The Change Law of RMSs Characteristics in Grassland Opencast Coal Mine Dump of China

Abstract:

With construction and development of opencast coal mine, its damage to the land resources and ecological environment in mine area become increasingly serious. Thus, assessing change law of reclaimed mine soils is essential for land reclamation and ecological restoration in ecological fragile area. Is this study, soil Bulk Density, Organic matter, Available P, Available K, Alkali-hydrolyzed N, Total N, pH value, Electrical Conductivity was analyzed in different sampling sites with different reclamation age and an unmined site as a reference in Inner Mongolia mining waste dump. The soil Organic matter, Available P, Available K, Alkali-hydrolyzed N and Total N increased with reclamation age, all the soil factors gradually arrived at their content in original landform. A model of RMSs characteristics was constructed using index sum method. RMSs characteristics had been improved in study area, and gradually arrived at the original landform level.

• Periodical: Advanced Materials Research (Volumes 726-731)
• Pages: 4831-4837
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.726-731.4831
• Online since: August 2013
• Authors: Rui Xuan Yang, Jin Man Wang
• Keywords: Change Law, Land Reclamation, Soil Characteristics, Waste Dump

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