基于水质标识指数法的李家峡水库水质现状评价

Evaluation on Water Quality Status of Lijiaxia Reservoir Based on Identification Index Method

利用新型的水环境质量评价法——单因子水质标识指数法和综合水质标识指数法,对青海省李家峡水库水质进行评价,并且与单因子污染指数法的评价结果进行比较。结果表明,李家峡水库在丰水期时,水质达到国家Ⅲ类水标准,其中TP的贡献率最大;在枯水期时,水质达到国家Ⅲ类水标准,其中TP的贡献率较大;在平水期,水质达到国家Ⅲ类水标准,并且该评价结果与单因子污染指数法的评价结果基本一致。

Using new type of water environmental quality assessment method——single factor identification index method and integrated water identification index,water quality of Lijiaxia Reservoir in Qinghai Province was evaluated,and was compared with results of single factor pollution index method. The results showed that,of LIJIAXIA reservoir evaluation of water quality in the Qinghai province,and the evaluation of results of a single factor pollution index was compared. The results showed that： reservoir during the wet period,water quality meet the state Class Ⅲ water,where TP has a greatest contribution; When the dry season,the water quality up to the national class III water,which contributes a greater rate of TP; In normal water,the water quality up to the national III water standards. And the evaluation results are consistent with the results of the evaluation of single factor pollution index.