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Study on Soil Nutrients and Organic Carbon in the Soil Reclamed for Different Years

DING Qing-po et al (Shenyang Agricultural University,Shenyang,Liaoning 110161)  
Through sampling from different years and depth reclaimed areas in Fushun coal mine,we found pH value in the soil of reclaimed reduced year by year and the range of variation of pH was between 6.47~7.80.The entire nitrogen,the effective phosphorus,the alkaline hydrolysis nitrogen and so on present the increasing tendency year by year in the mine soil.The total organic carbon content was high.With the increase of soil depth,the effective phosphorus,the nitrogen and so on reduced gradually.As the human influence on the soils was increased,the concentrations of black carbon soil and particulate organic carbon tended to be decreased and the active carbon tended to be increased.
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