Urmia University Applied Soil Research 2423-7116 10 4 2023 02 20 Investigating the origin and potential ecological risk of heavy metals in different land-uses in West of Arak, Markazi Province Investigating the origin and potential ecological risk of heavy metals in different land-uses in West of Arak, Markazi Province 120 135 121294 10.30466/asr.2023.121294 FA Abbas Taati Soil Science and Engineering Department, College of Agriculture, Shahrekord University, Shahrekord, Iran 0000-0002-5602-2124 Mohammad Hasan Salehi Soil Science and Engineering Department, College of Agriculture, Shahrekord University, Shahrekord, Iran Jahangard Mohammadi Soil Science and Engineering Department, College of Agriculture, Shahrekord University, Shahrekord, Iran Reza Mohajer Department of Agriculture, Payame Noor University Tehran, Iran Journal Article 2021 03 16 The aim of this study was to investigate the origin and potential ecological risk of heavy metals (arsenic (As), cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn) and Cu (copper) in different land uses in West of Arak, Markazi Province. A total of 235 Surface soil samples were taken from the depth of 0-5 cm including 160, 46 and 29 samples from agricultural, rangeland and industrial land uses, respectively. The ranges of As, Pb, Zn, Ni, Cd and Cu in studied soils were 55.7–357.2, 6.8–256, 13.2–858, 26.7–172, 0.1–3.65 and 5.1–34.1 mg/kg, respectively. Comparison of the mean concentration of heavy metals in different land uses indicative of the same influence of land use to metal accumulations of As, Pb, Zn and Cu, but in the case of Ni and Cd showed that a differential influence of land use the distribution of these metals in the soil. When the average amount of crust was used as a reference background, the C_f values of As in all land uses were higher than other metals, indicating high level of pollution of soils in this region. The index of PLI in land uses comprised, industrial (3) > rangeland (2.4) > agriculture (2.39), indicating the pollution and gradual destruction of soil. The mean PER based on reference and local GB showed very high and low pollution level in all land uses, respectively. Principal component analysis (PCA) showed that Pb and Zn originated from common anthropogenic sources related to industrialization and mining, whereas Cu and Ni are probably in associated with geological sources. Cd was mainly derived from the input of agricultural and industrial activities, and As should be attributed to natural resources, emissions from local industries, mining, herbicides and the use of poultry manure and atmospheric dust. The aim of this study was to investigate the origin and potential ecological risk of heavy metals (arsenic (As), cadmium (Cd), lead (Pb), nickel (Ni), zinc (Zn) and Cu (copper) in different land uses in West of Arak, Markazi Province. A total of 235 Surface soil samples were taken from the depth of 0-5 cm including 160, 46 and 29 samples from agricultural, rangeland and industrial land uses, respectively. The ranges of As, Pb, Zn, Ni, Cd and Cu in studied soils were 55.7–357.2, 6.8–256, 13.2–858, 26.7–172, 0.1–3.65 and 5.1–34.1 mg/kg, respectively. Comparison of the mean concentration of heavy metals in different land uses indicative of the same influence of land use to metal accumulations of As, Pb, Zn and Cu, but in the case of Ni and Cd showed that a differential influence of land use the distribution of these metals in the soil. When the average amount of crust was used as a reference background, the C_f values of As in all land uses were higher than other metals, indicating high level of pollution of soils in this region. The index of PLI in land uses comprised, industrial (3) > rangeland (2.4) > agriculture (2.39), indicating the pollution and gradual destruction of soil. The mean PER based on reference and local GB showed very high and low pollution level in all land uses, respectively. Principal component analysis (PCA) showed that Pb and Zn originated from common anthropogenic sources related to industrialization and mining, whereas Cu and Ni are probably in associated with geological sources. Cd was mainly derived from the input of agricultural and industrial activities, and As should be attributed to natural resources, emissions from local industries, mining, herbicides and the use of poultry manure and atmospheric dust. https://asr.urmia.ac.ir/article_121294_11074d59b1336cea2a2afddab4e936f7.pdf