煤矿区土壤有机碳含量测算与影响因素研究进展

研究矿区土壤有机碳的储量、影响因素以及时空变异规律,不仅对认识矿区土壤质量变化规律,而且对排土场覆土工艺和植被类型的选择具有重要的指导意义。植被、土壤质量等自然因素以及复垦管理措施、复垦模式等人为干扰会对矿区土壤有机碳的积累和转化造成重要影响。目前,对于矿区土壤有机碳的变化过程和转化机理的研究不够深入,尤其是土壤有机碳对复垦措施的响应规律鲜见报道。本文系统梳理了国内外学者对矿区土壤样品有机碳含量的测量和区域土壤有机碳储量的估算,自然因素、人为干扰对矿区土壤有机碳积累的影响。在此基础上,提出了深入研究的方向:1加强矿区土壤有机碳剖面结构的变化及其转化机制的研究;2加强对影响土壤有机碳积累的不确定因素的探讨研究;3应加强复垦模式及覆土工艺以及排土场微地形对土壤有机碳积累机理的研究。

Progress on Measurement and Factors of Soil Organic Carbon in Mineral Area

Study the reservation, factors and temporal variation of soil organic carbon (SOC) in mineral area can not only understand the variation of soil quality, but also guide mine reclamation in the selection of overburden and vegetation. Climate, vegetation, soil texture and other natural factors, land use patterns, management practices and other human disturbances have effects on SOC accumulation and transformation. Currently, the study on SOC change process and transformation mechanism in mineral area are not enough, especially in the response law of SOC to the reclamation measures. This paper systematically summarized the study progresses of domestic and foreign scholars on the measurement of SOC in mine area and on the estimation of the regional SOC reservation, the influences of natural factors and human interference on SOC accumulation in the mine area. On the above bases, further research directions were proposed: 1) on the change and transformation mechanism of SOC in profile structure; 2) on uncertain influential factors of SOC accmulation; 3) on effects of reclamation modes, covering techniques, and microtopography on SOC accumulation mechanism.