土壤生物活性，是指土壤中各种生物生活强度的总和。土壤生物的活性在很大程度上取决于土壤的物理性质和化学性质，主要是土壤温度、湿度、通气状况和气体组成、pH以及有机质和无机物质的数量和组成等。
通过对土壤呼吸强度和土壤酶活性的测定，研究了新型杀虫剂啶虫脒对旱地土壤生物活性的影响。
Effect of a new pesticide, acetamiprid, on biological activity in upland soil was studied through analysis of soil enzyme activities and soil respiration.
土壤生物和酶活性在改善土壤结构、养分循环、有机质分解和保持中起重要作用。
Soil organisms as well as enzyme activities perform important functions in soil, including structure improvement, nutrient cycling, and organic matter decomposition and retention.
本文通过阐述重金属污染对土壤生物及土壤酶活性的影响，揭示了重金属污染对土壤生态系统的危害。
This article expounds the effects of pollution of heavy metals on soil organisms and soil enzyme activities, discovers the harm of pollution of heavy metals on soil ecosystem.
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