What are the characteristics of the geographical distribution of major natural disasters in China? W

1) There are many types: among the natural disasters in China, the most important ones are meteorological and climatic disasters, followed by geological and geomorphological disasters. Among them, floods, droughts and ** are the most harmful.

2) High frequency: higher than the average frequency of countries around the world.

3) Wide range of distribution:

Northwest China, Loess Plateau and North China – drought in spring and autumn;

The eastern monsoon region is concentrated in the seven major river basins - heavy rains and floods in summer;

Northeast and South-West forest areas – forest fires in winter and spring;

Active tectonic belts in the southwest, northwest and north China—**;

Qinghai-Tibet Plateau - Low temperature freeze injury and ice and snow disasters;

Southeast Coastal Area – Typhoon, Storm Surge.

4) Large regional differences:

Eastern Natural Disaster Zone: North China, Coastal Areas, Jianghuai Region (Central China), Northeast China.

The central natural disaster area - the northern agro-pastoral ecotone, the southwest region, and the Guizhou Plateau region (the area bordering Hunan, Guizhou, Guizhou, and Sichuan).

Western Natural Disaster Zone: Northwest River Valley and Piedmont Oasis Region, Southern Tibet Valley, Inner Mongolia Plateau, Northern Tibet Plateau.

Distribution of natural disasters in our country:

1) Coastal hazard zone:

Many typhoons, storm surges, heavy rains, floods, droughts, seawater intrusion, ** and other natural disasters.

2) Disaster zone along the river: natural disasters such as heavy rainfall, drought, soil erosion, landslides, and debris flows.

Droughts and floods: most frequent in the downstream, followed by the middle and least upstream.

Landslide and debris flow disasters: The upstream area is one of the areas with the most concentrated distribution of landslides and debris flow disasters along the river, and the most serious hazards.

Reasons for many natural disasters along the river:

One is the sharp decline in forest area; The second is the development of urbanization and industrialization.

3) Piedmont Disaster Zone:

Natural disasters such as mudslides, landslides and hailstorms.

The relationship between two pairs: 1. The relationship between the degree of natural disasters and the number of people

The severity of natural disasters is directly related to the size of the population; China's population is concentrated in the east, so that the disaster-stricken population is mainly concentrated in the east.

2. The relationship between the disaster-stricken area of crops and the sown area

There is a direct relationship between the area of crop damage and the sown area. China's cultivated land is concentrated in the east, and the types of disasters that affect agriculture are also concentrated in the east, making the agricultural disaster particularly serious.

From the distribution of locust temples, we can see the geographical characteristics of locust plagues in Chinese history.

The most common natural disasters in China with a wide range of hazards are drought and flood.

b、**。c. Typhoon.

d. Cold wave. Answer: a

Drought and flood are the most widespread natural disasters in our country.

Drought and flood disasters have a wide range of impacts.

The most common and widespread are: floods, droughts.

Characteristics of natural disasters in China 1 Diverse types of disasters and frequent disasters 2 Serious disaster losses in the affected population and agriculture 3 Significant regional differences in natural disasters.

Meteorological disasters generally include weather and climate disasters and meteorological secondary and derivative disasters.

Weather and climate disasters refer to disasters directly caused by typhoons (tropical storms, severe tropical storms), heavy rain (snow), thunderstorms, hail, strong winds, sand and dust, tornadoes, large (thick) fog, high temperatures, low temperatures, even rain, freezing rain, frost, ice formation, cold waves, droughts, hot and dry winds, heat waves, floods, and waterlogging.

Meteorological secondary and derivative disasters refer to disasters such as landslides, debris flows, storm surges, forest fires, acid rain, and air pollution caused by meteorological factors.

From the distribution of locust temples, we can see the geographical characteristics of locust plagues in Chinese history.

Our country is at the crossroads of two major natural disaster belts.

China is located at the junction of the Pacific plate and the Eurasian plate, and the crustal movement is strong.

The area of 2 3 in China is mountainous, and the landform types are complex and diverse.

The unstable monsoon climate, especially the strength of the high-pressure force in Hawaii and the speed of the position movement, have led to frequent alternating droughts and floods in different parts of China.

Typhoons in the east along the wild cracked sea, drought in the north and waterlogging in the south Loess Gaoyuan The Yellow River flows from low latitudes to high latitudes.