摘要
利用多目标区域土壤地球化学调查取得的土壤地球化学数据及安徽省第二次土壤普查数据对滁州地区土壤有机碳储量分布特征、有机碳密度及有机碳储量时空变化规律等问题进行了研究。结果表明滁州地区近30年间土壤有机碳储量减少了8.39Mt。区内大部分地区土壤碳储量表现出"碳源"效应,仅局部地区呈现出"碳汇"效应。滁州地区0～0.2m表层土层有机碳储量为53.74Mt,有机碳密度平均为3.42kg/m2,略低于全国平均水平。滁州地区0～1.8m表层土层中,72%的土壤有机碳储量赋存于0～1.0m土壤中。通过对滁州地区不同统计单元的中层土壤有机碳储量及密度的分析,系统查明了土壤有机碳的分布特征,为土壤碳循环研究提供了参考依据。
Based on the soil geochemical data obtained by multi-purpose regional soil geochemical survey and the data of the second soil survey in Anhui Province, this paper studies the distribution characteristics of soil organic carbon storage, organic carbon density and temporal-spatial variation regulation of soil organic carbon storage in Chuzhou area. The results show that the soil organic carbon storage of the Chuzhou area has reduced for 8.39 Mt in recent 30 years. Soil carbon storage shows a ＂carbon source＂ effect in most areas and a ＂carbon sink＂ effect in some areas. In Chuzhou area, soil organic carbon storage is 53.74Mr and average organic carbon density is 3.42 kg/m^2 in 0 -0.2 m surface soil layers, which are slightly lower than the national average levels. In 0-1.8 m surface soil layers in this area, most of the soil organic carbon storage occurs in 0- 1.0 m surface soil layers. By analyzing soil organic carbon storage and organic carbon density for different statistical units in Chuzhou area, the paper systematically studies the distribution characteristics of soil organic carbon and provides some references for researching the soil organic carbon cycle.
出处
《资源调查与环境》
2013年第1期63-70,共8页
Resources Survey & Environment
基金
多目标区域地球化学调查项目(编号:基GZTR001-07)
"安徽省生态态业地质调查评价方法技术研究与应用"创新团队资助
关键词
土壤有机碳
碳密度
碳储量
滁州地区
soil organic carbon
carbon density
carbon storage
Chuzhou area
