How many people can the earth put down at most, and how many people can the earth withstand?

Ecologists point out that humans mainly live by eating plants, and although they also eat meat, the animals that are eaten survive by eating plants, so humans are actually eating plants indirectly. A person needs 2,200 kcal of energy from plants every day to survive properly, and it is estimated that the earth can feed 800 billion people.

However, experts also pointed out that it is not possible for all plants on the earth to be turned into food for human use, and many plants cannot be used at all, while others have to feed other animals, and the remaining part of the energy that can be enjoyed by humans actually accounts for only 1 of the total plant production. Therefore, the maximum number of people on the planet is not 800 billion, but only 8 billion.

In a recent report by the United Nations, the world's population reached about 10.2 billion by the end of the twenty-first century.

Therefore, family planning and eugenics are important matters for mankind. China regards family planning as a basic national policy and has been commended by the United Nations.

The latest research by human social scientists estimates that the earth's population will reach 100 billion after 10,000 years, and the earth can accommodate up to 200 billion people.

According to the textbook answer: pessimists believe that the current population has exceeded the carrying capacity of the planet; Optimists believe that the carrying capacity of the earth is unlimited; Most people think the ideal capacity is 11 billion.

If it weren't for the overcrowding and lack of resources, the maximum number of people could be 10 times the current one.

In terms of food resources, it is about 10 billion yuan.

Dude, blow it, 10000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000

Let go", you should be able to put down a lot. The key is to feed, and to feed with quality.

The answer in Lou Shanghai is more classic.

Put it in space.

The Dutch self-taught natural scientist Anthony van Liwengoek, known as the world's first micrographer, but few people know it, asked the question in 1679: How many people can the earth withstand? To put it in today's scientific language, the question is, how much is the ecological capacity of the Earth for humans?

Liwengouk asked this question because he thought about the population density of his country, the Netherlands. He believes that in the high.

In a dense environment, life becomes very difficult. He estimated the population of the Netherlands at about 1 million using the statistical methods of the time, with a population density of 116 people per square kilometer, and there was no concept of kilometers at that time. Next, he analyzed it like this:

The territory of the Netherlands is 11,400 of the total habitable area on Earth, and according to the population density of the Netherlands, the Earth can accommodate up to 13.4 billion people.

Actually, it's much more complicated than Liwengouk thinks. At present, more than 1 3 of the world's population live in much more crowded conditions than in the Netherlands at that time. It is the Netherlands itself, which, according to the United Nations, reaches 375 people per square kilometer.

Monaco is the largest in the world: 10,000 people per square kilometre.

The budget of scientists is 8 billion, which is already the limit!

Infinite with the development of technology.