Why has it been raining heavily all over the country recently?

The reasons for the extensive rainfall in China are as follows:

Natural reasons are mainly due to the influence of climate, topography, characteristics of water system, river characteristics and basin characteristics. The occurrence of rainstorm is mainly influenced by atmospheric circulation, weather and climate system, and it is a natural phenomenon. Weather and climate factors are the direct cause of heavy rain. When a rainstorm occurs, the geographical environment becomes an important factor affecting the occurrence of disasters. Geographical environment includes topography, landform, geographical location and river distribution. Increased precipitation and slower drainage speed are more likely to induce floods.

Man-made reasons mainly include: destroying forest vegetation and causing soil erosion. Forests have good water storage function. On the one hand, forests can intercept precipitation; On the other hand, forests have high soil permeability and good water storage capacity.