Why are all basins? Qaidam basin is rich in solar energy resources, while Sichuan basin is less.

(1) The Qaidam Basin has high altitude, thin air, good atmospheric transparency, less reflection on solar radiation, and strong solar radiation reaching the ground.

(2) The Qaidam Basin is the region with the richest light resources in China, with annual sunshine hours of 3,200-3,600 hours and annual total radiation of 7,000-8,000 MJ/m2.

(3) The weather in Qaidam Basin is clear, with many sunshine hours and strong solar radiation.

2. Sichuan Basin:

Sichuan is low-lying and surrounded by mountains. The basin is rich in vegetation, heavy rainfall, many rivers, abundant water flow, and water vapor permeates the air, which leads to more obstacles to fog and sunshine, so solar energy is poor.

Extended data:

Factors affecting solar energy resources:

1. Latitude affects the solar altitude angle, the amount of solar radiation energy received per unit area on the ground, and the distance through the atmosphere, which will all affect the weakening effect of the atmosphere. The sun's altitude angle is large, the atmosphere it passes through is thin, and the weakening effect of the atmosphere is small, so more solar radiation reaches the ground.

2. The weather is clear, the sunshine time is long, and there is much solar radiation.

3, the altitude is high, the atmosphere is thin, the atmospheric weakening effect is small, and the solar radiation reaching the ground is more.

4. Different seasons, different days and different solar altitude angles.