In recent years, the sandstorm weather in China has obviously decreased. What is the main reason?

In recent years, the sandstorm weather in China has obviously decreased. What is the main reason? At the top of China Meteorological Bureau, the dusty weather began to affect the northwest of China on June 5438+05, including eastern Xinjiang and southern Xinjiang. Western Inner Mongolia appears in western Gansu and central and western Inner Mongolia. There are sandstorms in some areas. Beijing welcomes dust visibility, and the public wears masks to travel. According to the news bulletin issued by Beijing Environmental Monitoring Center, it is estimated that PM 10 will become the primary pollutant and the air quality will be slightly to moderately polluted due to the influence of upstream dust. Zhongxin. com reporter Jin Shuo

Affected by cold air, the influence of dust extends from west to east at present. It is expected that there will be a wide range of dusty weather in northwest, northwest and north China. Among them, sunshine or floating dust will appear in Shaanxi, Shanxi, Hebei, Beijing and other places, and floating dust will also appear in southern Xinjiang basin, western Gansu, central and western regions, Inner Mongolia and northern Ningxia. The weather process will last until 19, and the dusty weather will be suppressed, because some areas have ushered in light rain. "There are two main problems with this dusty weather. In the long run, it has two characteristics. The dusty weather lasted for five days, covering most parts of the north. It can be said that this year's dusty weather has the most extensive impact on China.

Compared with the same period of last year, the dust intensity in spring is obviously weak. The frequency of sandstorm weather in China is decreasing year by year. According to the data of China Meteorological Bureau, from 2000 to 20 16, the number of dust days appeared from the west to the cave, and gradually decreased from the north, with the highest dust in the southern Xinjiang basin, followed by the western Hetao area of Gansu in western Inner Mongolia.

Zhang analyzed that objectively, in the past ten years, due to the interaction of human governance and climate factors, the local environment in Shaanxi has been improved. In terms of humanities, China invested in national governance projects such as "Three-leaf Shelterbelt" and capital governance in Beijing-Tianjin-Hebei region. In terms of climate factors, with the global warming, the climate in China has also undergone significant changes. The number of days in the north of China is decreasing, which is also the most important reason to reduce the dust weather.