The hazards and prevention of sandstorm activities

The hazards and prevention of sandstorm activities are as follows:

The hazards of sandstorm activities:

1. Cause economic losses: many villages, railways, highways, reservoirs and irrigation canals Waiting for the threat of wind and sand.

2. Loss of a large amount of land: China’s desertification area is 2.67 million square kilometers, accounting for about 28% of the land area.

3. Serious ecological problems: the topsoil is exposed, providing sufficient sand sources for the formation of sandstorms.

4. Cause famine: the productivity of organisms continues to decline, and the production of food and pasture is reduced or even eliminated.

Prevention and control measures for sandstorm disasters:

1. Engineering measures:

(1) Sand blocking: Set up sand barriers to block sandstorms.

(2) Sand fixation: Set up grass (stone) squares to fix the sand surface.

2. Biological measures:

(1) Carry out ecological construction according to local conditions, protect and restore vegetation (protect natural vegetation, plant trees, plant grass, etc.), prevent wind and sand fixation.

(2) Make rational use of water resources and ensure ecological water use.

3. Organizational and management measures:

(1) Adjust the agricultural structure and reasonably control the scale of agricultural and animal husbandry production.

(2) Strengthen publicity and education and improve environmental awareness.

(3) Establish a monitoring and forecasting mechanism for sandstorm disasters.

(4) Formulate and strictly implement relevant laws and regulations for desertification prevention and control.

(5) Implement ecological migration in areas seriously affected by sandstorms.

The formation conditions and main hazards of sandstorms:

The formation conditions of sandstorms:

1. Sand and dust materials on the ground. It is the material basis for the formation of sandstorms. The desertified land in northwest my country is the main source of sand and dust storms.

2. Strong wind. This is the power basis for the formation of sandstorms and the power guarantee for sandstorms to be transported over long distances.

3. Unstable air conditions. This is an important local thermal condition.

Sandstorms mostly occur in the afternoon and evening, indicating the importance of local thermal conditions.

The main hazards of sandstorms:

1. Strong wind.

Strong winds carrying fine sand and dust destroyed buildings and public facilities, causing casualties to humans and animals.

2. Buried in sand.

Farmland, channels, cottages, railways, pastures, etc. are buried by a large amount of sand due to wind and sand flow, especially posing a serious threat to transportation.

3. Soil wind erosion.

The dust source and affected areas of each sandstorm will be harmed by wind erosion to varying degrees, causing serious damage to the land productivity of farmland and pasture in the area.

4. Air pollution.

In sandstorm source areas and affected areas, respirable particulate matter in the atmosphere increases, air pollution intensifies, endangers human health, and reduces atmospheric visibility, affecting traffic.