| 近十年来南四湖水质时空变化特征研究 |
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| 引用本文： | 徐好,桑国庆,杨丽原,闫芳阶,刘友春.近十年来南四湖水质时空变化特征研究[J].海洋湖沼通报,2019(2):47-52. |
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| 作者姓名： | 徐好 桑国庆 杨丽原 闫芳阶 刘友春 |
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| 作者单位： | 济南大学水利与环境学院;山东省淮河流域水利管理局规划设计院 |
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| 基金项目： | 山东省自然科学基金(ZR2016DM10)资助 |
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| 摘 要： | 基于南四湖湖区2006～2016年的水质监测数据,选取CODcr、TP、TN、和NH_3-N作为水质评价指标,对南四湖各湖区的污染情况及年际变化趋势进行对比分析,并利用综合水质标识指数法,对南四湖水质变化年际趋势进行综合评价。结果表明:2006～2016年间,各监控站点CODcr、TP、TN和NH_3-N浓度的年平均值总体呈下降趋势,其中NH_3-N的浓度平均值下降率最大,为72%。2016年南阳湖、独山湖、昭阳湖、微山湖的综合水质指标分别为4.096、3.446、3.350、3.128,呈现出北高南低的空间分布特征。2006～2016年间南四湖的综合水质标识指数由4.620下降至3.350,整体提高了1～2个水质类别,水质得到一定改善。由此可见,加强湖泊区域实施"治"、"用"、"保"并举等流域综合治理措施对湖区的治污效果意义重大。
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| 关 键 词： | 南四湖 时空特征 水质评价 综合水质标识指数 |
Temporal and Spatial Distribution Characteristics of Water Quality in Nansihu Lake in Recent Ten Years |
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| Institution: | (School of Water conservancy and Environment,University of Jinan,J inan 250022 ,China;Department of Planning and Programming,HuaiheBasin Water Resources Bureau of Shandong Province,Jinan 250100,China) |
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| Abstract: | Based on the water quality data of Nansihu Lake monitoring from 2006 to 2016,CODcr,TP,TN,and NH3-N were selected as the spatial and temporal distribution characteristics and evaluation indicators of the water quality to analyze the pollution and in terannual variation trends of the lake and to comprehensively evaluate the trend of in terannual water quality by using the comprehensive water quality index method.The results showed that the annual average concentrations of CODCr,TP,TN and NH3-N in the monitoring stations were downward trends from 2006 to 2016,and the average concentration of NH3-N decreased the most,at 72%.In 2016,the comprehensive water quality indicators of Nanyang Lake,Dushan Lake,Zhaoyang Lake and Weishan Lake were 4.096,3.446,3.350,3.128,respectively,indicating the spatial distribution characteristics of high in the north and low in the south.The comprehensive water quality index of Nansi Lake fell from 4.620 to 3.350 from 2006 to 2016,and the overall water quality category was improved by 1 to 2,and the water quality was improved.It can be seen that strengthening the implementation of comprehensive treatment measures,such as treatment,"utilization"and"protection"in the lake area,is of great significance to the pollution control in the lake area. |
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| Keywords: | Nansihu Lake Spatiotemporal characteristics water quality assessment Integrated water quality labeling index |
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