by urban productivity
按城市生产力划分
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Different degrees of soil compaction were caused by frequently human activities in urban forest in recent years, and thus affected forest productivity and soil carbon balance.
近年来城市森林人为活动频繁，对林地土壤造成不同程度的压实，从而影响林分生产力及森林土壤碳平衡。
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