The impact of raindrops on the loose soil tends to transfer fine clay particles into the tiniest soil spaces, sealing them and producing a surface that allows very little water penetration.
A large industry bare area is formed in the downwind of smelter caused by metal smelting production, with feature ofsoilsealing, high content of heavy metal, utmost acidification and barren.
The medium material, sealingsoil in low contents of heavy metal and enlarged stipe strain were key to measure of approaching to lower contents of heavy metals in fruit body.