The 80 topsoil samples (0-10 cm) are collected from different land use types in built-up areas, northern new town (including chemical concentration area and concentrated residential areas) and suburban agricultural land at Shihezi oasis city in arid zone of Xinxiang, China. The aim of this study is to analysis the magnetic parameters of concentration, composition and particle size of magnetic properties for the urban topsoils, and to describe the spatial distribution under different circumstances of land use. The magnetic grain parameters show that the soils are dominated with coarser multi domain (MD) ferrimagnetic grain. The magnetic mineralogy parameters suggest that samples are dominated by ferrimagnetic minerals corresponding to magnetite-like minerals, but contain a small amount of anti-ferromagnetic material. From the spatial distribution, the concentration of magnetic minerals are ranked in the order of northern new town > built-up areas > suburban agricultural land. Particle size of magnetic minerals are ranked in the order of northern new town > suburban agricultural land > built-up areas. The high concentration of magnetic parameters areas is coincident with factories' area. However, the magnetic concentration in heavy chemical industry region (N1-N7) are low, and particle size of the magnetic particles is larger. XLF, SIRM and SOFT are effective magnetic parameter indexes indicating the light industrial zone of the study area. While, the discrimination in the heavy chemical industry area needs to combine with a magnetic particle parameters (XFD%) .
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