不同复垦方式对黑岱沟露天矿排土场土壤有机碳的影响  

Soil organic carbon content of the spoiled bank under different reclamation modes,Heidaigou open pit,Inner Mongolia

作　　者：王同智[1,2] 薛焱[3] 包玉英[1] 齐云龙[1] 屈永安[1] 董明月[1] 

机构地区：[1]内蒙古大学生命科学学院,呼和浩特010021 [2]内蒙古煤炭建设生态环境研究院,呼和浩特010021 [3]内蒙古科技大学包头医学院,内蒙古包头014060

出　　处：《安全与环境学报》2014年第2期174-178,共5页Journal of Safety and Environment

基　　金：国家科技支撑计划项目(2012BAC10B03-5);内蒙古科技计划项目(20110514;20100509)

摘　　要：采用样方对角线混合法采集土壤样品,用圆锥四分法分样,测定土壤有机碳及相关土壤因子理化性质,用单因素方差法比较不同排土场各土壤因子的差异性,用主成分分析法(PCA)分析了土壤有机质与土壤因子、复垦方式、复垦年限间的关系。结果表明:1)影响排土场土壤环境的第1主成分为复垦管理相关因子,贡献率为71.43%,第2主成分为排土工艺相关因子,贡献率为12.10%;2)排土场土壤有机质与土壤水分、土壤孔隙度、复垦方式和复垦年限呈正相关,与土壤容重、土壤黏粒含量和土壤pH值呈负相关;3)相同复垦年限时,油松(Pinus tabulaeformis Carr.)+蒙古冰草(Agropyron mongolicum Keng)组合较新疆杨(Populus alba var.pyramidalis Bunge)+紫花苜蓿(Medicago sativa L.)复垦模式有利于土壤有机碳积累,但复垦14 a土壤有机碳含量最高的排土场尚未达到对照CK样地土壤有机碳水平。人工维系促建林地生态系统土壤环境尚不稳定。The present article is aimed at investigating the influence of different reclamation modes on the organic carbon content and other physicochemical properties of the spoiled bank and the accumulation of the ecological restoration acknowledged data. In this article, first of all, we have chosen 432 soil samples by way of coning and quartering from the different spoiled banks and different soil layers. And, then, we have determined the soil organic carbon content and other soil physicochemical properties through careful selection and comparison of the differences of the soil organic carbon content and other soil factors in the different spoil banks with the single factor variance method, the relationship between the soil organic matter and soil factors,as well as different vegetation restoration patterns. Besides, we have analyzed the reclamation years through the principal component analysis. And, finally, the results of our experiments and investigation demonstrate that, （1） The first principal component is reclamation management factor affecting the soil environment, whose contribution rate accounts for 71.43%, whereas the second principal component is dumping technology related factor, whose contribution rate accounts for merely 12.10%; （2）The soil organic matter has been found positively correlated with the soil moisture and porosity, the different vegetation restoration patterns, and reclamation years, though the soil organic matter is negatively correlated with the soil density, clay content of soil and the pH value; （3） The combined mode of the Pinus tabulaeformis Carr. and Agropyron mongolicum Keng turn out to be more advantageous for accumulating the soil organic carbon than that of Populus alba var. pyramidalis Bunge and Medicago sativa L. in the same reclamation year, though the soil＇s organic carbon content of all the rehabilitation for over burden dumps for 14 years remains lower than CK site. In the same reclamation vegetation, the soil＇s organic carbon content of rehabilitation for ov

关 键 词：生态工程学 复垦方式 生态恢复 露天矿排土场 土壤因子 

分 类 号：Q948.123[生物学—植物学]