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| 太湖水质氮素质量浓度时空差异特征及影响因素分析 |
| Spatial and Temporal Differences and Its Influence Factors of Nitrogen Concentration in Taihu Lake |
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| DOI： |
| 中文关键词: 氮 时空分布 水生生态 自净功能 太湖 |
| 英文关键词: Nitrogen Temporal and spatial distribution Aquatic ecosystem Self purification function Taihu Lake |
| 基金项目:国家重大科学仪器设备开发专项基金资助项目(2012YQ030111007，2017YFF0108503) |
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| 中文摘要: |
| 通过对2014—2016年湖体水质中氮素质量浓度分析，结合出入湖总氮浓度、水量、湖体水生生态等影响因素，发现太湖水体中总氮浓度呈现逐年下降的趋势，各监测点位总氮为0530 mg/L~551 mg/L，时空分布不均，差异明显。时间上，总氮浓度表现为春季最高，夏季和秋季最低，且月均值变化曲线呈现出规律的正弦函数波形。空间上，总氮浓度大致表现出由西部湖区向东部湖区递减的趋势，呈现西部湖区﹥北部湖区﹥南部湖区﹥湖心区﹥东部湖区。要改善湖体水质，不仅要切断污染源，而且要加强水生生态功能修复。 |
| 英文摘要: |
| Through the analysis of nitrogen concentration in Taihu lake from 2014 to 2016， and the influence factors such as input and output of total nitrogen concentration， water quantity and aquatic ecosystem， it was found that total nitrogen concentration in Taihu Lake was decreasing year by year. Total nitrogen concentration at various monitoring sites were 0.530 mg/L~5.51 mg/L， which was obviously different and uneven distributed in time and space. In terms of time， total nitrogen concentration was the highest in spring and the lowest in summer or autumn. Monthly mean concentration varied with sinusoidal function. In space， total nitrogen concentration had a decreasing trend from the west to the east of the lake， total nitrogen concentration in the lake from high to low in order was：west area， north area， south area， central area， east area. In order to improve water quality， one should not only cut off the pollution sources， but also strengthen the restoration of aquatic ecological functions. |
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