1. Strengthen environmental protection and raise it to the height of legal system.
2. Restore vegetation, strengthen biological protection system and prevent sandstorms. Protect and restore forest and grass vegetation according to law, prevent further expansion of land desertification, and minimize dust sources.
3. According to the local conditions in different regions, formulate disaster prevention, disaster prevention and relief plans, actively promote various disaster reduction technologies, and build model projects, gradually promote them from point to area, and further improve the regional comprehensive defense system.
4. The long-term predatory exploitation of natural resources has caused serious damage to the natural ecological environment, and the deterioration of the environment has provided a rich source of dust for sandstorms.
5. Control population growth, reduce the pressure of human factors on land and protect the environment.
6. Strengthen the popular science propaganda on the relationship between the occurrence and harm of sandstorms and human activities, and make people realize that once the living environment is destroyed, it will be difficult to recover, which will not only aggravate natural disasters such as sandstorms, but also form a vicious circle, and people should consciously protect their living environment.
Edited on 20 13-05-04
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How to eradicate sandstorm
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What should be done to eradicate sandstorms and droughts?
Plant more trees to protect the ecological environment.
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How do sandstorms come about? How to manage?
Sandstorm is a general term for sandstorm and sandstorm. It refers to a severe sandstorm weather phenomenon in which strong winds blow up and drag a large amount of dust substances on the ground into the air, making the air particularly turbid and the horizontal visibility less than 100 meters. According to Xinhua News Agency, Lanzhou Electric Power Co., Ltd., with the efforts of experts from the Institute of Environment and Engineering in Cold and Arid Regions, Chinese Academy of Sciences, recently successfully completed a wind tunnel simulation experiment of sandstorms to explore the start-up and transportation mechanism of sandstorms. Experts found through experiments that soil wind erosion is the primary link in the occurrence and development of sandstorms. Wind is the most direct driving force of soil, among which the nature of airflow, the magnitude of wind speed and the related conditions of wind action in soil wind erosion are the most important factors. In addition, soil water content is also one of the important reasons that affect soil wind erosion. This experiment also proves that plant measures are one of the effective methods to prevent and control sandstorms. Experts believe that plants usually affect wind erosion in three forms: dispersing certain wind momentum on the ground to reduce the transmission between airflow and dust; Stop the movement of soil, dust, etc. In addition, through experiments, the researchers concluded that the occurrence of sandstorms is not only the product of specific natural environmental conditions, but also has a corresponding relationship with human activities. Man-made overgrazing, deforestation, industrial and mining traffic construction, especially man-made overgrazing, destroyed the ground vegetation, disturbed the ground structure, formed a large area of sandy land, and directly accelerated the formation and development of sandstorms. The culprit of sandstorm The culprit of sandstorm: atmospheric circulation The brief scene of sandstorm in Beijing in spring is just a weather process that the Loess Plateau, which stretches for about 300,000 square kilometers in northern China, has experienced every year for two or three million years. The difference is that the wind of the latter is stronger and the wind lasts longer (it can last for several days). The source of sandstorm is not the crossroads 50 meters away, but the desert and Gobi hundreds of kilometers away. It's like God is playing an incredible game: he grabs the dust on the surface of deserts and Gobi in northwest China and Central Asia and throws it to the southeast, leaving a highland where the dust falls. This game started about 2.4 million years ago, and God is still enjoying it (in 2002, Nature published the latest research results of China scholars, pushing the start time to 22 million years ago). In fact, the wind is God's hand that throws sand. 1 Sandstorm control measures. Strengthen environmental protection and raise environmental protection to the height of the legal system. 2. Restore vegetation, strengthen biological protection system and prevent sandstorms. Protect and restore forest and grass vegetation according to law, prevent further expansion of land desertification, and minimize dust sources. 3. According to the local conditions in different regions, formulate disaster prevention, disaster prevention and relief plans, actively promote various disaster reduction technologies, and build model projects, gradually promote them from point to area, and further improve the regional comprehensive defense system. 4. Control population growth, reduce the pressure of human factors on land and protect the environment. 5. Strengthen the popular science propaganda on the relationship between the occurrence and harm of sandstorms and human activities, and let people realize that once the living environment is destroyed, it will be difficult to recover, which will not only aggravate natural disasters such as sandstorms, but also form a vicious circle, and people should consciously protect their living environment.
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Isn't there a good way to control sandstorms?
I don't think so. Not to mention social problems such as financial resources (if the problem of desertification can be solved, I believe the country will definitely spend huge sums of money). China has a huge area of desertification. Where can there be so many wastes? In addition, even after harmless treatment, there are still some harmful substances in the waste, which will inevitably pollute the desert soil, worsen the fragile ecological environment in the desert area and increase the difficulty of further treatment. In addition, there are some animals and plants in the desert area. If these wastes are added, their habitats will be disturbed, which is not conducive to their survival. Third, the coverage can't be full coverage, and there are bound to be some pores. You should know that these pores will form a narrow tube effect of wind, which will increase the wind speed and strengthen the wind erosion on the surface! Fourthly, it should be considered that in the long-term evolution process of desert areas, crust with a certain thickness has been formed on the surface, and these crusts have a certain control effect on the sand formation on the surface. These articles will destroy these crusts and aggravate the sand formation on the surface. Therefore, desertification control is still a long-term process and should be carefully studied. At the same time, it is not good to use purple stems upstairs, because the growth of these plants consumes nutrients in desert soil, which is more and faster than other desert plants. After several years, these plants will die, and at this time, the nutrient level of desert soil is also very low, which is not conducive to the cultivation of other plants and has a negative impact.
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What does sandstorm mean?
The occurrence of sandstorm is not only the product of specific natural environmental conditions, but also has a corresponding relationship with human activities. Man-made overgrazing, deforestation, industrial and mining traffic construction, especially man-made overgrazing, destroyed the ground vegetation, disturbed the ground structure, formed a large area of sandy land, and directly accelerated the formation and development of sandstorms.
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