margin annular
边缘环形
以上为机器翻译结果，长、整句建议使用 人工翻译 。
The results showed that the content of organic carbon in soil profile and the storage of organic carbon in different soils varied obviously from margin to center of the annular wetland.
结果表明，从环型沼泽湿地边缘向中心，土壤剖面有机碳含量和有机碳储量变化明显。
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