Doomsday Bunker Upgrade Chapter 64: Hypoxia

In the garage of the city police station, Qin Lan and other special police officers are sorting out equipment. They have a field mission today to go to the railway station to receive a batch of equipment that has arrived in the city by rail.

　　 "Tou Li, what equipment are we going to receive today?" When Qin Lan checked the gun in his hand, the teammate next to him curiously asked the leader of the team, "I usually receive supplies, no Are they all from the city government? Why do you want our SWAT team to receive equipment today?"

　　"You didn’t listen carefully when Team D and the political commissar gave a briefing? Didn’t you say it, it’s a batch of important materials that are vital to the evacuation shelter, so this time it is an armed escort, and we need our special police team to receive it. "The leader known as Li Tou is also in field equipment, checking ammunition while answering questions from his subordinates.

　　I only heard Li Tou’s answer, but Qin Lan had some questions. She asked Li Tou: "Li Tou, shouldn’t things like **** and guarding go to the armed police? How did we get our special police to go?"

In the Yan Kingdom, the armed forces controlled by the state are divided into three parts: the army, the police and the armed police.

　　The army is responsible for external warfare and safeguarding national territorial sovereignty, while the police is responsible for internally safeguarding public order and fighting crimes, while the armed police is between the police and the army. Responsible is the local security and handling of emergencies.

According to the function, the matter of escorting important materials should really be the work of the armed police.

Li Tou himself has some doubts about this issue, but now that the task has been assigned, it is impossible for them to say that they will go to the task after they figure it out.

So Li Tou could only say to Qin Lan, "Maybe the city government is doing something wrong. Now it's different from before. I'm afraid some things are not according to the rules."

　　 Li Tou’s words made Qin Lan not know what to say. She just wanted to ask why this time it was not an armed police **** but was replaced by their special police, but what Li Tou said caused some people in the city government to think carefully. , This inevitably made Qin Lan feel helpless.

Although the country is still there and government agencies are still functioning normally, the end times are the end times. Although many things look the same as before, they are actually different.

　　 Li Tou may also feel that what he said is a bit inappropriate, so he patted Qin Lan on the shoulder, and said to her: "Don't think so much, maybe it's just that the armed police can't get manpower? It's not like this before. Such things. Do the task first, and think about it when you come back.”

Hearing what Li Tou said, Qin Lan also suppressed the messy thoughts in his mind and focused on the task.

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The disaster caused by the meteorite impact destroyed the original human civilization. Although there are many survivors now, these humans have only survived.

　　 For these survivors, the most important thing is to survive. As for the reconstruction of human civilization, although the country is undergoing post-disaster reconstruction, the progress is very slow. It is still a very long thing to truly rebuild human civilization. .

This apocalyptic natural disaster has brought darkness and cold, although on the surface everything seems to be okay now, it seems that it will not be long before people will be able to leave the shelter and start post-disaster reconstruction.

But in fact, the real test of the meteorite impact has yet to come.

Anyone who has studied biology in junior high school knows that all things depend on the sun to grow. Without sunlight, most of the life on earth would not be able to survive.

Now, the dust from the meteorite has obscured the sky and lost sunlight, not only the drop in temperature, but also the complete ecology that could have been gradually restored.

　　 The previous global fire has burned more than 90% of the vegetation on the earth, and a large amount of carbon dioxide has been discharged into the air. This has maintained the temperature drop in a short period of time, but without sunlight, the temperature will still be very fast Cool down.

　　 Many people may have no idea about this, but just think about the four seasons on the earth just because the direct sun point changes can cause temperature fluctuations of tens of degrees, and you can understand that the loss of sunlight means to the earth. what.

And there is a more critical problem here, that is, without light, photosynthesis cannot proceed. Without photosynthesis, carbon dioxide in the air will not be converted into oxygen.

Oxygen is a very critical existence for life. The bigger the life, the more dependent it is on oxygen. Only some anaerobic bacteria can survive on the earth without oxygen. Other organisms, whether they are plants or Animals all need oxygen to sustain life.

A fire burns not only the forest vegetation that can convert carbon dioxide into oxygen, but also consumes a considerable part of the oxygen and emits a large amount of carbon dioxide.

　　Although marine ecology still exists, marine plants such as seaweeds can still convert some carbon dioxide, but without sunlight, even seaweeds cannot perform photosynthesis, and soon the ocean will be one step ahead of the land into a crisis of hypoxia~IndoMTL.com ~Without oxygen, the fish in the ocean will die in large numbers, and the marine ecology will collapse.

As for land, the previous global fires have wiped out a considerable part of terrestrial life and burned most of the plants, and the terrestrial ecology has collapsed at that time.

After the double collapse of the marine and terrestrial ecosystems, the oxygen cycle in the atmosphere will cease to exist, and the oxygen content in the atmosphere will be further reduced.

Under normal circumstances, the oxygen content in the atmosphere is 20.9%, and when the oxygen content is lower than 18%, the human body will begin to experience hypoxia.

It's like altitude sickness. At first, the breathing may be a little faster, the heart rate and blood pressure will rise, and it is easy to feel tired. People who are stronger may not even feel at all.

But with the further reduction of oxygen content, there will be obvious fatigue, attention will begin to decline, thinking will become confused, and even lose consciousness and fall into a coma.

If the oxygen content continues to decrease, the human body will experience symptoms such as headache, tinnitus, vertigo, nausea, vomiting, and even death.

Originally, there were a large number of plants on the earth for photosynthesis, and the oxygen content in the atmosphere was maintained at a relatively stable level.

But now that the ecosystem has collapsed, it is impossible for the ecosystem to self-regulate to restore the oxygen level in the atmosphere before the sun shines on the earth again.

　　 Fortunately, before the disaster, mankind had three months of preparation time. Although the main energy of governments during that time was on how to prevent the meteorite from falling, it does not mean that countries did not do it. A good plan for how to deal with disasters.