采煤塌陷区土壤磷赋存形态及其释放规律
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摘要
[目的]对采煤塌陷区土壤中磷赋存形态以及释放规律进行研究,了解土壤磷污染特征。[方法]以淮南矿区潘一矿塌陷区为研究对象,应用分级提取的方法对塌陷区土壤中磷的赋存形态进行分析测定,采用室内柱状样模拟实验对土壤中磷释放特征进行研究。[结果](1)潘一杨庄塌陷区土壤TP的含量在103.58~489.89 mg/kg之间,平均值为248.47 mg/kg;(2)活性磷(BAP)的含量在86.94~378.24mg/kg,占TP含量的43.53%~91.12%,平均为71.1%。(3)TP累计释放量大小依次为:pH=12>pH=3>pH=6>pH=8>pH=10>pH=4。[结论]采煤塌陷区土壤中TP有极高的释磷潜力;不同pH值条件下,磷的释放强度大小为:碱性>酸性>中性。
[Objective]This paper mainly studied the phosphorus speciation and release law in the soil of coal mining subsided area,to know the phosphorus pollution characteristics.[Methods]Phosphorus content and fractions in the soil of NO.1Panji subsided area were analyzed using sequential extraction method,and the release characteristics of phosphorus in the soil were studied using the columnar sample simulation experiment.[Results](1)Total phosphorus(TP)content in the soil varied from 103.58mg/kg to 489.89mg/kg,and the average content was 248.47mg/kg;(2)Bioavailable phosphorus(BAP)content varied from 86.94mg/kg to 378.24mg/kg,accounting for 43.53%~91.12% of TP;(3)The cumulative release quantity of TP was in the following order:pH=12>pH=3>pH=6>pH=8>pH=10>pH=4.[Conclusion]High potentiality of phosphorus release had been discovered by the research of soil in coal mining subsided area.In different pH conditions,the releasing strength of phosphorus was ranked as:alkaline>acid>neutral.
[Objective]This paper mainly studied the phosphorus speciation and release law in the soil of coal mining subsided area,to know the phosphorus pollution characteristics.[Methods]Phosphorus content and fractions in the soil of NO.1Panji subsided area were analyzed using sequential extraction method,and the release characteristics of phosphorus in the soil were studied using the columnar sample simulation experiment.[Results](1)Total phosphorus(TP)content in the soil varied from 103.58mg/kg to 489.89mg/kg,and the average content was 248.47mg/kg;(2)Bioavailable phosphorus(BAP)content varied from 86.94mg/kg to 378.24mg/kg,accounting for 43.53%~91.12% of TP;(3)The cumulative release quantity of TP was in the following order:pH=12>pH=3>pH=6>pH=8>pH=10>pH=4.[Conclusion]High potentiality of phosphorus release had been discovered by the research of soil in coal mining subsided area.In different pH conditions,the releasing strength of phosphorus was ranked as:alkaline>acid>neutral.
引文
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[9]陈如海,詹良通,陈云敏,等.西溪湿地底泥氮,磷和有机质含量竖向分布规律[J].中国环境科学,2010(4):493-498.
[10]Wu Qunhe,Zhang R,Huang Shan,et al.Effects of bacteria on nitrogen and phosphorus release from river sediment[J].Journal of Environmental Sciences,2008,20(4):404-412.
[11]袁和忠,沈吉,刘恩峰.太湖不同湖区沉积物磷形态变化分析[J].中国环境科学,2010(11):1522-1528.
[12]俞海防,高良敏,李玉,等.淮南潘三采煤塌陷区土壤的养分分布特征[J].贵州农业科学,2013,40(12):143-145.
[13]沈仁芳,蒋柏藩.石灰性土壤无机磷的形态分布及其有效性[J].土壤学报,1992,29(1):80-86.
[14]Slomp C P,Malschaert J F P,Van Raaphorst W.The role of adsorption in sediment-water exchange of phosphate in North Sea continental margin sediments[J].Limnology and Oceanography,1998,43(5):832-846.
[2]张彬,方芳,陈猷鹏,等.三峡水库消落区土壤理化特征及磷赋存形态研究[J].环境科学学报,2012,32(3):713-720.
[3]孟庆俊.采煤塌陷地氮磷流失规律研究[D].江苏徐州:中国矿业大学,2010.
[4]舒凤月,刘玉配,赵颖,等.南四湖水体氮,磷营养盐时空分布特征及营养状态评价[J].环境科学,2012,33(11):3748-3752.
[5]朱广伟,秦伯强,高光,等.长江中下游浅水湖泊沉积物中磷的形态及其与水相磷的关系[J].环境科学学报,2004,24(3):381-388.
[6]彭杜,刘凌,胡进宝.玄武湖沉积物磷形态的垂向变化和生物有效性[J].水资源保护,2009,25(1):31-35.
[7]高振美,张波,商景阁,等.太湖流域小型水源性湖泊氮,磷时空分布及营养状态评价[J].环境污染与防治,2012,34(1):9-14.
[8]张路,范成新,朱广伟,等.长江中下游湖泊沉积物生物可利用磷分布特征[J].湖泊科学,2006,18(1):36-42.
[9]陈如海,詹良通,陈云敏,等.西溪湿地底泥氮,磷和有机质含量竖向分布规律[J].中国环境科学,2010(4):493-498.
[10]Wu Qunhe,Zhang R,Huang Shan,et al.Effects of bacteria on nitrogen and phosphorus release from river sediment[J].Journal of Environmental Sciences,2008,20(4):404-412.
[11]袁和忠,沈吉,刘恩峰.太湖不同湖区沉积物磷形态变化分析[J].中国环境科学,2010(11):1522-1528.
[12]俞海防,高良敏,李玉,等.淮南潘三采煤塌陷区土壤的养分分布特征[J].贵州农业科学,2013,40(12):143-145.
[13]沈仁芳,蒋柏藩.石灰性土壤无机磷的形态分布及其有效性[J].土壤学报,1992,29(1):80-86.
[14]Slomp C P,Malschaert J F P,Van Raaphorst W.The role of adsorption in sediment-water exchange of phosphate in North Sea continental margin sediments[J].Limnology and Oceanography,1998,43(5):832-846.