Chapter 870

Liu Helong then explained the reason for the failure of the Biosphere 2 experiment: "the Biosphere 2 experiment was originally carried out in a state of feeling the stones and crossing the river. Although scientists at that time had made a lot of research results in the study of the earth's biosphere, these achievements could not support such a complex experiment.

Biosphere 2 project is designed to conduct ecological and environmental research in a closed state to help people understand how the earth works, and whether human beings are suitable for survival under the conditions of simulating the ecological environment of the earth.

In order to be close to the natural environment as much as possible, the soil, turf, sea water and fresh water in the circle are taken from different geographical regions of the outside world, and are recycled through certain artificial treatment. For example, the sea water used in the experiment is made by mixing the seawater and fresh water in proper proportion.

Why did the experiment fail? Scientists have made a summary: in addition to more carbon dioxide, less oxygen, water cycle imbalance and other reasons, the imbalance of biological species relationship is also an important reason.

It turns out that although the designers have simulated a variety of ecosystems in biosphere II, the introduced organisms are mainly producers. The species and quantity of animals, fungi and bacteria are relatively small. The pollinating insects die, and some plants just blossom and fail to bear fruit.

Due to the reduction of the species and amount of animals, there are few plants. I'm afraid there is a wrong proportion. In the real biosphere, the atmosphere, water, plants, etc. corresponding to each person are so vast. What about No. 2? The proportion of environmental resources to human beings is seriously small. Even if there is only one person living in the atmosphere, water and plants, it is not enough, let alone a few people.

More carbon dioxide and less oxygen are the result rather than the cause. The reason for more carbon dioxide and less oxygen is that there are too few plants to convert and release so much carbon dioxide produced by human beings and plants themselves. The consumption rate of oxygen is higher than that of production, while the production of carbon dioxide is higher than consumption.

We all know that the earth we are living in is a huge biosphere system. It is very, very complicated. It is almost impossible to simulate it in a laboratory!

As the largest ecosystem on the earth, the structure and function of biosphere can maintain a relatively stable state for a long time, which is called the steady state of biosphere.

First of all, from the energy point of view, the continuous flow of solar energy is the power to maintain the normal operation of the biosphere. The conversion of solar energy into chemical energy that can be used by organisms is realized by photosynthesis of green plants. This is the energy basis of the biosphere.

Second, from the material point of view, the atmosphere, hydrosphere and lithosphere provide all kinds of necessary materials for the survival of organisms. The three pole structure formed by producers, consumers and decomposers in the biosphere connects the whole circuit from inorganic matter to organic matter, and then decomposes into inorganic matter for recycling through multi-level utilization of various organisms. The biosphere can be said to be a self-sufficient ecosystem, which is the material basis for the existence of the biosphere.

Third, biosphere has multi-level self-regulation ability. For example, when the content of carbon dioxide in the atmosphere increases, plants will strengthen photosynthesis and increase the absorption of carbon dioxide.

After an organism is extinct, other organisms that play the same role in the biosphere will take its place; when the number of a plant feeding animal increases, the number of plant population and natural enemy population will also change, so that the number of this animal population can be controlled.

Although the biosphere has the ability of self-sustaining homeostasis, this ability is limited. The impact of human activities on the biosphere has exceeded this limit in many aspects, posing a serious threat to the stability of the biosphere.

It is because of this threat that our company's interstellar migration program is so important. If we want to truly complete the colony, how to let human beings survive in the colony for a long time is the most important thing to consider.

So our experiment is so important, and because the environment outside the planet we want to colonize in the future is of course different, so our laboratory construction plan adopts a totally closed construction design.

If you look carefully at the outer layer of our laboratory, you can see the advantages of our design. All the systems in the whole laboratory are closed together.

Moreover, in order to better simulate a variety of complex alien environments, all of our laboratory construction adopts a double-layer construction design. In addition to shielding the influence of the external environment, a large number of environmental simulation equipment will be installed to simulate the impact of extreme cold and hot environment, cosmic ray impact, meteorite impact and so on on the ecosystem.

Inside the laboratory, we have integrated all the equipment of the whole ecosystem cycle, such as water circulation system, oxygen circulation system, animal and plant circulation system, lighting system and so on.

Of course, these equipment also need the support of various branches and laboratories, which is another reason why we took the plan to the company's regular meeting for discussion, instead of directly submitting it to the boss for approval. Without our full support, we could not have completed such a huge construction plan ourselves!

Such a closed-loop design almost does not need to consider the interference of external factors on the interior of the laboratory, so it can be built anywhere, and there is no need to go all the way to find what desert to build the laboratory.However, because the scale of our laboratory construction is really large enough, in order to save construction costs, we can also find an area with low land price to buy land. Anyway, the transportation is so convenient now, there is no problem where to do the experiment.

What's more, our company's artificial intelligence system and intelligent robot can help us better manage and maintain the laboratory, so we don't have to worry about it! "

After listening to his explanation, both Lei Tiantang and other people understood why their laboratory did not need to be built in the desert to avoid the influence of the external environment.

Indeed, even if the laboratory is built in the desert where the ecosystem is relatively simple, it is difficult to meet their experimental needs. After all, their experimental plan is not as simple as the Biosphere 2 experiment.

The purpose of their experiments is completely different. Biosphere 2 experiment is to simulate the earth's biosphere and see the performance of man-made biosphere in a small area. The content of the experiment is closer to the earth's environment. Even the most important sunlight is natural light. How can such a simple experiment meet the needs of the post colonial ecosystem construction of interstellar immigrants!

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