相同温度与土壤水分条件下，CO2排放速率相对值大小随土壤有机碳含量增加而增加。
And under the same temperature and moist condition, the relatively value of CO2 released rate was increasing with the soil organic carbon content.
人工林地、草地土壤有机碳含量均随土壤深度增加而减少。
The soil organic carbon contents of plantation lands and grassplots decreased with the increase of soil deepness.
因烧垦而引起的土地利用变化仍然是碳素释放的主要来源，从而导致了土壤有机碳含量下降和土壤质量退化。
Land use change is still a major source of carbon dynamics emission due to burning and cultivation, which caused to decline soil organic carbon contents in soils and degrade soil quality.
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