What is the effect of sandstorm source control in Beijing and Tianjin?

The Beijing-Tianjin sandstorm source control project is a key ecological project based on the particularity of Beijing's location and the urgency of improving the ecology around the capital, which mainly solves the problem of sandstorm hazards around the capital.

The sandstorm source control project in Beijing and Tianjin mainly realizes the project objectives by implementing measures such as returning farmland to forests, forbidding grazing in houses, stopping grazing in rotation, and ecological migration.

The construction of sandstorm source control project in Beijing and Tianjin has effectively improved the ecological situation in the capital and surrounding areas. According to the monitoring, at the end of 2003, the areas of desertified land, desertified cultivated land and desertified grassland in 19 sample counties (towns) decreased by 436,900 hectares, 265,400 hectares and 82,800 hectares respectively compared with 2000, and the four-year reduction rates were 16.08%, 26.77% and 5.05% respectively. The number of towns and villages affected by sandstorms decreased from 259 in 2000 to 227 in 2003, and the number of farmers and herdsmen affected by sandstorms decreased from 2,960,300 in 2000 to 2,787,200 in 2003.

Since the implementation of the project, the coverage rate of forest and grass vegetation in the project area has increased by about 20% compared with that in 2000, and the overall ecological situation has begun to improve, with obvious improvement in some areas; The trend of land desertification has been initially curbed, the dusty weather has been reduced year by year, and the inhalable particulate matter in Beijing has decreased by 7.8%. Sediment erosion has been improved, and the sediment discharge of Miyun Reservoir has decreased by 654.38+10,000 tons in recent four years.