淮南市大通矿区煤矸石充填复垦地修复效果研究

为研究废弃矿区煤矸石充填复垦地复垦效果,选取淮南市大通废弃矿区复垦地为研究试验区,对大通矿区复垦地及周边未塌陷地土壤理化性征开展研究,同时分析两地自然生长的一年蓬、葎草、蒺藜、苘麻4种苗木叶片中叶绿素总量、可溶性蛋白质、脯氨酸、过氧化氢酶含量的差异,运用主成分分析法对各植物生长状况进行综合、定量评价。结果表明:大通矿区复垦地区和未塌陷地土壤容重、含水量、微量、中量元素差异较大;大通复垦区与未塌陷地土壤有机质皆处于6级水平;大通复垦区速效氮、速效磷含量处于6级水平,速效钾含量处于5级水平;未塌陷地速效氮含量处于5级水平,速效磷、速效钾处于4级水平;由植物生长主成分得分可知,未塌陷地区葎草、蒺藜、苘麻生长状况皆好于复垦区,未塌陷地一年蓬生长位次低于复垦区一年蓬生长位次。

Study on the Remediation Effect of Coal Gangue Filling Reclamation in Datong Mining Area,Huainan

In order to study the reclamation effect of coal gangue filling and reclamation land in abandoned mining area, the reclamation land of Datong abandoned mining area in Huainan City was selected as the test area,and the soil physical and chemical characteristics of the reclaimed land and the surrounding unconventional land in Datong mining area were studied. The contents of total chlorophyll,soluble protein,proline and catalase in leaves of four kinds of seedlings including erigeron an-nus,humulus,tribulus terrestris and abutilon were studied,and the growth status of each plant was comprehensively and quanti-tatively analyzed by principal component analysis (MA). The results showed that soil bulk density,water content,trace and medium elements were different in the reclaimed land and non-subsided areas of Datong mining area,and the soil organic mat-ter in Datong reclamation area and non-subsidence land were all at level 6. The available nitrogen and available phosphorus in Datong reclamation area was at level 6,and the available nitrogen content was at level 5;The available nitrogen content in non-subside area was at level 5,and the available phosphorus and available potassium were at level 4;The growth condition of hu-mulus,tribulus terrestris and abutilon in the non-subsided area is better than that of the reclaimed area,while the growth posi-tion of erigeron annus in the non-subsided area is lower than that in the reclaimed area.