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Quality of Soils on Reclaimed Land from a Coal Mining Area
Abstract:
Paper provides the results of research to determine the optimum technique of soil quality analysis in reclaimed land areas. The method involves topsoil stripping and mixed replacement techniques. The soils are sampled in different years after placement. Soil properties were analyzed. The data comes from the Wu-yang mine, Shanxi Province, China. Research has resulted in four conclusions: i) by topsoil stripping, soil fertility is nearly the same as the original soil, soil nutrients are higher in the tilth layer than in the bottom soil, and there is an upward tendency. ii) by mixed pushing, soil fertility is low and heterogeneous and needs to improve fertility. iii) changes of soil heavy metal concentrations are affected by dust and sewage and have little connection with reclaimed techniques and years after reclamation. iv) reclamation by topsoil stripping is better in the plain areas. Paper discusses how to choose the best reclamation technique and decide on the recovery time of land fertility.
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2974-2979
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Online since:
December 2012
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© 2013 Trans Tech Publications Ltd. All Rights Reserved
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