福建省土壤有机碳空间分布特征研究

Spatial Distribution of Soil Organic Carbon in Fujian Province

摸清土壤有机碳的含量和空间分布是碳循环研究基础问题之一。基于第二次全国土壤普查数据,选取福建省作为研究区域,估算该省土壤有机碳空间分布特征,结果表明,福建省范围内,有机碳含量自内陆到沿海地区逐渐减少,闽北地区最高,闽西地区次之,最低为闽中沿海地区;表土层土壤有机碳含量与次表层土壤有机碳之间存在显著性差异,而淋溶层与母质层之间不存在显著性差异。

Finding out the content and spatial distribution of soil organic carbon is one of the fundamental issues in carbon cycle research.Based on the second national soil census data,we selected Fujian Province as the research area to estimate the spatial distribution characteristics of soil organic carbon in Fujian Province.On the surface,in Fujian Province,the spatial distribution of organic carbon content decreased gradually from inland to coastal areas,the highest in the northern part of Yunnan,the second in western Yunnan,and the lowest in the coastal area of central Guizhou.There was a significant difference between the topsoil and the subsurface’s soil organic carbon,there was no significant difference between the leaching layer and the parent layer.