资源环境承载能力预警城市化地区专项评价——以京津冀地区为例
周道静, 王传胜

Specific evaluation of resource and environmental carrying capacity of urbanized areas for early-warning: A case study of the Beijing-Tianjin-Hebei region
Daojing ZHOU, Chuansheng WANG
表1 城市黑臭水体污染程度分级标准
Tab.1 Classification standard of pollution degree of urban black-odor water bodies
特征指标 轻度黑臭 重度黑臭
透明度/cm 25~10* <10*
溶解氧/(mg/L) 0.2~2.0 <0.2
氧化还原电位/mV -200~50 <-200
氨氮/(mg/L) 8.0~15 >15