First, many people cut down trees indiscriminately and destroy the environment for their own benefit. In my impression, the problem of land desertification in China should have been solved long ago. After all, this ant is collecting energy every day, and everyone is doing their part through their own efforts. But I didn't expect that someone really cut down all the trees on the edge of the desert, and the reason for cutting down these trees turned out to be to grow grapes for human consumption, or to improve the efficiency of grapes.
At first, these people used the excuse of cutting down those bad trees to grow grapes. When they started planting grapes, they cut down those good trees when the managers were not looking. Some of them shed their skins and burn them to make room for the vines. When they succeed once or twice, these people start to go crazy, thinking that no one can cut them down at will. Some people even regard growing grapes as their main source of income, and they waste the hard work of generations when they are alive.
Second, the same plant can prevent sand by planting trees, but not vines. Grapevine is a kind of plant that can grow normally only if it is attached to vines. In general, vines are hollowed out. When the sandstorm comes, vines can't protect the land at all, so trees are different. Taking Hu Yangshu as an example, Populus euphratica is hardy. According to statistics, as long as Hu Yangshu is planted, the wind speed can be reduced by at least 20%, effectively curbing the spread of desert.
In addition, Hu Yangshu is cold-tolerant, and its roots can store water after they begin to grow. Even if it doesn't rain for a while, it won't die because of lack of water, but vines are different. Its growth needs a lot of water. When the moisture in the surrounding soil is not enough to support the growth of vines, farmers must cut down all the plants around to ensure the growth of vines, so the wind and sand will naturally stop it.
Finally: these people are pure idiots, but when people can't eat, even if the grapes are planted well, what's the use? Maybe adults can still live on these grapes?