| 广东省揭阳市土壤铅的空间分布特征及影响因素 |
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| 引用本文： | 臧传子,温汉辉,蔡立梅,罗杰,徐述邦,梅敬娴.广东省揭阳市土壤铅的空间分布特征及影响因素[J].现代地质,2021,35(5):1425-1432. |
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| 作者姓名： | 臧传子 温汉辉 蔡立梅 罗杰 徐述邦 梅敬娴 |
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| 作者单位： | 1.长江大学 油气资源与勘探技术教育部重点实验室,湖北 武汉 4301002.长江大学 资源与环境学院,湖北 武汉 4301003.广东省有色金属地质局940队,广东 清远 5115004.中国科学院 广州地球化学研究所矿物学与成矿学重点实验室,广东 广州 510640 |
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| 基金项目： | 国家自然科学基金项目(41203061);教育部油气资源勘探技术重点实验室开放基金项目(K2018-19);湖北省自然科学基金项目(2015CFB603);长江大学大学生创新创业训练项目(Yz2020380);长江大学大学生创新创业训练项目(Yz2020385) |
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| 摘 要： | 以广东省揭阳市土壤为研究对象,采集了表层土壤(0~20 cm)样1 330个和深层土壤(>150 cm)样331个,测定了土壤Pb含量。利用GIS空间分析技术、半变异函数拟合和方差分析等方法研究土壤Pb含量的空间结构、特征和影响因素。结果显示: 揭阳市不存在明显的土壤Pb污染,表层土壤Pb含量平均值39.26 mg/kg,低于揭阳市土壤Pb背景值(43.71 mg/kg),略高于广东省土壤Pb背景值(36.00 mg/kg);富集因子表明研究区表层土壤Pb富集程度主要为无富集和轻微富集,分别占52.11%和42.63%,Pb富集不明显;研究区表层土壤Pb空间分布呈中等自相关性;表层土壤Pb高值区主要分布在人类活动影响强烈的东部和南部地区。按土地利用、成土母质、土壤类型及其理化性质的分类统计表明,林地及未利用地表层土壤Pb含量最高;页岩风化形成的土壤Pb含量显著高于其他成土母质区土壤;黄壤Pb含量相对较高;有机碳和pH值均与土壤Pb含量呈显著正相关。
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| 关 键 词： | 土壤 铅 空间分布 影响因素 揭阳市 |
| 收稿时间： | 2020-10-12 |
| 修稿时间： | 2020-12-31 |
Spatial Distribution Characteristics and Influencing Factors of Soil Lead in Jieyang City,Guangdong Province |
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| ZANG Chuanzi,WEN Hanhui,CAI Limei,LUO Jie,XU Shubang,MEI Jingxian.Spatial Distribution Characteristics and Influencing Factors of Soil Lead in Jieyang City,Guangdong Province[J].Geoscience——Journal of Graduate School,China University of Geosciences,2021,35(5):1425-1432. |
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| Authors: | ZANG Chuanzi WEN Hanhui CAI Limei LUO Jie XU Shubang MEI Jingxian |
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| Institution: | 1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, Ministry of Education, Yangtze University, Wuhan, Hubei 430100, China2. College of Resources and Environment, Yangtze University, Wuhan, Hubei 430100, China3. No.940 Branch of Nonferrous Metals Geological Bureau of Guangdong Province, Qingyuan, Guangdong 511500, China4. Key Laboratory of Mineralogy and Metallogeny, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China |
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| Abstract: | Taking the soil in Jieyang City as the research object, 1,330 surface soil samples (0-20 cm) and 331 deep soil samples (>150 cm) were collected, and the Pb content in soil was determined. GIS spatial ana-lysis technology, semivariogram fitting and variance analysis were used to study the spatial structure, distribution characteristics and influencing factors of soil Pb content. The results showed that there was no obvious Pb pollution in Jieyang city, and the average Pb content in surface soil was 39.26 mg/kg, which was lower than the background value of Pb in Jieyang City (43.71 mg/kg) and slightly higher than that in Guangdong Province (36.00 mg/kg). Enrichment factors showed that the enrichment degree of Pb in the surface soil of the study area is mainly no enrichment and slight enrichment, accounting for 52.11% and 42.63%, respectively, and Pb enrichment is not significant; The spatial distribution of Pb in the surface soil of the study area showed mode-rate autocorrelation. The Pb high value areas of surface soil are mainly distributed in the eastern and southern parts where human activities have a strong influence. According to the classification statistics of land use, soil parent material, soil type and its physical and chemical properties, the Pb content in surface soil of woodland and unused land is the highest; The Pb content in the soil formed by shale weathering is significantly higher than that of other soil-forming parent materials; Pb content in yellow soil is relatively high; Organic carbon and pH were positively correlated with Pb content in soil. |
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| Keywords: | soil lead spatial distribution influencing factors Jieyang City |
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