I believe that many people cannot give a definite answer to this question, because there are too many centers in China now, including cultural centers, political centers, etc., and what we are going to talk about today is the "geographic center".

Do you know where China’s center is? I believe that many people cannot give a definite answer to this question. is because there are too many centers in China today, including cultural centers, political centers, etc. What we are going to talk about today is "geographic centers" .

Geographical Center is a country's geographical "heart

There has always been a lot of controversy about China's geographical center . According to the results of national geographic measurement, geographic center is located in a village . So, where is this village? Why can it become a geographical center?

Do you know where this is?

China's " land origin "

First of all, it must be clear that due to China's long history, the territory has changed in history. The transformation is still relatively large, , so the geographical center we are talking about today is based on the territory of New China. Next, let’s take a look at where the geographical center of China is today.

As early as , after the founding of New China, people began to look for geographical centers, because its determination is the key to the future land benchmark setting, and it is also related to my country’s future economic planning and construction .

Geographic center can also be called the benchmark point of the earth

In this case, people think that using the Soviet Union’s earth origin for introductory testing and transmission The geographical center is with great errors, which will cause some bad chain reactions, so the National Bureau of Surveying, Mapping and Geographic Information has embarked on the road to finding the real "earth of the earth" .

Since the selection criteria for the land origin were determined in 1975, a special measurement team has started to search and select points. According to the requirements, the point of must be far away from the urban area and the foundation is stable.

The former surveyor and mapping personnel

After a long-term investigation, the detection team has successively conducted inspections on Wuhan, Guangyuan , Xi'an and other cities. l1 finally found a suitable location in Beiliu Village, Yongle Town, Jingyang County, Xi'an City, Shaanxi Province. After the relevant approval was approved, the geographical center of China was officially designated here. The specific location of can be expressed as 34°32′27.00″n north latitude and 108°55′25.00″n east longitude. And then invested in the construction of instrument tables, main buildings, etc., which became a typical "science popularization base".

Dimensional Origin Scenic Area

Speaking of this, many people should be very puzzled, why can an unknown small village turn into a geographical center point of China? Why can it become a geographical center?

We mentioned in the previous article that when choosing to deprecate the earth origin with the Soviet coordinate system as the reference, several basic requirements were listed to make this point more accurate and meet the needs. Under this requirement, many cities have been on the list, but after comprehensive analysis and consideration, they still chose centered on Xi'an.

Observation tower in the scenic spot of the main land

As for the location of Beiliu Village, Yongle Town, Jingyang County, it is not 100% accurate. can only say that it is the most in the selection of , but only . Furthermore, At that time, there happened to be a large platform in the village that is suitable for establishing related facilities. In this regard, it is more in line with expectations.

"Report on Selecting Points of the Earth of the People's Republic of China" describes it as follows: "In order to make the geodetic measurement results data evenly calculate in all aspects, the origin is best in the central part of mainland China."

The land origin building complex covers an area of ​​59,000 square meters

Let's take a look at the location of this village, which is 880 kilometers north of the border of China, 1750 kilometers south of the south, 1000 kilometers east, and 2930 kilometers west.

Theoretically speaking, does belong to the central of our country. And according to the experts' later research data, the super long baseline of more than 1,000 kilometers during the Western Han Dynasty period also passed through . This coincidence made them more convinced that it was "history" that chose it here.

Graphic Stone of the Earth Origin of the People's Republic of China

Of course, after the news that the Earth Origin was selected in this small village by national geographic measurement was spread, many people felt that it was still not scientific enough. So, what other geographic center options are there?

"geographic center" is controversial

The first one is Gansu . When you treat Lanzhou City, Gansu Province as the center, and then start drawing the circle with a limit of radius of 2,500 kilometers, you will find that this circle almost covers the entire mainland of China.

Since this center is obtained according to the method of drawing circles, is also called China's geometric center . Although it seems very reliable to determine the geographical center by drawing circles and then finding the center of the circle, many people think it is biased to use it as a geographical center.

Because China's territory is not limited to the mainland part, the circle method of completely ignores my country's ocean territory , so the center can at most be used as the mainland center, and it still needs to be improved if it wants to become China's geographical center.

The second is Chongqing . Compared with the demarcation method of Lanzhou, Chongqing looks even more outrageous. It turns out that when people consider the ocean, determines China's "four poles", in short, it is the endpoint in the three directions of southeast, west and north.

For example, the northernmost end is north of Mohe in Heilongjiang, and the southernmost end is Zengmu Ansha in Nansha Islands . After determining four points, the connection began. finally identified this "four-pole intersection" as China's geographical center . It is not difficult to see that this location happens to be in Chongqing.

There are much more opposing people than Lanzhou when it comes to treating Chongqing as a geographical center. After all, from the map alone, Chongqing doesn’t look like the center .

Chongqing

In addition to the above two cities, alternatives include Wuhan City, Hubei Province, Nanchong City, Sichuan Province, Luoyang City, Henan Province, etc. It is not difficult to see that under different conditions, there are big differences in the location of the geographical center.

Of course, no one doesn’t want to be a “center”. , because judging from the treatment enjoyed by the economic and political centers today, being able to become a center is definitely that can be favored by relevant policies.

"Center" often brings together a large number of high-quality resources

It is worth mentioning that although in the 1970s, this small village in Yongle Town, Jingyang County, Shaanxi Province became a geographical center, , but this does not mean that it is the eternal . Therefore, under the increasing accuracy of people's coordinate system, Jingyang County , the coordinate system called Xi'an 80, gradually declined . The coordinate system of

is also updated in real time. Since this small village was determined as the origin of the earth, more than 40 years have passed in a blink of an eye. During this period, the rapid development of satellite and other technologies, and has made the coordinate system face the necessary update and replacement . Compared with the previous method of determining the coordinate system through torque or ground conditions, "earth center coordinate system" is gradually becoming the mainstream.

So in 2008, my country launched a brand new earth coordinate system. is called the 2000 national earth coordinate system , abbreviated as CGCS2000. Compared with the Beijing coordinate system determined in 1954 and the Xi'an coordinate system in 1980, the national geodetic coordinate system has deviated from the category of two-dimensional indicators .

CGCS2000 definition diagram

So, what is the significance of this brand new coordinate system?

First of all, it is more scientific to . After all, we also said in the above article that this coordinate system is different from the traditional coordinate system. It is based on the center of the earth.

With stronger scientific nature, will bring new things to my country's research on aerospace, meteorology, earthquakes and other fields . A series of achievements in the past using the Xi'an coordinate system need to be verified by the new coordinate system and completed the update.

Earth-centered coordinate system diagram

Secondly, the new coordinate system can be connected with more high-tech . As we all know, the development of remote sensing technology in my country in recent years is still relatively good. However, using remote sensing technology on the original coordinate system actually causes many difficulties, because has very large errors.

in this case has a feeling of "a hero is useless", but when the coordinate system of 2000 countries appears, it changes. In the future, remote sensing technology will serve us better and will serve us well in detecting and analyzing geological disasters in some areas.

principle diagram of remote sensing technology

This is the earthquake that occurred in Luding, Sichuan, my country, with the help of new coordinate systems and remote sensing technology, earthquake relief work will be easier to carry out.

In addition to this, the new coordinate system has many benefits, so we will not discuss them one by one here. Some people may feel very sorry, because today I just learned through this article that , the origin of in China, is actually a small village. did not expect that in the blink of an eye, this geographical center will be replaced by .

The origin of the land is a monument in surveying and mapping in my country

In fact, this is a very normal thing, because with the development of science and technology, our cognition will definitely improve. Furthermore, even if the coordinate system in the past is deactivated, the origin of the land in the small village of will still be exhibited as a popular science venue, because it is actually an important evidence for China's scientific and technological development and step-by-step exploration.