In the Mu Us Sandy Land, the woods on both sides of the communication line are already more than one person high.
& & The earliest fast-growing tree species did not survive much, but now they are more than 20 centimeters in diameter and three or four meters high.
Just too few, they stand sparsely in the middle of the bushes.
It's also a sight.
The water from the canals on both sides of the road does not directly irrigate the woods, but feeds the drip irrigation pumping stations.
The drip irrigation pipes were replaced from steel pipes to rubber pipes.
Even in the woods, which are already more than one person high, the water supply is maintained.
Yu Youren accompanied Zhang Chun on the forest path, the director of the Institute of Desert Environmental Management of Northwest University was a white-skinned young man, named Madel, very young, who had been in this sandy land for eight years, and was one of the first students to come to the Mu Us Sandy Land.
He has settled in Dinghu.
Dinghu Lake is a small lake in the Mu Us Sandy Land, which was not large before, but has now become the location of the research institute and the internship base of Northwest University.
Dinghu Lake is three times larger than the original water surface.
"We failed too much in the selection of tree species, and in general, we used Artemisia oleifera-dominated sandy semi-shrub vegetation as the pioneer in the beginning, and then willow-leaved cascara and caragana as the main sandy shrub vegetation.
Then there are Salix, Salix, Artemisia sylvestris, Caragana and other tree species.
Even when we use irrigation technology, we can only proceed in this order.
It took us five or six years to develop this experience, and in the last four or five years, we have the confidence to control this sandy land.
Because we have used this method to prevent the wind and sand from endangering our transportation system.
The green forest belt has been up to five kilometers wide.
Artemisia annua and sandy bushes largely anchor the dunes. ” It can be seen that the restoration of vegetation is starting to expand outward from the transportation system.
The woods where Zhang Chun is now walking have been divided into at least three layers of canopy.
The sand is covered with a layer of fallen leaves.
Some ferns are considered the lowest level, with the occasional Asteraceae and legumes visible.
As everywhere else.
There are traces of rangers shoveling sand and burying leaves.
Peel back a little of the upper layer of soil to reveal moist sand and rotten leaves.
Some mosses and algae grow very well at the drip irrigation site.
Because it's early in the morning.
The water vapor rising from the ground condensed into dew on ferns and mosses, and some gerbils were drinking them, not afraid of people at all.
In addition to gerbils, there are also hedgehogs, sandgrouses, snakes, and other animals.
"Is this method feasible in Tengger and Badain Jaran experiments?"
Zhang Chun asked.
"Doable.
Now good results have been achieved over there.
Yu Youren said with a smile.
"But the most important thing is water, we don't have the Yellow River here.
Ten years won't do that. ” There is a small patch of wheat and vegetable patches in the woods.
There are three families of rangers living there.
However, Zhang Chun found that the soil of the wheat fields here was somewhat different.
"This is the result of the application of fertilizers, mainly phosphate and potassium.
However, the fertilizer here is specially made, and only after grinding out of raw ore.
Fermentation of microbial cultures is carried out.
No other process has been processed.
The amount of use is larger than in other places, which plays a role in improving sandy soils.
The biogas sludge is also supported by Dongsheng and Yulin, and although we also have a biogas generating station, it is simply not enough.
These farmlands are about three or four years old.
The main thing is to ensure the basic livelihood of our rangers.
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Large-scale unrealistic.
But that's pretty good, too.
In the past, all food had to be supplied from other places.
Now we are about half of the food rations.
Mader explained.
"How many restrictions are there?"
"There are a lot of restrictions.
Like here.
There won't be much wind because it's in the middle of the woods.
We have a good water source.
Then there is the large amount of biogas residue.
Another example is to plant properly and not leave the soil exposed for too long, otherwise the situation will deteriorate rapidly.
The ranger said with a frown.
"How's the water consumption?"
"It used to be larger, and now it has increased slightly as before, but the area for conservation has expanded many times.
The main thing is that the precipitation has increased.
Mader said.
"Precipitation has increased and decreased in the past decade, but overall it has increased by about 10 millimeters.
This year has started better, with more precipitation than last year in the past few months.
Winter time.
For the first time, there was a relatively heavy snowfall.
Ordinary people say that it is rare in this life. ” The further you go, the fewer evergreens there are.
The more exposed the sandy area, the finer the leaf surface of the sandy plant.
In the end, it's all artemisia.
Artificial irrigation only reaches the edge of the bushes.
In addition to small plots of farmland, the rangers mainly feed the camels to settle a portion of the meat and dairy products, and are also the main means of transportation.
Basically no feeding of the flock.
Flocks are present in very small quantities in the pastures around some lakes.
Dinghu Lake, located between three large sand dunes.
The terrain is low.
The water is not deep, but it is crystal clear.
The three large sand dunes have all grown into bushes after hard work.
Some of the Pinus tabuliformis have grown to the top of the mountain.
But walking in the sand dunes shows how much effort has been put into it, because there are rows of dead bushes and buried plant straw everywhere.
I don't know if I don't see it, but if I watch it, I can understand why Mader lamented that he had gone through too many failures.
You can also feel the tenacity and patience of these people.
"The dunes used to be a little higher than they are now.
Once the dunes are fixed, the top is blown away.
Mader looked at the trees that surrounded the sand dunes with a happy expression.
There is not just one lake, but a string of small lakes.
Dinghu is the largest one.
The entire sandy area forms a vast forest in this area.
"There's no need for drip irrigation here.
Our rangers here have a small piece of farmland. ” Farmland is concentrated around the perimeter of the lake, and a road connects the lakes and connects them to the entire line of communication.
Public facilities such as schools and shopping malls are built around Dinghu, and the seven-story research institute is the largest building.
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"How many people are scattered around the area?"
"There are 30,000 people in the Dinghu jurisdiction.
There are about 170,000 people in the whole sandy area. ” "How's the food supply?"
"In addition to the provincial financial allocation, the education fund and scientific research fund take care of us.
Employees are paid and seafood is eaten here as elsewhere.
Yu Youren said with a smile. "170,000 people have been here for almost a decade, and the problem of self-sufficiency has not been solved, which shows how great the cost of selfishness and ignorance is."
The group didn't speak, just walked silently.
Even Niu Niu stopped babbling and fell asleep on Lizhi's back.
In fact, it is not only Mu Usu, except that the Tarim Basin has only taken measures to protect the water conservation forest area.
The rest of the Badain Jarin, Tengger, Hunshandak, Balkhash deserts and sandy lands have been garrisoned by a large number of personnel to deal with it.
The management of the central desert has become a national strategy, and the Mu Us Sandy Land was the first and most successful.
From Badain Jarin to Tengger, the core of governance lies in the Hexi Corridor.
The industrial adjustment of the Hexi Corridor has basically ended, and the transportation and utilization of forestry resources have made many people no longer crowded in the Hexi Corridor to engage in planting, but have entered the Qilian Mountains and entered the Qaidam Basin.
The vegetation in the Qaidam Basin of this era is good, and the desert is there, but it is not serious.
Transportation has been opened here, the population is concentrated in the mining industry, and oil has been discovered here.
The area of plantation has also shrunk further.
It's just that food and food in this area need to be distributed from all over the place.
It can't be done without a well-developed transportation system.
So the migration of people has always been extended with the extension of the transportation system.
And the industrial layout also depends on the processing industry and industry.
For the environment to keep in the nutrient-oriented.
Zhang Chun paid attention to the supply of goods in the mall along the way, after all, Niuniu's food could not always be brought from the south, and most of them had to be purchased by themselves.
It is whether it can satisfy Lizhi's pickiness for food, which has become a sign of whether the commodity supply system is sound.
At present, the food supply is sufficient, but most of it is based on meat products and starch, and the supply of rice is not sufficient.
And a lot of starch is produced by the forestry department.
Fish are mainly marine fish, and the number of freshwater fish is not large, but there are many types of mammals.
Lizhi even bought python meat from Hubei in Wuhai.
Of course, all of them are frozen, and they are shipped in refrigerated containers.
In order to preserve these goods, shopping malls also have large freezers.
And there is no such technology.
Migration will encounter great troubles, and not only will it not promote the environment, but will lead to an increase in the demand for the environment due to the lack of food, which will be harmful to the environment.