腾格里沙漠表土磁化率的指示意义

he magnetic susceptibility of soils is crucial for paleoenvironmental and paleoclimatic studies. However, debate persists regarding whether soil magnetic susceptibility can serve for paleoprecipitation reconstruction or reflects changes in prevenance in arid regions. To address this issue, new magnetic measurements were conducted on modern soil samples across the Tengger Desert, on the edge of the East Asian summer monsoon region. The weak correlation between the soil magnetic susceptibility, frequency-dependent susceptibility, and modern mean annual precipitation (R2=0.01 and 0.02) suggests that precipitation is not the primary factor driving variations in the surface soil magnetic susceptibility in the Tengger Desert. Conversely, distinct magnetic differences among arid regions indicate that soil magnetic susceptibility can differentiate between origin areas. These findings underscore the need for careful interpretation of soil magnetic susceptibility when conducting climate and environmental research in arid regions.