土壤质量. 土壤污染物对土栖生物摄食活性的影响的试验方法. 诱饵层试验

[中文适用范围]： 本标准规定了一种测定土壤污染物对土壤居住生物取食活动影响的方法。 该方法适用于现场测试，也可用于实验室分析。 重要目的是评估化学物质对土壤生态系统的长期影响。 [外文原描述]： ISO 18311:2016 specifies a technique for determining the effects of anthropogenic impacts (e.g. substances) in the context of the prevailing environmental conditions on the feeding activity of soil organisms in the field. In addition, the use of this method for monitoring the biological quality of soil is described (see Annex A). The breakdown of organic matter by soil invertebrates and microorganisms is a crucial process that determines important soil functions such as nutrient availability for plants and the maintenance of soil fertility. In addition, decomposing plant litter provides habitats and food for a wide range of organisms, thus supporting biodiversity and ecosystem services [33][34]. ISO 18311:2016 is applicable to all soils in which soil organisms are active. The use of the bait-lamina test is independent from whether there is a litter layer or not. The sampling design of field studies in general is specified in ISO 23611‑6 (see also Reference [20]). The design can vary according to the aim of the study as well as conditions (e.g. soil properties, contamination, etc.) of the site to be investigated. ISO 18311:2016 is not applicable for semi-terrestrial or very shallow soils. It can be difficult to use it under extreme climatic or geographical conditions (e.g. in high mountains).