高纪超,朱平,李强,彭畅,张秀芝,焦云飞,高洪军,武俊男,杨洋

• 1:吉林省农业科学院/中国农业科技东北创新中心
• 2:吉林农业大学

摘要(Abstract)：

选取黑钙土、黑土（薄层）、黑土（厚层）、风沙土4种不同类型的土壤剖面，探究土壤有机碳（SOC）、胡敏酸（HA）、富里酸（FA）和胡敏素（HM）在不同类型土壤剖面中的分布规律，对于科学评价不同土壤质量、土壤固碳能力的差异有重要意义。与表层（0～20 cm）相比，黑钙土、黑土（薄层）、黑土（厚层）、风沙土深层（80～100 cm）的SOC含量分别显著降低了21.7%、26.9%、41.4%、23.6%(P<0.05),pH分别由5.2、5.9、6.1、4.8升高至7.5、7.2、8.4、7.6,HA含量分别降低了34.9%、40.4%、46.6%、11.4%,FA含量分别降低了52.2%、36.2%、73.3%、59.0%,HM含量分别降低了32.2%、18.3%、37.2%、30.7%(P<0.05)。HA/FA随土层加深而逐渐升高，黑钙土、黑土（厚层）、风沙土从0～20 cm至80～100 cm分别显著提高了42.9%、161%、101%(P<0.05)。而80～100 cm黑钙土、黑土（薄层）、黑土（厚层）、风沙土中HA和FA色调系数（△lgK）比0～20 cm土层分别显著降低了20.6%、29.9%、34.9%、40.3%和21.8%、17.1%、21.8%、18.9%(P<0.05)。在剖面垂直尺度上，有机质和腐殖质含量均呈下降趋势，厚层黑土剖面平均SOC、pH、腐殖物质含量及色调系数均高于其他3种类型土壤，剖面土壤质量较高，但HA与FA结构较简单。

关键词(KeyWords)： 土壤剖面;土壤腐殖物质;土壤有机质;分布

Abstract:

Keywords:

基金项目(Foundation): 吉林省农业科学院（中国农业科技东北创新中心）基本科研经费项目（KYJF2023DX011）;; 科技部基础资源调查专项（2021FY100402）

作者(Author): 高纪超,朱平,李强,彭畅,张秀芝,焦云飞,高洪军,武俊男,杨洋

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