Joke Collection Website - Cold jokes - Examples of human destruction of the ecological environment

Examples of human destruction of the ecological environment

1, over-exploitation of rare animals and plants

Driven by economic interests, many areas ignore the virtuous circle of ecology and overload capacity, blindly or even rudely dig and hunt, and unreasonable development and utilization methods and intensity have caused irreversible effects on many animal and plant resources. ?

Wild ginseng is an obvious example. It is difficult to find patches of wild ginseng in China. Once many Chinese herbal medicines are proved to be effective in treating certain diseases, these original plants will be mined soon. The evolution of species is irreversible, that is to say, species cannot degenerate into the past species, and once they disappear, they cannot be regenerated.

Step 2 kill whales

According to the report of the International Whaling Association, about 26,000 whales are killed worldwide every year (3 whales per hour on average), of which 95% are from Russia and Japan.

For example, the blue whale has been the largest mammal in the world since ancient times. Half a century ago, it had as many as 300 thousand heads, and today there are only about 2,000 heads left. The rhinoceros in Africa is one of the rarest animals in the world. Because the price of rhinoceros horn has risen sharply, even more expensive than gold, and the killing of rhinoceros has intensified, the number of black rhinoceros has dropped by 90% and is on the verge of extinction.

3. Overgrazing

In the process of material circulation and energy conversion in the whole nature, forest plays an important role as the hub and core, with the widest distribution, the most complex components, the most complete structure and the highest biological productivity. After long-term interaction and adaptation, forests and environment not only promote their own growth and reproduction, but also have a far-reaching impact on the surrounding environment.

Forests can conserve water, maintain soil and water, prevent wind and fix sand, increase humidity, purify air and reduce noise, which is closely related to the survival and development of human beings and the stability of natural ecosystems.

4, excessive reclamation, lake reclamation.

With the rapid growth of population, food shortage has become an increasingly obvious problem. Therefore, humans destroy forests and grasslands on a large scale to cultivate farmland. However, unreasonable land reclamation and cultivation have caused large-scale soil erosion, desertification and sandstorms.

5. Unreasonable species introduction.

In the long process of evolution, through selection, elimination, competition and adaptation, organisms have formed an ecosystem that relies on and restricts their surrounding environment and other organisms. When a species in one ecosystem invades another ecosystem, the invader may either die or multiply rapidly in an environment without natural enemies, making the invaded ecosystem lose its stability and disintegrate.