Soil carbon: Deep ploughing benefits
Soil carbon: Deep ploughing benefits
复制标题
土壤碳：深耕的好处
DOI：
10.1038/nclimate3072
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发表时间：
2016
影响因子：
30.7
通讯作者：
Brown A.
中科院分区：
文献类型：
--
作者：
Brown A.
来自德国Thünen气候智能农业研究所的Viridiana Alcántara及其同事对底土作为碳储存的潜力感兴趣，因为它们通常具有较低的土壤有机碳（SOC）浓度，因此具有较高的储存潜力。为了解决这一问题，Alcántara等人研究了深翻（55-90 cm）埋下的表层土壤中有机碳的储存和稳定性，将表层附近形成的有机碳转移到底土中，将缺乏有机碳的底土物质转移到“新”表层土壤中。与相邻的对照地块相比，深翻土壤在翻耕45年后的总土壤剖面中平均含有42±13%的有机碳。然而，新的表层土壤仍然是15%的有机碳耗尽表明长期的有机碳积累潜力的表层土壤。这些研究结果表明，深耕可以通过扩大可用的SOC存储空间，有助于SOC的封存。AB
Viridiana Alcántara from the Thünen Institute of Climate-Smart Agriculture, Germany and co-workers are interested in the potential of subsoils as carbon stores as they have generally low soil organic carbon (SOC) concentrations and thus high storage potential. To address this question Alcántara et al. study storage and the stability of SOC in topsoils buried by deep ploughing (55–90 cm), translocating SOC formed near the surface into the subsoil and SOC-poor subsoil material into the ‘new’topsoil.Compared with adjacent control plots deep-ploughed soils contained on average 42±13% more SOC in the total soil profile 45 years after ploughing. However, the new topsoil was still SOC depleted by 15% suggesting long-term SOC accumulation potential in the topsoil. These findings indicate that deep ploughing can contribute to SOC sequestration by enlarging the available SOC storage space. AB