土壤质量演变是自然过程与人类活动共同作用的结果。
The changes of soil quality are the results of both natural processes and human activities.
本文综述了土壤质量的内涵、土壤质量研究的重要性与重点、土壤质量演变的规律及土壤退化的途径。
This paper reviewed the intension of soil quality, discussed the importance of studying soil quality, and analyzed development laws of soil quality and the ways of soil degradation.
土壤质量演变的自然过程是漫长的和相对稳定的，而人类活动对土壤质量的影响则是更为强烈的因素。
Human activities are the intensive factors in soil quality, while, the natural process is relatively long and steady.
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