What is the provenance of Bio Invaders?

According to a report by Guangming** (June 12, 2000), a "plant killer" Mikania produced in Central and South America is spreading rapidly on Neilingding Island in the southwest sea of Shenzhen. They are like a huge net, black and oppressive on the beautiful lychee trees, banana trees, and acacia trees. Trees are dying silently because they can't get sunlight, flowers and green grass are withering because they can't breathe fresh air, and the land on the island is turning into a wasteland.

In China, a South American aquatic plant, water hyacinth, has greatly reduced the water area of Dianchi Lake in Kunming, and the local climate is obviously dry, and 38 of the 68 species of fish in the lake have ceased to exist.

In Western Europe, a North American shrimp disease is invading local shrimp, causing them to disappear in many rivers.

In the Mediterranean and Adriatic Seas, a Pacific seaweed covers 3,000 hectares of seabed.

From East Africa to the Indo-Pacific region, an alang grass found in South Asia has invaded millions of hectares of tropical forests, severely affecting the natural regeneration of local trees.

A pathogenic fungus in Australia, possibly from the Papua New Guinea region, has invaded since 1920, causing thousands of hectares of forest to be destroyed. The fungus is harmful to three-quarters of plants, including tall tree species and dwarf shrubs.

In New Zealand, a nocturnal kangaroo in Australia is estimated to eat 21 tonnes of local forests per night.

The brown tree snake in Papua New Guinea has made 11 species of birds and some lizards and bats extinct in the wild.

On February 21, 2002, the Daily News reported: The General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, the Ministry of Agriculture, and the State Forestry Administration jointly issued an announcement a few days ago, announcing the suspension of the import of pineapples, banana seedlings and other banana perforated nematode parasitic plants from the Philippines.

List of the first batch of invasive alien species.

1.Eupatorium purpurea 2Mikania.

3.Hollow lotus seed grass 4Ragweed.

5.Poison Weeds 6Spartina alterniflora.

7.Airplane Grass 8Hyacinth.

9.Fake Sorghum 10Cane moth.

11.Wetland pine mealybug 12Powerful beetle.

13.American White Moth 14African giant snail.

15.Fushou snail 16Bullfrog.

China National Geographic Magazine: Investigation of Alien Biological Invasion in China.

This is an expository essay on ecological issues. It explains to us what biological invasion is and the great harm it brings, prompting us to be highly vigilant about this particular ecological phenomenon. By studying this text, we can not only gain some ecological knowledge, but also develop our sense of responsibility to society.

In addition, this text is well-structured and hierarchical, using illustrative methods such as listing numbers, giving examples, and making analogies, which provides a reference for us to write expository essays.

Main content: This paper also talks about the great harm caused by biological invasions, the causes and ways of the increase in biological invasions, the different attitudes of the biological and ecological circles towards "biological invaders", and the corresponding measures taken by countries around the world to "biological invasions".