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Heavy Metal Pollution Characteristics, Ecological Risks and Sources in Soil and Lake Water Around Qinghai Lake
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Guangying LI1, Xiaoyun CHU2, Deling DENG1, Minjie DU1, Xiaoyuan ZHAO3, Miao ZHANG4, Lingqing WANG3, *
Northwestern Geology | 2026, 59(1) : 274 - 287
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Northwestern Geology | 2026, 59(1): 274-287
Heavy Metal Pollution Characteristics, Ecological Risks and Sources in Soil and Lake Water Around Qinghai Lake
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Guangying LI1, Xiaoyun CHU2, Deling DENG1, Minjie DU1, Xiaoyuan ZHAO3, Miao ZHANG4, Lingqing WANG3, *
Affiliations
  • 1Qinghai Province Ecological Environment Planning and Environmental Protection Technology Center, Xining 810000, Qinghai, China
  • 2College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
  • 3Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • 4College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
Published: 2026-02-20 doi: 10.12401/j.nwg.2025060
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As an important plateau lake ecosystem, the heavy metal pollution of soil and lake water in Qinghai Lake Basin has an important impact on regional ecological environment and biosafety, but the related pollution characteristics and sources are not systematically studied. In this study, the concentrations of five heavy metals (Cu, Zn, Cr, Pb, Cd) in the soil and lake water of Qinghai Lake Basin were measured, the pollution characteristics and ecological risks were assessed by the local accumulation index method and the potential ecological risk index method, and the pollution sources and clustering characteristics were analyzed by PMF model and SOM method. The results show that the ground accumulation indices of Cu, Zn and Cr are all negative, and they are in a pollution-free state, while Pb and Cd are mildly to moderately polluted. According to the "Surface Water Environmental Quality Standard" (GB3838-2002), the lake water quality is evaluated. Cu, Zn and Cd meet the Class Ⅱ water standard, and Pb meets the Class V water standard. Soil pollution is mainly influenced by the natural geological background, industrial and agricultural activities.

Qinghai Lake  /  heavy metals  /  water-soil correlation  /  risk assessment  /  source apportionment
李广英, 楚小云, 邓得玲, 杜敏洁, 赵筱媛, 张淼, 王凌青. 环青海湖区土壤与湖水重金属污染特征、生态风险及来源解析. 西北地质, 2026 , 59 (1) : 274 -287 . DOI: 10.12401/j.nwg.2025060
Guangying LI, Xiaoyun CHU, Deling DENG, Minjie DU, Xiaoyuan ZHAO, Miao ZHANG, Lingqing WANG. Heavy Metal Pollution Characteristics, Ecological Risks and Sources in Soil and Lake Water Around Qinghai Lake[J]. Northwestern Geology, 2026 , 59 (1) : 274 -287 . DOI: 10.12401/j.nwg.2025060
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Year 2026 volume 59 Issue 1
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Article Info
doi: 10.12401/j.nwg.2025060
  • Receive Date：2024-12-19
  • Online Date：2026-09-16
  • Published：2026-02-20
Article Data
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History
  • Received：2024-12-19
  • Revised：2025-03-17
  • Accepted：2025-04-21
Affiliations
    1Qinghai Province Ecological Environment Planning and Environmental Protection Technology Center, Xining 810000, Qinghai, China
    2College of Environmental Science and Engineering, Beijing Forestry University, Beijing 100083, China
    3Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
    4College of Earth and Environmental Sciences, Lanzhou University, Lanzhou 730000, Gansu, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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