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GIS的矿区土壤重金属污染评价及空间分布.doc

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GIS的矿区土壤重金属污染评价及空间分布.doc
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GIS , , 4 , 28 20 6 0cm Hg Cd As Cu Pb Ni , , Pb , ; Cu , Ni , Pb ; , ; ; ; ; ; (1978 ) , , , , GIS E-mail:gis_public@163.com (41261093) Pollution assessment and spatial distribution of soil heavy metals in mining area based on GIS CHEN Youliang SHI Lin WANG Zhaoru Jiangxi University of Science and Technology; Abstract Aiming at the problem that excessive levels of heavy metals in the soil are harmful to human health. In order to detect the excessive status and the distribution characteristics of soil heavy metal contents in mining area, this paper took four mining areas in Xinfeng county of Jiangxi province as an example, measured the content of heavy metals Hg, Cd, As, Cu, Pb, Ni from 20 to 60 cm in 28 soil samples, and analyzed them by using a combination methods of geostatistics and geographic information system. The single pollution index indicated that the soil had high pollution of Pb, the degree of pollution was moderate pollution; the spatial interpolation chart showed that the content of Cu was enriched in Hushan mining southwest, Ni was enriched in Hushan mining southwest and Chigang mining north. Pb contaminated areas was throughout the distribution area. Heavy metal content with depth have no significant change. Combining result in remediation of pollution, the pollution regulation and restoration are suggested by phytoremediation, physical and chemical methods. Keyword geographic information system; soil in mining area; heavy metal; pollution assessment; spatial distribution; 0 20 50 , , [1], , , [2] , , , [3] , , (geographic information system, GIS) , , , 1 1.1 4 ( 1) , 4 , , , 28 ( 2) GPS , , 10 , 100 m, , , 20~60 cm , 1 kg , , , 1 Fig.1 Location of the Study Area 2 Fig.2 Distribution of Sampling Sites 1.2 , 20 GB/T 22105.1 2008 GB/T 22105.2 2008, - , , (ASS-22021) [4] Hg As ; GB/T 17138 1997 GB/T 17139 1997 GB/T 17140 1997, + + , , (Jena AAs 6) , Cu Ni KI-MIBK Cd Pb 1.3 (GB15618 1995) [5-6], , ( 1) , 1 Tab.1 Soil Environmental Quality Standard and Soil Background Value of Jiangxi Province 2 2.1 2 , Hg Cd As Pb Ni Cu 0.063 0.049 4.35 100.936 35.857 25.107 mg/kg, , Hg 0.005~0.56 mg/kg , Cd 0.01~0.26 mg/kg , As 0.48~16.7 mg/kg , Pb 30.3~205 mg/kg , Ni 9~69 mg/kg , Cu 5~83 mg/kg ( 1) , Hg Cd As Pb Ni Cu 1.587 1.041 0.786 0.425 0.484 0.863 , 0.1 ; 0.1 1 ; 1 [7-8], Hg Cd , As Pb Ni Cu , 6 Hg Cd As Cu , , , Pb Ni , 2 Tab.2 The Statistical Characteristics of Soil Heavy Metal Content 2.2 , 1 [9-10], 28 Pb 26 , 92.86% Pb 1;Cu 5 , 17.86% Cu 1;Ni 14 , 50% Ni 1;Cd As Hg , 1 ;Cu Pb Cd As Hg Ni 0.717 347 2.883 878 0.244 643 0.29 0.419 524 0.896 429, Pb , ( 3) 3 Tab.3 Statistics of Heavy Metal Pollution Index 3 3.1 [11] Hg Cd As Pb Ni Cu , GS+9.0 , Arc GIS10.2 , h h ;h ( ) ;N (h) h ;Z (x i) Z (x) i [12-13] 3.2 (R) (RSS) [14], 3 Hg Cd Ni Cu , As Pb ; Hg (CO) 0.277, (Co+C) 0.520, 3.7 km, 53.269%;Cd (CO) 0.306, (Co+C) 1.289, 18 km, 23.739%;As (CO) 0.001, (Co+C) 0.548. 1.5 km, 0.182%;Cu (CO) 0.01, (Co+C) 4.029, 17 km, 0.248%;Pb (CO) 0.001, (Co+C) 0.566, 4.7 km, 0.177%;Ni (CO) 0.072, (Co+C) 1.855, 21 km, 3.881%; 75% [15]; Cd As Pb Ni Cu , Hg , Cd As Pb Ni Cu , ( 4) 4 Tab.4 Semivariance Function Model of Heavy Metals in Soil 4 Tab.4 Semivariance Function Model of Heavy Metals in Soil 3 Fig.3 Semivariance Function Model of Heavy Metals in Soil 3.3 , , [16-17] 5 , 6 MS 0, MS 0.249~0.003 ;RMS ASE, RSS 0.947~1.517 , , 5 Tab.5 Error Statistics of As Interpolation Cross Validation 3.4 Arc GIS10.2 6 [18], 4 , Cu Ni , Cu , Ni , ;Pb , Pb , ;Cd Hg As , , Pb Cu Ni , , Pb Ni Cu, 5 , 600 m 100 m , , , , , 4 Fig.4 Horizontal Distribution of Soil Heavy Metals Content in the Study Area 5 Fig.5 Relationship between River Buffer Zone and Sample Region 3.5 , , , ( 6) 6, 6 Cu , , Cu ;Pb Cd 0~20 cm>60~100 cm>20~60 cm, As Ni 60~100 cm>0~20 cm>20~60 cm, Pb CdNi As 60~100 cm 20~60 cm , 20~60 cm ; Hg 20~60 cm>0~20 cm>60~100 cm, Hg SPSS19 Pearson , 7 7 , Cu 0~20 cm 20~60 cm (R=0.745, P<0.01) , 20~60 cm 60~100 cm (R=0.934, P<0.01) ; , Pb Ni , Pb Ni Cu , Pb Ni Cu 6 Tab.6 Analysis of Soil Layer Variation of Heavy Metals in the Study Area 7 Tab.7 Correlation Coefficient and Significance of Heavy Metals Content in Different Depths 7 Tab.7 Correlation Coefficient and Significance of Heavy Metals Content in Different Depths 6 Fig.6 Vertical Distribution of Soil Heavy Metals Content in the Study Area 4 1) Hg Cd As Pb Ni Cu 0.063 0.049 4.35 100.936 35.857 25.107 mg/kg, , Hg 0.005~0.56 mg/kg , Cd 0.01~0.26 mg/kg , As 0.48~16.7 mg/kg , Pb 30.3~205 mg/kg , Ni 9~69 mg/kg , Cu 5~83 mg/kg , , , , Pb Ni Cu , 2) , 0.425~1.587 , Hg Cd , As Pb Ni Cu Cd Ni Cu , As Pb , 6 , 3) Cu Ni , ;Pb , ;Cd Hg As , , ; Pb Cu Ni , Cu ; Pearson Pb Cu Ni , , Pb Ni Cu [1] , . [J]. , 2003, 40 (2) :161-169. (HUANG Minghong, LUO Yongming.Land remediation and ecological restoration of mined land[J].Acta Pedologica Sinica, 2003, 40 (2) :161-169.) [2] , , , . : [J]. , 2006, 25 (5) :843-852. (LIAO Xiaoyong, CHEN Tongbin, WU Bin, et al.Mining urban soil pollution:concentrations and patterns of heavy metals in the soils of Jinchang, China[J].Geographical Research, 2006, 25 (5) :843-852.) [3] , , , . GIS [J]. , 2014, 36 (5) :1167-1172. (LIN Shitao, LI Lin, LU Zhihong, et al.Evaluation of heavy metal pollution of farmland soil in Jiangxi Province based on GIS[J].Acta Agriculturae Universitatis Jiangxiensis, 2014, 36 (5) :1167-1172.) [4] . [J]. , 2004, 13 (1) :1905-1907. (ZHENG Ruihua.Atomic fluorescence spectrometry determination of arsenic and mercury in ecological geochemical soil sample[J].FUJIAN Analysis&Testing, 2004, 13 (1) :1905-1907.) [5] , , . [J]. , 2005, 24 (8) :721-727. 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