矿区机械压实对土壤孔隙特性影响的研究进展

Advance in the Study on the Effect of Mechanical Compaction on Soil Pore Characteristics in Mining Area

在矿区开采和复垦过程中大型机械的使用产生了土壤压实,并严重扰动了土壤内部结构,导致土壤孔隙数量减少,连通性和渗水能力下降,土壤孔隙作为土壤水气交换的重要场所决定着土壤水分和空气状况,进而影响复垦土壤质量与肥力。为探究矿区机械压实作用对土壤孔隙的影响,系统梳理了矿区机械压实作用下土壤孔隙的获取和表征方法,对农业机械压实相关研究进行了简单归纳,在此基础之上阐述了矿区机械压实对土壤孔隙影响的研究进展,总结了当前研究存在的问题,并提出今后在探究矿区机械压实对土壤孔隙特性影响时应创新压实土壤孔隙的定量表征方法,重视机械压实对土壤孔隙特性影响机理的考究,以期为改善矿区土地复垦效果提供理论指导。

In the process of mining and reclamation, the use of large machinery produced mechanical compaction and severe disturbance to soil internal structure. Mechanical compaction not only caused the decrease in the number of soil pores, but also resulted in the decline in the connectivity and permeability. However, as an important place for soil moisture exchange, soil pores determined soil moisture and air condition, and then affected the quality and fertility of reclamation soil. To explore the compaction effect on soil porosity, this paper analyzed the extraction and characterization methods of soil pores under the mechanical compaction in mining area. On this basis, this paper elaborated the progress about the effect of mechanical compaction on soil pores, summarized the problems of current research, and advanced the quantitative characterization method of compacted soil pores when exploring the effect of mechanical compaction on soil pore characteristics in the future. And further research should pay emphasis on the effect mechanism of mechanical compaction on soil pore characteristics in order to provide theoretical guidance for improving the effect of land reclamation in the mining area.