Investigate the damage caused by humans to the local ecological environment

With the development of industry, the air is becoming more and more polluted. Because the pollutant-laden atmosphere is mobile, it can drift across the ocean, and it is not surprising that the acidic components emitted by Japan can travel to the United States and then form acid rain. Scientists have measured that 2 3 of the sulphur dioxide gas that gathers over Sweden and Norway comes from industrial areas in the UK and Germany.

The rapid development of China's economy has also caused the area covered by acid rain to expand dramatically, and by 1999 it had become the world's third largest acid rain area after Europe and North America. China still uses coal as the main fuel, which is a cause of serious air pollution.

Wastewater discharged from industrial production, domestic sewage and agricultural effluent are often the main sources of pollution today. There are many kinds of pollutants in water, including metallic, non-metallic substances and organic matter, many of which are harmful to the human body or even highly toxic Although it can be purified by artificial treatment, it is now mostly discharged into natural water bodies with only a little treatment, or even without treatment.

One. Local examples:

1) Air pollution: Air pollution in cities causes air pollution and increases the incidence of air among people.

2) Water pollution deteriorates the quality of the water environment, and the quality of drinking water sources generally declines, threatening human health and causing premature birth or malformation of the fetus.

Consequences: Serious pollution incidents not only cause health problems, but also social problems. With the intensification of pollution and the improvement of people's environmental awareness, the disputes and conflicts among people caused by pollution are increasing year by year.

Two. Examples from life:

Disposable chopsticks are everywhere, trees have fallen, you can bring your own tableware and try not to use disposable products; There are more and more private cars, more and more exhaust emissions, and the air we breathe is getting worse and worse.

Solution: You can use public transportation or walk and bike; Garbage waste is discarded at will and pollutes the environment and wastes, so you can classify garbage and turn usable waste into treasure; Water scarcity and waste, water conservation, water recycling, such as washing water for washing vegetables and flushing toilets, reuse of reclaimed water.

1. Nuclear contamination.

Nuclear contamination refers to reflective contamination caused by nuclear leakage or even nuclear ** due to various reasons. The damage range is large, the damage to the surrounding organisms is extremely serious, the potato period is long, and the post-treatment danger is complex. For example, in April 1986, a nuclear accident occurred at the Chernobyl nuclear power plant in the former Soviet Union, which caused 130,000 people to be evacuated and economic losses amounting to $15 billion.

2. Greenhouse effect.

The greenhouse effect refers to the phenomenon that carbon dioxide, nitrous oxide, methane, and freon high-temperature greenhouse gases are directed into the atmosphere, causing global temperatures to rise. Currently, the world emits about 23 billion tons of CO2 into the atmosphere every year. 20 more than at the beginning of the 20th century.

It is still increasing at a rate of 0 5 per year, which will inevitably lead to global warming, destruction of ecosystems and rising sea levels. According to relevant statistics**, global sea level will rise by about 20 cm by 2030 and 65 cm by the end of this century, seriously threatening low-lying islands and coastal zones.

3. Land degradation and desertification.

Land degradation and desertification refer to the process of degrading the quality of land and gradually desertifying due to the combined action of human factors such as human grazing, farming, indiscriminate reclamation and a series of natural factors.

Fifteen percent of the world's land area has been degraded to varying degrees by human activities. In land degradation, water erosion, wind erosion accounted for 28, chemical phenomena (salinization, liquefaction, pollution) accounted for 28, and physical phenomena (waterlogging and subsidence) accounted for the land.

The average annual rate of soil erosion is about tons per hectare. Globally, 1.5 million square hectares of irrigated land are lost every year. 70 percent of agricultural arid and semi-arid lands have been desertified, with the most severe being North America, Africa, South America and Asia.

Over the past 20 years, land degradation and desertification have increased the number of hungry refugees worldwide from 100 million to 100 million.

4. Reduction of forest area.

Forests are known as the "lungs of the earth" and "nature's general dispatch room", and they have a major regulatory function for the environment. Due to extensive imports from developed countries and land reclamation, logging and grazing in developing countries, the forest area has been greatly reduced. Greenpeace estimates that 80% of the world's primary forests have been destroyed in 100 years.

According to the latest report of the Food and Agriculture Organization of the United Nations, if the total land area is calculated, the earth's forest cover is only 26 6. Deforestation leads to soil erosion, frequent floods, global warming, and loss of species. Human beings, who blindly demand from the earth, have pushed the living earth to a very dangerous situation.

5. Species diversity is decreasing.

Reduction of biological diversity refers to the phenomenon that all biological species, including plants, animals and microorganisms, whose species diversity continues to disappear due to the loss of ecological environment, overexploitation of resources, environmental pollution and the introduction of alien species.

It is estimated that there are about 30 million species on Earth. Since 1600, 724 species have become extinct, 3956 species are currently threatened with extinction, 3647 species are endangered, and 7240

The damage to the ecological environment caused by human activities is inevitable.

Air pollution, water pollution, noise pollution, soil pollution, destruction of plant forests, deforestation, destruction of biodiversity, desertification, destruction of wetlands, pollution of pollutants, etc., are all harms brought by human activities to the ecological environment. Air pollution is the most serious, and the pollutants in the air not only affect human health, but also affect the growth of plants and damage the ecological environment. Water pollution is also a serious problem, pollutants can cause serious harm to aquatic organisms and damage the ecological environment.

In addition, noise pollution, soil pollution, destruction of plant forests, deforestation, destruction of biodiversity, desertification, destruction of wetlands, and pollution of pollutants are also important causes of damage to the ecological environment.

First, the regional ecological balance is seriously out of balance.

The deterioration of the ecological environment in the headwaters of the Yangtze River and the Yellow River has intensified, the important lakes and wetlands along the rivers have shrunk day by day, the rivers have been cut off, the lakes have dried up, the groundwater level has dropped seriously, the forest and grass vegetation has been degraded, the ecological functions have declined, and the flood disasters and sandstorms have intensified.

The pollution of marine and freshwater fishery waters has increased, the sea erosion area has expanded, and the fishery function of the waters has been weakened. The irrational exploitation of resources has led to serious ecological damage, and environmental restoration and governance are lagging behind.

2. Biodiversity is seriously threatened.

The area of wild animal and plant species rich areas in China has been decreasing, the habitat environment of rare wild animals and plants has deteriorated, the population has decreased, germplasm resources and wild relatives have been lost, the number of precious medicinal wild plants has decreased sharply, coral reefs and mangroves have been seriously damaged, and the natural fishery resources in coastal waters have declined.

Third, the quality of the rural ecological environment continues to decline. The discharge of various aquaculture wastes such as straw and livestock manure, the irrational use of pesticides, fertilizers and other agricultural chemicals, and the pollution of domestic sewage and garbage are the main problems facing the rural environment.

Extended information: Ecological destruction is a phenomenon in which ecological degradation caused by human social activities and the resulting environmental effects lead to changes in the structure and function of the environment, which adversely affect the survival and development of human beings and the development of the environment itself.

Ecological and environmental damage mainly includes: soil erosion, desertification, desertification, forest decline, land degradation, biodiversity reduction, in addition to eutrophication of lakes, groundwater funnels, land subsidence, etc. The main causes of ecological damage are:

Indiscriminate hunting, indiscriminate logging, deforestation, etc.

At present, China's ecological deterioration presents some new development characteristics: first, the accumulation of points is contiguous, from the original local and small-scale ecological damage and deterioration to regional and large-scale ecological deterioration; Second, from quantitative change to qualitative change, from the original ecological destruction based on a single element, it has gradually developed into the structural destruction of the ecology of the entire region or river basin, and the functional degradation or even complete loss.

Summary. We are happy to answer that the world produces up to 100 million tons of hazardous substances every year, which contain heavy metals, organic compounds and other substances that pollute the air, water, soil and groundwater.

We are happy to answer that the world produces up to 100 million tons of harmful substances every year, and these harmful substances contain heavy metals, organic wax compounds and other substances, which pollute the air, water, soil and groundwater.

About 7.6 billion hectares of the original 2 3 land on the earth were covered by forests, and less than 2.8 billion hectares were left in the 80th year of the Hui Jian century. Currently, the world's forests are disappearing from the earth at a rate of 18 million hectares per year.

The cause of environmental pollution is mainly caused by human factors. A large number of "three wastes" discharged by people in production and life, as well as sudden accidents in some industrial and living facilities, as well as untreated wastes in hospitals, can cause environmental pollution, which can cause harm when Yan Heshi is heavy. During the war, due to the massive use of various ** to kill and injure residents and destroy residential areas, it can cause environmental pollution and destruction.

Therefore, we must establish the awareness of environmental protection of the whole people, do a good job in ecological protection, and protect our homeland.

Hope mine is helpful to you.