MULTI-PURPOSE REGIONAL GEOCHEMICAL SURVEY AND SOIL CARBON RESERVES PROBLEM:EXAMPLES OF JIANGSU,HENAN,SICHUAN,JILIN PROVINCES AND INNER MONGOLIA
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摘要: 在全国多目标区域地球化学调查获得土壤高密度和大数据量碳分布数据基础上,提出"单位土壤碳含量"概念和建立土壤碳储量实测计算方法,为精确计算土壤碳储量和估算土壤碳库提供了新的途径。依据"单位土壤碳含量"进行土壤碳储量实测计算,可以按照土壤类型、土地利用分类、生态系统及自然景观等任意划分方式,从不同途径取得市县、省区、流域及至国家土壤碳储量,并在各级次上进行土壤碳库问题研究,解决土地利用、农业种植和环境评估中的实际问题。文章以江苏、湖南、四川、吉林、内蒙古为例进行土壤有机碳储量计算,结果表明,全国土壤碳储量分布不均匀。Abstract: Based on the huge amount of soil carbon data high densely obtained by national multi-purpose regional geochemical survey the concept of unit carbon content was put forward and the measurement calculation method of soil carbon reserves was set up.This provided a new approach to calculate soil carbon reserves accurately and estimate soil carbon pool.Based on the concept of unit carbon content we can calculate soil carbon reserves using regional survey data according to soil type,land use,ecosystem,natural landscape,and any other classification system respectively so as to achieve soil carbon reserves at county,provincial,and national levels,which can be used to solve soil carbon pool problems on land use,agricultural cultivation,and environmental assessment at different levels.This paper lists the calculation results of soil carbon reserves from Jiangsu,Henan,Sichuan,Jilin Provinces and Inner Mongolia.It is clear that soil carbon reserves is in homogenous at the national level.
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