| 张彦,邹磊,李平,窦明,黄仲冬,梁志杰,齐学斌.卫河流域河南段水体污染物时空差异性特征分析[J].农业环境科学学报,2022,41(1):132-143. |
| 卫河流域河南段水体污染物时空差异性特征分析 |
| Characteristics of spatio-temporal differences of water pollutants in the Henan section of the Wei River basin |
| 投稿时间：2021-05-17 |
| DOI：10.11654/jaes.2021-0573 |
| 中文关键词: 卫河流域 河南 时空差异性 聚类分析 判别分析 |
| 英文关键词: Wei River basin Henan spatio-temporal difference cluster analysis discriminant analysis |
| 基金项目:河南省自然科学基金项目（212300410310）；国家重点研发计划项目（2021YFD1700901）；中央级公益性科研院所基本科研业务费专项（FIRI20210105）；国家自然科学基金项目（51879239，42101043） |
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| 中文摘要: |
| 为了揭示卫河流域河南段水体污染物时空差异性特征，选取流域9个监测断面水体污染物COD、NH3-N和TP的监测数据，利用M-K检验、Pettitt突变检验法、聚类分析和判别分析等方法对不同时期水体污染物的变化趋势、时空分布以及差异性进行分析。结果表明：卫河干流、共产主义渠和汤河的水质状况相对较差，淇河和安阳河的水质状况较好，NH3-N为卫河流域河南段主要的水体污染物。大部分监测断面的水体污染物在不同时期均呈现出显著减小的趋势，COD和NH3-N的突变时间多集中在2016年和2017年，而TP的突变时间多集中在2017年和2018年。各监测断面的COD和NH3-N处于Ⅳ类及以上水质标准的占比呈现出非汛期＞汛期，而TP呈现出汛期＞非汛期；不同时期的水体污染物的空间聚类结果有效且相对较好，监测断面鹤壁耿寺COD质量浓度和浚县前枋城TP质量浓度在不同时期的波动性均较小，其余监测断面COD和TP质量浓度的波动性相对较大；各监测断面NH3-N质量浓度在不同时期的波动性具有一定的相似性。研究表明，卫河流域河南段水体污染物具有明显的时空差异性特征。 |
| 英文摘要: |
| To reveal the spatiotemporal difference characteristics of water pollutants in the Henan section of the Wei River basin, the monitoring data of water pollutants COD, NH3-N, and TP from nine monitoring sections in the Wei River basin were collected, and the change trends, spatio-temporal distribution, and differences of water pollutants in different periods were analyzed using the Mann-Kendall test, Pettitt mutation test, cluster analysis, and discriminant analysis. The results showed that the water quality was relatively poor in the main stream of the Wei River, Communist canal, and Tang River, while those of the Qi River and Anyang River were relatively good. NH3-N was the main water pollutant in the Henan section of the Wei River basin. Most of the water pollutants in the monitoring sections showed a significant decreasing trend across different periods; the mutation times of COD and NH3-N were mostly concentrated in 2016 and 2017, whereas those of TP were mostly concentrated in 2017 and 2018. The proportion of COD and NH3-N in class Ⅳ and above water quality standards showed non-flood season > flood season, while TP showed flood season > non-flood season. The spatial clustering results of water pollutants were effective and relatively good in different periods: the fluctuations of COD concentration in Hebi Gengsi and TP concentration in Xunxian Qianfangcheng in different periods were small, while the fluctuations of COD and TP concentrations in the other monitoring sections were relatively large, and the fluctuations in NH3-N concentration in different monitoring sections in different periods had certain similarities. The water pollutants in the Henan section of the Wei River basin show obvious spatio-temporal differences. |
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