Measuring points triad quality assessment

Ecological assessment of the quality of the waterbed in Flanders according to triad consists of three different evaluations that are combined into one final assessment: a physical chemical, an ecotoxicological and a biological evaluation. The quality of a waterbed is compared to a reference soil that is close to its natural state (Deckere, De Cooman et al. 2000). The more hatches that show a deviation from the reference soil, the worse the waterbed quality. Since 2016, 300 monitoring sites have been sampled every 6 years within the waterbed monitoring network (VMM), previously 600 monitoring sites every 4 years. The TKB gives an existing risk of contamination.基于三指标法（Triad）的佛兰德斯地区水底床质量生态评估，通过整合三类不同评价以生成最终综合结果，分别为理化评价、生态毒理评价与生物评价。该评估以接近自然本底状态的参考土壤（reference soil）为参照基准（引自Deckere、De Cooman等，2000年）。与参考土壤存在偏差的hatches数量越多，水底床质量越差。自2016年起，佛兰德斯水底床监测网络（VMM）内的300个监测点位每6年开展一次采样；此前该网络的600个监测点位每4年采样一次。TKB可表征当前存在的污染风险。