本文以平原高潜水位地区徐州与淮北煤矿沉陷地为例 ,研究了采煤沉陷地土壤性质变化的空间分布规律。研究结果揭示 ,开采沉陷显著影响耕地表层土壤的性质 ;沉陷地土壤容重增大 ,土壤受到压缩 ;土壤有机质、速效养分和土壤微生物量的变化与坡地上的土壤侵蚀和沉陷地下部积水有关 ,并受沉陷稳定时间长短影响 ,一般以沉陷地中坡土壤有机质与养分流失量大。在沉陷地部分坡位有积盐现象 Taking the subsidence of Xuzhou and Huaibei coal mines in the high-lying plain of the plain as an example, the spatial distribution of soil properties in mining subsidence was studied. The results show that the mining subsidence significantly affects the properties of the topsoil; the soil bulk density of the subsidence increases and the soil is compressed; the changes of soil organic matter, available nutrients and soil microbial biomass are related to the soil erosion on sloping land and the groundwater in the subsidence area, And is affected by the length of settlement stabilization time. Generally, the amount of soil organic matter and nutrient loss in the mid-subsidence area is large. Slope in the subsidence have salt phenomenon