Desertification is a major ecological problem facing the world.
my country is the country with the largest area of desertification, the most affected population, and the most harmful wind and sand.
Now, my country's has cultivated a "sand-swallowing beast" that can make 40 acres of sand disappear in one day.
Is this true or false?
What machine is the "Sand-swallowing Behemoth"?
It is - a sand fixing truck.
With the continuous development of global environmental governance technology, my country's machine sand fixing field has also achieved good results.
Gansu Province has officially launched multi-functional sand fixing truck designed and manufactured by Professor Liu Jinhao's team of Beijing Forestry University .
It is as efficient as 50 times compared to artificial sand fixation. It can plant about 2,000 vegetation plants per hour, and can also achieve 5,600 square meters of vegetation coverage. It can achieve about 40 acres of plant coverage every day, and the survival rate of planted vegetation is greatly improved.
Use wheat straw, straw, reeds and other materials to tie them into square shapes in the desert.
is called - grass square sand barrier.
It is a method to prevent wind and sand.
This method is used. can make the ground rough and reduce wind force. The other is to intercept water, such as rainwater, and improve the survival rate of plants.
According to the experiment, the scale of the grass square sand barrier is the best in square 1 meter × 1 meter square .
Here, this sand fixing truck has two technologies.
One is an innovation point;
In order to adapt to grass grids of different sizes, swing step-by-step insertion technology and horizontal and vertical scissors-fold continuous grass-featured conveying technology were created.
Another is an advanced point;
can improve the quality of cut and flat stubble according to different terrain and terrain.
Of course, it is worth mentioning that the purpose of that appeared on this machine is to target the current severe land desertification.
is said to be a sand fixation, and other functions are very comprehensive.
For example, if you plant seedlings in , you can plant plants under the desert at about 25 cm.
and irrigate water at the root of vegetation ;
Although this is only in an initial stage, I believe this machine will make great achievements in the future.
Then, the question is here!
How serious is land desertification in my country?
Desertification has caused the world to lose more than 10 million hectares of arable land every year, and the economic losses of exceed US$4 billion.
The area of desert and desertified land in my country is about 1.607 million kilometers, accounting for 16.7% of the country's land area. Among them, the area of desertified land in arid areas is 876,000 kilometers, and the area of desertified land in a semi-arid area is about 492,000 kilometers.
According to data, China's desertification has been deteriorating for nearly half a century and has not improved at all.
means that the speed of desertification control cannot keep up with the speed of being destroyed.
What are the main reasons for desertification?
Natural factors: refers to the degradation of vegetation due to climatic conditions and loose surface materials, which lead to vegetation degradation and accelerated wind erosion, causing desertification.
Man-made factors: refers to people's excessive grazing, random logging, reclaiming grasslands, unreasonable development of mineral resources, and unreasonable utilization of water resources.
means that natural and human factors act in a fragile ecological environment in a comprehensive manner, causing vegetation to break down and desertification to begin to appear and develop.
If desertification is not controlled, great harm will occur.
is here, we can work hard through the following aspects.
First, protect existing vegetation and strengthen forest and grass construction;
can promote ecological natural restoration through tree planting.
Second, rationally allocate water resources to ensure ecological water use;
Yes, the most lacking thing about desertification is water, and we must make full use of water resources here.
Third, control the excessive growth of the population and continuously improve the quality of the population.
and vigorously develop artificial grasslands or artificially improved grasslands to accelerate the cultivation of excellent livestock species and optimize the livestock species structure.
realizes the historic transformation of from "sand advances and people retreats" to "green advances and sand retreats" .
Director of the Sand Forestry Center of the Chinese Academy of Forestry and Director of the Institute of Desertification Lu Qi once said:
"Desert is not a disease, desertification is a disease. Desertification is called earth cancer, and it must be cured!"
Do you still remember Babusha ?
No grass grows in the land, and yellow sand is everywhere.
It is located on the southern edge of Tengjie Desert . It was once the largest wind-sand mouth in Gulang County, Wuwei City, Gansu Province.
Sand dunes move south at a speed of 7.5 meters per year, seriously infringing on surrounding villages and fertile fields, and even roads and railways have caused huge harm.
even wants to "escape from home" step by step and go to other places.
And in the spring of 2022, Gulang County Babu Sha Forest Farm completed 20,000 acres of ant forest afforestation in the northern sand area .
and planted more than 4 million flower sticks, halaxad, and lemon strips, and completed replanting and afforestation of more than 5,000 mu and planting more than 500,000 seedlings.
Up to now, the forest farm has completed 257,000 mu of desert control and afforestation.
In short, preventing desertification is a common challenge facing mankind.
We can only continue to afforest and increase greening in and lay grass. uses advanced technology to seek a green living space in the yellow sand. This is what we need to do now!
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