How many square kilometers of urbanization was there in the world in 2018?

The land area is 9.6 million square kilometers, the coastline of the eastern and southern continents is more than 10,000 kilometers, and the water area of the inland sea and the border sea is about 4.7 million square kilometers. There are 7,600 large and small islands in the sea area, of which Taiwan Island is the largest, with an area of 35,798 square kilometers. The total land area of the People's Republic of China is 9.6 million square kilometers + 4.7 million square kilometers (approximately) = 14.1 million square kilometers Many friends will not hesitate:

9.6 million. From the point of view of national defense, this is incomplete and behind the times. According to international law, a national territory is a specific part of the earth's surface and its underground and airspace that is under the sovereign jurisdiction of a State, and consists of territorial land, territorial waters, airspace and subsoil.

Territory is the material basis of the State and the space in which the State exercises its supreme power. The total land area of China is 9.6 million square kilometers, accounting for about a quarter of the area of Asia and one-fifteenth of the world's land area. It is vast, second only to Russia and Canada.

The eastern end of China's land territory is at the confluence of the main channel of the Heilongjiang River and the Ussuri River, and the western end is at the Uzberi Pass in the Pamir Plateau, with a distance of 5,200 kilometers from east to west. It stretches from the dark sands of Zengmu in the Nansha Islands in the south to the center line of the main channel of the Heilongjiang River north of the Mohe River in the north, with a length of 5,500 kilometers from north to south. Territorial airspace is the airspace over the land and territorial waters of a sovereign state, and is an important part of the territory.

The state enjoys complete and exclusive sovereignty over its own airspace, which brooks no encroachment by other countries. However, States may grant foreign aircraft the right to enter and pass through their airspace under bilateral or multilateral treaties. Military aircraft are generally allowed to enter the airspace of other countries only with special permission.

The 1919 Paris Convention on Air Navigation Rules established the principle of a state's sovereignty over its territorial airspace, and it had the right to take corresponding measures against invading foreign aircraft, especially military aircraft, in accordance with the situation. Territorial sea refers to the sea area adjacent to the land territory and internal waters of a coastal state under the sovereign jurisdiction of it; Archipelagic countries extend to contiguous waters beyond archipelagic waters. The territorial sea includes the airspace above it, as well as the seabed and bottom layer.

Each country may determine the width of its own territorial sea in accordance with its own characteristics, development and security needs, while taking into account the interests of its neighbors and the convenience of international navigation. The width of the territorial sea currently varies from 3 nautical miles to 200 nautical miles, with most countries setting 12 nautical miles. On 4 September 1958, China declared that the width of its territorial sea was 12 nautical miles.

The delineation of the width of China's territorial sea adopts the straight baseline method, with the outer edge of the coast and the coastal islands as the base points, connected into a line, and the waters extending 12 nautical miles from the baseline are China's.

This area is 20,000 square kilometers, and I think this distance is still relatively long.

The general boy called the picture should have a lot of opinions in this life.,Found that this site should be urbanized.,The area is still relatively large.,It's also divided into gangs.。

The area of me and him is still very large, it should be in the hundreds of thousands of square kilometers.

In 2018, the world's urbanization area reached 790,000 square kilometers.

I feel that Beijing is the most populous city in the world.

Mexico City (the actual urban area has exceeded 2,000 square kilometers). Tokyo (claimed to be more than 2,000 square kilometers, higher than Mexico City, but the actual density excluding the outlying and nearby islands is slightly lower than Mexico City).

São Paulo (the city has a built-up area of more than 1,600 square kilometers). Loshy Rock (the city has a built-up area of more than 1,200 square kilometers, but the population density is much smaller than that of New York). Rio de Janeiro (city built area of more than 1,100 square kilometers). Moscow.

Wuhan (in fact, Wuhan is the first city in China to exceed 1,000 square kilometers). Beijing (the actual urban built-up area has exceeded 1,000 square kilometers).

New York (over 900 square kilometers in the urban area). Berlin (urban area of almost 900 km²).

Mexico City.

Sao Paulo, Tokyo.

Falling Rock Moscow.

Wuhan, Beijing. New York 1 Berlin.

The ranking of the world's cities by area is as follows (top 10):

1. Mexico City: The actual urban area has exceeded 2,000 square kilometers;

2. Tokyo: It is claimed to be more than 2,000 square kilometers, higher than Mexico City, but the actual density is slightly lower than that of Mexico City, excluding the periphery and nearby islands;

3. São Paulo: The built-up area of the city exceeds 1,600 square kilometers;

4. Luoshanji: The built-up area of the city is more than 1,200 square kilometers, but the population density is much smaller than that of New York;

5. Rio: the urban built-up area is more than 1,100 square kilometers;

6. Moscow: The built-up area of the city exceeds 1,000 square kilometers;

7. Wuhan: The built-up area of the city exceeds 1,000 square kilometers;

8. Beijing: The official announcement is more than 600 square kilometers, but in fact, the actual urban built-up area has exceeded 1,000 square kilometers;

9. New York: an area of more than 900 square kilometers in the urban area, some data say that it is 780, which is inaccurate;

10. Berlin: The actual city area is nearly 900 square kilometers;

1. Mexico City: The actual urban area has exceeded 2,000 square kilometers;

2. Tokyo: It is claimed to be more than 2,000 square kilometers, higher than Mexico City, but the actual density is slightly lower than that of Mexico City, excluding the periphery and nearby islands;

3. São Paulo: The city has a built-up area of more than 1,600 square kilometers;

4. Luoshanji: The built-up area of the city is more than 1,200 square kilometers, but the population density is much smaller than that of New York;

5. Rio: the urban built-up area is more than 1,100 square kilometers;

6. Moss Limb Department: The urban built-up area exceeds 1,000 square kilometers;

7. Wuhan: The built-up area of the city exceeds 1,000 square kilometers;

8. Beijing: The official announcement is more than 600 square kilometers, but in fact, the actual built-up area of the city has exceeded 1,000 square kilometers;

9. New York: an area of more than 900 square kilometers in the urban area, some data say that it is 780, which is inaccurate;

10. Berlin: The actual city area is nearly 900 square kilometers;

The national urban construction level is released: Shanghai first, Nanjing seventh, Hangzhou twelfth.