| 地点因素对中国地带性土壤表层有机碳含量的影响 |
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| 引用本文： | 戴万宏,黄耀. 地点因素对中国地带性土壤表层有机碳含量的影响[J]. 安徽师范大学学报(自然科学版), 2006, 29(1): 64-69 |
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| 作者姓名： | 戴万宏 黄耀 |
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| 作者单位： | 安徽师范大学,环境科学学院,安徽,芜湖,241000;中国科学院,大气物理研究所,北京,100029;中国科学院,大气物理研究所,北京,100029 |
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| 基金项目： | 中国科学院知识创新工程项目 , 国家重点基础研究发展计划(973计划) , Special project grants , 安徽师范大学校科研和教改项目 |
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| 摘 要： | 利用中国第二次土壤普查确定的886个典型地带性土种剖面资料,通过统计分析方法研究了地点因素(土纲、质地、海拔、酸碱度和土地利用方式)对地带性土壤表层有机碳含量的影响.结果表明,地点因素显著影响地带性土壤表层有机碳含量;地点因素对耕作土壤表层有机碳的影响明显强于非耕作土壤;地点因素分别解释耕作土壤和非耕作土壤表层有机碳含量变异的24.7%和48.5%.耕作土壤和非耕作土壤有机碳含量的主要控制因素有所不同.
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| 关 键 词： | 地点因素 土壤有机碳 地带性土壤 方差分析 典型相关分析 |
| 文章编号： | 1001-2443（2006）01-0064-06 |
| 收稿时间： | 2005-05-25 |
| 修稿时间： | 2005-05-25 |
EFFECTS OF SITE VARIABLES ON SURFACE SOIL ORGANIC CARBON CONCENTRATION IN ZONAL SOILS OF CHINA |
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| DAI Wan-hong,HUANG Yao. EFFECTS OF SITE VARIABLES ON SURFACE SOIL ORGANIC CARBON CONCENTRATION IN ZONAL SOILS OF CHINA[J]. Journal of Anhui Normal University(Natural Science Edition), 2006, 29(1): 64-69 |
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| Authors: | DAI Wan-hong HUANG Yao |
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| Affiliation: | 1. College of Environmental Sciences, Anhui Normal University, Wuhu 241000, China;2. Institute of Atmospheric Physics, Chinese Academy of Sciences, Bcijing 100029, China |
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| Abstract: | An understanding of influences of site variables on surface soil organic carbon(SOC)concentrationis i mportant to plan future land use for carbon sequestration and sustaining agriculturalproduction.This study was conducted to clarify the effects of site variables(soil order,texture,altitude,acidity/alkalinity and land use) on surface SOC concentration of zonal soils of China.Theresults showed that the SOCconcentration was generally correlated significantly with the selected sitevariables(p<0.001) and the correlation was stronger in un-cultivated soils than in cultivated soils.The ANOVAfactorial model esti mated that the contribution of site variables to the variation of SOCconcentration was 24.7 %in cultivated soils,48.5 %in un-cultivated soils,which was 6.6 %and 10.4 %higher thanthat described by univariate multiple regressionanalysis,respectively.Relatively weakcorrelations and less explainable variance observed in cultivated soils suggest that actual controllingfactors over SOCconcentration differ fromthose in un-cultivated soils. |
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| Keywords: | site variable SOC zonal soil ANOVA canonical correlation analysis |
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