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In 1906, in order to protect the deer herd, the Kaba Forest in Arizona in the United States killed carnivores, resulting in a large number of deer breeding and finally having no food and being on the verge of extinction.
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For example, the Welland Canal, which was dug in the United States in 1929, communicated the inland water system with the sea, causing the eight-eyed eel to enter the inland water system, reducing the annual trout production from 20 million to 5,000, and seriously damaging aquatic resources. The loss of one species in an ecosystem also has the potential to disrupt the ecological balance. In the 50s, Chinese mainland killed a large number of sparrows, resulting in serious insect infestations in some areas.
The reason is that due to the killing of the natural enemy of the pest, the pest, the pest has lost its natural inhibition factor.
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If you kill too many animals, such as rabbits, etc., then the animals that can only prey on rabbits will starve to death because they can't find the animals, and they will be destroyed. And so on.
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Because we are constantly extracting ores. Wait a minute. The earth is decreasing day by day. For example, human production activities and life activities produce a large amount of waste gas, waste water and waste. Grassland overload.
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An example of an ecological imbalance caused by man-made destruction.
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The destruction of the ecological environment has restricted the sustainable development of society and economy to a certain extent. Serious river interruptions and pollution have exacerbated the contradiction between supply and demand of water resources, and have had a serious impact on the social and economic development of downstream areas. The excessive consumption of biological resources and the massive disappearance of species not only undermine the stability of ecosystems, but also further weaken the supply capacity of raw materials for industrial and agricultural production.
Ecological balance refers to the state of highly adaptation, coordination and unity between organisms and the environment in the ecosystem and between various populations of organisms through energy flow, material circulation and information transmission within a certain period of time.
When the ecosystem is in equilibrium, the components of the system maintain a certain proportional relationship, the input and output of energy and matter tend to be equal for a long time, the structure and function are in a relatively stable state, and can be restored to the initial stable state through self-regulation when disturbed by external interference. Within the ecosystem, between producers, consumers, decomposers and abiotic environments, a relatively stable state of energy and material input and output dynamics is maintained for a certain period of time.
The balance of ecosystems is often a dynamic equilibrium that nature has established over a long period of time. Once disrupted, some balances cannot be rebuilt, and the consequences may be irreparable by human efforts. Therefore, human beings should respect the ecological balance and never easily interfere with nature and cause this balance to be broken.
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The natural environment is a prerequisite for the existence and development of ecology. Organisms maintain their own growth, development, and reproduction through a constant exchange of matter and energy with their surroundings. Therefore, protecting nature, restoring the balance of ecosystems, and maintaining the harmonious development of human beings and nature have become one of the important tasks facing mankind today.
Because humans can only feed on a tiny few crops and animals**, human-centered ecosystems have a simple structure. Simple food networks are extremely unstable and prone to large fluctuations. And human beings blindly take too much from nature, which will inevitably further exacerbate the destruction of the biosphere on which they quietly depend.
It can be seen from this that curbing the infinite demand and desire of human beings for natural resources and maintaining the balance of the ecosystem is actually preserving human beings themselves. Only on the premise of maintaining ecological balance can human beings survive and develop. All human activities must follow the laws of nature and work in accordance with the laws of ecology.
1) Rational development and utilization of natural resources to maintain ecological balance.
The exploitation of natural resources must be premised on maintaining the ecological balance of the ecosystem. As long as the principle of coordination between the structure and function of the ecosystem is emphasized, the ecological balance of the system can be maintained, and at the same time, the natural development or environmental transformation can be carried out. Only when the structure and function of the ecosystem are in harmony with each other can the natural ecosystem adapt to the changes and continuous development of the external environment, and can it truly realize the potential of local natural resources according to local conditions.
Only by paying attention to the adaptation of structure and function can the chain reaction of environmental degradation due to excessive damage to structure or function be avoided.
In the use of biological resources, care must be taken to maintain a certain number and a certain age and sex ratio. This should become an ecological principle that must be followed in production activities such as forest logging, grassland grazing, and fishery and waterlogging to ensure the continuous proliferation and recovery of biological resources. Otherwise, resource depletion will inevitably occur, leading to the destruction of ecosystems.
2) Ecological benefits must be considered in the transformation of nature and the construction of large-scale projects.
To transform the natural environment and build large-scale projects, we must take into account the overall situation, taking into account both the immediate and long-term impacts. It is necessary to consider not only the benefits of economic and starvation, but also the ecological balance. The consequences of the destruction of ecological balance are often global, long-term and difficult to eliminate. For example, in the construction of water conservancy, it is necessary to consider both the use of water resources and the changes in ecological factors caused by them.
Otherwise, once the ecological environment deteriorates, the consequences will be unimaginable.
3) Vigorously carry out comprehensive utilization to achieve natural ecological balance.
In natural ecosystems, substances that are fed into the system can be recycled and reused. By applying this law in economic construction, we can comprehensively develop and utilize natural resources, turn the "three wastes" discharged in the production process into resources, energy, and harmlessness, and reduce the impact on the environment. In short, in the activities of transforming nature, as long as human beings respect nature, care for nature, and act in accordance with the laws of nature, they will certainly be able to maintain or restore the ecological balance and realize the coordinated development of man and nature.
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An example of being punished by nature for destroying the ecological balance.
Ecological balance is a dynamic balance. For example, individuals in a population of organisms are constantly dying and renewing, but in general, the population as a whole does not change drastically, so the system remains relatively stable.
Once an ecosystem is out of balance, the knock-on consequences can be very serious. For example, in the fifties, China launched a campaign to eradicate sparrows as one of the four pests. However, in the years following the mass killing of sparrows, there was a severe pest infestation that caused huge losses to agricultural production.
Later, scientists discovered that sparrows eat a large number of insects in nature. The sparrows were eliminated, the natural predators were gone, and the insects multiplied.
As a result, there was an outbreak of insects, which caused the tragic consequences of the failure of the farmland.
Ecological equilibrium is a dynamic equilibrium that nature has established over a long period of time. Once damaged, some balances cannot be rebuilt, and the consequences may be irreparable by human effort. Therefore, human beings should respect the ecological balance, help maintain this balance, and never easily intervene in nature and cause this balance to be broken.
China has always taken "game" as a delicacy. In recent years, eating and drinking have become more and more popular in society, and urban restaurants have rushed to attract customers with "wild meat", and it has rapidly spread from southern coastal cities to all parts of the country. Many of the newly rich boast of a "game feast" that includes not only wild animals in general, but even countries in their menus.
Class I and Class II protected animals. In addition, the use of wild animals as pets or as taxidermy for home furnishings is becoming a new "fashion".Some people in the city are fond of "wild meat" and "wild things", which has provoked a vicious wave of large-scale hunting of wild animals in rural areas, and because of the ban on guns, poisoning has become their main method.
Not long ago, Xinzhou, Shanxi Province sent a message exclaiming: The border areas of Shanxi, Shaanxi, and Inner Mongolia have become popular with poisoning birds and beasts, resulting in a serious situation of "thousands of mountains and birds flying away, and thousands of paths and beasts disappearing"; In some provinces and cities, the local wild animals have been eaten up and caught, so a large number of wild animals are illegally imported from other places or even abroad to restaurants. The entry of highly toxic wild animals into the market poses a serious threat to the personal and environmental safety of consumers.
There are also some domestication sites that "legally" buy and sell wild animals in the name of artificial breeding, but in fact most of them are "real" wild animals that are directly captured or confiscated from the wild, so that illegal hunting and operation can be covered.
Scientists have found that many ethnic minorities have formed unique cultures in the long-term development of coexistence with nature, and those areas called "sacred mountains" by the aboriginal inhabitants have rarely destroyed vegetation, and have maintained the most primitive state of biodiversity. However, once such a taboo culture is destroyed, the ecological environment often faces a devastating disaster. Therefore, in the opinion of scientists, relying on local ethnic customs and traditional concepts is an important way to protect the ecology.
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When the British first entered Australia, they brought rats with the ships to Australia, so cats were introduced to catch mice. Cats eradicated rats, but due to the lack of large carnivores in Australia, the introduced cats had no natural predators, so they were proliferated. When the rats finished eating, they ate the birds, and when there was no food, a large number of cats died one after another.
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A hundred years ago, in order to protect the deer herd, the Kaibab Forest killed a large number of wolves and other natural predators of deer, resulting in a large number of deer breeding. In the end, they destroyed the forest and destroyed themselves.
Deer herd breeding map.
4,000 good deer, 100,000 deer, 8,000 sick deer.
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For example, in 1859, a farmer brought 25 hares from England to Australia, causing serious damage to the Australian ecosystem because there were no natural predators.
Another example, in 1906, in order to protect the deer herd, the Kaba Forest in Arizona, USA, killed carnivores, resulting in a large number of deer breeding and finally having no food and being on the verge of extinction.
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For example, in 1859, a farmer brought 25 hares from England to Australia, causing serious damage to the Australian ecosystem because there were no natural predators.
For another example, in 1906, in order to protect the deer herd, the Kaba Forest in Arizona, USA, hunted and killed carnivores, resulting in a large number of deer breeding and finally having no food and being on the verge of extinction.
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Air pollution, littering, chopping down trees, exhaust emissions, environmental pollution, industrial pollution,
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I don't know if it's too late to tell you now?
At the beginning of the 20th century, the Kaibab Forest in northern Arizona was still lush and vibrant. There are about 4,000 deer in the forest, and the vicious and cruel wolf is the great enemy of the deer. >>>More
The reason why I say this is mainly that they are now in the domestic population has been very large, not that they have strong reproductive ability in the wild in our country but that there are too many artificial releases and abandonments, the most common ornamental turtle species in the market is Brazil, so people buy the most Brazil Once the owner has an accident or its disease, most of the owners will choose to abandon and release, so that the number of wild animals is increasing year by year Once in the wild, they will compete with native species for living space and materials, and will also prey on protozoa But the influence of this thing is almost minimal, its predatory ability is very limited, and there are only a handful of species it can kill in the wild In addition, some experts say that Brazil has had a devastating impact on the survival of native turtles and turtles, which is simply nonsense, and China's native turtles were caught by people, blaming Brazil, which is more ignorant and more shameful.
Tsunami, volcanic eruptions, flash floods, droughts, global warming, soil erosion.
Typhoon The most recent Typhoon Weipa.
1. Famous American writerO. Henryof**"The Last Leaf".tells the story of a white lie. When the sick old man looked at the withered and declining leaves and despaired, the loving painter decorated the dry tree with a carefully sketched green leafThe Tree of Life, thus maintaining the light of life that is about to be extinguished. >>>More