| Assessment of greenhouse heavy metal pollution in Guanzhong area and analysis of its spatial distribution on field scale using Geo-statistical software |
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| DOI：10.7606/j.issn.1000-7601.2016.01.42 |
| Key Words: Guanzhong area greenhouse heavy metal pollution geostatistics spatial distribution |
| Author Name | Affiliation | | TANG Xi-wang | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | TONG Yan-an | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | JI Pu-hui | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | LIANG Lian-you | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | PANG Yan | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China | | Nguyen Thanh Hung | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China；College of Resources and Environment, Thu Dau Mot University, Binh Duong, Vietnam 72000 | | WANG Li | Collage of Resource and Environment Sciences, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| To assessment the greenhouse heavy metal pollution in Guanzhong area, eight facility agricultural areas were selected to collect soil samples. Two greenhouses from the same place with the same planting years were also selected to analysis the spatial distribution of heavy metals in soil on field scale using Geo-statistical software. Samples were digested with HClO4-HNO3-HF and subsequently assayed for Cd, Cr, Cu, Pb by ICP-AES. The findings showed the PLI(Pollution load index) of eight greenhouse soil were 1.403，1.323，1.261，1.258，1.723，1.372，1.087，1.152，and the greenhouse soil in Guanzhong area was slightly polluted with PLI 1.311. The method of analysis vertical section of soil spatial distribution of heavy metals on field scale using Geo-statistical software was established. Maps of heavy metals spatial distribution in two greenhouses soil were made using Kriging method. The maps showed the pollutant in No.1 greenhouse was Cd and in No.2 greenhouse were Cd, Cu and Pb. At field size, Cd content in No.1 greenhouse topsoil and Cd and Cu content in No.2 greenhouse topsoil were both higher than in subsoil, while Pb in No.2 greenhouse topsoil lower than subsoil. In conclusion, we detected complexity of soil heavy metal pollution of greenhouse, as evidenced by the contrasting mechanism of similar greenhouses. |
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