Wu Hao, on the other hand, continued with a smile: "In order to prevent the filtration capacity of the sand used for filtering and infiltration from weakening over time, we regularly close the gates on both sides and replace the sand.
These sands are very rich in chemicals. We will filter, recycle, and then dispose them harmlessly to avoid environmental pollution. "
Speaking of this, Wu Hao half-joked at Nan Cheng: "Actually, these sands are best used for burning bricks. The bricks produced are strong and very suitable for paving roads or construction.
It’s just that the cost is too high and it is difficult to popularize it on a large scale. "
Hahaha……
Everyone laughed when they heard Wu Hao's words. This is a joke about Wu Hao and his friends using sand to burn bricks to build a lunar scientific research station on the moon. Everyone thought that building a lunar scientific research station on the moon was a very high-level matter. Who knew that Wu Hao and the others were baking bricks on the moon? How is this different from that on the earth?
Just like that famous meme, humans can't get rid of boiling water in different ways. In addition to hydropower generation, whether it is a thermal power station, a geothermal power station, a nuclear power station, or even a solar molten salt power station, they all boil water in a different way, but the way of boiling water is different.
After the laughter subsided, Professor Zhang Chengwang asked with a smile: "How big is this Populus euphratica forest?"
It all adds up to about 40,000 to 50,000 acres. Shen Ning answered.
It is not easy to plant such a forest area of 40,000 to 50,000 acres in this desert Gobi. Professor Zhang Chengwang affirmed.
Yes, this has to be said to be a miracle. Professor Huang Shiwei also said with emotion.
Yang Fang continued with a smile: "Now this forest area continues to expand, almost by 5,000 acres every year. It is expected that in a few years, the Gobi Desert near our park will be Wear green.”
Okay, with this forest area, it's like driving a nail in this desert. With this place as our support, we have the confidence to conquer this desert.
Speaking of this, Deputy Director Cheng looked at Wu Hao and couldn't help laughing: "Forget it, I'll leave this to you. I believe that with your efforts, the desert here will be covered with green. We Let’s concentrate on facing the harsh forms in other regions.”
Quack, quack…
Following several cries, several pheasants flew up from the forest area, and then flew away into the distance.
Oh, there are so many wild animals. Huang Shiwei pointed at a few rabbits popping up over there and said.
"Haha, since the formation of this forest area, we have seen many animals here, including wolves, jackals, leopards, deer, antelopes, sheep, foxes, rabbits, eagles, pheasants, eagles, etc. .
Last year, an animal research and protection organization from a university in Beijing conducted a survey here. More than 30 kinds of animals were found alone. It can be said that this forest area has become the habitat of these animals in the Gobi Desert. A haven and a paradise. "Yang Fang smiled at everyone and said.
“In the past, we would go to this forest area to play after get off work and on weekends. Because the environment here is good and cool, many people would choose to camp here.
But later, people discovered wolves, jackals, leopards and other large carnivores here one after another, so no one dared to camp here, and no one dared to come here at night. Usually when I come here on weekends, I always come in groups and I don’t dare to come alone. "
It can be seen that you all protect this forest area very well. I have been looking at it for a long time and I haven't found any garbage. Professor Zhang Chengwang said with a smile.
Haha, on the one hand, this is because everyone is conscious, on the other hand, we will also organize relevant volunteers to clean up the garbage regularly, so the environmental protection is relatively good, and basically there is no garbage to be seen.
At this point, Yang Fang changed her tone and said: "Of course, there is no garbage. For example, when the wind blows, a lot of garbage will float to us.
This is also one of the main reasons why we hate tourists coming here, because some tourists are of poor quality and litter everywhere. It spreads everywhere when the wind blows. It's so big here that it's really hard to clean.
However, we do not have the right to prevent tourists from visiting this desert. This is their freedom and right. Besides, this is also a way for the locals to get rich, and we can't cut off other people's wealth. "
The relationship between nature and people, the relationship between the environment and tourists is a topic that must always be discussed. Deputy Director Cheng sighed with emotion: "Theoretically speaking, there is no contradiction between the two, but in reality they are very contradictory. How can we improve the relationship between the two so that they can work together harmoniously?" , this is a difficult problem.”
Is there a fish mother in this water? Professor Huang Shiwei asked in surprise.
Heh, he's not young yet. Professor Zhang Chengwang looked at the dark shadow flashing in the water and couldn't help but exclaimed in surprise.
There's, over here, such a big fish...
The students all became excited and stood on the bank and actively pointed at the Zhazi Cave.
Yang Fang explained with a smile: "Haha, these are some of the seedlings we released in the experiment. They are mainly freshwater fish, including carp, grass carp, catfish, tilapia, crayfish and the like.
As long as it is hoped to establish an ecosystem in the river, it will also provide food for some birds living here. At the beginning, these fish still needed us to put feed, but gradually they no longer needed it. "
It’s grown so big, why don’t you fish it out and eat it? Suddenly a student licked his lips and asked.
Hehehe...
Everyone laughed when they heard the student's question.
Yang Fang smiled and shook her head: "No one really wants to eat the fish here. Although the sewage has been purified at all levels, it still has a certain degree of pollution. Therefore, naturally no one wants to eat the fish growing here. have eaten.
Besides, it is not easy to raise these fish, and it would be too troublesome to raise them again if they are eaten, so no one wants to take advantage of them. "
At this point, Yang Fang seemed to suddenly think of something, and then said with a smile: "No, there are still some people who are interested in them, but not for eating, but for playing."
Play? Everyone was puzzled.
Yes, Yang Fang nodded with a smile and said: "Because there are more and bigger fish here, naturally it attracted some colleagues who like fishing, and gradually there were more fish.
After all, there are very few places to fish in this desert in the northwest. Therefore, the fish here naturally attract the interest of many people, so many people come to fish every weekend.
However, they do not fish for food, but for fun. "
(End of chapter)
