The effects of global warming and climate changeare of concern both for the environment and human life.
It is predicted that future climate changes will include further global warming (i.e., an upward trend in global mean temperature), sea level rise, and a probable increase in the frequency of some extreme weather events. Ecosystems are seen as being particularly vulnerable to climate change. Human systems are seen as being variable in their capacity to adapt to future climate change. To reduce the risk of large changes in future climate, many countries have implemented policies designed to reduce their emissions of greenhouse gases.
Global warming may be the future life of some serious effects:
1. The world's serious water shortage
In less than 20 years, and now do not have to worry about the water, hundreds of millions of Africans and tens of millions of Latin American people will face water scarcity dilemma. By 2050, Asia has more than 10 billion people will face water shortages. Under the current global greenhouse gas emissions to 2080, water shortages could threaten 1.1 billion to 32 billion people's lives.
2. rampant disease
By 2030, with global warming-related illnesses (such as malnutrition and diarrhea) will result in increased mortality in poor countries. The number of people suffering from malaria and dengue fever as a result of eating contaminated shellfish aquatic animals and will increase the number of people sick. As temperatures rise, influenza,
The spread of infectious diseases such as avian influenza will be greatly accelerated rate. To the 21st century, the mid-50s, the United States, urban smog conditions will deteriorate, compared with the 90s of the last century, with ozone-related deaths from climate will increase by 4.5%. This will allow the original into a negligible health threat big threat.
3. Tropical food production
In the future, in tropical areas will be more hot, desert and wasteland expansion, decreasing farmland and food production. By 2080, 200 million ~ 600 million people due to the effects of global warming hungry. By 2100, half of the viability of the European plant species will be substantially reduced, or face the danger of extinction, or have become extinct.
4. Coastal flooding spread
Global warming will lead to climate anomalies, the most serious threats are floods. By 2050, Europe's small glaciers will disappear, while the European continent many large glaciers will shrink dramatically. To 2080, due to rising sea levels, each year there will be 100 million people were flooded, particularly in coastal areas will face a serious threat of flooding. Live in the Arctic polar bears and other wild marine animals will change due to changes in ocean climate toward extinction.
Global warming will be eco-systems, industrial and regional cause different effects. Of global warming on marine and coastal ecosystems, water resources and coastal settlements, the destruction of the most serious. Face the most severe blow to the continent is likely to be Africa and Asia, a number of small islands and some polar ecosystems will also be a large-scale damage.
Sunday, December 20, 2009
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment