河南商丘地区土壤有机碳密度及其空间分布特征  

Soil organic carbon density and distribution in Shangqiu area, Henan Province

作　　者：张妍[1,2] 谷志云 裴瑞亮[1,2] 杨运召 陈合青 ZHANG Yan;GU Zhiyun;PEI Ruiliang;YANG Yunzhao;CHEN Heqing(Henan Institute of Geological Survey,Zhengzhou 450001,Henan,China;Henan Geochemical Ecological Restoration Engineering Research Center,Zhengzhou 450001,Henan,China)

机构地区：[1]河南省地质调查院,河南郑州450001 [2]河南省地球化学生态修复工程技术研究中心,河南郑州450001

出　　处：《矿产勘查》2021年第10期2153-2160,共8页Mineral Exploration

基　　金：中国地质调查局项目“河南商丘地区多目标地球化学调查”(12120113000900)资助。

摘　　要：利用多目标地球化学调查数据,对商丘地区表层(0~20 cm)、中上层(0~100 cm)和全层(0~200 cm)土壤有机碳密度及其储量进行了估算,并分析不同土壤类型、地貌类型及土地利用类型下土壤有机碳密度的空间分布特征及影响因素。结果表明:研究区土壤碳库以无机碳为主,表层、中上层、全层有机碳密度分别为2.34 kg/m^(2)、2.82 kg/m^(2)、7.89 kg/m^(2),均低于全国平均水平。在不同土壤类型、地貌类型及土地利用类型间有机碳密度存在显著差异,土壤有机碳含量及分布受气候及土壤理化性质影响不明显,温度是主要影响因子。Based on the multi-target regional geochemical survey,SOCD(soil organic carbon density)in three layers including surface layer from 0~20 cm,middle layer from 0~100 cm and deep layer from 0~200 cm in Shangqiu area were estimated.Meanwhile,the spatial distribution of soil organic carbon storage and density and its influencing factors were determined based on classification of soil types,land patterns and landscape types.The results showed that the carbon pool in the study area is still dominated by the inorganic carbon.The SOCD is 2.34 kg/m^(2),2.82 kg/m^(2) and 7.89 kg/m^(2),respectively,and it is lower than the national level.There are great difference among soil types,landscape types and land use patterns.The content and distribution of soil organic carbon were not significantly affected by climate and soil physical and chemical properties,and temperature was the main influencing factor.

关 键 词：土壤有机碳密度 分布特征 影响因素 商丘地区 河南 

分 类 号：S15[农业科学—土壤学]