caused serious damage to the earth.
The biological survival of forests,
lakes, wetlands are disappearing at
an alarming rate; non renewable
energy of coal, petroleum, natural
There are 6000000 hectares of farmland, 9000000 hectares per year in the pastoral areas of lost productivity.
sea level rise problems threatening
the survival of mankind development.
Protect the earth's resources and
environment, the pursuit of
sustainable development model is
地球界日 2014 World Earth Day
世界 地球日
世界地球日（World Earth Day，4月22日） 世界地球 日即每年的4月22日，是一项世界性的环境保护活动。
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This year of April 22nd is the forty-second world earth day. This year's Earth Day theme: "cherish the earth's resources development mode change".
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世界 地球日
。
3.The reduction of biological diversity
Scholars estimate, the world each year there are at least 50000 species extinction of species extinction, a daily average of up to 140,
gas and other face depletion due to
over exploitation; a large number of
greenhouse gas combustion
emissions causing global warming,
caused by the polar ice caps melt,
urgent.
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世界 地球日
：The ten global environmental problems
1.Global warming
Because of global warming, will have varying effects on the global, high temperature can make the polar ice melting, sea level will rise every 10 years 6 cm, thus will cause some coastal areas were flooded. Global warming may also affect the variation of rainfall and atmospheric circulation, the climate anomalies, easy to cause the disasters of flood .
155.Forest re源自uctionCaused the species reduction and soil erosion, reduce further aggravates the greenhouse effect of CO2 absorption.
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nd desertification
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2.Loss and damage the ozone layer
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Destruction of the ozone layer, will make the ground by the increase of the UV radiation intensity, which bring great harm to life on earth. Research shows that, ultraviolet radiation damage of biological proteins and genetic material DNA, causing cell death; to human skin cancer incidence; damage the eyes, causing cataracts Ershi blind;
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世界 地球日
4.Acid rain spread
Acid rain falls to the rivers, lakes, will prevent the water fish, shrimp growth, so that the fish reduced or disappeared; acid rain also caused soil acidification, the destruction of soil nutrients, the soil leanness, harm the growth of plants and crops, endanger the forest growth. In addition, acid rain corrosion of building materials
China's theme is: "treat the earth - the scientific development and constructing the harmonious".
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世界 地球日
The earth is the common home of
mankind, but human activity has