Text content:
Report on research-based learning project
Subject topic
Endangered animal species
group
Class 9, Grade 2, Senior High School
teacher
a surname
Group leader
Gengrenjie
Research team member
Geng Hefei Zhang Lu Hao Kong Xiaoyi
Put forward a topic/paper and explain its feasibility.
Content: Wild animals are the most sensitive biological groups in nature. With the acceleration of industrialization, more and more wild animals have lost their habitats and become endangered animals. How to effectively protect wild animals has attracted more and more attention from human society.
Objective and significance: to understand the present situation of biological extinction,
Awaken people's attention to endangered species.
Division of tasks: thesis writing: Hao Lu design questionnaire: Kong Xiaoyi
Issue questionnaires: Zhang Interview: Zhang Hefei
Information query: exchange exhibition spokesperson: Geng.
Activity plan:
September10-September 15: Discuss the research content and determine the theme.
September19-September 30th: Make the implementation plan.
65438+1October 4th-65438+1October 5th: Division of labor
10/5: Opening the topic: launching the research topic.
165438+1October 6: Field investigation of endangered animals.
165438+ 10 month 12: questionnaire.
165438+1October 9-20: Collecting information
65438+February: investigation and summary discussion: put forward suggestions, demonstrate methods, write summary reports, and further divide the work.
65438+ 10 month: close the topic, communicate and show.
Method:
1: According to the method of 30 men and 30 women in the school, three teachers from different disciplines were selected for interviews, and the parents and students outside the school 10 were investigated, and questionnaires were distributed to the respondents (online questionnaires can be conducted).
2. Search for relevant information through the Internet, books, etc.
3. Analyze and sort out the related contents and data in online books.
4. Establish relevant reports according to the sorted contents.
5. Revise and organize reports and papers.
Feasibility: the division of labor is clear, and team members can complete related affairs and reports according to their own abilities.
Expected results:
Do you know that the species of animals on the earth are decreasing sharply? One by one, one by one, they all disappear. Life on the earth originally naturally formed a food chain and depended on each other. Some people ask how long can humans live if there are only humans left in the world? Please look at the worrying animal extinction records in recent years: dodo (Indian, 178 1), blue antelope (South Africa, 1799), Marion elephant turtle (Tongsaier, 1800), great auk (Atlantic,/kloc-0). 1893), pigeons (North America 19 14), Florida monkeys (North America 19 17), Carolina parrots (North America 19 18) 000~2*! 000), Chinese alligator (1*! 500), baiji dolphin (100), giant panda (1*! 000), black rhinoceros (3*! 500 monkeys (9), woolly spider monkey (100), Yunnan golden monkey (1*! 000), wild golden monkey (700), white-browed long-armed monkey (70).
So why are endangered animals on the verge of extinction?
First, the reason of the species itself.
Species specialization and genetic failure are often the internal causes of species endangerment or even extinction. ; In the long-term evolution process, some kinds of wild animals have adapted to specific habitats, resulting in special habits (including feeding habits), which makes it difficult for them to adapt to the changed environment or other environments, and finally leads to the end of "unsuitable being eliminated".
If the giant panda takes bamboo as its main food, once it loses its existing habitat or bamboo blooms and dies in a large area, it will die in large numbers because there is no bamboo to eat, which will inevitably lead to survival crisis.
In the long-term evolution process, some wild animals are threatened by the decline of viability and heritability for various reasons, which makes their populations difficult to recover and tend to be endangered.
Zhu Huan, for example, has a small number of existing species and a certain degree of inbreeding. In addition, in the semi-reproductive state of human beings, the genes of individuals who adapt to wild life may be gradually lost, thus endangering their survival and even leading to their extinction. ;
Second, the destruction and loss of habitat;
In order to develop the economy, human beings cut down forests, reclaim lakes and seas, overgrazing and so on. , directly caused the loss of wildlife habitat, indirectly led to the endangered wildlife. ;
Forests and grasslands are one of the most important habitats for wild animals, especially mammals, birds, reptiles and insects. Deforestation of forests, followed by land reclamation and overgrazing of grasslands not only occupy the natural homes of wild animals, but also artificially divide wild animals into many isolated small populations, which greatly affects their survival and reproduction.
Reclaiming land from lakes and occupying beaches are the main reasons for the endangered waterfowl, amphibians, reptiles and fish. After wetlands, lakes and coastal beaches have been developed into industrial and agricultural land in large quantities, the animals on which they depend have lost their habitats and breeding grounds and are on the verge of extinction.
For example, the Chinese alligator has lived on the earth for hundreds of millions of years. Due to the loss of habitat, the wild population of Chinese alligator will soon become extinct. The relevant departments intend to use artificially propagated individuals to implement the release project, but because there is no land, they have to wait for the extinction of the wild population of Chinese alligator. ;
Fourth, environmental pollution.
Since the beginning of this century, due to the extensive use of pesticides, rodenticides, chemical fertilizers, coal and petroleum, a large number of industrial "three wastes" and toxic substances have been produced, which have seriously polluted the atmosphere, soil and water, damaged the health of wild animals and reduced their reproductive ability. Many rivers and lakes are no longer suitable for the survival and reproduction of aquatic wild animals. Some wild animals with high niche are also affected to varying degrees because of the food chain. ;
Third, indiscriminate hunting.
Wild hunting is the direct cause of many endangered species. Turtles, snakes, eagles, Tibetan antelopes, ornamental birds and frogs are the most severely hunted animals at present.
The delicacy of turtle meat, snake meat and frog legs, the beautiful singing and gorgeous posture of wild birds, the living falcon and the international black market of Tibetan antelope velvet have all attracted the killing of these animals, resulting in a sharp decline in their wild resources, and many of them are in an endangered or extremely endangered state.
Fourth, environmental pollution.
Since the beginning of this century, due to the extensive use of pesticides, rodenticides, chemical fertilizers, coal and petroleum, a large number of industrial "three wastes" and toxic substances have been produced, which have seriously polluted the atmosphere, soil and water, damaged the health of wild animals and reduced their reproductive ability. Many rivers and lakes are no longer suitable for the survival and reproduction of aquatic wild animals. Some wild animals with high niche are also affected to varying degrees because of the food chain. ;
Verb (abbreviation for verb) natural disaster
Natural disasters are also one of the reasons that lead to endangered species. For example, from 65438 to 0998, the rare floods in the Yangtze River basin made many wild animals living in plain areas or hilly areas extinct. ;
Life on earth cannot live alone. Under certain environmental conditions, they are interrelated and live together. Biologists point out that in the natural state, the number of extinct species is basically balanced with the number of new species. With the increase of population and economic development, this balance has been destroyed. From 1600 to 1996, 164 species of birds disappeared in the world; From 187 1 to 1970, 43 species of mammals became extinct. Since there was life on the earth, there have been 2.5 billion kinds of animals and plants, of which nearly 65,438+0/2 have disappeared in the last three centuries. The destruction of species balance will worsen the living environment of human beings, and human beings themselves will suffer great disasters.
Now, on average, one wild animal is extinct in less than two years, and many animals are on the verge of extinction. In order to maintain the biodiversity of the earth and protect wildlife resources, all countries attach great importance to the protection of wildlife. 1959 China formulated regulations on the protection of giant pandas and golden monkeys, 1962 clearly stipulated the protection of 83 rare wild animals, and 1988 promulgated the wildlife protection law.
However, because some people still don't understand the importance of protecting wild animals, or for personal benefit, they are still hunting precious and rare animals, which really makes people feel sad.
We should understand from an early age that caring for wild animals is a virtue of human beings, and protecting wild animals is everyone's unshirkable responsibility.
Closing report:
Endangered animals are precious, irreplaceable and renewable natural resources, which play an important role in maintaining ecological balance, promoting economic development, meeting people's growing material and cultural needs, developing foreign relations and improving socialist spiritual civilization. ;
I. Maintaining ecological balance
Each species is an important member of the ecosystem, and through the relationship of food chain, species play the role of interdependence and mutual containment. Once a link in the food chain goes wrong, the balance of the whole ecosystem will be seriously affected. For example, due to the uncontrolled killing of snakes, the resources of snakes are exhausted, which leads to the rampant rodent damage in forests, grasslands and farmland in some areas. For another example, due to the extensive use of pesticides and fertilizers and the killing of live animals for pet trading, the number of insect-eating birds has dropped sharply, leading to large-scale occurrence of forest and crop pests such as Dendrolimus punctatus and locusts. Rodents and pests have caused great losses to agriculture, forestry and animal husbandry, and the cost of ecological imbalance is incalculable. ;
Two, to ensure the normal development of scientific research and education activities
Endangered animals are experimental materials for scientific research and play an important role in zoology, genetics, modern medicine, bionics and other disciplines. For example, tens of thousands of cynomolgus monkeys and macaques domesticated and bred in China are mostly used as experimental animals or used to produce vaccines to prevent and treat diseases. Scientific research institutes, universities, zoos and museums collect, display or exhibit endangered animal specimens, which play an important role in scientific research and teaching, publicity and education, and law enforcement activities. ;
Third, promote economic development and meet people's living needs.
Most endangered animals have high economic value or ornamental value. ;
(1) medicinal value. Traditional medicine in China is developed on the basis of research and utilization of wild animals and plants. Tiger bone, leopard bone, rhinoceros horn, musk, pangolin scales, Saiga antelope horn, bear bile powder, turtle shell, gecko, cobra venom and toad venom are indispensable and important raw materials of traditional Chinese medicine. From 65438 to 0993, in order to cooperate with the efforts of the international community to protect tigers and rhinos, our government banned the trade of rhinoceros horn and tiger bones, which also paid a high price, resulting in direct economic losses of 2.3 billion yuan. ;
(2) Edible and clothing value. Our ancestors lived by collecting or hunting wild animals and plants in the era of "eating animals and eating blood". Even today in the 20th century, many animals are still common raw materials for food or clothes in our lives. Such as venison, yellow mutton, mink, Yellow weasel skin, leopard cat skin, otter skin, Tibetan antelope velvet, bird's nest, flying dragon, crocodile meat, crocodile skin, ostrich meat, dried snake, snake skin and snake powder. As far as snakes are concerned, in 1997, about 9,000 tons of live snakes were used nationwide, valued at more than 400 million yuan.
(3) ornamental value. Endangered animals have high ornamental value. They are the trump cards for zoos, forest parks, nature reserves or scenic spots to attract tourists, the protagonists of circus performances, and the main targets for some families to cultivate and watch or many literati to recite poems and paint. Going abroad for exhibitions and co-researching a pair of giant pandas can raise at least 8 million yuan for the National Giant Panda Protection Fund every year. In addition, handicrafts carved with ivory and hippopotamus teeth and decorations made with peacock, ostrich feather, butterfly and argali skull also have high artistic ornamental value. ;
(4) Diplomatic value. Giant panda, golden monkey, Siberian tiger, Zhu Huan and other endemic animals in China are not only world-class endangered animals, but also rare animals that people all over the world love and are eager to visit. Giving or exhibiting these animals abroad can play a unique role in enhancing China's popularity, developing political and economic relations between countries, promoting cultural exchanges, enhancing folk friendship, publicizing China's achievements in the protection and management of endangered animals, conducting cooperative research on endangered animals, and raising funds for the protection of endangered animals.
(5) The value of leisure hunting. 1998, China approved the hunting and catching of 3 takin, 23 argali, 6 falcons, 4 white-lipped deer, 57 rock sheep, 32 Tibetan gazelles, 2 goats, and water deer 1 one, and * * * feeding165433.
(6) Potential development value. The value of species is only a tiny part of what human beings know at present. With the development of science and technology, the potential value of each species will be gradually discovered and recognized. But if the species is extinct before people know it, it is impossible to develop and utilize these values. Undoubtedly, this is a great regret for us human beings and a great loss for biodiversity protection. ;
It can be seen that we should not only protect endangered animals, but also develop endangered animal resources, and finally achieve the goal of sustainable utilization. To sum up, protecting endangered animals means sustainable utilization of endangered animals.
group
member
Learn from experience
Hao Lu: Although the research study was hurried and poorly prepared, the activity was successfully completed due to the joint efforts of all the staff, especially one of the students who took the trouble to find information for everyone. Through this research study, I realized more deeply that unity is power, and I also learned a lot.
Kong Xiaoyi: Animals have lived with us on the earth for so many years. They all play an important role on the earth and maintain the delicate balance of nature. Mankind's wanton transformation of the earth has seriously threatened all kinds of life on the earth. It is our bounden duty to dig our own graves and protect endangered animals.
Zhang: Through this research-based learning activity, I deeply realize that the relationship between man and nature is becoming uncoordinated. You know, life is equal, and we are a whole with nature. If the ecological balance is destroyed, then mankind will eventually destroy itself. Therefore, we should save those endangered animals and take care of the animals around us. To love them is to love ourselves.
Geng: We actively explore and experience in an open situation, learn independently in a happy mood and improve our ability. We constantly gain, get exercise and improve ourselves in research-based learning.
Zhang Dongyu: Through this study, I have deepened my understanding of endangered animals. In this study, I learned more deeply that animals are the same as us. We all live in the big family of the global village. We should live in harmony, do our jobs well and protect our living environment.
Zhang Hefei: I don't think the benefits of research-based learning are one-sided. The most taboo in today's society is students with high scores and low abilities. Now is not the time when you can eat your fill just by technology. Society requires us to become all-round talents. I think this research has benefited me for life. He let me know my own shortcomings and made me realize the importance of all-round development. Thank the school for giving us this opportunity.
Instructor's evaluation opinion
In the research study, the students exercised their practical organizational ability, not only worked harder in their studies, but also gained a new understanding and understanding of animal protection. I hope that through this survey, students can make themselves aware of caring for animals, start from every little thing, and then love to protect our planet. Through research study, students have exercised their practical ability and enhanced their awareness of environmental protection.
Credit recognition
Gengrenjie
three
Teacher's signature
DongYu Zhang
three
Zhanghefei
three
Kong xiaoyi
three
Hao Lu
three
Zhang
three