Conservation of biological diversity 20, conservation of biological diversity

Returning farmland to forests, refraining from indiscriminate logging, planting trees and grasses, establishing nature reserves, and prohibiting the killing of endangered animals.

Indiscriminate deforestation and deforestation have destroyed a large number of forests, seriously affecting the diversity of species.

The killing of endangered animals, animal extinction, affects not only species diversity, but also genetic diversity.

The blind occupation of forests also destroys the diversity of ecosystems.

1. Establish nature reserves.

2 reduce.

Genetic diversity, species diversity, ecosystem diversity.

Conservation of biodiversity is the implementation of conservation measures at the genetic, species, and ecosystem levels.

With the growth of the population and the development of the economy, there is an increasing demand for natural resources. Over-deforestation, grassland reclamation, overgrazing of grasslands, and the creation of lakes have all led to the destruction of wildlife habitats, thus putting biodiversity at risk.

The exploitation and utilization of predatory experiments. For example, indiscriminate hunting and indiscriminate logging have clearly threatened biodiversity.

Environmental pollution.

5) First, maintain the ecological balance and maintain the living environment of human beings; Second, the utilization value of many organisms still needs to be researched and exploited by human beings, and it is necessary to leave a broad space for future generations to choose survival.

There are just three in the book: genetic diversity, species diversity, and ecosystem diversity. Indiscriminate hunting and deforestation. The main thing is the destruction and occupation of biological habitats, as well as poaching and environmental pollution.

Question two. 1. The large-scale reduction of forest areas has destroyed the forest ecosystem, resulting in a decrease in air and ground humidity, and the reduction or death of many plants, especially shady plants; At the same time, due to the loss of habitat and food, some animal species have declined dramatically to the point of extinction.

2 Caused by the frenzied hunting of illegal armed poachers.

3 The discharge of domestic sewage into the water body greatly promotes the eutrophication of the water body, allowing algae plants and other plankton to multiply. When the remains of these organisms are decomposed, they consume a large amount of oxygen in the water and produce toxic substances, which leads to the mass death of fish and other aquatic organisms, and the species and abundance of fish and other aquatic organisms are drastically reduced.

4 The crazy growth of water hyacinth makes other aquatic plants and aquatic animals lose their living space and nutrients, resulting in a decrease in the variety and number of other aquatic plants and aquatic animals.

5 In addition to the above factors, there are air pollution, overfishing, overexploitation, the simplification of the species structure of agriculture, forestry, fishery and animal husbandry, industrialization and urban development, as well as imperfect laws and regulations and global climate change.

The significance of biodiversity conservation is mainly reflected in the value of biodiversity. Biodiversity is the foundation for the survival and development of human society.

In accordance with the Convention on Biological Diversity.

Biodiversity is defined as "variability in all living organisms, including terrestrial, marine and other aquatic ecosystems."

and the ecological complex it consists of; This includes diversity within species, between species, and ecosystems. ”

Biodiversity is the sum of organisms and the ecological complexes formed by them and the environment and the various ecological processes related to them, which are composed of three levels: genetic (genetic) diversity, species diversity and ecosystem diversity.

Genetic (genetic) diversity refers to the diversity of genetic factors and their combinations that determine traits in an organism.

Species diversity is the manifestation of biodiversity on species, and it is also the key to biodiversity, which not only reflects the complex relationship between organisms and the environment, but also reflects the richness of biological resources. Ecosystem diversity refers to the habitats and biomes within the biosphere.

and the diversity of ecological processes.

Biodiversity is the foundation of life on Earth. Its important socio-economic, ethical and cultural values are reflected in religion, art, literature, hobbies, and the understanding and support of all sectors of society for biodiversity conservation.

Their contribution to maintaining the climate, protecting water, soil and maintaining normal ecological processes is even greater for humanity as a whole. The significance of biodiversity is mainly reflected in its value. For humans, biodiversity has a direct use value.

Indirect and potential use value.

Direct Value:Organisms provide human beings with food, fiber, building and furniture materials, and other raw materials for life and production.

Indirect use value:Biodiversity has important ecological functions. In ecosystems, wildlife is interdependent and mutually restrictive, and they work together to maintain the structure and function of ecosystems.

It provides the basic conditions for human survival (e.g., food, water, and breathing air) and protects humans from natural disasters.

and suffering from disease (e.g., climate regulation, flooding, and pests and diseases). Once wildlife is reduced, the stability of ecosystems will be destroyed, and the living environment of human beings will also be affected.

Potential use value:There are many kinds of wild life, and only a few of them have been fully studied by humans, and the value of a large number of wild animals is still unclear. But to be sure, these wildlife creatures have huge potential use.

Once a wildlife has disappeared from the earth, it cannot regenerate, and its potential use value ceases to exist. Therefore, wildlife that is not yet clear of its potential use value should also be cherished and protected.

Biodiversity concept and meaning.

The significance of biodiversity conservation is to maintain the ecological balance of the earth, promote the harmonious coexistence of man and nature, and create a better tomorrow. In life, the food, fiber, wood and other raw materials needed by human beings come from nature, and once any species in nature is extinct, it is impossible to regenerate, which has an extremely negative impact on the sustainable development of human beings.

The significance of protecting biodiversity is:

The protection of biodiversity is an important part of maintaining the ecological balance of the earth and promoting the harmonious development of any nature, and the significance of biodiversity mainly depends on the value of biodiversity.

Protecting biodiversity, can provide us with essential food, fiber, wood and other industrial raw materials, most of our food is in nature, only to maintain biodiversity, our food will be more abundant, the quality of life will be greatly improved. Messy clearing.

Species extinction is extremely detrimental to human development

In today's natural world, any species is extinct, it will never be able to regenerate, now there are endangered species on our earth, once they disappear then people will forever lose these resources, and the protection of biodiversity is to protect these endangered species, this initiative is of great strategic significance for our future generations and subsequent scientific research.

1. Biodiversity is an important component in maintaining ecological balance and promoting the harmonious development of man and nature, and the protection of biodiversity is extremely beneficial to the human economy and future development.

2. Biodiversity includes the diversity of biological species, genes and ecosystems. The significance of biodiversity is mainly reflected in the value of biodiversity, for human beings, biodiversity has direct use value, indirect use value and potential use value, therefore, the protection of biodiversity is to protect human beings.

3. First of all, biodiversity provides us with food, fiber, wood, medicinal materials and a variety of industrial raw materials, and our food is all in nature, maintaining biodiversity, and our food varieties will continue to be enriched. The quality of life of the people will continue to improve, and they will change from a subsistence type to a well-off type.

4. Biodiversity also plays an important role in maintaining soil fertility, ensuring water quality and regulating the climate. The trees are lined with fragrant flowers, and all kinds of wild animals are everywhere. However, due to the long-term war and the excessive exploitation and utilization of human beings, it has become a very poor area of biodiversity, full of loess barren slopes, and when encountering windy weather, it is flying sand and rocks, and the phenomenon of desertification is very serious.

In recent years, through artificial tree planting and the "Three Norths" shelterbelt project, biodiversity has been restored to a certain extent, and the process of desertification has been inhibited.

3. The maintenance of biodiversity is conducive to the preservation of rare and endangered speciesWe all know that once any species is extinct, it will never be able to regenerate. Once the species that still live on our planet today, especially those that are on the verge of extinction, disappear, then humanity will lose these precious biological resources forever. The conservation of biodiversity, especially endangered species, is of great strategic significance for future generations and for the cause of science.

There are three main measures to protect biodiversity:

1. Establish nature reserves. The establishment of natural parks and nature reserves has become the main means for countries to protect natural ecology and wildlife from extinction and to reproduce. China's Shennongjia, Wolong and other nature reserves have played an important role in the protection and reproduction of rare and endangered species such as golden monkeys and pandas.

2) Establish rare animal farms. Due to the destruction of habitat and breeding conditions, some natural populations of wild animals are bound to become extinct in the future. For this reason, it is necessary from now on to establish farms for the protection and breeding of certain rare animals, or to designate areas for natural stocking.

For example, the cultivation of crocodiles in Thailand.

3) Establish a global gene bank. For example, in order to protect the cultivated varieties of crops and their extinct wild relatives, a global gene bank network should be established. Most gene banks now hold seeds for major crops such as cereals, potatoes and legumes.

Practice questions

The basic measures for the conservation of biodiversity are: and among them, are the main measures, which are complementary measures.

Answer:

To protect biological diversity, we have developed conservation strategies and different measures at the three levels of genetic material, species and ecological environment, including in situ conservation and ex situ conservation, as well as legal education and management. In-situ conservation refers to the establishment of nature reserves, which divide a certain area of land or water bodies including the protected objects for protection and management, which is the most effective measure to protect biodiversity. In addition to the establishment of nature reserves, people also move endangered species out of their original places and into zoos, aquariums and endangered animal breeding centers for special protection and management, which we call ex situ conservation, which is a supplementary measure of in-situ conservation.

So the answer is: in situ conservation; ex situ protection; legal education and management; in situ conservation; ex situ protection;

Categories: Education, Science, >> Science & Technology.

Analysis: Conservation of biodiversity is to adopt conservation strategies and measures at the three levels of ecosystems, species and genes. The main ones are:

1.In situ conservation, i.e. the establishment of nature reserves, 2Ex situ conservation, such as the establishment of germplasm banks for genetic resources, plant gene banks, and wildlife and botanical gardens and aquariums.

3.Develop the necessary regulations to combat and control activities that cause significant loss of biodiversity.

The protection of biodiversity is a common global event, and the most important thing is to take action, which requires extensive cooperation and positive action by all States parties, and the formulation of necessary laws and regulations to combat and control activities that cause major losses of biodiversity, and to effectively protect and rescue endangered species, seriously damaged ecosystems and genetic resources.