In agriculture, the use of soil biodegradable mulch films could represent an eco-friendly alternative to conventional plastic films. However, soil biodegradable mulch films incorporated into the soil through tillage, being not only a physical but also a biogeochemical input, is expected to influence the soil quality by affecting its functions. Therefore, the eco-compatibility of these biodegradable plastics needs to be evaluated for their impact on different soil functions. To understand the effect of biodegradable plastics on soil quality (i.e. microbial biomass, nitrogen cycle, and activity of soil enzymes involved in the biochemical processes of carbon and nitrogen), we added increasing quantities of biodegradable plastics in two different soils: a loamy (Cambisol) and sandy (Arenosol) soil. The results highlight that the carbon added through the biodegradable plastics influenced the processes linked to carbon and nitrogen cycles. Significant effects were observed mainly with the highest dose of biodegradable plastics added (1%), resulting in a higher growth of microbial biomass, increased carbon mineralisation, and increased immobilisation of available nitrogen. The results also underline the importance of evaluating the impact of biodegradable plastics in different soils because all the processes considered are also influenced also by soil physicochemical characteristics.

在农业中，使用土壤可生物降解地膜可以代表传统塑料薄膜的环保替代品。然而，通过耕作掺入土壤中的土壤可生物降解地膜不仅是物理输入，也是生物地球化学输入，预计会通过影响其功能来影响土壤质量。因此，需要评估这些可生物降解塑料的生态相容性，以了解它们对不同土壤功能的影响。为了了解可生物降解塑料对土壤质量（即微生物生物量、氮循环和参与碳和氮生化过程的土壤酶的活性）的影响，我们在两种不同的土壤中添加了越来越多的可生物降解塑料：壤土（Cambisol ) 和沙质 (Arenosol) 土壤。结果强调，通过可生物降解塑料添加的碳影响了与碳和氮循环相关的过程。主要在添加最高剂量的可生物降解塑料 (1%) 时观察到显着影响，导致微生物生物量的更高增长，增加碳矿化，并增加可用氮的固定。结果还强调了评估可生物降解塑料在不同土壤中的影响的重要性，因为所有考虑的过程也受土壤物理化学特征的影响。增加碳矿化，增加可用氮的固定。结果还强调了评估可生物降解塑料在不同土壤中的影响的重要性，因为所有考虑的过程也受土壤物理化学特征的影响。增加碳矿化，增加可用氮的固定。结果还强调了评估可生物降解塑料在不同土壤中的影响的重要性，因为所有考虑的过程也受土壤物理化学特征的影响。