By laboratory leaching experiments with the red soil from Zhejiang province

the effects of acid rain on aggregate and its cemedins of the red soil were studied. The results show that acid rain reduces the stability of red soil aggregate

increase its rate of structure destruction

decreases organic matter contain

and enhances activity of ferric oxide. These effects become more serious as falling of pH value and lasting of leaching time. The stability and structure of soil aggregate getting bad

which can accelerate soil erosion

shows that acid rain has soil erodibility.