焦作韩王矿塌陷区土壤质量变化规律

矿区煤炭开采引起的地表塌陷是土壤质量变化的一个主要原因。本文通过对焦作韩王矿塌陷区的土壤理化、生物特性进行研究，结果表明：（1）随着土壤深度的加深,含水量、有机质含量减小，容重、pH增大；自塌陷坡上坡而下到塌陷盆地中心，含水量依次增大，下坡位置容重和有机质含量最高。（2）塌陷区普遍受到重金属Cu、Pb、Zn、Cd的严重污染。（3）自塌陷坡上坡而下到塌陷盆地中心，不同微生物表现出不同的规律；土壤垂向变化方面，微生物表现出来的规律一致。

The Laws of Quality Variability on Soil in Subsidence Area of Hanwang Mined Land, Jiaozuo

A large amount of land has subsidized owing to exploiting the coal resource,which is main cause of variability of soil quality in mined land. Based on research on the properties of soil physical,chemical and biological properties in subsidence of Hanwang mined land,the results show that moisture content and content of organic matters get lower, but bulk density and pH become higher with the soil depth augmenting,that moisture content become higher from the top of subsidence slope to the center of subsidence basin and bulk density and content of organic matters are the highest at the below of subsidence slope. It also shows that the soil of mined land has been polluted by the heavy metal Cu,Pb,Zn,Cd;that different kinds of microorganism display different law from the top to the center of subsidence basin,however, they display the same law on the vertical variation of soil.