| 刘腾,蒋炜.广东惠州金山新城规划区土壤地球化学背景值及分区研究[J].矿产勘查,2024,15(12):2318-2328 |
| 广东惠州金山新城规划区土壤地球化学背景值及分区研究 |
| Study on soil geochemical background value and zoning of Jinshan New Town Planning Area in Huizhou, Guangdong Province |
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| DOI：10.20008/j.kckc.202412014 |
| 中文关键词: 表层土壤 地球化学背景值 地球化学分区 金山新城规划区 |
| 英文关键词: surface soil geochemical background value geochemical zoning Jinshan New Town Planning Area |
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| 摘要点击次数: 186 |
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| 中文摘要: |
| 基于广东省惠州金山新城规划区地质调査获得的表层土壤地球化学数据，计算了该区有机质(SOM)、N、 P、K、U、Th、As、Cd、Cr、Cu、Hg、Ni、Pb、Zn、pH、Se共 16项元素(指标)的土壤地球化学背景值，并对背景值特征及地球化学分区进行了探讨。结果表明:相比于珠三角地区土壤，规划区土壤富集 As、Cd、Pb，贫乏 Se、SOM；相比于广东省土壤，区内土壤富集 K、Cd、As、Zn、Pb、Se、Hg、Cu。规划区不同成土母质土壤背景值差异明显，以第四系松散沉积物为成土母质的土壤最富集 As元素，而 As元素在以沉积岩和侵入岩为成土母岩的土壤中却都最贫乏，以花岗岩风化物为成土母质的土壤最富集 Th元素。规划区不同区域土壤元素分布差异性较大，全区共划分为 5个具有不同元素组合特征的地球化学区，成土母质、河流冲洪积作用、人类活动等因素共同控制了区内元素的迁移赋存。本研究成果为规划区土地资源的规划利用、生态环境安全保障及农业经济发展提供了基础地学依据。 |
| 英文摘要: |
| Based on the geochemical data of surface soil obtained from the geological survey of Jinshan NewTown Planning Area in Huizhou, Guangdong Province, the soil geochemical background values of 16 elements (in. dexes), including organic matter (SOM), N, P, K, U, Th, As, Cd, Cr, Cu, Hg, Ni, Pb, Zn, pH and Se, were calculated,and the characteristics of background values and geochemical zoning were discussed. The results showed that com.pared with the soil in the Pearl River Delta region, the soil in the planning area was enriched in As, Cd and Pb, andpoor in Se and SOM; compared with the soil in Guangdong Province, the soil in the area is rich in K, Cd, As, Zn, Pb,Se, Hg and Cu. The soil background values of different parent materials in the planning area are significantly differ.ent. The soil with quaternary loose sediments as the parent material is the most enriched in As elements, while Aselements are the poorest in the soil with sedimentary rocks and intrusive rocks as the parent rock. The soil with gran.ite weathering is the most enriched in Th elements. The distribution of soil elements in different regions of the plan.ning area is quite different. The whole area is divided into five geochemical areas with different element combina.tion characteristics. The migration and occurrence of elements in the area are controlled by factors such as soil par.ent material, river alluvial and diluvial action and human activities. The research results are beneficial to the plan.ning of land resources in the planning area. |
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