About climate warming

1. Population explosion factor

The rapid population growth in recent years is one of the main factors leading to global warming. At the same time, it also seriously threatens the balance between the natural ecological environment. With such a huge population, the annual carbon dioxide emitted by itself will be an amazing number, and the result will directly lead to the continuous increase of carbon dioxide content in the atmosphere, thus directly affecting the climate change on the earth's surface.

2. Atmospheric environmental pollution factors

At present, the increasingly serious environmental pollution has become a major global problem, and it is also one of the main factors leading to global warming. Now, the research on global climate change has clearly pointed out that the temperature of the earth's surface has started to rise since the end of last century.

3. Deteriorating factors of marine ecological environment

At present, the change of sea level is on the rise. According to the prediction of relevant experts, the sea level may rise by 50 cm by the middle of the next century. If no measures are taken, it will directly lead to the destruction and pollution of fresh water resources and other adverse consequences. In addition, a large number of toxic chemical wastes and solid wastes produced by land activities are continuously discharged into the sea; Major oil spills in seawater and the destruction of coastal ecological environment by human activities are the main factors leading to the destruction of seawater ecological environment.

4. Land erosion, desertification and other destructive factors

5. Factors of sharp decline of forest resources

Worldwide, due to natural or man-made factors, the forest area is decreasing sharply.

6. Hazard factors of acid rain

The influence of acid rain on ecological environment has attracted more and more attention all over the world. Acid rain will destroy forests, acidify lakes and endanger living things. At present, most of the acid rain in the world is concentrated in Europe and North America, and most of them occur in developed countries and some developing countries. Acid rain is also occurring and developing rapidly.

7. Factors accelerating species extinction

Life on the earth is a precious resource for human beings, and the diversity of life is the basis for human survival and development. But at present, the biological species on the earth are disappearing at an unprecedented rate.

8. Water pollution factors

According to the water quality monitoring project of Global Environmental Monitoring System, about 65,438+00% of the monitored rivers in the world are polluted. Since the beginning of this century, the water consumption of human beings is increasing rapidly, and the scale of water pollution is also expanding, forming a contradiction between supply and demand of fresh water. Therefore, the treatment of water pollution will be very urgent and important.

9. Toxic waste pollution factors

More and more toxic chemicals not only pose a serious threat to human survival, but also do harm to the ecological environment on the earth's surface.

10 Changes of the Earth's Periodic Orbit

The earth's periodic orbit changes from ellipse to circle, which is closer to the sun. According to a scientist's research, the temperature of the earth has been alternating between high temperature and low temperature, with certain regularity.

Global warming is related to the greenhouse effect caused by a large number of greenhouse gases emitted by human beings. However, researchers in Japan and Denmark recently pointed out that the increase of greenhouse gases is not the only cause of climate warming, but the change of solar activity has also played a role in promoting it.

According to the Nihon Keizai Shimbun, Professor Koji Ito from the Institute of Environmental Information of Yokohama National University in Japan made a chart. As can be seen from the figure, the curve between the average temperature of the earth and the intensity of the solar magnetic field in the past 200 years is basically the same. Ito koji concluded that solar activities also have an impact on climate warming, and it may not be comprehensive to explain climate warming only by increasing greenhouse gases.

The influence of solar activity on the earth's temperature has long been concerned by experts. Generally speaking, when there are many sunspots, the solar activity is intense. For example, according to historical records, sunspots rarely appeared in the17th century, when the earth's climate was relatively cold. However, the detection information obtained on the ground also shows that the change range of solar radiation energy caused by the change of solar activity intensity is only 0. 1%, and such a small change does not seem to have much impact on the climate.

Recently, however, there has been a hypothesis in the international space science community that the change of solar activity will change the cloud cover over the earth, "amplify" the influence of the sun on the earth, and then affect climate change. Danish scientists who put forward this hypothesis speculate that cosmic rays emitted to the earth can ionize part of the atmosphere more stably, making it easy for clouds to form, thus absorbing a lot of solar radiation and lowering the temperature of the earth. However, the high-speed charged particle flow released at the peak of solar activity can interfere with cosmic rays that are directed at the earth, making it difficult for clouds to form, which in turn leads to an increase in the temperature of the earth. At present, Danish researchers are studying various factors related to cloud formation to demonstrate the above hypothesis.

Some Japanese experts also suggested that although the change of solar radiation energy is only 0. 1%, they found that this energy change can change the absorption of solar ultraviolet rays in the earth's atmosphere by several percent, and the increase of this absorption will increase the temperature of the atmospheric ozone layer. Koji Bangyan, head of the second research department of Japan Meteorological Institute, said that the change of ozone layer temperature will affect the troposphere, thus affecting the cold current and monsoon, but it is not clear how much the above mechanism will affect global warming. In order to continue to study this subject, an international research group composed of Koji Bangyan and others began to work last year.

Second, the status quo.

Global warming refers to the increase of global temperature. In recent 100 years, the global average temperature has experienced two fluctuations: cold-warm-cold-warm, with an overall upward trend. Since 1980s, the global temperature has obviously increased.

198 1 ~ 1990, the global average temperature increased by 0.48℃ compared with 100 years ago. The main reason for global warming is that humans have used a lot of fossil fuels (such as coal and oil) and released a lot of greenhouse gases, such as carbon dioxide, in the past century. Because these greenhouse gases have high permeability to visible light radiated by the sun and high absorption to long-wave radiation reflected by the earth, this is commonly called "greenhouse effect", which leads to global warming.

The specific reason for the global warming trend is that people burn fossil minerals to generate energy or cut down forests and burn them to produce carbon dioxide that enters the earth's atmosphere. According to the climate model, the Intergovernmental Panel on Climate Change predicts that by 2 100, the global temperature will rise by about 1.4-5.8 degrees Celsius (2.5- 10.4 degrees Fahrenheit). According to this forecast, in the past 65,438+00,000 years, the global temperature will change dramatically, which will have a potentially significant impact on the global environment.

In order to stop the global warming trend, the United Nations specially formulated 1992 "United Nations Framework Convention on Climate Change", which was signed into effect in the Brazilian city of Rio de Janeiro in the same year. According to this convention, developed countries agreed to reduce their carbon dioxide and other "greenhouse gases" into the atmosphere to the level of 1990 by the year 2000. In addition, countries with total carbon dioxide emissions accounting for 60% of the global total carbon dioxide emissions in these years have also agreed to transfer relevant technologies and information to developing countries. These technologies and information transferred from developed countries to developing countries will help developing countries actively respond to the challenges brought by climate change. As of May 2004, 189 countries have formally ratified the above convention.

Third, harm

According to Xinhua News Agency, researchers at the Worldwatch Institute in the United States recently warned that global warming will lead to a reduction in global agricultural production, and food shortages may occur in the next century. The researchers came to this view after analyzing the information released by the United Nations and the National Academy of Sciences and the trend of the world rice market.

According to world observation research, global warming and the decline of groundwater level will become the direct cause of global food supply shortage, which is reflected in the rising trend of global rice prices.

Global warming will also lead to sea level rise, and coastal areas will be flooded, and Daxi Island will be flooded in this way.

According to statistics released by the US government, the price of rice rose by 30%, reaching $260 per ton, although the global grain harvest last year, the prices of wheat and corn fell.

A research report published by the National Academy of Sciences (NAS) last year showed that the abnormal temperature rise during the rice growing season would reduce the harvest. In addition, the decline of groundwater level and the depletion of wells in many parts of the world will also affect food production.

Global warming is about to reach its peak in the South Pacific islands.

Global warming leads to the rapid melting of Antarctic and Arctic ice sheets and rising sea levels. According to a report of the World Bank, even a slight sea level rise of 1 m is enough to cause 56 million people in developing countries to become refugees. The world's first inhabited island submerged by seawater is about to be born-Katri Island, located in Papua New Guinea, a South Pacific country. Now the main roads on the island are waist deep, and all agricultural land has turned into mud.

Farmland waterlogging and malaria are rampant.

People in Catalina Island, dressed in traditional costumes, have always been happy in their life of knowing and doing, have been independent for hundreds of years, and have always maintained a traditional lifestyle. However, due to global warming caused by human destruction of the environment, they are facing the fate of being submerged by seawater. Paul Tabashi, an environmentalist on Katrina Island, said: "They were attacked by ocean forces and flooded constantly. The original area has been changed and destroyed, and almost all places have been submerged by seawater.

Now the original main road on the island is waist-deep, and all the agricultural land used to grow coconut trees has turned into mud. To make matters worse, mosquitoes and flies swarm and malaria is rampant.

Experts predict that in a few years, Katri Island will be completely submerged in seawater, and it is imperative for the residents of the whole island to move to villages and evacuate.

Amazon's Amazon rainforest is gradually disappearing.

The Amazon rainforest, the largest tropical rain forest in South America and even the world, is gradually disappearing, making the global warming crisis worse.

The Amazon rainforest, known as the lung of the earth, covers 5% of the earth's surface and produces 20% of oxygen and 30% of biological species in the world. Due to illegal logging and reclamation, the Amazon rainforest is disappearing at an area of 7,700 square miles per year, equivalent to the area of New Jersey. The disappearance of the rainforest will not only aggravate global warming, but also make many creatures that can only live in the rainforest face the crisis of extinction. In the past 40 years,

Four. measure

First, global warming makes some ice and snow on the earth melt, and the total amount of global liquid water increases. But the specific heat of liquid water is higher than that of ice and snow. The increased heat due to the greenhouse effect did not significantly increase the temperature of water, because the total amount of liquid water on the earth increased. Although the increased heat due to the greenhouse effect significantly increased the temperature of rocks and land on the earth, it did not significantly increase the temperature of the whole earth because of its heat exchange with liquid water on the earth, which offset the greenhouse effect to some extent and delayed the melting of ice and snow on the earth.

Secondly, the global warming makes the green plants on the earth grow vigorously, and their photosynthesis absorbs more carbon dioxide (the main part of greenhouse gases) than before the global warming, and fixes some greenhouse gases, which no longer prevents the heat on the earth from radiating outward, and also offsets the greenhouse effect to some extent.

Global warming increases the total amount of liquid water on the earth, and green plants absorb more greenhouse gases, thus delaying the trend of global warming and helping to achieve balance. Of course, with the easing of the global warming trend, the increment of liquid water and main greenhouse gases absorbed on the earth is getting smaller and smaller. If the emission of greenhouse gases such as carbon dioxide is not reduced, the earth will heat up again, causing a new round of total liquid water increase and the growth peak of green plants on the earth, thus delaying the global warming trend again. Therefore, without reducing the emissions of greenhouse gases such as carbon dioxide, the above balance will be alternately formed and broken, making the earth's temperature fluctuate more than before, rather than increasing monotonously; If we reduce or fix the emission of greenhouse gases such as carbon dioxide, we can calm the fluctuation of the earth's temperature.

When eating:

1.On April 22nd, Earth Day is a vegetarian day. Animal husbandry consumes a lot of grains and beans, as well as a lot of precious water; In order to herd cattle and raise pigs, the virgin forest was sacrificed and the greenhouse effect was produced.

Second, eat less (cook at home, eat out in moderation, and pack up and go home if you can't finish eating)

Third, fast for one day (experience the taste of environmental protection in the body)

4. Refuse to use styrofoam, and ask cafeterias or coffee shops to use paper cups (styrofoam is a carcinogen, and it also destroys the ozone layer that protects the earth. Styrofoam cups and buffet plates for drinking coffee are still rubbish after hundreds of years and continue to pollute the environment.

5. Refuse to buy alpine tea and high-cold vegetables (alpine tea and high-cold vegetables make forests disappear in Taiwan Province Province, destroy soil and water conservation in mountainous areas, fail to play a role in water storage, use a large number of pesticides and fertilizers, and pollute water sources and reservoir ecology).

◎ clothes:

1. Know the source of fabric: 1. Only natural materials such as natural cotton and hemp (organic) can be recycled. 2. Buy and maintain clothes according to the washing label to prolong the life of clothes.

Second, the demand is determined by four factors: the amount of laundry, the capacity of the home, lifestyle and economic situation. Try to control it as well as possible, and don't overdo it.

Third, the old clothes are newly worn:

1. self-cognition: consideration of body shape, skin color and lifestyle.

2. Find out the key points of fashion: such as length and color. Generally, simple and good cutting (three-dimensional cutting) can best express the interactive relationship between people and materials.

3. Accessories, such as scarves, pins, belts, etc., are small, diverse, effective and easy to collect. A small amount of clothes is a reliable accessory that highlights the artistic effect of dressing.

◎ Live:

First, use more second-hand furniture (whether buying a house or renting a house, using more second-hand furniture can not only recycle and save resources, but also help each other and enhance interpersonal friendship if flea markets for regular second-hand goods exchange can be held in offices, communities and the Internet).

Second, use planting greening to do home decoration (don't do excessive decoration at home, be simple and natural. Home decoration does not necessarily need artificial materials, it is best to use ecological natural materials. Potted plants of all kinds of flowers and plants, try to use native tree species, leave more natural soil in the courtyard at home, and use less cement or hard pavement).

Please use utensils to hold water, wash fruits and vegetables, wash dishes, brush your teeth and wash your face, so as to save precious water resources (China is the 18 water-deficient country in the world. At present, South Taiwan Province Province has fallen into severe drought, but our current water demand has reached the standard of 100. At present, the propaganda policy of water saving in France is to take a bath once a week. If our water consumption continues to deteriorate, we will face the same situation.

Fourth, the power supply and air conditioning in the room are used centrally (try to turn on the air conditioning in one room as little as possible, and try to concentrate on office when there are few people, so as to reduce the amount of air conditioning and electric lights).

◎ Line:

First, take the stairs instead of taking the elevator (people who live in the building, whether in the office or at home, might as well take the stairs instead of taking the elevator if they are not in a hurry, which will save energy and exercise).

Second, go out and walk more, ride a bike, use the public transport system, drive less and ride a motorcycle.

◎ Other:

1. If you keep a pet, please refuse to buy a cat and dog pest control ring (when you discard the cat and dog pest control ring, its pesticide composition is very destructive to the earth and will cause serious harm to the animal's body).

2. Refuse to buy products that use animals for experiments (a large number of cruel and unnecessary animal experiment plans not only waste taxpayers' taxes, but also cause natural genetic problems, which do not help and improve the ecological environment and major health problems in Taiwan Province Province.

Refuse to ride or use balloons (balloons are difficult to decompose chemicals and cause serious pollution to the earth. In addition, when the balloon floats away, it may lead to the death of wild animals (eagles, whales or turtles, etc.). ). (Note: Since June 1 2008, China has implemented the system of paid use of plastic shopping bags in all supermarkets, shopping malls, bazaars and other retail places to encourage consumers to carry cloth belts and shopping baskets again and reduce the use of plastic bags. )