More than 600 species of alien organisms have been found in the country, through which channels did

With the increasing frequency of exchanges between countries and regions, alien species are spreading all over the world. The number of invasive alien species in China is on the rise. More than 660 species of invasive alien species have been discovered in China, making it the most seriously invasive country in the world.

In order to satisfy their curiosity, pet lovers have started to keep alternative pets such as spiders, ants, Brazilian turtles, piranhas, etc. Some alien species often avoid visitors, disrupt the ecological balance, and even threaten the personal safety of the public. The so-called invasion of alien organisms refers to the phenomenon of introducing a certain organism into our country through the intentional or unintentional activities of human beings, forming self-regeneration ability in the local natural or man-made ecosystem, causing obvious damage or impact on the local ecosystem or destructuring the ground.

China has made a lot of efforts in terms of ecology and environment. When the desert becomes an oasis and the land becomes fertile, other ecological problems reappear.

More than half are plants, a third are animals, and the rest are fungi and microorganisms. More than half of these invasive alien species come from the United States, including Brazilian tortoises, puffer fish, bullfrogs, etc., which have existed in China for a long time. Alien species are more likely to invade through a variety of pathways, including natural, unintentional and intentional introductions.

In some areas, even the most harmful, large, aggressive fish are thrown into freshwater lakes due to poor regulation. With no threat from natural predators, these alien species are rapidly and indiscriminately multiplied, seriously threatening the reproduction of native aquatic species.

When alien organisms enter a new ecosystem, even with good intentions, they can sometimes wreak havoc on the local ecology and even cause ecological disaster. Many people may not know that it may be illegal to bring or mail foreign animals and plants and their products into China, and the risk of infectious diseases is extremely high. Some species may become invasive pests, and once introduced and spread, the harm to China's agricultural and forestry production and ecological environment is immeasurable.

China has become the country with the most serious invasion of alien species in the world, with more than 100 species occurring in a large area every year, causing hundreds of billions of economic losses.

Imported aquaculture products inadvertently carry a lot of alien organisms, which appear in our country in this way, so the import and export of things should be strictly controlled.

In fact, there are many ways to enter, most of them are entered through some purchases, and fortunately, they have been inspected to avoid confusion of species.

These foreign objects were illegally brought into our country by lawbreakers, and these people are really hateful.

For thousands of years, a large number of alien species have entered China. Only alien species that may pose a risk are called invasive alien species, including plants, animals and pathogens, insects. In general, they refer to insects and plants, and they are very harmful.

Shaanxi Province, where the author is located, also has many invasive alien species, which are mainly described as follows. American white moth.

<> 1983, when I was studying in Yangling, Northwest Agricultural University (now Northwest A&F University) discovered the autumn networm, Yangling and Wugong County according to relevant information, in 1979 when the autumn networm was first discovered in Northeast China, it finally expanded at an alarming rate, and the worm was listed as one of the first invasive species in China, which belongs to the plant quarantine object, and has not been completely eliminated so far. The American white moth first appeared in various wood processing plants, logistics, train stations and timber storage areas in the new region. It can be found on vehicles, on the ground, and on surrounding trees.

The American white moth can be transmitted through wood, seedlings, food, fruits, packaging and transportation, mainly relying on long-distance transportation and logistics for long-distance transmission, and the phytosanitary pressure is very high, and all kinds of agricultural products in the epidemic area cannot be shipped abroad. The American white moth is an omnivorous pest that is native to the United States and Canada. It often feeds on a variety of broad-leaved trees, crops, and weeds.

In serious areas, forest resources were once destroyed, crop yields were reduced on a large scale, and a large number of white moths flew around, seriously affecting the normal production and life of local farmers. Army bugs. In the past three to five years, military insects have invaded Yunnan from Myanmar, and then spread northward from Yunnan, Sichuan, Guangdong and other places every year, causing serious harm.

The bug is also native to the United States and has invaded most countries in the world through various routes. One of its characteristics is that it cannot overwinter in temperate and cold regions. The annual spring and summer seasons can only migrate from the south to the north.

Fall armyworm, also known as marching bug, is densely covered with a large number of pests crossing the border, and without grass, the damage and locusts are not much. Fall armyworm on the grassland is an omnivorous pest, very harmful to gramineous crops, once differentiated, it may also cause harm to other crops, weeds and trees, due to its large population, can reproduce many times a year, the annual harm is very large, often spread far through the air current, can fly 300 kg a day, this reptile can only be eliminated and minimized by the national joint prevention mechanism.

Some species that are not native and come from somewhere else. The reproduction rate of these species is relatively fast, these species have no natural predators, these species will affect the local ecology, these species are very destructive, and these species have a very large impact on the environment. Yes, because most of the alien creatures have no natural predators, so they reproduce faster.

Not all native organisms belong to alien species, characterized by the new environment can not compete with it or restrict its life, the reproduction rate is fast, destructive, the invasion of alien organisms will seriously affect the local community structure, will destroy the local ecosystem.

It is not a native organism, this kind of creature does not have a local area, there are no natural enemies, it will reproduce rapidly, it will cause serious damage to the ecological environment, and most of the alien species will lead to biological invasion.

Organisms that do not grow natively are called alien species. These alien species are very different from native organisms and can lead to invasions of local organisms.

According to relevant data, China is one of the countries most seriously harmed by alien species, according to relevant data, more than 660 kinds of invasive alien species have been found in China, some species not only affect human life, but also cause great pollution and harm to the ecological environment and water environment. At this time, some netizens also asked, how did alien species invade the native area?

According to the invasion of alien species, most of them are invaded through the following two ways:

1. Natural invasion. The world's rivers and air itself belong to the shared state, if the area is close to China, in this case, it is likely that through the flow of air or water and the spread of insects and birds, plant seeds or animal larvae will be migrated, in this case it will also lead to the invasion of alien species.

2. Artificially introduced. Artificial introduction can generally be divided into two types: unintentional and intentional. Unintentional introduction, mainly due to the fact that some people go abroad to play, may carry some larvae or seeds of alien species on their bodies or shoes, and after stepping on the land area without knowing it, it is likely to lead to the invasion of alien species; However, there are two types of intentional introductions, the first is through private channels, and the second is through online platforms.

To put it simply, it is the act of buying and selling.

However, according to relevant data, in fact, China is more seriously infested by alien species, and more cases are caused by a kind of buying and selling. Because most people are in a curious mind, if they see something they have not seen or animals, they will be particularly curious and want to raise, but in the process of breeding, they will not understand the habits and characteristics of this animal, resulting in the final inability to raise, they will be discarded or released at will, resulting in corresponding harm.

Summary. There are two main ways for alien species to invade the territory in China, the first is natural invasion, and the second is artificial introduction. Overall, the probability of anthropogenic introduction is much greater than that of natural invasion.

Some alien species have invaded through land borders, and some have been brought in by tourists who have accidentally brought alien species through customs.

One is natural invasion and the other is man-made, both of which will attract alien species to invade the territory.

It will invade through natural factors, through imported grain and fruits, and through people's private trafficking.

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.

For the natural environment, although we humans are the most advanced organisms on the earth, but many organisms actually have a lot of situations that we can't imagine, especially the invasion of organisms, which can simply make a place directly collapse the ecological chain, which is not a joke, so people will also be confused that more than 660 species of invasive alien species have been found in the country, how harmful are alien species? This is indeed very significant, and let's analyze the natural disasters in a region, especially in detail.

1: The great harm of agriculture:

First of all, let's use an example to tell you, when it comes to lobsters, everyone must like to eat, and lobsters are usually very expensive, but we heard that a place in Guizhou actually catches lobsters for free, and even can catch 200 catties of lobsters in an hour, which makes us unbelievable, but the fact is that this is because this place in Guizhou has been invaded by lobsters, which is an alien species, the speed of reproduction is too fast, and there are no natural enemies, even the local people have no way, I can't finish eating.

2: Planting is also a big influence:

And we must know that for any agriculture, planting is very important, and the resources and environment of the soil are very critical, and the nutrition of the soil is limited, these alien species continue to expand, and there are no natural enemies, the growth of the number is unimaginable, so the objects of these nutrients are directly divided in large quantities, and these planted plants do not have enough nutrients at all, and naturally cannot survive.

So more than 660 invasive alien species really sound like a very scary thing, but the world is like this, even if we humans are the most advanced creatures on the earth, with a lot of scientific and technological fields, but these problems are also difficult to solve, the best way is to eat them, but there are some alien species that can't be eaten at all, lobster scavengers and the like are okay, and others are not.