许昌市典型区域土壤磁化率与有机质含量的相关性研究  

Relationship between Magnetic Susceptibility and Organic Matter Content of Soil in Typical Areas of the Xuchang City

作　　者：闫慧 曹军芬[2] 张坤龙 袁冬颜 吉梦洁 邓亚平 YAN Hui;CAO Junfen;ZHANG Kunlong;YUAN Dongyan;JI Mengjie;DENG Yaping(College of Urban-rural Planning and Landscape Architecture, Xuchang University, Xuchang 461000,Chian;Employment guidance center, Xuchang University, Xuchang 461000, China;School of Civil Engineering and Architecture, Zhongyuan University of Technology, Zhengzhou 450007, China)

机构地区：[1]许昌学院城乡规划与园林学院,河南许昌461000 [2]许昌学院就业指导中心,河南许昌461000 [3]中原工学院建筑工程学院,郑州450007

出　　处：《地球与环境》2018年第3期231-236,共6页Earth and Environment

基　　金：河南省科技厅项目(152102310364);河南省青年骨干教师项目(2013GGJS-167)

摘　　要：为探讨土壤磁化率对有机质含量的指示作用,对许昌市典型区域土壤磁化率与有机质含量的相关性进行研究,结果显示：研究区域土壤样品Xlf变化范围在15×10～-8125×10-8m3/kg,平均值为64×10-8m3/kg,说明研究区土壤样品中磁性矿物含量较低。Xfd值在4.67%～26.67%之间,平均值为10.02%,反映了样品中超顺磁颗粒含量很高,说明研究区域土壤磁性矿物主要由自然成土作用形成,现代工业生产活动和人类的生活活动贡献较小。土壤有机质含量范围为3.74～31.93 g/kg,均值为17.09 g/kg。研究区域土壤磁化率与有机质含量呈不显著正相关性,反映了在长期人工施肥活动和城市化进程中人类活动导致土壤各理化因子之间发生学联系的弱化。In order to discuss the indication ability of magnetic susceptibility to organic matter content of soil,soil samples were collected from typical areas of Xuchang and correlations between magnetic susceptibility and organic matter content of soils were examined.The results showed that soil magnetic minerals in soils from Xuchang formed mainly by pedogenesis,Xlfvalues ranged from 15×10-8～125×10-8 m3/kg with a mean of 64×10-8 m3/kg,Xfdvalues ranged from 4. 67% ～ 26. 67% with a mean of 10. 02%. The soil organic matter contents were from 3. 74 g/kg to 31. 93 g/kg with a mean was 17. 09 g/kg. There no positive correlation was found between soil magnetic susceptibility and soil organic matter content,which may be because of that correlations of physical and chemical factors of soil were attenuated by long-term influences of human activities.

关 键 词：土壤磁化率 有机质 频率磁化率 人类活动 

分 类 号：S153[农业科学—土壤学]