1.Dramatic increase in the population factor is the dramatic increase in population in recent years leading to global warming one of the main factors.Besides,it has also seriously Adversity rib natural balance between ecological environment.So much of the population,only their annual emissions of carbon dioxide will be a staggering figure,and the results will direct derivative of the content of carbon dioxide in the atmosphere continued to increase,this form of carbon dioxide "greenhouse effect" will be a direct impact on the surface of the Earth climate change.
2.Atmospheric pollution factors Currently,the increasingly serious environmental pollution has posed a major global problem,but also lead to global warming one of the main factors.Now,with regard to the study of global climate change has been clearly pointed out that since the late 1990s from the Earth's surface temperature has started to rise.
3.Marine ecological deterioration factors Currently,sea level change is a constant upward trend,according to experts predicted that the middle of the next century,the sea level could rise 50 cm.And if they do not take measures will lead directly to the destruction of freshwater resources and pollution adverse consequences.In addition,the land-based activities have a large number of establishments toxic chemical wastes and solid wastes discharged into the ocean,and so constantly; occurred in a major Chinese seawater (leakage) as well as oil and other incidents caused by human activities in coastal areas,environmental degradation and so on that led to the destruction of water ecological environment a major factor.
4.Land by erosion,desertification,and other factors destruction
5.Factors sharp decline of forest resources in the world,due to natural or man-made factors causing forest area is substantially sharp decline.
6.Factors acid rain acid rain harm to the ecological environment has been the impact brought about by more and more world attention.Acid rain can damage forests,acid lakes,threaten biological.At present,the world of acid rain and more concentrated in Europe and North America,acid rain occurred in most developed countries,some developing countries,acid rain is also growing rapidly and development.
7.Accelerate the extinction of species on Earth biological factors is a valuable human resources,and biodiversity is mankind's survival and development.But now the biological species on Earth are being lost at unprecedented rates.
8.Water pollution factors According to the Global Environment Monitoring System show that the water quality monitoring project,the world about 10% of the water pollution monitoring,in this century,human beings are the sharp increase in water consumption,water pollution and the scale is constantly expanding,fresh water on the formation and the need for the one pair of contradictions.Clearly,the treatment of water pollution is very urgent and important.
9.Toxic waste pollution factors growing toxic chemicals not only for the survival of mankind pose a serious threat,but also for the ecological environment of the Earth's surface will also bring harm.
Global warming is a kind of "natural phenomenon". Because people burning of fossil to produce energy or mineral and the deforestation carbon dioxide from the burning of when greenhouse gas, because these greenhouse gases to the radiation from the sun highly visible through sex, and reflected on earth the highly longwave radiation absorption sex, can strongly absorbed the infrared radiation, ground is often say "greenhouse effect", causing global warming. The consequences of global warming, will cause the global to redistribution of rainfall, glaciers and permafrost melt, sea levels rising, which affects the balance of eco-system, more threatening human food supply and living environment.
The major reason of global warming is due to human activities, the green house gases such as carbon dioxide and nitrogen oxides produced by the industry traps the energy from the sun. If there is no such gas in the atmosphere, the earth will be too cold for any living organism to survive, it is natural to have some green house gases in the air and some people argue that even without human effect there are evidences show that the temperature of the earth increase and decrease in cycles, and now we are reaching another ice age. One of the concerns is that the green house gases increased so fast that it is now a big threat to all the species on the earth. The human activities that cause global warming are deforestation which means that less carbon dioxide can be converted back into oxygen, use of fossil fuels which releases the carbons that accumulated for many years and the consequences are the rising of sea level, melting of ice in the Antarctic and increase in temperature. Rising in sea level means that the space for the land organism decreases. Melting of ice mean the release of any harmful substances that may have been trapped thousand of years ago and also cause a further rise in sea level. The increase in temperature will also provide a better condition for bacteria and virus to grow which means more diseases.