How are the numbers of endangered animals counted? Is the quantity accurate?

Since it is an endangered species.

There are also countless in a limited time. It is not clear whether it depends on the seeds. Medium- and large-sized mammals on land.

Generally, there are several methods, the most direct is the counting method, 1+1, which is what it looks like; Instead of directly using the spline method, assuming that the species are randomly distributed, pull several splines and calculate the probability of possible species distribution based on the observation distance. Simple mathematical calculations, the most unreliable for the individual. Because the assumptions of this distance model are too strange, but it's better than no other way.

In recent years, feces are collected and individuals are identified by DNA, as long as the samples are large enough and countless, but the cost is slightly higher and has nothing to do with time and manpower; The most reliable method is to use several investigation methods at the same time, continuously present evidence and analysis, and establish regular monitoring methods. to wildlife.

The best environment is when people are not there, and the impact of human activities is also the number one reason why wildlife is at risk. In addition, due to natural disasters.

and extreme climates, where many wild animals are in danger due to mass deaths or inability to reproduce.

With the increase of China's population and the expansion of the scope of human activities, many areas belonging to the living space of wild animals have been destroyed, resulting in the deterioration of the ecological environment. At the same time, due to the fact that China has not paid attention to the revision of good forestry development for a long time, there are different degrees of indiscriminate logging in many places. Forests are a necessary environment for the survival of wild animals.

However, excessive deforestation not only destroys the living environment of wild animals, but also causes desertification and soil erosion, and it is difficult to restore to the state before the destruction.

At the same time, some grasslands and wetlands in China have the problem of overgrazing, which degrades grasslands, reduces wetland area and biodiversity.

It was also badly damaged. Some wild animals are very sensitive to human activities, such as the peacock, the traditional habitat of Yunnan's "sacred elf", which is gradually losing its reproductive ability due to human exploitation and hydropower station construction, and this species is on the verge of extinction. Siberian tigers in our country.

Due to deforestation, panic of human activities, illegal hunting problems, in the northeast region.

It is almost extinct.

I believe that the number of endangered protected animals is generally based on the number of data obtained by conducting a large-scale search according to the environment in which the animal has lived for a long time; I don't think this data is very accurate either, because the animals may be distributed anywhere that we haven't found.

According to the statistics of the number of discoveries and the living area, it has a certain reference. However, it is not necessarily accurate.

It can be calculated using notation, and the quantities are of course inaccurate, but the quantities can be roughly estimated.

Yes, there are also endangered animals that are world-class protected animals.