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.
引起全球变暖的原因及对策 全球气候变暖是一种“自然现象”。由于人们焚烧化石矿物以生成能量或砍伐森林并将其焚烧时产生的二氧化碳等多种温室气体，由于这些温室气体对来自太阳辐射的可见光具有高度的透过性，而对地球反射出来的长波辐射具有高度的吸收性，也就是常说的“温室效应”，导致全球气候变暖。近100多年来，全球平均气温经历了冷－暖－冷－暖两次波动，总的看为上升趋势。进入八十年代后，全球气温明显上升。全球变暖的后果，会使全球降水量重新分配，冰川和冻土消融，海平面上升等，既危害自然生态系统的平衡，更威胁人类的食物供应和居住环境。 一、引起全球变暖的因素 （一）人为因素 1.人口剧增因素。近年来人口的剧增是导致全球变暖的主要因素之一。同时，这也严重地威胁着自然生态环境间的平衡。这样多的人口，每年仅自身排放的二氧化碳就将是一惊人的数字，其结果就将直接导制大气中二氧化碳的含量不断地增加，这样形成的二氧化碳“温室效应”将直接影响着地球表面气候变化。 2.大气环境污染因素。目前，环境污染的日趋严重已构成一全球性重大问题，同时也是导致全球变暖的主要因素之一。现在，关于全球气候变化的研究已经明确指出了自上个世纪末起地球表面的温度就已经开始上升。 3.海洋生态环境恶化因素。目前，海平面的变化是呈不断地上升趋势，根据有关专家的预测到下个世纪中叶，海平面可能升高50cm。如不采取及对措施，将直接导致淡水资源的破坏和污染等不良后果。另外，陆地活动场所产生的大量有毒性化学废料和固体废物等不断地排入海洋；发生在海水中的重大泄(漏)油事件等以及由人类活动而引发的沿海地区生态环境的破坏等都是导致海水生态环境遭破坏的主要因素。 4.土地遭侵蚀、盐碱化、沙化等破坏因素。造成土壤侵蚀和沙漠化的主要原
英语演讲稿,全球化 篇一：全球化英文演讲稿 This is opposites becomes globalization,we know that some place’s economics get great,however some poorest than they ever we promote globalization or not Is globalization the arch-criminal to the poverty gap What is globalization That is ,diffuse market economy from one country to all of the world,make capitalism cover every corner of the globe. And we all know, if one country carry out the Capitalism and market economy in the same time ,it can get great efficiency ,increase the productivity. But everybody knows market economy have its own shortcomings ,first,it can lead to poverty gap easily. The rich richer, the poor poorer. This is the nature of the market economy. But, because of this, we should stop globalization If there is no globalization, how the Multi-National Corporation make Listing and financing, put their product to every place in the world to every people’s there is no globalization,many problem couldn’t be solved by peace ways. Like country in Africa get
全球变暖英语作文范文 在这一则报导中，我学到很多事，但我第一个想到的是，造成地球变暖的原因是二氧化碳增加。 In this paper, I have learned a lot of things, but I think the first one is the cause of global warming, the increase of carbon dioxide. 为什么二氧化碳会增加呢?我想到的原因是人们常常开车、养食家畜、工厂大量排放黑烟……等。不过这些是大家可以一起解决，说不定可以改善地球继续暖化，例如：目的地很近的话可以骑自行车;目的地很远的话，可以搭乘公共交通运输工具;家畜的排泄物经过处理再排入河内;工厂可以建一座废弃处理厂……等。 Why carbon dioxide will increase? I think the reason is often drive, raising livestock, food factory emissions of smoke...... Etc.. But these are all can solve them together, it can improve the Earth continues to warm, for example: the destination is close enough to ride a bike; destination long enough, can take the public transport; waste livestock treated and then discharged into the Hanoi factory; to build a waste treatment plant...... Etc.. 请大家不要小看二氧化碳的威力，等到海平面上升、都市浸水和农地淹没，到最后就会面临粮食不足的危机了。请大家跟我一起喊：“停止伤害地球的行为吧!我们居住的地球只有一个。” Please do not underestimate the power of carbon dioxide, when the sea level rise, urban water and farmland submerged, eventually facing food shortage. Please call with me: "stop the harm to the earth's behavior! Only one earth on which we live. "
英语作文范文全球变暖 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(无雪的) winters. Drought lasts longer in some dry areas. People find that without air conditioners they could hardly work or fall asleep on hotter summer daysg. 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 (飓风). 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.
全球气候变暖的原因和应对措施 全球气候变暖已经成为世界上的重大问题之一。那么是什么造成的，如何应对呢?以下是小编整理的关于全球气候变暖的相关内容，欢迎阅读和参考! 全球气候变暖的原因和应对措施 自西方工业化以来，世界人口在 (1)人口剧增因素：近年来人口急剧地增长，人类在日益强大的大规的剧增是导致全球变暖的主要因素之模生产和经济活动中，大量开垦耕地、一。同时，这也严重地威胁着自然生掠夺与毁坏森林资源，大量地燃烧化态环境间的平衡。这样多的人口，每工原料，释放了大量的温室气体，致年仅自身排放的二氧化碳就将是一惊使大气成分发生变化，导致了全球气人的数字，其结果就将直接导致大气候日趋变暖。中二氧化碳的含量不断地增加，这样 全球变暖将给地球和人类带来复形成的二氧化碳“温室效应”将直接影杂的潜在的影响，既有正面的，也有响着地球表面气候变化。 负面的。例如随着温度的升高，副极(2)大气环境污染因素：目前，地地区也许将更适合人类居住;在适环境污染的日趋严重已构成一个全球当的条件下，较高的二氧化碳浓度能性重大问题，同时也是导致全球变暖够促进光合作用，从而使植物具有更的主要因素之一。现在，关于全球气高的
固碳速率，导致植物生长的增候变化的研究已经明确指出了自上个加，即二氧化碳的增产效应，这是全世纪末起地球表面的温度就已经开始球变暖的正面影响。但是与正面影响上升。 相比，全球变暖对人类活动的负面影(3)海洋生态环境恶化因素：目响将更为巨大和深远。今年8月份前，海平面的变化是呈不断地上升趋CCTV报道，由于气候变暖的影响，势，根据有关专家的预测到下个世纪珠穆朗玛峰的顶峰下降了米。祁中叶，海平面可能升高50cm。如不采连山冰川缩减危及河西走廊：近年来，取及对措施，将直接导致淡水资源的祁连山冰川融化比上个世纪70年代减破坏和污染等不良后果。另外，陆地少了大约10亿立方米，冰川局部地区活动场所产生的大量有毒性化学废料的雪线正以年均米的速度上升。和固体废物等不断地排入海洋;发生专家分析，冰川退缩，雪线上升除自在海水中的重大泄(漏)油事件等以及然气候因素外，另一个主要原因是人由人类活动而引发的沿海地区生态环口膨胀，超载超牧，过度开垦，乱砍境的破坏等都是导致海水生态环境遭 破坏的主要因素。 滥伐，滥采地下水有关。 (4)土地遭侵蚀、沙化等破坏因 素。造成土壤侵蚀和沙漠化的主要原因是不适当的农业
Globalization and Internet （全球化/Internet） The drawing vividly unfolds …(Describe the picture描述图画) This phenomenon which this picture points out is one of numerous international phenomena to have become common and already attracted broad attention in the world in recent years. Globalization/Internet, in brief, makes the whole world a small village. Globalization/Internet offers extensive opportunities for every country in the world to develop their economy, improve their regime, enrich their culture, update their technology and so forth, but globalization/Internet is a two-edged sword: it can bring both benefit and harm. (Present state/situation现象描述+ /Meaning含义) 这幅图画指出的这个现象是近几年在世界上众多已经变得普遍并且已经引起了广泛关注的 国际/世界现象之一。全球化/Internet，简言之，就是使整个世界变成一个小村子。全球化/Internet给予了这个世界上的每一个国家广泛的机会去发展它们的经济、改善它们的政体、丰富它们的文化、更新它们的技术等等，但全球化/Internet是一把两刃剑：既有利的一面，也有害的一面。 We must first understand the nature of the problem. On the one hand, globalization/Internet offers extensive opportunities for every country in the world. On the other hand, One of the most controversial aspects of globalization/Internet is the global spread and dominance of American culture. 我们必须先要理解这个问题的本质。一方面，全球化/Internet为这个世界上的每一个国家提供了广阔的机会。另一方面，全球化/Internet最具有争议的其中一个方面是认为全球化就是美国文化的全球扩张和一统天下。 I have some suggestions about dealing with this problem. First and foremost, Globalization/Internet can bring benefit. In the past twenty years, in the process of globalization and explosive development of the Internet, China has brought about rapid economic growth, sustained social progress and continuous betterment of people's living standard, so we should accept. Secondly, it can also bring harm. China has been experiencing the collapse of own traditional virtue in the process.
自然生态系统的平衡，更威胁人类的食物供应和居住环境。为应对全球变暖为应对全球变暖，科学家们想了许多方法，在此向大家介绍十种最疯狂的解决方案： 1、为地球建造太阳镜 一些科学家提议可以为地球建造太阳镜以应对全球变暖：在赤道附近放置一圈散射太阳光的微粒，以减少太阳对地球的辐射，抵消温室效应产生的热量。这一疯狂想法可能需要花费数万亿美元。 2、在海洋中投入大量铁 进行光合作用的浮游生物利用二氧化碳制造食物，随着这些生物的死亡，二氧化碳也沉入海底。铁元素能够刺激浮游生物的生长，有人建议在海中投入大量铁以刺激大量浮游生物的成长，从而吸收过量二氧化碳。 3、延长飞机航程，降低飞行高度 飞机产生的飞行云隔离了地球热量的蒸发。一些科学家建议飞机降低飞行高度，这样就不可能形成飞行云。飞行高度降低意味着飞行距离增加，但科学家认为飞行云减少产生的效应将抵消燃油增加带来的损害。 4、在海洋表面种植水藻 环境保护者詹姆斯提出利用抽水管道将海洋深处富氧化水引到海洋表面，养殖大量海藻用于吸收空气中的二氧化碳，然后二氧化碳会随着海藻死后沉入海底。 5、种植假树 科学家提议种植10万棵假树用于吸收排放的二氧化碳，这些假树可以通过过滤器吸收二氧化碳并储存起来。这种假树的模型可能和集装箱一样大，但吸收的二氧化碳将是真正树木能力的数千倍。 6、在空气中注入气雾剂 空中悬浮的某些气雾对大气有降温效果，这些小分子可以拦截一部分太阳辐射，并反射到太空。科学家提议可以模拟火山喷发，向大气中注入大量气雾来应对全球变暖。 7、禁止使用塑料袋和灯泡 为了应对白色污染，利用可回收纸袋或循环使用的环保布袋。更加节能的荧光灯取代白炽灯可以减少温室气体的排放和家庭用电。
经济全球化英语作文 Prepared on 22 November 2020
This phenomenon of economic globalization is one of numerous international phenomena which has become common and already attracted broad attention in the world in recent years. Econo mic globalization, in brief, makes the whole world a smaller village. Economic globalization offer s abundant opportunities for every country in this world to develop their economy, enrich their culture,improve their regime, update their technology and so on, but of course it is a two-edge d s w o r d:i t c a n b r i n g b o t h b e n e f i t a n d h a r m. It is important that we must understand the nature of the problem. On the one hand,economic globalization offers a mass of opportunities for every country . On the other hand, One of the most controversial aspects is that there are many people think the America can dominance th e global economy. I have some suggestions to deal with this problem. As we all know, economic globalization can bring benefit to everyone. In the past twenty years, in the rapid process of economic globalizati on and explosive development of the Internet, China has brought about rapider economic grow th, social progress and so on, so we should accept economic globalization. Secondly, in the proce ss of explosive development of economic globalization, China has been experiencing the disintegration of the traditi onal should keep our own basic principles into the economic globalization to get more benefit.
全球变暖的原因英语作文 Many people believe that human activity is causing the earth’s temperature to rise. They say that this global warming will have dreadful consequences for our environment, such as drought and flooding. 很多人都认为是人类活动导致了全球气温上升。他们说全球变暖会对我们的环境造成可怕的后果，如干旱和洪水。 What should governments do to help prevent global warming? Give reasons for your suggestions. 政府该做什么来防止全球变暖呢?给出你建议的原因。 The earth’s temperature is rapidly changing. As a result there has bee n a lot of climate change such as heat waves, droughts and floods. Scientists believe that this is the result of human activity, which is polluting the Earth’s atmosphere. This could become a disaster if governments do not act to help prevent global warming. They can act in three ways; by supporting research, by making laws and by keeping the general public informed. 地球的温度正在迅速改变。导致很多气候变迁，如热浪、干旱和洪水。科学家认为这是人类活动污染了地球的大气层的结果。如果政府不采取行动来防止全球变暖的话，这可能会成为灾难。他们可以在三个方面上有所行动;支持研究，制订法律和保持公众知情。 Firstly, governments can support research. For example, they should encourage companies to develop vehicles that cause less pollution. They should also support alternative sources of electricity from wind and water rather than from oil and coal. As well, they should sponsor conferences to discuss the effects of greenhouse gas emissions and possible solutions to the problem. 首先，政府可以支持研究。例如，他们应该鼓励公司致力于汽车研发来减少污染。他们也应该支持来自风和水的’电力替代能源，而不是来自石油和煤的电源。同时，他们应该主持会议来讨论温室气体排放的影响和可能解决问题的方案。 Secondly, they should make laws that limit the amount of greenhouse gases that companies can emit. Private companies should be rewarded for following
全球气候变暖的原因、影响、措施近100多年来,全球平均气温经历了冷－暖－冷－暖两次波动，总得看为上升趋势。1998年和2005年是近一千年来温度最高的两年。近百年来全球平均地表温度上升了0.74℃,其中尤以1910~1945年和1979~2005年的升温最为明显。20世纪后半叶北半球平均温度很可能比近500年中任何一个50年时段的平均温度都高,并且可能至少在最近1300年中是最高的。 全球气候变暖的原因有两方面： 1、大气层遭到破坏,严重的污染以及温室效应。 大气层和地表这一系统就如同一个巨大的“玻璃温室”，使地表始终维持着一定的温度，产生了适于人类和其他生物生存的环境。在这一系统中，大气既能让太阳辐射透过而达到地面，同时又能阻止地面辐射的散失，我们把大气对地面的这种保护作用称为大气的温室效应。造成温室效应的气体称为“温室气体”，它们可以让太阳短波辐射自由通过，同时又能吸收地表发出的长波辐射。这些气体有二氧化碳、甲烷、氯氟化碳、臭氧、氮的氧化物和水蒸气等，其中最主要的是二氧化碳。近百年来全球的气候正在逐渐变暖，与之同时，大气中的温室气体的含量也在急剧地增加。许多科学家都认为，温室气体的大量排放所造成温室效应的加剧可能是全球变暖的基本原因。 排放温室气体的人类活动包括：所有的化石能源燃烧活动排放二氧化碳。在化石能源中，煤含碳量最高，石油次之，天然气较低；化石能源开采过程中的煤炭瓦斯、天然气泄漏排放二氧化碳和甲烷；水泥、石灰、化工等工业生产过程排放二氧化碳；水稻田、牛羊等反刍动物消化过程排放甲烷；土地利用变化减少对二氧化碳的吸收；废弃物排放甲烷和氧化亚氮。人类燃烧煤、油、天然气和树木，产生大量二氧化碳和甲烷进入大气层后使地球升温，使碳循环失衡，改变了地球生物圈的能量转换形式。自工业革命以来，大气中二氧化碳含量增加了25%，远远超过科学家可能勘测出来的过去16万年的全部历史纪录，而且目前尚无减缓的迹象。 2、人口膨胀，超载超量，过度开垦，乱砍滥伐，滥采地下水有关。 近年来人口的剧增是导致全球变暖的主要因素之一。同时，这也严重地威
Globalization With the rapid social and economic development, globalization comes not to be an unfamiliar word to all of us. Though we are living in the affection of it, yet it is hard to tell it’s advantages and disadvantages. Globalization phenomenon is an outcome of social development. The typical types are economic globalization, cultural globalization. As we all know, it is a double-edged sword. Therefore, we must pay more attention on this phenomenon and it’s development trend. Globalization has so many advantages, such as it makes the world become a small village and let people touch each other more convenient and easy, it increase free trade between nations and give the developing countries a terrific opportunity to develop themselves in all aspects quickly. What’s more, it can reduce the cultural barriers and let various of cultural get a better communication and development. On the contrary, it also has a lot of disadvantages. Because under globalization, every country’s economy can make a great influence of others, it make the economy of the world more fragile. In order to possess the good chance and precious resources, the disputes and even wars may take place between nations. In recent years, great risk of diseases being transported between nations has also become a threaten to people. As the globalization has become an irrevocable trend, we must adjust it. This phenomenon is an opportunity as well as a challenge. Consequently, every person, every
中国如何应对全球气候变化 近年来，作为最大的发展中国家，中国不仅在本国环境治理、节能减排、发展绿色低碳技术等方面取得骄人成绩，在主动承担国际责任，积极参与国际对话，支持发展中国家应对气候变化，推动全球气候谈判、促进新气候协议的达成等方面也做出了积极贡献。 从2014年底中美两国签署气候变化联合声明，到今年中国向联合国提交应对气候变化“国家自主贡献”文件，并先后与印度、巴西、欧盟、美国、法国等国家和地区就气候变化发表联合声明，中国通过一系列郑重承诺，接连向世界传递出强有力的政治信号，表明其坚持走绿色、低碳、可持续发展道路的决心，获得广泛赞誉。 《公约》秘书处执行秘书菲格雷斯日前在一次记者会上回答“哪个国家应对气候变化的行动可称榜样”的问题时指出，中国采取了“令人印象非常深刻的”应对气候变化行动，具有榜样意义。她说，中国在“国家自主贡献”文件中确定，在2030年前后使其温室气体排放达到峰值，计划于2017年启动全国碳排放交易体系，并把应对气候变化的行动列入“十三五”发展规划中。这些都表明，中国在对待气候变化问题上“非常非常认真”。作为世界第二大经济体、最大的发展中国家，中国在各类国际事务中的影响力与日俱增。因此，法国作为巴黎气候变化大会的主办国，期待中国为大会的成功提供支持。 法国总统奥朗德表示，中国在巴黎气候变化大会中扮演“重要角色”。法国总统环境问题特别顾问尼古拉·于洛此前在接受新华社记者采访时，高度肯定了中国在应对气候变化领域“毋庸置疑的示范作用”。他说：“中国有能力在提出目标后将其实现，甚至以更快速度实现目标。” 中国支持定期盘点包括减排在内的相关长期目标的实施进展，也表明其有能力与自信进行气候变化治理。积极应对气候变化，既是一个负责任大国应尽的义务，也符合中国当前自身发展的迫切需要。目前，中国已成为世界节能和利用新能源、可再生能源的第一大国。2014年，中国单位国内生产总值能耗和二氧化碳排放分别比2005年下降29.9%和33.8%。在气候治理问题上，中国在加速本国发展的同时始终不忘向广大经济、资源、技术水平较为落后的国家和地区提供力所能及的支持。 在今年9月发表的《中美元首气候变化联合声明》中，中国宣布出资200亿元人民币建立“中国气候变化南南合作基金”，帮助其他发展中国家应对气候变化。不少国家和国际机构，特别是发展中国家人士对此非常赞赏，认为中国这一举措对世界应对气候变化做出了贡献，展现了其勇于承担国际责任、履行国际义务的大国风范，给其他国家尤其是发达国家做出了榜样。 气候变化是一项全球性威胁，关系到世界各国的切实利益。中国支持巴黎气候变化大会达成一份全面、均衡、有力度的协议，主张协议应以《公约》及其《京都议定书》为基础。日前发布的《中国应对气候变化的政策与行动2015年度报告》说，中方愿意按照“共同但有区别的责任”原则、公平原则和各自能力原则，与各方一道积极建设性推动谈判进程，构建公平合理的国际气候制度。
全球化的影响 范文(一) Nowadays we can enjoy the same films, fashions, brands, advertisements and TV channels. The evident difference between countries is disappearing. To what extent do you think the disadvantages overweight the advantages of this? Globalization creates conditions for widening international exchanges, strengthening mutual understanding between nations, expanding cultural, educational, and scientific cooperation between nations and countries, enjoying the cultural achievements of people around the world which encourages the process of modernization and the enrichment of national culture. However, these conditions also create the possible danger of diminishing the national culture with a negative impact on the pre123vation of national identity. Through globalization and an open door policy, erroneous concepts and a lowering of ethical standards, a selfish and individualistic lifestyle and harmful cultural products can easily be imported into the country. At present, modern information technology which in the main is controlled by US is hourly and intensively disseminating US ideology, way of life, culture and films across the world. Even US food is promoted so that some people consider globalization as global Americanization. During the process of economic globalization, inequality between developed and developing countries has been increasing and the gap between the rich and the poor has become wider, most of the result of globalization go to assist developed countries. Globalization does not pose equal interests and risks to all nations. With an overwhelming advantage compared to most of the developing countries in terms of finance and the level of science and technology, developed ca123alist countries control the situation of economic globalization. For these reasons, globalization is a fierce and complicated struggle in both cultural and ideological fields. We take the initiative in international economic integration but also have to take the initiative in fighting to keep our distinct culture resisting pro-foreign and cross-bred phenomena, and overcoming the psychology of preferring money over ethical values.
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 responsibilities. 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 person ability is slight, but if everyone can make a little effort, the achievement 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 responsibilities to this planet. In addition, we can should not to make greenhouse gases, specifically, 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. 中国是一个有着5000 多年悠久历史的文明古国。长期以来，中国人民以自己的勤劳智慧创造了灿烂的中华文明，为人类文明进步作出了重大贡献。北京就是一座有 3000多年悠久历史的文明古城，800多年前北京开始建都。 离今晚会场人民大会堂不远的地方，就是举世闻名的故宫。故宫始建于600年前，是世界上现存最大最完整的古代宫殿建筑群。从历史悠久的北京和建筑精美的故宫这些缩影中，人们就能够生动地感受到中华文明源远流长、博大精深的深厚底蕴，感受到中华民族自强不息、顽强奋进的壮阔历程。 China is an ancient civilization with a history of over 5,000 years. The Chinese
对全球变暖问题的原因、影响及应对措施的探讨 全球变暖是指全球气温升高。近100多年来，全球平均气温经历了冷－暖－冷－暖两次波动，总得看为上升趋势。进入八十年代后，全球气温明显上升。1981～1990年全球平均气温比100年前上升了0.48℃。导致全球变暖的主要原因是人类在近一个世纪以来大量使用矿物燃料（如煤、石油等），排放出大量的CO2等多种温室气体。由于这些温室气体对来自太阳辐射的短波具有高度的透过性，而对地球反射出来的长波辐射具有高度的吸收性，也就是常说的温室效应"，导致全球气候变暖。全球变暖的后果，会使全球降水量重新分配，冰川和冻土消融，海平面上升等，既危害自然生态系统的平衡，更威胁人类的食物供应和居住环境。 一、全球变暖的原因 1.人口剧增因素 近年来人口的剧增是导致全球变暖的主要因素之一。同时，这也严重地威胁着自然生态环境间的平衡。这样多的人口，每年仅自身排放的二氧化碳就将是一惊人的数字，其结果就将直接导制大气中二氧化碳的含量不断地增加，这样形成的二氧化碳“温室效应”将直接影响着地球表面气候变化。 2.大气环境污染因素 目前，环境污染的日趋严重已构成一全球性重大问题，同时也是导致全球变暖的主要因素之一。现在，关于全球气候变化的研究已经明确指出了自上个世纪末起地球表面的温度就已经开始上升。 3.海洋生态环境恶化因素 目前，海平面的变化是呈不断地上升趋势，根据有关专家的预测到下个世纪中叶，海平面可能升高50cm。如不采取及对措施，将直接导致淡水资源的破坏和污染等不良后果。另外，陆地活动场所产生的大量有毒性化学废料和固体废物等不断地排入海洋；发生在海水中的重大泄(漏)油事件等以及由人类活动而引发的沿海地区生态环境的破坏等都是导致海水生态环境遭破坏的主要因素。 4.土地遭侵蚀、沙化等破坏因素 造成土壤侵蚀和沙漠化的主要原因是不适当的农业生产。众所周知良好的植被能保持水土流失。但到目前为止，人类活动如为获取木材而过度砍伐森林、开垦土地用于农业生产以及过度放牧等原因，仍在对植被进行着严重的破坏。目前全世界平均每分钟有20公顷森林被破坏，10公顷土地沙化，4.7万吨土壤被侵蚀。土壤侵蚀使土壤肥力和保水性下降，从而降低土壤的生物生产力及其保持生产力的能力；并可能造成大范围洪涝灾害和沙尘暴，给社会造成重大经济损失，并恶化生态环境。 5.森林资源锐减因素