Doomsday Bunker Upgrade

In terms of ecological system research, Chen Xin can't help much. After all, this is not his area of ​​expertise.

However, he is good at biological cultivation.

After all, when cultivating large hardy wolfhounds before, the entire project was personally hosted by Chen Xin. The cultivation process was also involved in the whole process, even including the training and actual use after the individual was cultivated. Chen Xin participated in the training and can be regarded as rich in experience.

It's just that the animals needed to build an ecosystem are not large animals, or the demand for large animals is not that great.

In the naturally formed ecosystem and food chain, large animals usually live at the top of the food chain, which is the last link in the closed loop of the entire ecosystem.

This is the niche of the wolf in the cycle where the rabbit eats grass, the wolf eats the rabbit, and the wolf dies in the rotten ground, and then grows grass.

This niche is necessary in the natural cycle, because if the rabbit has no natural enemies, it will reproduce unrestrictedly, eventually breaking the limit that the environment can withstand, leading to the collapse of the entire ecosystem.

The Kangaroo Country once had a deep understanding of this, and they were still troubled by it even before the disaster.

The kangaroo country in those days unscrupulously slaughtered the native thylacines and other top creatures of the food chain. As a result, the local rabbits, kangaroos and other creatures lost their natural enemies. The industry was hit hard, and the kangaroos were flooded.

At that time, the kangaroo country also tried to make some efforts, such as banning the hunting of thylacines and offering bounty for rabbits and kangaroos, but the results were very small in the end, and it even needed the country to introduce wolves from abroad to curb the reproduction of rabbits.

The reason is that they killed all the creatures at the top of the niche, causing the entire biological chain to lose balance.

But if it is placed in a small ecological environment such as a dome city, the existence of such large predators does not seem to be much necessary.

It is easy to understand that such a small ecological environment has limited carrying capacity and cannot maintain the survival needs of large predators.

This is why the old saying goes that there is no room for two tigers in one mountain. Large predators in the wild will have their own territories, and the purpose of expelling other large predators from the territories is to ensure that they can get enough food.

However, a small ecological environment such as a dome city is still inseparable from carrying some herbivorous or omnivorous animals. Large predators such as wolves and tigers are really unnecessary, and they may also threaten the safety of urban residents. .

As for smaller predators such as cats and dogs, they are also not suitable for Dome City, but the reason for their inappropriateness is breeding problems.

Those who have a little understanding of the ecosystem will know that in the ecological niche, the more organisms at the top of the food chain, the scarcer the number and the more difficult it is to reproduce.

The top predators, such as tigers and lions, can produce three to four cubs in one litter, which is already a very productive number. Usually there are only one or two, and they reproduce once a year. The population is very large. Difficult to expand.

As for small and medium-sized predators like cats and dogs, the relative reproductive capacity is stronger. Three or four births are common.

If it is a smaller animal, their reproduction number will be greater. A small creature like a mouse with more than a dozen babies per litter is not enough for small creatures.

The smaller the size, the more you can only rely on quantity to ensure the continuation of the population.

This is not the restriction of the rules of the world, but the inevitability of biological evolution and ecological evolution.

And the most important thing is that if the dome city wants to maintain the self-sustainment, operation and balance of the ecosystem, it needs more of those tiny creatures that we don’t see at all, such as earthworms, rather than cats, dogs, and cats. They are all big guys.

"Then what if you want to raise cats and dogs?" At lunchtime, listening to Chen Xin talking about these issues, Mo Qingyan asked Chen Xin with great concern.

In fact, she has always wanted to raise a cat, a cute little kitten, which is completely different from Qin Lan, who wants to raise a dog and train to become a police dog.

"It depends on how you want to raise it. If you keep it at home as a pet, it is not a big problem. Just make sure that cats and dogs have enough food, neuter them, and don’t let them run around, just like before. Pets are almost the same and will not cause too much burden to the ecology." Chen Xin really seriously considered this issue. Cats and dogs are one of the most intimate animals with humans, and there must be many people who want to keep cats and dogs.

When disaster strikes, it is already very difficult to protect people’s survival. Pets such as cats and dogs are not considered at all. Therefore, in addition to the possibility of keeping some pets or animals in private shelters, the official shelters are No one brought pets in.

Now that the situation is getting better and the supply of supplies is guaranteed, there will definitely be people like Mo Qingyan who want to keep pets to accompany her.

This is not a big deal in Chen Xin's view. Although some people will say that everyone can't eat enough to feed their pets, but in Chen Xin's view, as long as people who want to keep pets are willing to pay more It’s not something that can’t be done, and the remuneration obtained can afford the consumption of raising a pet.

But after hearing his answer, UU Reading www.uukanshu.com Mo Qingyan had some more ideas, so she asked him: "Then if the pet runs out and becomes a stray cat and dog, it will how is it?"

"If this is the case, you can only kill." Chen Xin's words revealed a trace of cruelty, but he patiently explained: "The damage to the ecology by stray cats and dogs is very serious. Dogs are a little better, nothing special. Strong desire to hunt.

But in the case of cats, they are an animal full of hunting impulse in their bones. They are also rare animals in the animal kingdom that hunt for fun. Even if a cat is neutered, it will not reproduce its offspring. It poses a great threat to the local ecology.

Therefore, if stray animals like cats and dogs appear in the wild in the dome city, they can only be killed. After all, the ecology of the dome city is much more fragile than the natural ecology in the original urban environment. Once destroyed, it may bring about The collapse of the entire ecological environment. "

"Well, I can understand that the stray cats and dogs themselves are a very harmful problem." Mo Qingyan showed an understanding attitude towards Chen Xin's attitude on this issue, but her emotions were obviously still the same. It seems a little depressed.

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