Study on the Influence of Slope Aspect in Coal Mining Subsidence Area on the Physical and Chemical Properties of Cultivated Soil
[Purposes]Topographic factors(slope position and slope direction)have a profound impact on soil properties.However,there are few studies on the micro-topographic conditions formed by coal min-ing subsidence,especially the influence of slope direction on soil properties,so it is necessary to study it.[Methods]Taking the typical plain coal mining subsidence area of Jiulishan Mine in Jiaozuo as the re-search area,the cultivated land soil was taken as the research object.Through field investigation and in-door analysis,the influence of slope direction on soil physical and chemical properties in subsidence area was studied.[Findings]The results showed that compared with the sunny slope,the soil water con-tent,electrical conductivity,organic matter content,total phosphorus content and sodium adsorption ratio of the shady slope in the coal mining subsidence area were relatively higher,while the soil pH was rela-tively lower.There were significant differences in soil water content,pH,electrical conductivity and total phosphorus content among different slope directions,and there was a significant correlation between the above indexes and slope direction(p<0.01).The effect of slope aspect on soil chemical indexes was stron-ger than that of slope position,and the effect of slope aspect and slope position on soil total phosphorus content had interaction.[Conclusions]The research results can provide a reference for exploring the causes of soil spatial heterogeneity in subsidence areas and the precise reclamation of land.
coal mining subsidence areaphysical and chemical propertiestopographical conditionsslope aspect
NETL
NSTL
万方数据
