In order to understand the status of soil heavy metal pollution in Anqiu Area, Shandong Province,10 194 soil samples are systematically collected,the contents of 8 heavy metal elements including Cd, Hg, Pb and As are tested and analyzed.The geochemical distribution characteristics of heavy metal elements and their possible sources are discussed by using geostatistical and multivariate statistical methods.The results show that the average contents of Cd, Hg and As in the soil of the study area are similar to the background values of Weifang soil, and the average contents of other elements are slightly higher than the soil background values of Weifang.The average contents of the 8 heavy metal elements are all lower than risk screening values of standard. According to cluster analysis,eight heavy metal elements are mainly divided into four categories.The first category is Cr, Ni, Cu and Zn, whose distributions are mainly affected by natural factors such as the parent material of the soil, while Zn is also affected by human activities.The second category is Cd,Pb and the third category is Hg. The distribution characteristics of these elements are greatly affected by human activities such as metal smelting and processing, transportation, mining, etc.The fourth category is As, which is not only inherited from the the parent material of the soil, but also affected by human activities. The soil environmental quality in the study area is evaluated by Soil Environmental Quality Risk Control Standard for Soil Contamination of Agricultural Land(GB 15618—2018),the results show that the soil environment in the study area is mainly safe zone, risk-freeand. Point source pollution only exists in some places.
赵秀芳, 张永帅, 冯爱平, 王艺璇, 夏立献, 王宏雷, 杜伟. 山东省安丘地区农业土壤重金属元素地球化学特征及环境评价[J]. 物探与化探, 2020, 44(6): 1446-1454.
ZHAO Xiu-Fang, ZHANG Yong-Shuai, FENG Ai-Ping, WANG Yi-Xuan, XIA Li-Xian, WANG Hong-Lei, DU Wei. Geochemical characteristics and environmental assessment of heavy metal elements in agricultural soil of Anqiu area, Shandong Province. Geophysical and Geochemical Exploration, 2020, 44(6): 1446-1454.
Feng Y Q, Liu L F, Xiao H L, et al. Pollution characteristics and health risk assessment of heavy metals in soil of typical industrial district of Shenzhen[J]. Ecology and Environmental Sciences, 2017,26(6):1051-1058.
Zhang Y Y, Shi Z G, Li Y R, et al. Effects of different tillage methods on soil physical-chemical properties and heavy metal content in Minqin Oasis[J]. Ecology and Environmental Sciences, 2019,28(1):207-214.
Xia F, Wang Q S, Cai L M, et al. Contamination and health risk for heavy metals via consumption of vegetables grown in non-freeous metals smel ting area[J]. Resources and Environment in the Yangtze Basin, 2017,26(6):865-873.
Chai J, Guo J, Chai S L, et al. Source identification of eight heavy metals in grassland soils by multivariate analysis from the Baicheng-Songyuan area,Jilin Province,Northeast China[J]. Chemosphere, 2015,134:67-75.
Cao L L, Tian H T, Yang J, et al. Multivariate analyses and evaluation of heavy metals by chemometric BCR sequential extraction method in surface sediments from Lingdingyang Bay,South China[J]. Sustainability, 2015,7:493-495.
Li X L, Zhou T F, Yin H Q, et al. Sources analysis of dustfall in Tongling City based on hierarchical cluster analysis and principal component analysis methods[J]. Geological Review, 2010,56(2):283-288.
Ministry of Ecology and Environment of the People's Republic of China, State Administration for Market Regulation. GB 15618—2018 Soil environmental quality risk control standard for soil contamination of agricultural land[S]. Beijing: China Environment Publishing, 2018.
Pang X G, Dai J R, Chen L, et al. Soil geochemical background value of 17 cities in Shandong Province[J]. Shandong Land and Resources, 2019,35(1):46-56.
Zhao Y C, Wang Z G, Sun W X, et al. Spatial interrelations and multi-scale sources of soil heavy metal variability in a typical urban-rural transition area in Yangtze River Delta region of China[J]. Geoderma, 2010,156(3/4):216-227.
David M G, Zhang C S, Owen T. Carton geostatistical analyses and hazard assessment on soil lead in Silvermines area,Ireland[J]. Environmental Pollution, 2004,127(2):239-248.
Chen X C, Cui Y S. Small-scalespatial distribution of heavy metal sinurbantop soil: A case study in a small erea near Shougang group[J]. Journal of the Graduate School of the Chinese Academy of Sciences, 2010,27(2):176-183.
Ao M, Chai G Q, Fan C W, et al. Evaluation of potential pollution risk and source analysis of heavy metals in paddy soil and rice[J]. Transactions of the Chinese Society of Agricultural Engineering, 2019,35(6):198-205.