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Assessment of Seasonal and Site-Specific Variations in Soil Physical,Chemical and Biological Properties Around Opencast Coal Mines

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Pedosphere 2019年第5期29卷 642-655页

作者： bhanu pandey Arideep MUKHERJEE Madhoolika AGRAWAL Siddharth SINGH Laboratory of Air Pollution and Global Climate Change Department of BotanyBanaras Hindu UniversityVaranasi 221005 (India) Natural Resources and Environment Management Group Central Institute of Mining and Fuel Research (CSIR)Dhanbad 826 015 (India)

Coal mining adversely affects soil quality around opencast mines. Therefore, a study was conducted in 2010 and 2011 to assess seasonal and site-specific variations in physical, chemical, and biological properties of soil collected at different distances from mining areas in the Jharia coalfield, India. Throughout the year, the soil in sites near coal mines had a significantly higher bulk density, temperature, elec trical conductivity, and sulfate and heavy metal contents and a significantly lower water-holding capacity, porosity, moisture content, pH, and total nitrogen and available phosphorus contents, compared with the soil collected far from the mines. However, biological properties were site-specific and seasonal. Soil microbial biomass carbon (MBC) and nitrogen (MBN), MBC/MBN, and soil respiration were the highest during the rainy season and the lowest in summer, with the minimum values in the soil near coal mines. A soil quality index revealed a significant effect of heavy metal content on soil biological properties in the coal mining areas.

关键词： heavy metal microbial biomass mining area soil property soil quality index soil respiration

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