NTAs在生态系统中具至关重要作用，应开展农药风险评估,以避免或减少农药使用对其造成的不利影响。目前我国开展相关研究少，更未形成技术法规和评估体系。本研究参照危险墒值评价法，拟1）选取至少15种农药对5目20种以上NTAs进行效应研究，确定2种指示生物、5种增加测试物种；比较农药对指示生物不同生长阶段和各种实验条件的剂量效应关系确定指示生物的标准测试方法；比较剂量效应概率分布计算模型确定评估终点及其计算方法，并分析SSD方法在效应评估中的作用。2）针对农田和田边生境进行暴露评估，研究农药多次施药、飘移、植被覆盖等影响因子，评定科学合理数值。3）风险表征中建立合理触发值和不确定因子。研究成果将推进我国农药风险评估理论研究和技术发展。

Non-target arthropods (NTAs) plays a vital role in the terrestrial ecosystem. It is necessary to reduce the adverse effects of pesticides during applied in control of the pest.In Chins, few related studies have been carried out, and no technical guidance and evaluation system were built up. In this study, hazarous value approach will be selected. The major research contents are as follows :1) More than 15 pesticides covering 5 taxonomic orders will be carried out the effect evaluation towards more than 20 kinds of NTAs, according which two indicator species will be recommendeed, five kinds of extended test species will be selected; Dose-response relationships for a range of NTAs and pesticides and for related species varying in different life stages will be compared to establish the standard methods and the end points, in the mean time the SSD method will be analyzed in effect evaluation. 2) Emphsising on building up the identification of multi-application factor,drift factor and vegetation factor in the evaluation of expose of pesticides in in-field or off-field ecosystem;3) Building up trigger value in risk characterization. This study tries to establish NTAs pesticide evaluation system, provding original data in support of policy and registration, which could imporve the development of risk assessment of pesticide in the terrestrial ecosystem.