Are invasive animals easier to control than invasive insects?

When alien species successfully invade the local environment, they can be controlled by various human intervention means, but the cost of controlling their spread is also quite expensive. In Britain, in order to control 12, the most dangerous alien invasive species, in 1989 ~ 1992, the photo-herbicide cost 344 million dollars, while in the United States, it costs 3 million dollars to control the propagation and diffusion of Eichhornia crassipes every year. Similarly, the annual cost of salvaging water hyacinth in China is as high as $5 ~ 65,438.

The control methods of biological invasion mainly include manual control, mechanical removal, substitution control and biological control.

1. Artificial control

Catch exotic pests or pull out exotic plants by manpower. Artificial control is suitable for those invasive species that have just been introduced and settled, but have not spread widely.

2. Mechanical removal

Use specially designed and manufactured machines and equipment to control harmful plants. The mechanical control of harmful plants is safe to the environment, and it can also kill exotic plants in a certain range quickly in a short time. Exotic pests can also be controlled by various physical means, such as controlling harmful plants with fire, trapping harmful insects with black light and so on.

3. Select control

Substitution control is mainly aimed at exotic plants and is an ecological control method. Its core is to replace alien invasive plants with local plants with economic or ecological value according to the law of plant community succession.

4. Biological control

Biological control refers to the introduction of predatory natural enemies from the origin of exotic pests, which controls the population density of pests below the level of ecological and economic harm, similar to the self-regulation of ecosystems.

Today, Bian Xiao of Baibai Safety Net gives a brief introduction on whether biological invasion can be controlled. If you still want to know how terrible the biological invasion is, please continue to pay attention to our website and hope that today's content can help you.