| 兰州市主城区土壤重金属空间分布特征及污染评价 |
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| 引用本文： | 赵翠翠,南忠仁,王胜利,曾静静,刘姣,晋王强.兰州市主城区土壤重金属空间分布特征及污染评价[J].城市环境与城市生态,2010,23(3):5-8. |
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| 作者姓名： | 赵翠翠 南忠仁 王胜利 曾静静 刘姣 晋王强 |
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| 作者单位： | 兰州大学资源环境学院,兰州,730000;兰州大学资源环境学院,兰州,730000;兰州大学资源环境学院,兰州,730000;兰州大学资源环境学院,兰州,730000;兰州大学资源环境学院,兰州,730000;兰州大学资源环境学院,兰州,730000 |
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| 基金项目： | 国家环境保护公益性项目(NEPCP200809098); 兰州大学中央高校基本科研业务费专项资金(lzujbky-2009-65) |
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| 摘 要： | 为查明兰州市4个主要城区土壤重金属Cu、Zn、Pb的空间分布特征和环境质量状况,应用Kriging最优内插法和地累积指数法进行研究,结果表明：Cu、Zn、Pb在研究区土壤中有一定程度的累积;3种重金属含量的空间变异较大,最高值均出现在西固区;大部分区域土壤Cu含量低于背景值,大部分区域土壤Zn、Pb均大于背景值,其中Pb在城关区土壤含量普遍较高。根据地累积指数法,Cu、Pb的大部分及Zn的全部样点都在轻污染-中污染及以下水平;土壤Cu的0级样点占50%以上,但在西固区有1个强污染样点;Zn和Pb样点主要在1级水平,Zn在七里河区污染程度相对严重;城关区土壤均受到不同程度的Pb污染;安宁区土壤环境质量相对较好。
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| 关 键 词： | 城市土壤 重金属 空间分布 污染评价 |
Spatial Distribution and Pollution Assessment of Heavy Metals in Soil of Main Districts of Lanzhou City |
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| ZHAO Cui-cui,NAN Zhong-ren,WANG Sheng-li,ZENG Jing-jing,LIU Jiao,JIN Wang-qiang.Spatial Distribution and Pollution Assessment of Heavy Metals in Soil of Main Districts of Lanzhou City[J].Urban Environment & Urban Ecology,2010,23(3):5-8. |
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| Authors: | ZHAO Cui-cui NAN Zhong-ren WANG Sheng-li ZENG Jing-jing LIU Jiao JIN Wang-qiang |
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| Institution: | ZHAO Cui-cui,NAN Zhong-ren,WANG Sheng-li,ZENG Jing-jing,LIU Jiao,JIN Wang-qiang(College of Resources and Environment,Lanzhou University,Lanzhou 730000,China) |
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| Abstract: | The Kriging method was used to estimate the unobserved points and generate contour maps of Cu,Zn,Pb,and the polluting status were assessed by adopting Igeo method in the study area.The results indicated that Cu,Zn,Pb were accumulated to some extent and the spatial distribution of them variated greatly.The high concentration part of Cu was found mainly in Xigu District and the concentrations of Cu were lower than its background level in a large scale and that of Zn and Pb were higher than their background le... |
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| Keywords: | urban soil heavy metal spatial distribution pollution assessment |
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