现有的材料说明，土壤年龄对土壤的氮素形态分布没有明显的影响。
SummaryResults available showed that soil age did no significant effect on the distribution of the forms of soil organic nitrogen.
文章研究了安徽省升金湖湿地土壤有机碳储存和分布特征及其与土壤氮素的关系。
The storage and profile distribution as well as the horizontal spatial variation of wetland soil organic carbon(SOC) in the Shengjin Lake Wetland were studied in this paper.
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