The harm of destroying biodiversity, why protect biodiversity?

The significance of biodiversity conservation is that biodiversity is the foundation for the survival and development of human society. Many aspects of our clothing, food, shelter, transportation and material and cultural life are closely related to the maintenance of biodiversity.

1. Biodiversity provides us with food, fiber, wood, medicinal herbs and a variety of industrial raw materials.

2. Biodiversity also plays an important role in maintaining soil fertility, ensuring water quality, and regulating climate.

3. Biodiversity plays an important role in regulating atmospheric composition, earth surface temperature, redox potential and pH of surface sediments.

4. The maintenance of biodiversity will be beneficial to the conservation of some rare and endangered species.

Our food, production materials, freshwater resources, and even the human living environment are all important to biodiversity. To this day, many of the contributions of biodiversity to humanity are irreplaceable. For example, globally, 4 billion people rely mainly on natural medicines for their health care, and about 70% of the drugs used for ** cancer are natural medicines or synthetic from nature.

The important role of biodiversity for human beings can be summarized as "a gene can affect the rise and fall of a country, a species can affect the economic lifeline of a country, and a good ecosystem can improve the environment of a region". In nature, each species has its own special role and status.

Taking bees as an example, about 80% of the world's crops rely on bees and other insect vectors for pollination, especially oil crops, fruits and nuts, which are highly dependent on bee pollination. Bee pollination not only supports the survival and evolution of other species in nature, but also relies heavily on bees for the development of agriculture, which is vital to humans. Some scientists believe that if bees become extinct on Earth, so will humans.

There are many reasons for the destruction of biodiversity in China, and the main reasons are as follows.

First, the large population is the main cause of ecological and environmental damage. With the growth of China's population and economic development, the demand for natural resources is increasing. Deforestation, overgrazing.

Unreasonable reclamation of lakes, swamp reclamation, and excessive use of land and water resources have led to the destruction or even disappearance of the living environment of organisms, affecting the normal survival of species, and a considerable number of species have quietly become extinct without human beings noticing.

Second, environmental pollution has brought disaster to the survival of many organisms. A large amount of urban and rural industrial and agricultural sewage and air pollutants are discharged, especially the hazards of acid rain, heavy metals and the enrichment of long-term pesticide residues, so that many aquatic and terrestrial organisms and ecosystems are on the verge of extinction due to environmental degradation.

Third, indiscriminate hunting, domestic reselling and smuggling of wild animals are becoming increasingly serious.

Fourth, the construction of large-scale water conservancy projects destroys biodiversity The construction of large-scale water conservancy projects has caused the isolation of rivers and lakes, destroyed the habitats of aquatic organisms, blocked the migratory passages of some fish, and put some species in danger.

The harms of biodiversity reduction are, first, affecting food and industrial and agricultural resources, and then affecting the quality of human life, second, destroying and reducing soil fertility and water quality, third, affecting the ecological balance development of nature, and fourth, reducing medicinal materials**, and then affecting human health.

Biodiversity combustion refers to a stable ecological complex composed of a variety of organisms within a certain range, which is composed of genetic diversity, species diversity and diversity of ecological Pigipei system.

Biodiversity is affected by the rapid increase in human population, environmental pollution, ecosystem imbalance, invasion of alien species, etc., and the degree of biodiversity loss depends on the structure of the ecosystem or the degree of disturbance.

The significance of biodiversity to human beings is mainly reflected in its value, which is divided into direct value, indirect value and potential value, and the direct value or value refers to the fact that organisms provide food, fiber, materials, raw materials and other substances for human beings.

There are three main measures to protect biodiversity: (1) the establishment of nature reserves. The establishment of natural parks and nature reserves has become the main means for countries around the world to protect the natural ecology and wildlife from extinction and to allow the species to thrive.

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, the natural populations of some wild animals are bound to become extinct in the future.

To this end, it is necessary from now on to set up farms for the protection and breeding of certain rare animals, and to carry out natural stocking in ear or designated areas. For example, the cultivation of fresh fish 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.