In the eyes of most human beings, the home of the earth we live on is a blue planet, and after the launch of satellites, people gradually discovered that in addition to the blue ocean, the land where people live began to slowly become gray from "green", which is caused by the continuous development of science and technology due to excessive pollution.
In recent years, the level of science and technology in all countries in the world has developed rapidly, and human beings are also working hard to improve the global environment. There is good news from NASA's satellites, they found that the earth is turning green, of which the continent brings the most "green" land to the earth, followed by India, but India's "greening" is worrying, and some experts say that India is planting a bomb for itself.
The mainland's greening achievements in recent years
The Maowusu Desert is one of the four largest deserts in China, with a total area of 42,200 square kilometers, half of which is in Yulin, Shaanxi. With an annual desertification reversal rate of 1.62%, Yulin is constantly shrinking the desert area, and the trees planted are arranged according to a distance of 1 meter, which can circle the earth's equator 54 times.
As time goes by, the area of the Maowusu Desert is gradually decreasing, and in April 2020, the Shaanxi Forestry Bureau announced an exciting news. After decades of wind and sand control, the treatment rate of desertification land in Yulin City has risen to 93.24%, which means that the Maowusu Desert will disappear from the continental map plate!
There is also the green miracle that shook the world - Saihan Dam. Saihanba is located in Weichang Manchu Mongolian Autonomous County, Chengde City, Hebei Province. The area concentrates a variety of extreme environments such as high cold, desertification and little rain, with an average annual temperature of only -1.9 °C and a frost-free period of only more than 50 days a year.
Life here is very difficult, and you dare not think about planting living trees. But it is in this context that three generations of Saihanba have worked hard for 50 years, from a desert without a tree to the world's largest artificial green sea of 1.12 million acres.
In addition to Saihanba, it is the Kubuqi Desert. The Kubuqi Desert is the seventh of the eight deserts on the continent and is a milestone in global desertification control. The villagers here said: "When I was a child, the village was full of sand outside the village, there were sand dunes in front of and behind the house, and the sand dunes often arched the roof, and they had to top the door when they slept at night, because they were afraid that the wind and sand would pour into the house at night. ”
Now, decades later, grass squares lock the dunes, herds of cattle and sheep enter the shed, and green grass continues to expand. These are also the struggles of the ancestors here for generations.
The data show that the green coverage rate and the green space rate of built-up areas in mainland cities have increased rapidly. In 2017, the greening coverage rate of urban built-up areas nationwide reached 39.70%, an increase of 8.55 percentage points over 2003, with a compound annual growth rate of 2.23%; The green space rate of urban built-up areas in China has reached 35.78%, an increase of 8.52 percentage points over 2003, and the compound annual growth rate is 2.50%.
In 2017, the green space area of urban built-up areas in China was 1.82 million hectares, an increase of 1.0482 million hectares over 2003, with a compound annual growth rate of 8.11%; The area of green space in urban parks is 582,400 square meters, an increase of 582,400 square meters over 2003, with a compound annual growth rate of 9.28%, of course, this is the result of the joint efforts of the country and the people.
Why is India's "greening" a concern among experts?
From the satellite images taken by NASA, it can be seen that in addition to the land of China and India began to turn green, there are few other countries green, and some scientists bluntly say that India's greening has greater hidden dangers, so why are the mainland and India both "green", then India's has a problem?
In fact, India's "greening" and the greening of the mainland is not a way of greening, the mainland is mainly to return farmland to forest, farmland to grassland, desert greening, the World Health Organization said that the mainland to do these greening will not change on a large scale because of human activities, that is, these greenery can maintain itself and become more and more luxuriant.
India, on the contrary, cannot say that they cultivate grassland and forests to cultivate, but the main means of their "greening" is the expansion of agricultural planting area, that is, India has turned some natural lands such as river beaches and wasteland into farmland, and the original good ecological environment has been destroyed, and it has become farmland in a blink of an eye.
Experts learned that the increase in agricultural products in India in recent years is not caused by scientific research results, it is precisely because of India's large-scale reclamation to increase crop planting area, from quantitative changes to qualitative changes, this practice is indeed very Indian.
Moreover, such unscrupulous land reclamation will also lead to a rapid loss of groundwater, which greatly increases the possibility of natural disasters. Not only that, the nutrient loss of the land will be excessive, so that when the time comes, it is in a hurry to green, but there is nothing to do, and it is impossible to reach the dust, which is the time bomb that India has planted for itself.
summary
Afforestation is a long-term solution, the main role of trees is to maintain water and solidify the soil, and the strong root system of trees can conserve water sources and stabilize the soil for this land. In this way, the impact of growing crops on a large scale in India is reversed. It can not only provide us with a large amount of groundwater, but also effectively alleviate the process of land desertification and reduce the encroachment of wind and sand on us.
Moreover, the current global warming problem that all mankind is facing urgently needs to be alleviated by planting trees, and this juncture means that India can do such a marginal thing, which will not only have an irreversible impact on the future of its own country, but also have a corresponding impact on the world.