文献类型：期刊文献

中文题名：赤峰市敖汉旗土壤有机碳含量的垂直分布及其影响因素

英文题名：Vertical distribution of soil organic carbon content and its influencing factors in Aaohan,Chifeng

作者：李龙[1] 秦富仓[1] 姜丽娜[2] 姚雪玲[3]

第一作者：李龙

机构：[1]内蒙古农业大学沙漠治理学院,呼和浩特010011;[2]中国林业科学研究院林业新技术研究所,北京100091;[3]中国林业科学研究院林业荒漠化研究所,北京100091

年份：2019

卷号：39

期号：1

起止页码：345-354

中文期刊名：生态学报

外文期刊名：Acta Ecologica Sinica

收录：CSTPCD;;Scopus;北大核心:【北大核心2017】；CSCD:【CSCD2019_2020】；

基金：国家自然科学基金青年基金项目(41807079)

语种：中文

中文关键词：土壤有机碳;土壤深度;广义相加模型(GAM);半干旱区

外文关键词：soil organic carbon;soil depth;Generalized Additive Model(GAM);semi-arid zone

分类号：S153.6

摘要：选取内蒙古赤峰市敖汉旗为研究对象,运用广义相加模型—分析敖汉旗0—100 cm深度土壤有机碳含量的空间变异特征,分析影响土壤有机碳空间变异的主导因素。结果表明,0—100 cm深度土壤有机碳含量的变化范围为0.23—20.71 g/kg,且随着土壤深度的增加有机碳含量逐渐降低。广义相加模型可以较为准确地解释土壤有机碳含量与环境因素之间的关系。植被因素的变化是影响表层土壤有机碳含量最重要的因素;在深层土壤中,含水率的变化是影响有机碳含量的主要因素。影响土壤有机碳空间变异的主导因素随着土壤深度的变化也表现出较大的差异。
In this study,a soil survey was carried out in Aohan County in Chifeng,Inner Mongolia. A generalized additive model( GAM) was used to analyze the spatial variability of the soil organic content( SOC) in soil depths of 0-100 cm.The results showed that SOC varied from 0. 23 to 20. 71 g/kg in 0-100 cm soil depths,and decreased gradually with increasing soil depths. The GAM fitted the relationship between SOC and environmental factors well. With increasing soil depth,SOC also varied. Vegetation was the dominant factor affecting SOC in surface soil;soil moisture was the dominant factor affecting SOC in deeper soil. The dominant factors that influenced the variation of soil organic carbon also showed considerable differences with increasing soil depth.