山东农业大学学报（自然科学版）2018，Vol.49Issue(1)：117-123,7.DOI:10.3969/j.issn.1000-2324.2018.01.023
不同充填复垦方式下土壤有机碳的空间分布特征
Spatial Distribution Characteristics of Soil Organic Carbon Under Different Reclamation Modes
摘要
Abstract
In this paper,the effects of different filling materials on soil organic carbon(SOC)and soil organic carbon density (SOCD)spatial distribution were studied by taking the reclamation area of Jinan coal mine as the research object.Through stratified sampling and laboratory analysis,the reclaimed land of filling materials such as the sand of Yellow River(M1),the lake mud(M2),the gangue(M3),the coal ash(M4)and the foreign soil(M5)were collected and analyzed in laboratory.The factors influencing the distribution of SOC and SOCD in filling and reclaimed soil were found out.The results showed:(1) The SOC content of 5 reclaimed soil was between 4.19~11.29 g·kg-1and SOCD between 3.41~10.09 kg·m-2.Compared with control cultivated land,the SOC content in the five reclaimed soils was significantly lower(P<0.05).In addition to the SOCD of M2b and M5 was greater than or equal to the control cultivated land,the SOCD of other reclaimed soils was less than that of the control cultivated land.(2)The SOC and SOCD of reclaimed soil are clustered at the surface layer.With the increase of soil depth,except for M4b,the SOC and SOCD of the reclamation soil decreased gradually.(3)From the recovery effect, different filling materials had a certain effect on the distribution of SOC and SOCD in the 0-60 cm soil layer, and the recovery effect of five fillings on organic carbon from good to bad is:M2>M5>M1>M4>M3.Conclusion:The filling material of the filling layer will affect the total value of SOC and SOCD in the 0~60 cm soil layer,but it will not affect the profile distribution. SOC and SOCD are positively correlated with alkaline nitrogen, effective phosphorus and rapid potassium in different soil depth(0~20 cm,20~40 cm and 40~60 cm),therefore,the soil nutrient status of soil covered with reclaimed soil will affect the soil profile distribution of SOC and SOCD.关键词
复垦土壤/充填材料/土壤有机碳/空间分布Key words
Reclaimed soil/filling material/soil organic carbon/the spatial distribution分类
矿业与冶金引用本文复制引用
李奇超,李新举..不同充填复垦方式下土壤有机碳的空间分布特征[J].山东农业大学学报（自然科学版）,2018,49(1):117-123,7.基金项目
国家自然基金(41771324) （41771324）
