Development and Application of Rapid Assessment System for Soil Heavy Metal Pollution in Mango Producing Area

doi:10.11924/j.issn.1000-6850.casb2022-0459

Abstract

Abstract:

In order to carry out quickly and effectively soil heavy metal pollution assessment and serve soil heavy metal pollution prevention and remediation, a soil heavy metal pollution evaluation system to realize the unified management of multi-source heterogeneous data and rapid evaluation of soil heavy metal pollution was designed and developed. The system was based on Microsoft Visual Studio 2012 platform, ArcGIS Engine technology and C# programming language, and was applied to the data management and pollution assessment of seven heavy metal elements, As, Cd, Cr, Cu, Ni, Pb and Zn, in a mango growing area in Panzhihua. The results showed that: (1) the heavy metals in soil of this mango growing area was at a heavy contamination level; (2) the highest pollution level of Cd was classified as moderate-severe pollution; (3) the comprehensive potential ecological risk was classified as a moderate hazard level; (4) the evaluation efficiency of different indices of the soil heavy metal pollution rapid evaluation system was improved by 233%-1900%, compared with the traditional evaluation method developed by GIS. The system can efficiently assess soil heavy metal pollution and manage multi-source heterogeneous soil data, and provide a scientific basis for the prevention and control of soil heavy metal pollution.

Key words: soil, heavy metal, pollution assessment, system development, multi-source heterogeneous data

JIA Wenjing, WANG Zhe, JIANG Hu, LUO Ying, ZHANG Zhenlong, FENG Xiyang, ZHANG Jiaqian, ZENG Qiuping. Development and Application of Rapid Assessment System for Soil Heavy Metal Pollution in Mango Producing Area[J]. Chinese Agricultural Science Bulletin, 2023, 39(13): 157-164.

Figures/Tables 8

References 35

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项目	pH	元素浓度/(mg/kg)
项目	pH	As	Cd	Cr	Cu	Ni	Pb	Zn
最小值	4.7	0.000	0.880	65.820	22.030	31.510	12.500	62.250
最大值	9.0	17.860	4.200	985.000	309.100	195.340	79.260	161.660
均值	7.6	9.281	2.169	243.148	115.646	64.135	28.072	111.149
四川省土壤背景值		10.4	0.079	79	31.1	32.6	30.9	86.5
超标率(GB 15618—2018)/%		0.00	100.00	51.72	20.69	17.24	0.00	0.00

项目	pH	元素浓度/(mg/kg)
项目	pH	As	Cd	Cr	Cu	Ni	Pb	Zn
最小值	4.7	0.000	0.880	65.820	22.030	31.510	12.500	62.250
最大值	9.0	17.860	4.200	985.000	309.100	195.340	79.260	161.660
均值	7.6	9.281	2.169	243.148	115.646	64.135	28.072	111.149
四川省土壤背景值		10.4	0.079	79	31.1	32.6	30.9	86.5
超标率(GB 15618—2018)/%		0.00	100.00	51.72	20.69	17.24	0.00	0.00

分级	单因子指数(P_i)		内梅罗综合指数(P_N)		综合潜在生态风险(RI)
分级	范围	污染程度	范围	污染程度	范围	危害程度
1级	P_i<1	未污染	P_N<0.7	安全	RI<150	轻微危害
2级	1≤P_i<2	轻污染	0.7≤P_N<1.0	警戒级	150≤RI<300	中等危害
3级	2≤P_i<3	中污染	1.0≤P_N<2.0	轻污染	300≤RI<600	强危害
4级	3≤P_i<5	重污染	2.0≤P_N<3.0	中污染	RI≥600	很强危害
5级	P_i≥5	严重污染	P_N≥3.0	重污染

分级	单因子指数(P_i)		内梅罗综合指数(P_N)		综合潜在生态风险(RI)
分级	范围	污染程度	范围	污染程度	范围	危害程度
1级	P_i<1	未污染	P_N<0.7	安全	RI<150	轻微危害
2级	1≤P_i<2	轻污染	0.7≤P_N<1.0	警戒级	150≤RI<300	中等危害
3级	2≤P_i<3	中污染	1.0≤P_N<2.0	轻污染	300≤RI<600	强危害
4级	3≤P_i<5	重污染	2.0≤P_N<3.0	中污染	RI≥600	很强危害
5级	P_i≥5	严重污染	P_N≥3.0	重污染