| 马翔宇,鲁建婷,麻 林,钱 宝,闫 峰.长江上游珍稀鱼类自然保护区代表性测站的镉生态风险评估[J].江西水利科技,2021,(3): |
| 长江上游珍稀鱼类自然保护区代表性测站的镉生态风险评估 |
| Ecological risk assessment of cadmium at representative stations of the Endemic Fish National Nature Reserve of Yangtze River |
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| DOI： |
| 中文关键词: 镉 风险商 水质基准 生态风险 长江 |
| 英文关键词: Cadmium Risk quotient Water quality criteria Ecological risk Yangtze River |
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| 中文摘要: |
| 基于生态环境部最新颁布的《淡水水生生物水质基准—镉（2020年版）》建立风险商模型，对长江上游珍稀鱼类自然保护区内5个代表性测站的镉生态风险进行评价.结果表明：（1）屏山站、宜宾站、泸州站、高场站、富顺站的短期水质基准（short-term water quality criteria，SWQC）年均值分别为 6.89μg/l、6.68μg/l、6.51μg/l、6.26μg/l、10.49μg/l；长期水质基准（long-term water quality criteria，LWQC）年均值分别为 0.30μg/l、0.30μg/l、0.29μg/l、0.28μg/l、0.38μg/l.（2）泸州站短期风险商（short-term risk quotient，SRQ）年均值为0.05，属于“低”级别，屏山站、宜宾站、高场站、富顺站的SRQ分别为0.31、0.35、0.37、0.23，均为中级别。屏山站、宜宾站、泸州站、高场站、富顺站的长期风险商（long-term risk quotient，LRQ）年均值分别为7.14、7.56、1.06、7.99、6.34，均属于“高”级别.通过本次研究发现：长江上游珍稀鱼类自然保护区中，存在多个测站SRQ31的高风险情况，需有关部门对川西南、川南的采矿、冶炼企业的开采、运输和污水排放进行必要的整治.同时，加强对镉含量和水体总硬度的监测和预警应作为今后保护区水资源管理的重点之一. |
| 英文摘要: |
| The ecological risk of cadmium in five representative stations in the Upper Yangtze River Rare Fish Nature Reserve was evaluated based on the risk quotient model（RQF）of Cadmium in Freshwater Aquatic Quality Criteria（2020 Edition）issued by the Ministry of Ecology and Environment.The results show that：（1）the annual average values of short-term water quality criteria（SWQC）at Ping Shan Station，Yibin Station，Luzhou Station，Gaochang Station and Fushun Station were 6.89μg/l，6.68μg/l，6.51μg/l，6.26μg/l and 10.49μg/l，respectively；and （2）the annual average values of long-term water quality criteria（SWQC）at Ping Shan Station，Yibin Station，Luzhou Station， Gaochang Station and Fushun Station were 6.89μg/l， 6.68μg/l， 6.51μg/l， 6.26μg/l and 10.49μg/l，respectively.The annual average values of the long-term water quality criteria （LWQC）are 0.30μg/l，0.30μg/l，0.29μg/l，0.28μg/l，and 0.38μg/l.（2）Short-term risk at Luzhou station is 0.30μg/l，0.30μg/l，0.29μg/l，0.28μg/l，and 0.38μg/l，respectively.The SRQ of Ping Shan Station，Yibin Station，Gaochang Station and Fushun Station are 0.31，0.35，0.37 and 0.23 respectively，which are all in the medium grade.The annual average long-term risk quotient（LRQ）values at Ping Shan Station，Yibin Station，Luzhou Station，Gaochang Station and Fushun Station were 7.14，7.56，1.06，7.99 and 6.34 respectively，which were all at the “high” level. （3）The main factor influencing the ecological risk of cadmium is the total hardness of the water body in the Upper Yangtze River Rare Fish Nature Reserve.（4）This study found that in the Upper Yangtze River Rare Fish Nature Reserve，there are a number of measuring stations SRQ31 high-risk situation，the relevant departments of the southwest and south of the Sichuan mining，smelting enterprises，mining，transportation and sewage discharge to carry out the necessary remediation.At the same time，strengthening the monitoring and early warning of cadmium content and total water hardness should be one of the priorities of water resources management in protected areas in the future. |
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