【摘要】 利用安徽省多目标区域地球化学调查获取的土壤全碳和有机碳数据,采用"单位土壤碳量"方法计算土壤碳储量以及土壤固碳潜力。结果显示,研究区表层(0~0.2 m)土壤固碳量潜力为237.48 Mt,其中土壤有机碳固碳量潜力为141.67 Mt,土壤无机碳固碳量潜力为95.81 Mt;中层(0~1.0 m)土壤固碳量潜力为1104.61 Mt,其中土壤有机碳固碳量潜力为469.32 Mt,无机碳固碳量潜力为635.28 Mt。与全国第二次土壤普查比较,近30年间区内表层土壤有机碳储量增加了7.07 Mt,本区表层土壤有机碳总体为"碳汇"区。碳汇区主要分布在江淮分水岭(六安—滁州一线)以北地区;碳源区则分布于淮河以北固镇县周围及淮河沿岸局部地区。此项工作为进一步探讨安徽省土壤固碳能力及土壤固碳减排潜力提供科学依据。更多还原

【Abstract】 Soil carbon storage and sequestration potential(CSP) were calculated based on the data of total carbon and organic carbon by using USCA(Unit Soil Carbon Amount) method combined with the multi-purpose regional geochemical survey in Anhui Province. Through the calculation, CSP at topsoil(0-0.2 m) was 237.48 Mt, including141.67 Mt of organic carbon and 95.81 Mt of inorganic carbon. CSP at subsoil(0-1.0 m) was 1104.61 Mt, including469.32 Mt of organic carbon and 635.28 Mt of inorganic carbon. In comparison with the carbon data obtained from the Second National Soil Survey, organic carbon storage at topsoil increased by 7.07 Mt over the past 30 years, and topsoil was generally the area of total carbon sink. The area of carbon sink was mainly distributed in the north of the watershed between Yangtze and Huai River(along Lu’an and Chuzhou). The area of carbon source was located around Guzhen County(north to Huai River) and some places along Huai River. This research laid a scientific foundation for further study of soil CSP and for carbon sequestration and emission reduction in Anhui Province.更多还原