采用水体表观污染指数法评价苏州城市水体表观质量

摘要

以苏州城区河道为例,运用水体表观污染指数法(SPI)分别从整体区域、片区之间及典型河道3个层次进行分析并评价苏州城区河道水体表观质量.结果表明:在研究期间,苏州城区河道整体表观质量具有向好的趋势;不同片区水体表观质量具有明显差异,其中城南片、古城西北片区最差,山塘片区最优,高新区优于古城区;典型河道彩香桥始终优于张广桥、黄花泾桥,黄花泾桥表观质量波动较大,总体处于较差等级.表观污染指数法能够多层次评价水体表观质量,科学阐述表观污染现象的发展历程及评价水体修复工程成效.%Taking the urban river channels in Suzhou as an example, this paper used the sensation pollution index method (SPI) to investigate the apparent quality of intraregional watercourse, interregional watercourse and typical watercourse, respectively. The results showed that: the overall apparent quality of rivers in Suzhou had a good trend during the study period;the apparent quality of watercourse in different areas had obvious differences, among which the south area of the city and the northwestern Gucheng area were the worst, the Shantang area was the best, and the High-tech area was better than the Gucheng area; the typical river course Caixiang Bridge was always better than Zhangguang Bridge and Huanghuajing Bridge, the apparent quality of Huanghuajing Bridge fluctuated greatly, and was in a poor grade generally. The sensation pollution index method (SPI) could evaluate the apparent water quality of on multiple levels, and it could scientifically explain the development history of apparent pollution phenomena and evaluate the effectiveness of water restoration projects.