| 多重分形方法识别铜陵矿区土壤中Cd的地球化学异常 |
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| 引用本文： | 白晓宇,袁峰,周涛发,李湘凌,张鑫,范裕,陈兴仁,陈永宁,陈富荣.多重分形方法识别铜陵矿区土壤中Cd的地球化学异常[J].矿物岩石地球化学通报,2008,27(3). |
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| 作者姓名： | 白晓宇 袁峰 周涛发 李湘凌 张鑫 范裕 陈兴仁 陈永宁 陈富荣 |
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| 作者单位： | 1. 合肥工业大学,资源与环境工程学院,合肥,230009
2. 安徽省地质调查院,合肥,230001 |
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| 基金项目： | 安徽省科技攻关项目，安徽省优秀青年科技基金，中国地质调查局科研项目 |
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| 摘 要： | 土壤元素异常下限值的确定对环境地球化学评价具有重要意义。传统异常下限值计算方法仅适用于元素含量数据呈正态分布的情况，而事实上土壤元素含量的空间分布极其复杂，很可能具有多重分形分布特征。本文利用校正累积频率分形方法确定铜陵矿区土壤中Cd的异常下限值为1．687mg／kg。并据此圈定了异常范围。与传统方法所确定的异常下限值及相应异常区域对比，分形方法圈定的异常区域范围更广，更为合理、有效。
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| 关 键 词： | 分形 Cd元素 异常 土壤 铜陵 |
The Determination of Geochemical Abnormity of Soil Cd in Tongling Mining Area Using Multifractal Method |
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| BAI Xiao-yu,YUAN Feng,ZHOU Tao-fa,LI Xiang-ling,ZHANG Xin,FAN Yu,CHEN Xing-ren,CHEN Yong-ning,CHEN Fu-rong.The Determination of Geochemical Abnormity of Soil Cd in Tongling Mining Area Using Multifractal Method[J].Bulletin of Mineralogy Petrology and Geochemistry,2008,27(3). |
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| Authors: | BAI Xiao-yu YUAN Feng ZHOU Tao-fa LI Xiang-ling ZHANG Xin FAN Yu CHEN Xing-ren CHEN Yong-ning CHEN Fu-rong |
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| Abstract: | It is significant to determinate the thresholds of elements in soils for geochemical evaluation of environment,and the traditional way of determining thresholds is only suitable for the elements data that is extremely complicated.Nevertheless,the spatial distributions of the elements are very complicated,possibly are multifractal distribution.This paper uses fractal method of Area-calibrated Accumulative-frequency mode to determinate the thresholds of Cd element in soil of Tongling mining area,and result is 1.687 mg kg-1.Comparing the results by traditional method,the anomaly extension made by fractal method covers larger polluting area and is more effective and reasonable. |
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| Keywords: | fractal Cd element abnormity soil Tongling |
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