Soil organic matter is a very important part of forest ecosystem productivity, and is also a very important tache of biological cycling in forest ecosystem.
土壤有机质为森林生态系统生产力构成的重要部分，是森林生态系统生物循环中的重要环节之一。
Soil organic matter is a very important part of forest ecosystem productivity, and is also a very important tache of biological cycling in forest ecosystem.
土壤有机质为森林生态系统生产力构成的重要部分，是森林生态系统生物循环中的重要环节之一。
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