RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN >> 2020, Vol. 29 >> Issue (2): 442-448.doi: 10.11870/cjlyzyyhj202002017

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Magnetic Properties and Its Spatial Distribution in “Urban-to-Rural”

LI Qiong-qiong1, LIU Yun-long1,2   

  1. (1.School of Environment and Geographical Sciences, Shanghai Normal University,Shanghai 200234,China; 2.Geography Department, Shanghai Normal University,Shanghai 200234,China)

  • Online:2020-02-20 Published:2020-02-20

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Abstract: In order to explore the environmental magnetic properties and their spatial distribution in “urban-to-rural”, this study choose Xuhui, Minhang and Fengxian districts in Shanghai to systematic magnetic analysis. The results show that the soil magnetic enhancement is obvious and is caused by human activities. Soil magnetic properties are mainly controlled by ferrimagnetic minerals with low coercivity and soft magnetic properties. Magnetic mineral particles are relatively coarser, mainly multi-domain (MD) and stable single domain (SSD). χlf, SIRM, χarm, and HIRM showed the similar spatial variation characteristics, the high value area is located in the north of Xuhui District, southeast and southwest of Minhang District, and north and south of Fengxian District. The magnetically enhanced high value points are located in the industrial area. The distribution of the magnetic susceptibility is basically consistent with the layout of the enterprise, and the pollution-type enterprises are used as the source to spread the pollution.

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