Do you know what invasive species are available in our country?

Egyptian pond lice, whose scientific name is Egyptian bearded catfish, was introduced from Egypt by China in 1981 and has been out of control since then. Due to its omnivorous species and extremely fast growth rate, it soon spread to all streams in Guangdong. At present, there is a large-scale captivity.

Fushou snail bar, the appearance is very similar to the snail, the individual is larger, the adaptability is strong, the reproduction rate block, in 1981 was introduced to China after the field began to grow wildly, there are certain safety hazards, improper consumption will also be infected with a variety of diseases.

The American white moth, discovered in Tianjin in 1995, mainly damages deciduous broad-leaved tree species, including many economic forests, fruit trees, street trees and ornamental trees.

Tribulus terrestris, a specimen was collected in 1934 in Lanyu, Taiwan. It is distributed in Fujian, Taiwan, Guangdong, Hong Kong, Guangxi and southern Yunnan. It is a serious weed in fields and orchards of peanuts, sweet potatoes and other crops, and reduces biodiversity after invasion; It can also be a pestable weed in tropical pastures.

Red fire ants, native to South America, were found in Taoyuan, Taiwan in October 2003 and Wuchuan, Guangdong in September 2004. It is distributed in Taiwan, Guangdong, Hong Kong, Macao, Guangxi, Fujian, and Hunan, and is a globally invasive species.

The African snail is one of the first 16 invasive alien species in China, which has a certain harm to agriculture, and carries a variety of bacteria, viruses and parasites, and no one will eat it in China.

Hollow lotus grass, native to South America, appeared on the islands near Shanghai in 1892, and was popularized and cultivated as pig feed in the 1950s, distributed in the south of the Yellow River Basin and Tianjin. Globally invasive species.

Zebra mussels, a species of shellfish native to the Black Sea region. In the southern part of China, it is known as "mussel" and has a certain economic edible value.

The crayfish we often eat, a creature that originally lived in Mexico and the United States, was introduced to China in the 30s of the last century, and has since grown wildly all over the field trails. Now it has been brought to the table and become a delicacy.

Crayfish, the most successful invasive species, has been eating for decades.

There is a bug that invaded from the Soviet Union. I don't know its name, this bug specializes in harming elm trees. This insect has no natural predators, and birds don't eat it, not even its dead corpse, and ants don't eat it.

Fushou snails, Brazilian turtles, scavengers.

We have learned about biological invasion in middle school, and I believe that many people have also seen the harm and impact of biological invasion, and any country and region should maintain absolute vigilance against biological invasion, because the serious consequence of biological invasion is the destruction of the local ecosystem, resulting in ecological imbalance, which has a great impact on local agriculture, animal husbandry and the natural environment, and may even cause irreparable consequences. <>

In China, nearly 660 invasive alien species have been discovered, of which more than 70 species have or have potential threats to the ecological environment of China. <>

So, how did these alien species invade our country's territory, which requires a detailed investigation by professional scientific researchers.

At present, the main invasion pathways of alien species mainly include:1Naturally Spread 2Artificially carried

Often many species invasion is because of the thought of factors, the carp that is flooded in some parts of the United States, and the water hyacinth that covered many rivers in China in previous years, the hare in Australia, etc., are all caused by human reasons, some are purposeful, but most of them are unconscious, and some alien species are inadvertently carried into China by people from different countries and regions, which often happens in the transportation of goods across borders. <>

Now some professional scholars say that some of the more tiny creatures will adhere to the soles of people's shoes and spread to different areas with the movement of people, which is also a way and way for alien species to invade.

Almost all national flights are forbidden to carry plants and animals, because this is very likely to lead to biological invasions, and various countries are also very concerned about such things, so it can be said that in this regard, any country and region is very strict.

Most of them are brought back to China by people who travel abroad and don't know they are invasive species, so they enter China.

The whole world is in an ecosphere, but China has its own unique ecosphere, and these invasive alien species enter our biosphere through nature, and have a huge impact on our country.

These species were introduced into our country, and this phenomenon of biological invasion is a very common phenomenon, and many things around us are actually invasive alien species, such as water hyacinth is an invasive alien species.

I think some of them are natural migrations, some are human interventions, some are brought by people from other places to see, and there are many ways to invade.

Some of these invasive alien species were introduced into the country because of a certain need, and then they were introduced into the wild for various reasons. And some of them have become invasive species as imported goods enter the country.

I believe that many people who travel are not necessarily for the local natural customs, but a large part of them are for the food in other places. With the increase in the frequency of Chinese travel, the reputation of "Chinese foodies" has gradually spread abroad.

Purple-stemmed Zeland, North American goldenrod, rice grass.

du, poisonous weed, phoenix eye lotus (also.

DAO is called water hyacinth), ragweed,

Baijiu version of the grass genus, Huoxiang thistle right, Heterocormia spp., psyllium, amaranth, cactus, spiny flower lotus seed grass, drought-loving lotus seed grass (commonly known as water peanut), nepeta, pine wood nematode.

This is just plants, but animals and other species.

From our country's point of view, now the state attaches great importance to this matter, and several of our departments are doing work in this area, and the invasive alien species that have been identified are 288 species, and the general classification is as follows: plants, 188 species. There are 19 species of microorganisms, 58 species of invertebrates, 3 species of amphibians and reptiles, 10 species of fish, and 10 species of mammals.

There are coconut leaf beetles, red fire ants, Brazilian tortoises, Canadian 'one branch flower', crayfish, etc.

Although the State Environmental Protection Administration (SEPA) has published the first batch of 16 invasive alien species [7], the actual number of invasive animals and plants is far more than that. According to preliminary statistics, there are at least 300 species of invasive alien species, 40 species of invasive animals and 11 species of invasive microorganisms known to China. Among them, 8 invasive plants such as water hyacinth, water peanut, eupatorium, rice grass and Mikania have brought serious harm to agriculture and forestry, and 14 species of pests with the most serious damage have brought serious harm to agriculture and forestry, including American white moth, pine wood nematode, potato beetle, etc.

The 16 harmful alien species announced by the State Environmental Protection Administration are: Eupatorium purpurea, Mikania, hollow lotus grass, ragweed, poison weed, Spartina alterniflora, Airplane grass, water hyacinth (water hyacinth), false sorghum, cane moth, wetland pine mealybug, powerful beetle, American white moth, African giant snail, Fushou snail, and bullfrog.