土壤质量.污染物对土壤植物群影响的测定.用于评定土壤质量的植物的叶脂肪酸组成

[中文适用范围]： 该文件描述了一种通过确定在土壤中生长的植物物种叶子的脂肪酸组成来比较土壤质量的方法。 该方法无法确定 Omega-3 指数的最佳值，因此不能用于确定特定区域土壤的内在质量（视为均质）。 该方法只能用于比较不同地区之间的土壤质量。 本方法适用于： ——污染场地的土壤； ——改良土壤； ——修复后的土壤； ——含有废物的土壤（例如泥浆、粪肥、污泥或堆肥）。 或者，可以通过测定在受控条件（即光控室）下在这些土壤中生长的莴苣幼苗的 Omega-3 指数并将这些值与从对照土壤获得的值进行比较来评估土壤质量（见附件 B）。 [外文原描述]： This document describes a method to compare the quality of soils by determining the fatty acid composition of the leaves of plant species grown in these soils. This method does not make it possible to determine an optimal value of the Omega-3 index and, therefore, cannot be used to determine the intrinsic quality of a soil from a specific area (regarded as homogeneous). The method can only be used to compare the quality of soils between various areas. This method is applicable to: — soils from contaminated sites; — amended soils; — soils after remediation; ? soil with waste products (e.g . slurry, manure, sludge or composts). Alternatively, the quality of soils can be assessed by determining the Omega-3 index of Lactuca sativa seedlings grown in these soils under controlled conditions (i.e. phytotronic chamber) and by comparing these values to those obtained from control soils (see Annex B).