不同土壤层次氧化甲烷的潜力也有差异，表层土比下层土高。
Different soil layers had various potential of methane oxidation. The surface layers were higher than the low layers.
分别采制上述不同土壤类型或林型下的土壤表层和表下层的原状土祥，制取土壤薄片，进行土壤微形态学比较研究。
Undisturbed soils samples obtained from surface and subsurface soil layers under different forests were used to make thin sections and study micro-morphological characteristics.
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