In order to prevent the frequent occurrence of sandstorms, what specific measures has our government taken? (Write at least two sentences)

1 Large-scale afforestation, such as the Three-North Shelterbelt 2 Control of soil erosion on the Loess Plateau 3 Prohibition of indiscriminate cutting and punishment, and unreasonable grazing

1. In-depth study of the occurrence and development of sandstorms is necessary Mechanism, perfect and improve the monitoring methods of sand and dust storms, improve the level of monitoring and early warning and forecasting of sand and dust storms, and minimize the losses caused by sand and dust storm disasters. The China Meteorological Administration has held two national sandstorm research and forecasting service conferences, and officially launched national sandstorm warning and forecasting services on March 1, 2001. In 2002, it established the first national sandstorm expert committee to raise funds for the country's first sandstorm warning and forecasting service. The first phase of the sandstorm monitoring and early warning service system project aims to use 3-5 years to build a modern monitoring and early warning service system that covers the areas where sandstorms occur and are seriously affected in my country, so as to effectively monitor and warn the occurrence and development of sandstorms.

2. Increase the return of farmland to forests and greening the northwest ecological environment. It is necessary to protect existing vegetation, and on the basis of reducing man-made environmental damage, increase the project of returning farmland to forests and grasslands to build a new northwest with beautiful mountains and rivers; it is necessary to establish a water-saving social system and strive to improve water resource utilization. The ecological environment in arid areas is very fragile, so the development of the national economy must be coordinated with resources and the environment, make rational use of local resources, and establish an appropriate industrial structure to achieve the unity of economic, ecological and social benefits.

3. Strengthen legal publicity and education work such as the Law on Desertification Prevention and Control, the Forest Law, and the Land Law, and strive to improve the public’s awareness of environmental protection, so as to build a well-off society and rationally develop and utilize resources. combined. Adhere to the ecological protection and construction policy of "prevention first, protection first, and prevention and control equal emphasis", accelerate the construction of bioengineering and technical projects for disaster prevention and relief, and focus on sandstorm protection forests, soil and water conservation, and ecological environment protection.

4. Strengthen the scientific popularization of disaster prevention and reduction among the masses. Pay attention to the sandstorm weather forecast warning, and depending on the arrival time of the sandstorm, students who are close to home will be dismissed from school early, students who are far away will be kept in school, and open-air club activities will be ended in advance. Safety and defensive measures such as plastic greenhouses should be taken in advance. After on-site investigation, it was found that the direction of plastic greenhouses in spring is closely related to strong sandstorm weather. Generally speaking, if the direction of the greenhouse is parallel to the wind direction in sandstorm weather, the loss will be large, and if the direction of the greenhouse is perpendicular or nearly perpendicular to the wind direction, the loss will be small.