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Position: Home > Articles > Change of Soil Organic Carbon in Different Soil Depths in Semi-arid Area Bulletin of Soil and Water Conservation 2014,34 (4) 118-122+2

半干旱区不同土层深度土壤有机碳变化

作  者：
李龙;姚云峰;秦富仓;郭月峰;HABURA Borjigin;常伟东
单  位：
内蒙古农业大学生态环境学院;赤峰市敖汉旗林业局;日本国立环境研究所地理环境研究中心
关键词：
海拔高度;土壤有机碳;土层;半干旱区
摘  要：
选择内蒙古自治区赤峰市敖汉旗黄花甸子流域为研究对象,运用地统计学与ArcGIS空间分析工具相结合的方法研究了不同土层深度土壤有机碳含量、密度以及储量的变化情况。结果表明,不同土层有机碳含量与密度由高到低均表现为:表层(0—20cm)>中层(20—60cm)>底层(60—100cm)。表层土壤碳密度随海拔高度的增加而下降,有机碳含量呈现先增加后降低的趋势;底层土壤有机碳含量随海拔高度的改变无明显变化。同时海拔高度对土壤有机碳的影响也随土壤深度的增加而减小。研究区有机碳总储量为2.04×105 t,不同土层有机碳储量由高到低表现为:中层(8.56×104 t)>底层(6.41×104 t)>表层(5.47×104 t)。土壤有机碳储量与其对应海拔高度下面积的大小具有显著相关性。
译  名：
Change of Soil Organic Carbon in Different Soil Depths in Semi-arid Area
作  者：
LI Long;YAO Yun-feng;QIN Fu-cang;GUO Yue-feng;HABURA Borjigin;CHANG Wei-dong;College of Ecology and Environmental Science,Inner Mongoli Agricultural University;Center for Global Environmental Research,National Institute for Environmental Studies;Forest Bureau in Aohan Banner of Chifeng City;
关键词：
altitude;;soil organic carbon;;soil layers;;semi-arid area
摘  要：
We selected Huanghuadianzi watershed in Aohan Banner of Chifeng City in Inner Mongolia as the research area and analyzed the changes in soil organic carbon content,density and storage in different soil layers through geostatistical and ArcGIS methods.The results showed that soil organic carbon content and density decreased from the surface layers to the middle layer then to bottom layers;Carbon density of soil surface decreased with the increase of altitude,but the underlying soil organic carbon content had no obvious change with the change of altitude,moreover,carbon content increased first and then decreased while the effects of altitude on soil organic carbon also decreased with the increase of soil depth.The organic carbon reserve of the study area was 2.04×105 t,and the soil organic carbon reserves of different soil layers were as follows:the middle layer(8.56×104 t)>bottom(6.41×104 t)>surface(5.47×104 t).Soil organic carbon storage has significant correlation with its corresponding area of the given altitude.

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