灾难。 2、水域面积增大。水分蒸发也更多了,雨季延长,水灾正变得越来越频繁。遭受洪水泛滥的机会增大、遭受风暴影响的程度和严重性加大,水库大坝寿命缩短。 3、气温升高可能会使南极半岛和北冰洋的冰雪融化。北极熊和海象会渐渐灭绝。 4、许多小岛将会无影无踪; 5、因为还有热力惯性的作用,现有的温室气体还将继续影响我们的生活。 6、温度升高,会影响人的生育,精子的活性随温度升高而降低…….

7、.原有生态系统的改变。 8、对生产领域的,例如:农业,林业,牧业,渔业等部门…… 9、将感染疾病等传染病……病菌通过极端天气和气候事件(厄尔尼诺现象,干旱,洪涝,热浪等……) ,扩大疫情的流行,对人体健康危害…… 对气候的影响

将更多的二氧化碳和温室气体排放到大气中所造成的危害,谁也无法确切地说明将来会有多严重?科学家正在估算气候变化所带来的危害。按目前的技术水平计算,2004年才能阐明大气中二氧化碳形成和消解的机理,这样就能发现温室效应是如何产生的。2006年才能准确的预知因地球升温而造成的海平面上升。然而真正理解这一切要到2050年。显然,科学家和政治家都不会等到进一步的结果出来才采取防治措施,现在的观察和研究成果应该都让公众了解,才不至于使人们不得不在50年后自咽苦果。 温室效应自地球形成以来,它就一直在起作用。如果没有温室效应,地球表面就会寒冷无比,温度就会降到零下20℃,海洋就会结冰,生命就不会形成。因此,我们面临的不是有没有温室效应的问题,而是人类通过燃烧化石燃料把大量温室气体排入大气层,致使温室效应与地球气候发生急剧变化的问题。 温室效应会产生什么样的影响呢?由于矿物燃料的燃烧和大量森林的砍伐,致使地球大气中的二氧化碳浓度增加,由于二氧化碳等气体的温室效应,在过去100年里,全球地面平均温度大约已升高了0.3—0.6℃,到2030年估计将再升高1—3℃。 当全世界的平均温度升高1℃,巨大的变化就会产生:海平面会上升,山区冰川会后退,积雪区会缩小。由于全球气温升高,就会导致不均衡的降水,一些地区降水增加,而另一些地区降水减少。如西非的萨赫勒地区从1965年以后干旱化严重;我国华北地区从1965 年起,降水连年减少,与50年代相比,现在华北地区的降水已减少了1/3,水资源减少了1/2;我国每年因干旱受灾的面积约4亿亩,正常年份全国灌区每年缺水300亿立方米,城市缺水60亿立方米。 当全世界的平均温度升高3℃,人类也已经无力挽回了,全球将会粮食吃紧。 由于气温升高,在过去100年中全球海平面每年以1——2毫米的速度在上升,预计到2050年海平面将继续上升30—50厘米,这将淹没沿海大量低洼土地;此外,由于气候变化导致旱涝、低温等气候灾害加剧,造成了全世界每年约数百亿以上美元的经济损失。{全球变暖的英文}.

冰川融化

近年来,人们对从巴塔哥尼亚到瑞士的阿尔卑斯山地区的冰川因为“温室”气体的排放和普遍认为的 南极冰川融化速度加快

温室效应而融化的情况进行了观察。在南亚地区,问题并不是冰川是否在融化,而是融化的速度有多快?虽然全球变暖的许多不良影响可能要到21世纪末才会

变得非常严重,但是尼泊尔、印度、巴基斯坦、中国和不丹等地的冰川融水可能很快就会给人们造成麻烦。 国际冰雪委员会(ICSI)的一份研究报告指出:“喜玛拉雅地区冰川后退的速度比世界其它任何都要快。如果目前的融化速度继续下去,这些冰川在2035年之前消失的可能性非常之大”。国际冰雪委员会负责人塞义德·哈斯内恩说:“即使冰川融水在60至100年的时间里干涸,这一生态灾难的影响范围之广也将是令人震惊的。” 位于恒河流域的喜玛拉雅山东部地区冰川融化的情况最为严重,那些分布在“世界屋脊”上的从不丹到克什米尔地区的冰川退缩的速度最快。以长达3英里的巴尔纳克冰川为例,这座冰川是4000万——5000万年前印度次大陆与亚洲大陆发生碰撞而形成的许多冰川之一,自1990年以来,它已经后退了半英里。在经过了1997年严寒的亚北极区冬季之后,科学家们曾经预计这条冰川会有所扩展,但是它在1998年夏天反而进一步后退了。

疾病肆虐

哈佛大学新病和复发病研究所的保罗.受泼斯坦注意到,植物也随雪线而移动,全世界山峰上的植物都在上移。随着山峦顶峰的变暖,海拔较高处的环境也越来越有利于蚊子和它们所携带的疟原虫子这样的微生物生存。 西尼罗病毒、疟疾、黄热病等热带传染病自1987年以来在美国的佛罗里达、密西西比、德克萨斯、亚利桑那、加利福尼亚和科罗拉多等地相继爆发,一再证实了专家们关于气候变暖,一些热带疾病将向较冷的地区传播的科学推断。{全球变暖的英文}.

新冰河期

关于全球变暖的另一项研究结果更令人吃惊,由北极冰原融化,降雨量增加,以及风的类型的不断改变,大量淡水正汇入北大西洋,对墨西哥湾暖流造成破坏,从而切断北大西洋暖流。正是这些暖流把温暖的表层水从加勒比海带到欧州西北部,并使欧洲形成温暖的气候。而北大西洋暖流一旦因全球变暖被切断后,欧洲西北部温度可能会下降5-8℃之多,欧洲可能面临一次新的冰河时代! 这项研究是位于阿伯丁的苏格兰海洋实验所分析了设在兰群岛海域到法罗群岛海域之间自1893年以来的1.7万多次海水盐度测量结果得出的。在过去的每20年中,流向南部的深层海水盐度变得越来越小,浓度越来越低,这表明有更多的淡水从大西洋北部汇入了该地区。这些新数据第一次充分证明了德国科学家在大约3年前设计的计算机模型。 大气中的二氧化碳的含量急剧升高,而世界人口将在2050年之前达到100亿。“我们的世界正在朝着由人造设施来代替现有免费自然资源的方向发展”,明尼苏达大学的戴维·蒂尔曼说。但是,我们还没有掌握自然生态系统的有关知识。在2.45亿年前的二叠纪大灭绝中,96%的物种灭亡了。后来随着许多新物种的出现,地球上终于恢复了丰富的种群,但是这个过程足足经历了一亿年。威尔逊说:“一些人认为,自然界会复兴人类所毁灭的一切” 。谚语云:“只要有足够的时间,万物皆可应运而生。”或许自然界真的能够恢复一切,但这个漫长的过程对于现代人类无论如何是没有意义的。 马克·吐温曾经说过,天气最动人的特质就在于它的变化多端。1个多世纪过去了,我们仍然在为准确预报天气情况而努力,在控制气候方面却收效甚微;然而,对环境的破坏却是史无前例的。

生态

首先,全球气候变暖导致海平面上升,降水重新分布,改变了当前的世界气候格局;其次,全球气候变暖影响和破坏了生物链、食物链,带来更为严重的自然恶果。例如,有一种候鸟,每年从澳大利亚飞到我国东北过夏天,但由于全球气候变暖使

转载请注明:中小学优秀作文大全_作文模板_写作指导_范文大全 » 全球变暖的英文 全球变暖英文ppt

您必须 登录 才能发表评论!