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根据浙江省百余个红壤和黄壤剖面的磁测结果,对土壤磁性与成土因素的关系进行了初步分析.结果表明,成土母质是决定土壤磁性的主要因素,由强磁性母质(玄武岩、安山岩和花岗间长岩等)上发育的土壤,其x(质量磁化率)值多在(400～800)×10~(-8)m~3kg~(-1),其土壤x值与母质的x值呈极显著正相关;由弱磁性母质(变质岩和沉积岩)上发育的土壤,其x值多在(10～90)×10~(-8)m~3kg~(-1),红壤和黄壤的x值都与土壤全铁量Fet呈极显著正相关.土壤x值与年均温和年降雨量的乘积呈极显著正相关,由相同母质上发育的土壤x值和氧化铁游离度从南到北均呈下降趋势.地形引起土壤水分状况的差异,使相同母质上发育的土壤x值呈一磁性“土链”分布.
Based on the magnetic measurements of more than 100 red and yellow soil profiles in Zhejiang Province, the relationship between soil magnetism and soil-forming factors was analyzed. The results showed that soil-forming parent material was the main factor determining soil magnetism and was composed of ferromagnetic parent materials (basalt, Andesite and granite feldspar etc.), the values of x (mass susceptibility) are mostly in the range of (400-800) × 10 -8 m -3 kg -1, and the values of soil x The x value of the parent material is highly significant positive correlation; the x value of the soil developed from the weak magnetic parent material (metamorphic rocks and sedimentary rocks) is more than (10 ~ 90) × 10 ~ (-8) m ~ 3kg ~ (-1) , The x values of red soil and yellow soil were significantly and positively correlated with the soil total iron content Fetween soil x value and annual mean annual rainfall had a significant positive correlation, the soil x value and iron oxide The degree of freeness decreased from south to north, and the difference of soil moisture caused by the terrain made the soil x value of the same parent material exhibit a magnetic “earth chain” distribution.