长江干流水质变化趋势研究
Water Quality Change Trends in the Main Stream of Yangtze River
DOI: 10.12677/JWRR.2020.92016, PDF,  被引量    国家科技经费支持
作者: 董文逊：武汉大学水资源与水电工程国家重点实验室，湖北 武汉；张艳军, 王素描, 吴金津, 赵建华, 许 昕, 邹薏轩：武汉大学水资源与水电工程国家重点实验室，湖北 武汉张艳军
关键词: 水质；趋势分析；单因子水质；标识指数；长江干流；Water Quality； Trend Analysis； Single Factor Water Quality； Identification Index； The Main Stream of Yangtze River
摘要: 利用攀枝花等12个主要的水质监测控制断面于2008~2018年间实测水质资料中的高锰酸盐指数(CODmn)、五日生化需氧量(BOD5)、氨氮(NH3-N)和总磷(TP)4个水质项目数据，通过转化为河流水质标识指数，探讨长江干流水质的变化趋势情况，并采用Mann-Kendall趋势检验和季节性Kendall趋势检验两种方法，对长江干流水质的变化趋势进行了分析研究。研究结果表明：1) 近十年以来，无论是在年尺度上还是月尺度上，长江干流水质在不断好转并呈现出继续好转或逐渐稳定的趋势，综合水质基本在III类水质标准；2) 除TP指标多处于III类水质标准范围内，CODmn、BOD5和NH3-N三个指标在II类水质标准范围内波动；3) 长江干流的CODmn、BOD5、NH3-N和TP四项指标基本能够满足水质管理目标，但BOD5指标有上升的趋势。
Abstract: Four different types of water quality data, including CODmn, BOD5, NH3-N and TP, in the 12 water quality monitoring sections from 2008 to 2018, which are converted into the single factor water quality identi-fication indexes, are used to analyze the trend in the main stream of the Yangtze River. Meanwhile, the Mann-Kendall trend test and the seasonal Kendall trend test are used in this paper. The results show that: 1) in the past ten years, both on the annual and monthly scales, the water quality of the main stream of the Yangtze River has continued to be better and has shown a trend of improvement or gradual stabilization; 2) the comprehensive water quality is basically below the grade III level. The three indexes CODmn, BOD5 and NH3-N meet the grade II level, except that the TP mostly meets the grade III level; 3) the concentration of the CODmn, BOD5, NH3-N and TP in the main stream meet the management target basically, but the concentration of BOD5 has a rising trend.
文章引用：董文逊, 张艳军, 王素描, 吴金津, 赵建华, 许昕, 邹薏轩. 长江干流水质变化趋势研究[J]. 水资源研究, 2020, 9(2): 150-158. https://doi.org/10.12677/JWRR.2020.92016

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