| 上海市城乡梯度上土壤重金属空间分布及其影响因素定量分析 |
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| 引用本文： | 方淑波,崔曲,庞慧焕,田壮,印春生,杨晓英.上海市城乡梯度上土壤重金属空间分布及其影响因素定量分析[J].环境科学学报,2015,35(12):3976-3984. |
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| 作者姓名： | 方淑波 崔曲 庞慧焕 田壮 印春生 杨晓英 |
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| 作者单位： | 1. 教育部水产种质资源开发利用实验室, 上海海洋大学, 上海 201306;2. 复旦大学环境科学与工程系, 上海 200433,教育部水产种质资源开发利用实验室, 上海海洋大学, 上海 201306,教育部水产种质资源开发利用实验室, 上海海洋大学, 上海 201306,教育部水产种质资源开发利用实验室, 上海海洋大学, 上海 201306,教育部水产种质资源开发利用实验室, 上海海洋大学, 上海 201306,复旦大学环境科学与工程系, 上海 200433 |
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| 基金项目： | 国家自然科学基金项目(No.41101172) |
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| 摘 要： | 提出了两种上海市城乡梯度上土壤重金属空间格局及影响因素的研究方法:缓冲区分析方法和滑动窗口分析方法.缓冲区分析的结果表明,人口变化指数及2~3 km范围内的建设用地比例能显著影响Cd和Cu的空间分布(p0.05),而3 km范围内的道路密度显著影响Pb的浓度.滑动窗口分析的结果表明,Cd和Cu主要受工业活动的影响,而Pb受交通流量,以及反映城市景观扩张过程的景观形状指数的影响.相关分析表明,两种方式揭示了较为相似的土壤重金属空间累积影响因素,即工业活动相关的城市化过程.研究对理解城市化的发生机制及其重金属环境风险的管理有重要意义.
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| 关 键 词： | 城乡梯度 景观变量 逐步线性回归 缓冲区分析 风险管理 |
| 收稿时间： | 2014/12/30 0:00:00 |
| 修稿时间： | 2015/2/11 0:00:00 |
Distribution and factor analysis of soil heavy metal by quantitative approaches on the urbanization gradient in Shanghai |
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| FANG Shubo,CUI Qu,PANG Huihuan,TIAN Zhuang,YIN Chunsheng and YANG Xiaoying.Distribution and factor analysis of soil heavy metal by quantitative approaches on the urbanization gradient in Shanghai[J].Acta Scientiae Circumstantiae,2015,35(12):3976-3984. |
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| Authors: | FANG Shubo CUI Qu PANG Huihuan TIAN Zhuang YIN Chunsheng and YANG Xiaoying |
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| Institution: | 1. Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306;2. Department of Environmental Science and Engineering, Fudan University, Shanghai 200433,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306,Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University, Ministry of Education, Shanghai 201306 and Department of Environmental Science and Engineering, Fudan University, Shanghai 200433 |
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| Abstract: | Two approaches of scaled circular buffer analysis and moving window analysis were presented to explain the heavy metal (HM) spatial patterns and the associated affecting factors along the urban-rural gradient in Shanghai. The scaled circular buffer analysis results showed that the population change index and the percentages of built-up areas of the 2 and 3 km buffers affected Cd and Cu distributions significantly (p < 0.05), while the road density of the 3 km buffer significantly affected the Pb contents. The moving window analysis results showed that industrial activity was the main source for Cd and Cu while Pb was affected by both traffic volume and landscape metrics characterizing various urbanization processes. The correlation analysis indicated that the two approaches had revealed similar influencing factors of the spatial accumulation of the HM-the urbanization processes related to industrial activities. This study is helpful to understanding the urbanization mechanism and managing the associated potential soil HM hazards. |
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| Keywords: | urbanization gradient landscape variables linear stepwise regression buffering analysis risk management |
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