Why is there more acid rain in the south than in the north?

1 The non-ferrous metallurgical industry in South China is developed, and a large amount of acid gas is emitted.

The soil in the south is acidic, so is the dust in the atmosphere.

Big cities in the south burn coal with high sulfur content.

The southern terrain is dominated by low mountains and hills, with low wind speed and difficult diffusion of acid gas.

Is it rainy in the south?

Extended data

Acid rain can lead to soil acidification.

There is a lot of aluminum hydroxide in the soil. After soil acidification, it can accelerate the weathering of primary and secondary minerals containing aluminum in the soil, release a lot of aluminum ions and form aluminum compounds that can be absorbed by plants. Long-term excessive absorption of aluminum by plants will lead to poisoning and even death.

Acid rain will also accelerate the loss of soil minerals and nutrients; Under the action of acid rain, nutrients such as potassium, sodium, calcium and magnesium in the soil will be lost and leached out with the rain. Therefore, long-term acid rain will leach out a lot of nutrients in the soil, resulting in a serious shortage of nutrients in the soil, thus making the soil barren.

Changing soil structure leads to poor soil and affects the normal development of plants. In addition, acid rain can release aluminum from stable state in soil, increase active aluminum and reduce organic complex aluminum. The increase of active aluminum in soil will seriously inhibit the growth of trees.

Acid rain can also induce plant diseases and insect pests, so that crops, especially wheat, will be greatly reduced. Under the influence of acid rain, the yield can be reduced by 13% to 34%. Soybeans and vegetables are also susceptible to acid rain, which leads to the decrease of protein content and yield.

The impact of acid rain on forests is largely caused by the deterioration of soil physical and chemical properties. ?

Acid rain will inhibit the reproduction of some soil microorganisms and reduce the activity of enzymes, and nitrogen-fixing bacteria, bacteria and actinomycetes in the soil will be obviously inhibited by acid rain.

Acid rain can dissolve hardened cement on the surface of nonmetallic building materials (concrete, mortar and lime-sand brick), produce cavities and cracks, reduce strength and damage buildings. Building materials become dirty and black, which affects the appearance and quality of urban landscape, and is called "black shell" effect.

References:

Baidu encyclopedia-acid rain