I! Pretending to Be Reborn, Director of Doomsday Hoax

He put down his phone and read the national work report again.

Judging from the current situation, the upsurge of construction in various places has reached a new height after the '721 Meteorite Falling Incident'.

Moreover, people's sense of urgency has become more urgent.

According to this progress, by the end of July, the deep excavation of the dungeon will be fully completed, and from the beginning of August, various places will start to dig the dungeon vertically, hollowing out the land below 50 meters.

And this hollow area will be the underground city area where people live.

At that time, the first batch of crops, vegetables, melons and fruits will also ripen.

Some fruit trees with a long growth cycle will be cut down after harvest and become construction timber, etc., and the remaining land will be replanted with crops with a short growth cycle.

Thinking of this, Xu Qiu was suddenly taken aback.

He thought of a new problem, and this problem had to be faced in the next Little Ice Age!

"Everyone, I don't know if you have considered how a large number of non-cold-resistant trees survived during the Little Ice Age?"

Xu Qiu's words stunned Zou Baitao and the others.

"This.…"

Lu Guangyuan thought about the seriousness of the consequences, his face turned pale, and said: "In the southernmost provinces, Guangdong, Fuzhou and other regions, their bananas, coconut trees, fortune trees, and king rice dumplings are not cold-resistant. Below seven to ten degrees, you may die!"

"What's more, it's a low temperature below zero, even more than ten degrees below zero!!"

The forests in these areas are planted with tropical and subtropical tree species, which are adapted to high temperature, hot and humid environments.

It stands to reason that there is no need to worry about the cold in these areas, because no matter how cold it is, it is only a dozen degrees.

However, the arrival of the Little Ice Age will bring disaster to these plants!

Xu Qiu was thinking about it, and after a while, he said in a deep voice, "Please come over to experts from the Longguo Forestry and Grassland Bureau to discuss how to winterize these trees!"

After finishing speaking, he remembered something, and said, "Also, call some experts from Longguo Energy Bureau and Northwest Energy to come over. I also have important matters to discuss!" Lu Guangyuan bowed his head in response, and immediately summoned the two departments people.

Li Bingqing and Zou Botao who stayed behind were full of doubts.

At this juncture, he suddenly called the Energy Bureau, and he was also an expert specializing in Northwest energy, what was his intention?

At one o'clock in the afternoon, twelve experts from the State Forestry and Grassland Administration came to the meeting room of the Emergency Bureau Building.

The Forest Resources Management Department, the Science and Technology Department, and the Ecological Protection and Restoration Department received the most people from the three lower-level departments. Others include the Grassland Management Department, Wetland Management Department, and Wildlife Management Department.Fang Gaoyi, director of the Department of Forest Resources Management, said: "In some high mountain areas in the south, the tree species may be fine, but...the many non-cold-resistant tree species at sea level may really die!"

"The reason why trees in the north are resistant to cold is that they have evolved an anti-transpiration and anti-freeze mechanism, such as the bark is particularly loose and thick, the leaves are small or thin and wrapped in a waxy film, or have a layer of fluff, and the sugar content in the body increases to increase resistance. Cold and falling leaves reduce transpiration, etc..."

"If the trees in the south want to survive, I'm afraid they can only use traditional methods!"

The crowd was silent.

In fact, there are already clear scientific plans for the cold protection measures of trees.

For example, irrigation with frozen water.

In areas where the soil is easy to freeze in winter, before the land is frozen, water is poured once, which is called "frozen water irrigation".

In this way, after freezing, a layer of permafrost will be formed around the roots to keep the temperature of the roots relatively stable, and the plants will not be damaged by sudden changes in the external temperature.

There is also whitewashing and spraying.

Whitewash the branches with lime and lime sulfur, which can reduce the damage to the sunny skin due to the large temperature difference between day and night, and can also kill some overwintering pests and diseases.

Another common method in cities is to put a layer of thermal clothing on the tree.

That is, use straw ropes to roll up the stems or wrap the main trunk and some main branches with straw to prevent cold.

When wrapping the grass, the grass tip is upward, and half of the grass is laid flat on the ground. From the dry base, the grass is folded upward, wrapped continuously, and bundled horizontally every 10 to 15 cm, layer by layer upward to the branch point.

Part of the main branch can also be wrapped if necessary.

"but."

Fang Gaoyi showed a look of embarrassment on his face, and said: "But these methods are aimed at the low temperature of a few degrees above zero, at most three or four degrees below zero. If it is lower, it will not have much effect. ."

"Other methods, such as root cultivation, dry leaf mulching, spring irrigation, and crescent-shaped mounds, are not very suitable."

"The only way is... a greenhouse!"

"Protect all the trees with a warm greenhouse, build wind barriers, insulation films, etc., to ensure the temperature of the trees inside the greenhouse. This is more than ten degrees below zero, or even more than 20 degrees, so that these non-cold-resistant trees can survive the only way."

Xu Qiu shook his head.

Greenhouses can be realized for a small number of trees in the city, and they do have the effect of preventing cold.

But what about the vast southern forests?

Could it be, pull up a thermal insulation greenhouse covering the entire forest? .

Chapter 82 Ice and snow are frozen, forests are destroyed, how can we save them?

This is an unrealistic approach.

For small farmlands, greenhouses can effectively prevent crops from frostbite or avoid hot climates.

However, for large-scale forests, isolating the entire forest from the natural world, blocking the circulation of oxygen and carbon dioxide, will bring terrible disasters.

First, photosynthesis is blocked or even stagnated.

The top of the greenhouse may also be covered with thick snow, which reflects sunlight and prevents the trees in the forest from photosynthesizing.

Without photosynthesis, the tree will die soon after consuming the nutrients stored in the body.

Second, respiration disappears.

A complete forest is about [-] square kilometers, or even larger, and the number of trees growing in it is at least [-] to [-], and the number of large forest trees is hundreds of thousands.

With the cover of the greenhouse, the entire forest becomes a closed space, and the only remaining oxygen in it will be quickly consumed by these plants.

This will not only damage plants, but also bring disasters to various animals in the forest ecosystem.

Fang Gaoyi looked a little lonely.

Twenty or thirty degrees below zero, only cold-resistant species such as birch, winter melon, eucalyptus, larch and sylvestris pine can survive, and trees in the south that have not even experienced subzero temperatures may die in large numbers under the severe cold .

If no measures are taken, the forest disasters brought by the Little Ice Age this time may be no less than the forest fires in the Kangaroo Country...

"Is there any other way, everyone?" Xu Qiu glanced at the crowd and asked.

At this time, the chief technician of the Science and Technology Department stood up, bowed to Xu Qiu, and said respectfully:

"Director Xu, our Department of Science and Technology, not long ago, developed a new type of anti-cold and anti-freeze device for trees..."

"Tell me."

The chief technician took out a blueprint, which is the design drawing of the cold protection device.

"Our new type of anti-cold and anti-freeze device for trees includes gusset plate, insulation board, insulation cotton, bottom plate, limit rod, slide plate, spring and other components.〃

"Among them, the base plates are arranged symmetrically on the left and right sides of the tree and connected to the ground. And the symmetrical base plates are connected to each other."

"On the top of the bottom plate is the gusset plate. There are multiple insertion rods between the two, which are respectively inserted into the insertion rod slots on the bottom plate."

"The pinch plate is the same as the bottom plate, which is also symmetrical and connected to each other."

"There is an inner groove on the gusset plate, and this groove will be connected to the outside of the insulation board. There is insulation cotton inside the insulation board, which can play the role of heat preservation and cold protection."

"In terms of design, there is a No. [-] hole on the top of the gusset plate, and No. [-] hole on the top of the insulation board. The No. [-] hole is coaxial with the No. [-] hole. The trees pass through the No. [-] and No. [-] holes, which can play a good role in cold protection. Effect!"

Xu Qiu nodded.

This design drawing is very simple, but it has certain practicality.

Most importantly, it should be very easy to install and remove.

If Xu Qiu's analysis is not wrong, the way to use this device is to wrap the hemp rope around the roots of the trees to protect the roots from the cold, and then insert the insertion rod into the insertion rod groove to position the insertion rod against the pinch plate.And gusset plate inside has one deck insulation board, fills insulation cotton between trees and insulation board, and insulation cotton and insulation board are antifreeze to tree bottom.

Then, vertically insert the limit rod into the semi-U-shaped groove until it is rotated [-] degrees in the semi-circular groove, so that the limit rod is horizontal, and the limit rod is aligned with the limit rod groove.

Then, the post is inserted into the post slot, and the stop bar is connected to the stop bar slot under the elastic force of the spring, and the lower surface of the symmetrically arranged pinch plate is at the same level under the action of the stop bar.At this time, the limit rod can vertically position the left and right symmetrical pinches, and the inserting rod can position the left and right pinches horizontally and axially.

Through the cooperation of the insertion rod and the limit rod, the symmetrical No. [-] hole is firmly connected and connected with the bottom plate.

Skilled personnel, a single person can complete the installation of the cold and frost protection device for a tree within 1 minutes.

And disassembly is more convenient, open the pinch plate, turn the limit lever back to [-] degrees counterclockwise, and the whole device can be dismantled one by one.

However, this device has a huge problem.

Xu Qiu's eyes were piercing, and he asked: "This idea is very good, but... such a large amount of forest resources, if this device is used, it will consume a huge amount of building materials. Have you considered this issue?"

For oil and natural gas, the scope of exploration and exploitation can be increased regardless of the cost, but obviously, forest resources do not have this kind of treatment.

To the extent that the Dragon Kingdom can bear, these forests should be preserved, but if the construction of the dungeon is greatly affected, these things can be discarded.

Xu Qiu's eyes were deep.

Now, the forestry and forest protection departments in the equator and surrounding latitudes are probably facing the same problem as Longguo.

For example, in the northern part of Longguo, such as Daxingling District, Xiongguo, Maple Leaf, etc., there are many cold-resistant tree species in the primeval forest, and they are not afraid of this Little Ice Age at all.

Especially Maple Leaf Country,

This country is located in the cold temperate zone and frigid zone, and most of its territory is north of 47 degrees north latitude. Even in the southeastern region with a cool climate, the temperature in winter can drop below minus [-] to [-] degrees.

In Maple Leaf’s country, there are maple trees growing wildly all over the mountains. In the golden autumn, the autumn wind is rustling, and the maple leaves are like the morning glow!

And for this kind of trees, it is not difficult to resist minus [-] degrees, and they can even grow normally in the ice and snow of minus [-] to [-] degrees!

If the temperature is lower than minus [-] to [-] degrees, the red maple will stop growing and enter a dormant period to ensure that its root system and trunk will not be frostbitten.

But if you want the red maple to freeze to death in winter, you need a lower temperature.

In addition to these areas, people in tropical, subtropical, and temperate regions are all worried about the warm-loving trees in the country!

For example, Malaisuya, a country known as the country of rubber, has a large amount of rubber planted in the country, which is one of the most warm-loving trees.

Rubber trees can only survive in places where the annual average temperature is above 25 degrees. They are typical tropical tree species. They can grow and produce rubber normally within the range of [-] to [-] degrees.

And once the temperature is ten to fifteen degrees, it will stop growing, and when the temperature is lower than five degrees Celsius, there may be frost damage...

Twenty or thirty degrees below zero will destroy the rubber in this rubber country in an instant! !

I am afraid that other countries are also not feeling well. Chinese fir, masson pine, moso bamboo, tung tree, etc., these trees that grow in the tropics and subtropics, probably did not expect that one day they would have to face the low temperature of minus [-] degrees.