超标区 meaning in Chinese

nonattainment area

Many organic and inorganic contaminants of the shallow groundwater in city zone and close suburb of beijing were investigated on the spot , more than 100 samples were got . by spatial analysis , modeling calculation and spatial interpolation , maps of each contaminant distributions are made and divided into two parts , the beyond the standard and below the standard . with those maps , the total environmental quality of the groundwater is evaluated
利用本系统提供的空间分析、模型运算等分析工具，对2000 2001年北京城近郊区浅层地下水环境污染进行了如下评价分析工作： ( 1 )对地下水调查中检测出的各种有机污染物和无机污染物进行了空间插值分析，划定了超标区的分布范围； ( 2 )对2000年枯水期的浅层地下水综合环境质量进行了分析和评价； ( 3 )对1996 、 1999和2000年的综合水质评价图进行了对比分析，发现北京城近郊区浅层地下水环境综合质量逐年下降；预知未来几年内，浅层地下水环境质量不会有明显好转。