基于文献数据的广西典型土壤铅含量特征及其风险研究
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广西自然科学基金项目(No. 2013GXNSFEA053002)、“八桂学者”建设工程专项经费和国家自然科学基金项目(41261082)


Characterization of Pb Contents in Typical Soils of Guangxi and Risk Assessment Based on Literature Date
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the Guangxi Natural Science Fund Project(No. 2013GXNSFEA053002), the Special Funding for Guangxi

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    摘要:

    为阐述广西土壤铅含量现状及其潜在风险,通过检索20世纪90年代至今国内外关于广西土壤铅含量的文献,共筛选出目标文献57篇,涉及广西20多个地区,样品5 807个。结果表明,广西区土壤铅含量范围为18.80~6 350 mg kg-1,几何均值为147.9 mg kg-1。不同功能区的土壤铅含量分布存在较大差异,清洁土壤、城区土壤、工矿土壤、非矿区农用土壤和矿区农用土壤铅含量的几何均值分别为26.17、32.88、244.5、42.93和347.6 mg kg-1,分别是广西土壤铅背景值的1.391倍、1.747倍、12.99倍、2.281倍、18.47倍。调查区域中铅污染指数大于1的样本占总量的23%,有7%的样本属于重度污染,主要分布在南丹县、融安县等地,这可能与该区域的矿业活动有关。基于广西区铅矿产分布及目前未涉及调查的区域,建议对重污染区南丹、金城江、环江、融安、阳朔和崇左县等地采取治理措施,对铅锌矿分布较多的大新县、武宣县、岑溪县、贺县等地区作进一步的调查研究。

    Abstract:

    【Objective】This paper is to illustrate the status quo of soil lead contents and potential risk of soil lead in Guangxi. 【Method】By searching various important databases (China National Knowledge Infrastructure, Wanfang Data, Vip, Science Direct, Web of Science, Springer, etc.) for papers on soil lead contents in Guangxi published at home and abroad since the 1990s. A total of 57 papers were retrieved involving 5 807 soil samples from 20 areas in Guangxi. As the areas covered varied in background and function, the soil samples were sorted into five groups (clean soil, soil from urban zone, soil from industrial and mining zone, soil from farmland in non-industrial and mining zone, and soil from farmland in industrial and mining zone). To make the data comparable with the prevailing criteria of the Standard for Soil Environment Quality (GB15618-1995), means it the target papers tallying with normal distribution or data acquired from the tables and/or figures in the papers were collated. 【Result】Results show that lead concentration in the soil of Guangxi varied in the range of 18.80 ~ 6 350 mg kg-1, with geometric mean being 147.9 mg kg-1 or 7.86 times as high as the background value. Obviously it was lower than Grade II Criterion of the Standard for Soil Environment Quality (GB15618-1995). The soil in the Siding lead-zinc mining area was 6 350 mg kg-1 or the highest in lead content, with pollution accumulation index reaching up to 278.5. Soils in different function zones varied sharply in soil lead content distribution. The lead content in clean soil, soil in urban area, soil in industrial and mining zone, soil in farmland of non-industrial and mining zone and soil in farmland of industrial and mining zoneswas26.17, 32.88, 244.5, 42.93 and 347.6 mg kg-1, respectively, or 1.391, 1.747, 12.99, 2.281 and 18.47 times, respectively, the background value in Guangxi. Soil lead content in clean soil, soil in urban area, and soil in farmland of non-industrial and mining zone was moderate in spatial variability, but in the other two groups, it was high in spatial variability. The coefficient of variation (CV) of the soil in Guangxi as a whole was 220.8%. Of the total soil samples, 23% were > 1 in lead pollution index and about 7% fell into the category of “heavily polluted”. The heavily polluted soil samples were collected mainly from Nandan, Rongan, etc., where the mining activities were very intensive. 【Conclusion】Based on the distribution of lead mines and areas not covered by the survey, it is suggested that positive management measures be adopted in those highly polluted areas, such as Nandan, Jinchengjiang, Huanjiang, Rongan, Yangshuo, Chongzuo, etc., and further in-depth investigations be made of the areas relatively rich in lead and zinc resources, such as Daxin, Wuxuan, Cenxi and Hezhou.

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宋波,田美玲,陈同斌,陆素芬,余元元.基于文献数据的广西典型土壤铅含量特征及其风险研究[J].土壤学报,2017,54(1):92-107. DOI:10.11766/trxb201604200011 SONG Bo, TIAN Meiling, CHEN Tongbin, LU Sufen, YU Yuanyuan. Characterization of Pb Contents in Typical Soils of Guangxi and Risk Assessment Based on Literature Date[J]. Acta Pedologica Sinica,2017,54(1):92-107.

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  • 收稿日期:2016-01-10
  • 最后修改日期:2016-08-22
  • 录用日期:2016-10-12
  • 在线发布日期: 2016-12-06
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