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土壤侵蚀对农田中土壤有机碳的影响

DOI: 10.11820/dlkxjz.2004.02.010, PP. 77-87

Keywords: 农田土壤,土壤固碳,土壤侵蚀,土壤有机碳(SOC)

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Abstract:

碳主要在通气状态下释放出CO2以温室效应的形式影响全球变化。当前,农田土壤固碳过程是土壤碳循环研究中的一个前沿领域,其中农田土壤再分布过程能否导致土壤固碳已引起科学上、政治上以及社会上广泛的兴趣。本文从不同的尺度阐述土壤再分布过程对土壤有机碳的影响。分别阐述土壤侵蚀和再沉积过程在全球碳循环,陆地碳库研究中的作用,土壤侵蚀与农田景观土壤有机碳动态、活性组份以及碳通量之间的关系,土壤再分布过程引起的土壤固碳机理。在此基础上指出今后迫切需要解决的问题。

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