With the ＂hard touch＂ of the ＂sower＂ on the ＂hard touch＂ plateau, ＂add＂ green green green green to make the wasteland turmoil
CCTV News:Right now, it is the good time of “adding” trees in all parts of the country.Qinghai, located in the “
CCTV News:Right now, it is the good time of “adding” trees in all parts of the country.Qinghai, located in the “source of Sanjiang”, is an important ecological barrier in our country.However, due to the high cold and rain, strong ultraviolet rays, and large evaporation, some areas of the Qinghai Plateau are scarce in all years, and they are one of the areas with difficulty in planting trees in China.Here, how to find suitable tree species, how to make a tree successfully survive is much more difficult than many places.And such a difficult thing, some people have done it for decades.
In the past two days, large -scale trees are planted in the north and north mountain area of Xining in Qinghai.There are steep terrain, high altitude, and difficulty in planting trees. The forest guards can only plant a tree seedlings on the mountain by manpower.
At this time at this time, Zhang Jinmei, director of the Institute of Forestry Sciences of the Xining City of Qinghai, follows the forestry workers into the mountain planting trees and observe the growth of the tree species.
On -site observation to find the “password” of the survival of plateau trees
The geological conditions of the plateau mountain areas are complicated, not only the high alkali volume, but also there are many rocks. In addition, the climate conditions are changing, and the survival conditions of the trees are bad.In addition to planting trees, Zhang Jinmei also needs to observe the dead condition of the trees and collect the survival of different trees on the plateau to find more “passwords” for altitude trees.
Zhang Jinmei said that seedlings are the key to improving the survival and preservation rate of trees on the plateau.For decades, she and her colleagues have continuously screened drought -resistant plants and transplanted with soil to transplant the seedlings to observe whether they adapt to the plateau climate.
On average, it is more than 200 days in the wild in the wild
Zhang Jinmei has collected thousands of high -quality altitude tree species.In order to collect these excellent varieties, Zhang Jinmei ran throughout the plateau, with an average of more than 200 days in the wild.
“Hard touch” plateau trees with a harsh environment is difficult
In the days with the “hard touch” with the harsh natural environment, Zhang Jinmei and colleagues finally explored the technical specifications of eight varieties such as poplars and other eight varieties of poplars, which increased the afforestal survival rate to more than 80%.Among them, the selected pop breeding of the “trunk, thick tree diameter, wide crown, and strong resistance”, the breeding cycle was shortened by three to five years.Good tree seedlings should be planted well. Compared with other regions, trees planting trees on the plateau cliffs must face not only harsh soil conditions, but also the danger that may occur at any time.
Small scenes on the cliff of planting trees
The soil conditions on the mountain are poor. Trees need to dig a ladder on the mountain. The sapling must also be on the cliff with nutritional soil transportation. The difficulty can be imagined.
The deserted land turning green forest coverage has increased significantly
After years of hard work, the forest coverage of the north and south mountains of Xining City has increased from 7.2%to 79%at the beginning, and the cold and dry Xining forest coverage rate has reached 37%.One generation of tree -planting people is making this plateau greener and more beautiful.
Source: CCTV
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