To maintain the ecological balance, the key is not to kill or not to kill, but to have a certain degree. When wolves threaten the ecological balance, killing some may help the balance, but when there are too few wolves, there will be terrible consequences. There is an example, please refer to some.
Colorado, USA, is near the canyon. There is a Kaibapu prairie with many deer on it. Although the water plants here are rich and beautiful, the number of wild deer is always around 4, and no matter how good the grass grows, it will not increase much. It was found that the number of deer could not be increased because of the natural enemies of deer-wolves and mountain lions. So, from 197, people began to fight against wolves and mountain lions. After 1 years' efforts, wolves and mountain lions have been beaten out of sight, and wild deer are getting up year by year. By 1942, it had reached 1,. Who knows, in the following two winters, the number of wild deer decreased sharply. This is because the number of deer continued to decrease, and by the 194s, there were only about 1, deer left. At this time, people were surprised to find that although there were fewer deer, there was still not enough grass to eat, because the explosive development of deer in the 192 s brought devastating damage to grassland vegetation, and grass could not grow in many places. After many years, this grassland has not recovered.
In the grassland ecosystem, the deer eats grass, and the wolf eats deer. After the wolf dies, its body is decomposed by microorganisms and turned into fertilizer, which is absorbed by the grass. In this way, a food chain is formed. In the past, there was a certain range of how much grass grew on the grassland, how many deer were supported by these grass, and how many wolves were supported by these deer, which maintained relative stability and balance. However, after the wolf was eliminated, the balance was broken, and the whole grassland changed greatly. Once this change happens, there should be a chain reaction, which cannot be recovered in a short time.
In the ecosystem, every living thing occupies its own position and plays a certain role, which no one can replace.
The image of a wolf is cruel and fierce, but this is only one aspect, and it is exaggerated by people. Wolf is also one of the whole biological chain, which plays a very important role in protecting ecological balance; I think this truth is easy to understand. I want to tell you a true story reported on TV the other day. I wonder if you have seen it. It is said that a wolf came to a village. At first, the villagers were afraid, but later it was found that the wolf didn't hurt people, and there were fewer and fewer rabbits that ruined crops, so people were no longer afraid of it, and even children dared to approach it. But things didn't go on so peacefully. The worry came. At first, some people found that the chicken was lost, and there was ironclad evidence that the chicken thief was the wolf. Not only that, people found that the wolf was pregnant again. The villagers were afraid that it would attract other wolves, and they were all on pins and needles. People's worries were justified. Can it conceive without a male wolf? At this time, the relevant departments in the county were alarmed, and a carpet search was carried out in the territory of Fiona Fang for dozens of kilometers. As a result, no clues were found. It was not until this female wolf began to dig up soil and make holes, grab grass and prepare for childbirth that someone reminded: Is it the big black dog in the village? Is it? Later, the wolf finally gave birth, and two of them were black, just like the big black dog in the village. You said that the big black dog didn't do a good job, but who did?
-----------. Besides, wolves also have many advantages, for example, wolves are very United, and they often rely on the power of unity when hunting. The wolf is responsible, patient, intelligent, affectionate, affectionate and so on. Therefore, wolves should not be killed, or they will lose their ecological balance.
Although wolves are very ferocious animals, they still have a role to play. 1. If deer are killed, other animals may continue to grow, leading to ecological imbalance and a vicious circle. 2. If wolves are killed, people will still be affected. For example, if wolves are killed, deer will continue to grow. Sick deer will live. All trees and other vegetation will be eaten up, leading to water and soil flooding. When the flood comes, it can't be resisted, so it should be allowed.
-----------. Because everything is complementary to each other, if you kill a wolf, it will affect the ecological balance and cause a vicious circle. Now the zoo can tame animals such as tigers and lions, so why can't there be a place for wolves? Life is only once for them, and they also expect human beings to give them care and protection. If it weren't for the vicious killing of human beings, how could things like SARS happen one after another that human beings were caught off guard? So I think it's time for human beings to stop, and use our kindness to awaken their animality! I am not in favor of killing wolves
----------------------. The key is not to kill or not to kill, but to have a degree. When wolves threaten the ecological balance, killing some may help the balance, but when there are too few wolves, there will be terrible consequences. There is an example, please refer to some.
Colorado, USA, is near the canyon. There is a Kaibapu prairie with many deer on it. Although the water plants here are rich and beautiful, the number of wild deer is always around 4, and no matter how good the grass grows, it will not increase much. It was found that the number of deer could not be increased because of the natural enemies of deer-wolves and mountain lions. So, from 197, people began to fight against wolves and mountain lions. After 1 years' efforts, wolves and mountain lions have been beaten out of sight, and wild deer are getting up year by year. By 1942, it had reached 1,. Who knows, in the following two winters, the number of wild deer decreased sharply. This is because the number of deer continued to decrease, and by the 194s, there were only about 1, deer left. At this time, people were surprised to find that although there were fewer deer, there was still not enough grass to eat, because the explosive development of deer in the 192 s brought devastating damage to grassland vegetation, and grass could not grow in many places. After many years, this grassland has not recovered.
In the grassland ecosystem, the deer eats grass, and the wolf eats deer. After the wolf dies, its body is decomposed by microorganisms and turned into fertilizer, which is absorbed by the grass. In this way, a food chain is formed. In the past, there was a certain range of how much grass grew on the grassland, how many deer were supported by these grass, and how many wolves were supported by these deer, which maintained relative stability and balance. However, after the wolf was eliminated, the balance was broken, and the whole grassland changed greatly. Once this change happens, there should be a chain reaction, which cannot be recovered in a short time.
In the ecosystem, every living thing occupies its own position and plays a certain role, which no one can replace.
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there are too few wolves. In North America, where wolves were once everywhere, humans were killed in large numbers either to satisfy the genetic inertia of hunting, or to protect family property, or to prefer to protect some rarer animals (such as deer and bison). It is said that 2 million wolves were wiped out during the great development of the United States alone.
In Europe, wolves have been living in a state of being squeezed by modern human civilization since the Industrial Revolution. Wolves in the British Isles bear the brunt. In 1743, the world map of wolves no longer included there. After that, wolves in France, Belgium, the Netherlands, Denmark, Switzerland and other countries disappeared one after another, and wolves in Germany and Italy could only survive in a narrow area.
In China, the policy of encouraging wolves for decades in a row has made most people in China have not heard of wolves for a long time. There used to be a vast territory with wolves except some islands, but now only some wolves are distributed in the western border.
in 1962, American popular science writer Rachel Carson published a book "Silent Spring" after a large number of investigations on the ecological damage caused by pesticides. The book describes that human beings may face a silent world without birds, bees and butterflies. It is this unusual book that has aroused people's attention to wildlife around the world and aroused people's environmental awareness.
In September, 1973, in Stockholm, Sweden, the Species Survival Committee of the World Conservation Union set up a "Wolf Expert Group" here, and drafted and published the "Wolf Protection Declaration": "Wolf is a very important creature in many lives on the earth, and it has the right to live on this earth."
Wolf Expert Group is an international organization, with more than 2 countries participating. The wolf expert group holds an international conference every year to exchange and study various issues related to wolves in order to promote the movement of protecting wolves.
People have a deep-rooted idea that wolves are evil. To persuade people to protect wolves, scientists must first understand wolves and then tell the public what they know.
In the quiet town of Yili, Minnesota, USA, there is a special research institution-World Wolf Research Center. Many researchers gather here every year, including experts with topics and visiting scholars from all over the world. At the same time, there are dozens of students studying for degrees here.
The tools used by the Center to study wolves are very advanced, including helicopters, airships, snowmobiles and light aircraft that can be propelled by one person. Observation equipment includes all kinds of high-power and low-power cameras, as well as radio tracking vehicles equipped with satellite positioning systems. Such advanced equipment is to better study the distribution, number, migration and predation of wolves, as well as their family status and mental state. Full research makes scientists know more about wolves, and they tell these things to the people, dispelling the original concerns in people's minds.
There are museums and exhibition rooms in the research center, all of which are open to the public. The purpose is to publicize that wolves should be treated correctly. At the same time, wolf seminars are held many times a year. This kind of seminar is community-oriented, and you can attend as long as you want. There are ranchers, hairdressers, bakers, yellow-mouthed children and elderly people. People can ask experts all kinds of questions about wolves here. The audience ranges from dozens to six or seven hundred, and even young mothers are listening with their children in their arms. There is a microphone in the aisle, and people can ask questions at any time. The questions are also varied, and no one thinks that your questions are layman's words.
"Is the wolf harmful or beneficial to people?"
"What if I meet a wolf in the wild?"
"Do wolves eat people or not?"
experts will answer all questions. The special issue of the seminar linked with this link, Wolf, informs the information of wolves, presents the distribution of wolves in various countries and expounds the problems faced by wolves. This magazine also contains contributions from fans from all over the world, as well as their drawings, some of which show the power of wolves, some show the cuteness of little wolves, and so on. According to statistics, more than 1 articles are published through it every year and shared with lovers all over the world. In addition, the research center also has a special website to make it convenient for people to know all about wolves without leaving home.
It is not easy to make people have a good impression on wolves. For example, many people hate wolves' barking. Experts from the World Wolf Research Center try their best to let people know that the wolf's cry is no different from the human voice. They are proficient in "wolf language", and wolf expert David Mitch is one of them. If you are a visiting scholar or a tourist in Yili town, you will have a chance to hear him talking to the wolf. He put his hands around his mouth, raised his chin a little, and made a long "whoa" sound. After a while, there would be a wolf barking in the opposite mountain.
David Mitch can imitate more than a dozen cries of wolves. Some wolves are sending messages and calling their companions to hunt. Some wolves are expressing their feelings, fear or hunger and so on. Many visiting scholars or tourists are very keen on imitating wolf barking, especially when they can hear the wolf's response. However, most people's wolf language is so nonstandard that wolves can't understand it at all, so many people take David Mitch's wolf quotations home and tell people about their adventures. Unconsciously, the gloomy howl becomes beautiful.
In fact, the original intention of imitating wolf barking is to study wolves. Mr. Tang Xiyang, a well-known environmentalist, once wrote in his article that wolves are hidden in the deep forest, have no fixed nest, haunt, come and go without a trace, and have a wide range of activities, so it is too difficult to observe them in the wild. Since the 196s, it has become an effective way to track wolves by imitating wolves' barking to stimulate their response. This method was first advocated by the late Canadian biologist Dr. Douglas. They started by recording the wolf's cry and playing it in the forest at night. On August 5, 1958, the recording of the wolf barking really got the response of the real wolf. In the future, in order to reduce the inconvenience of carrying recording equipment, they used the imitation of wolf barking instead of recording, and achieved the same effect.
this is a major breakthrough. Because the howling of wolves, sometimes the mutual echo between families, sometimes the collective chorus when the group meets, and sometimes the warning to defend their territory, are all important means for wolves to communicate and exchange information, and they are almost the only means in the dark jungle. In this way, people can not only find the "assembly place" of wolves and wolves, but also understand the number, distribution, population structure and biological significance of wolves' barking. < P > Scientists study wolves in order to restore their true colors. When people remove their fear of wolves, the next step is to reintroduce them into their former habitats. Yellowstone National Park, Wyoming, USA, is a typical example of the success of "luring a wolf into the room". Yellowstone National Park before 1872 was a place where people.