漳州市绿地有机质和磁化率特征及其相关性

对漳州市的公园绿地、道路绿地、单位附属绿地和居住区绿地的有机质含量和磁学特征进行了分析,结果表明漳州市城区绿地有机质含量波动范围较大,土壤样品有机质含量的平均值是12.47 g/kg,变化范围为2.27～27.79 g/kg,不同绿地功能区有机质含量为单位附属绿地道路绿地公园绿地居住区绿地。土壤样品的平均磁化率值为300.39×10-8 m3/kg,频率磁化率平均值为1.58%,土壤呈现明显的磁性增强,不同绿地功能区土壤磁化率值为居住区绿地道路绿地单位附属绿地公园绿地;有机质与磁化率的相关性较弱,基本上不存在土壤发生学上的联系。由于工业排放,汽车尾气等人类活动的影响,原始土壤已经严重破坏,土壤组成复杂,大量外来物质入侵,漳州市城市绿地表现出明显的人为扰动特征,并且可能受到一定程度的重金属污染。

Organic Matter and Magnetic Susceptibility Characteristics of Urban Greenland in Zhangzhou City and Their Correlation

The organic matter and magnetic characteristics were investigated in the park greenland, the road greenland, the accessary greenland and the residential greenland in Zhangzhou City. The results showed that soil organic matter was in a very large fluctuation range. The average content of organic matter was 12.47 g/kg, and the variation ranged from 2.27 to 27.79 g/kg for the collected soil samples. In ranking order of organic matter content in different types of urban greenlands was accessory greenland 〉 road greenland 〉 park greenland 〉 residential greenland. The determination results of magnetism showed that the soil had a significant magnetic enhancement. The average value of magnetic susceptibility of soil samples was 300. 39 × 10-8 m3/kg, and the Xfd was 1. 58%. In ranking order of magnetic susceptibility in different types of urban greenlands was residential greenland 〉 road greenland 〉 accessory greenland 〉 park greenland. The correlation between magnetic susceptibility and organic matter was very weak, basically did not exist on the soil genetic link. Because of industrial emissions, car exhaust and other human activities, the original soil was damaged severely, and composition of soil was complex. The urban green space of Zhangzhou City showed anthropogenic significant disturbance, and it may be polluted by heavy metals.