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| 升钟湖水体叶绿素a动态特征及其影响因子分析 |
| Spatio Temporal Variation of Water Quality and Identification of Eutrophication Controlling Factors in Shengzhong Lake |
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| DOI： |
| 中文关键词: 叶绿素a 总磷 总氮 水体富营养化 升钟湖 |
| 英文关键词: Chlorophyll a Total Phosphorus Total Nitrogen Eutrophication Shengzhong Lak |
| 基金项目:国家自然科学基金资助项目(31700387)；西华师范大学博士启动基金资助项目(14E011) |
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| 中文摘要: |
| 2011—2015年每月监测升钟湖湖区的4个代表性断面的水质指标，分析水体中叶绿素a时空分布特征、变化规律及影响水体水质状况的其他要素。结果表明：升钟湖的叶绿素a具有显著性的年际差异，表现为夏季高、冬季低且呈现逐年下降的变化趋势，总磷、总氮、氨氮、溶解氧、透明度监测指标同样表现为夏季高、冬季低的变化趋势，除溶解氧和透明度的监测指标逐年上升外，其他监测指标均逐年下降。构建了叶绿素a与总氮、总磷的多元回归方程模型，该模型可根据水体营养盐状态准确预测升钟湖叶绿素a的变化趋势。 |
| 英文摘要: |
| Caused by the problem of eutrophication， the water quality indicators of 4 representative sections of the Shengzhong Lake area were monitored monthly from 2011 to 2015， the spatial and temporal distribution characteristics of chlorophyll a content and its influencing factor were analyzed. The results showed that the chlorophyll a of Shengzhong Lake had significant interannual differences， showing high summer， low winter， and decrease year by year. The total phosphorus， total nitrogen， ammonia nitrogen， dissolved oxygen， and transparency also showed a trend of high in summer and low in winter. Except for dissolved oxygen and transparency were shows a tendency to increase year by year， other decrease year by year. Therefore， total phosphorus and total nitrogen were key limiting factors for eutrophication in Shengzhong Lake.Multiple regression equation model of chlorophyll a was constructed， which can accurately predict the change trend of chlorophyll a in Shengzhong Lake based on the state of nutrients in the water body. It has important science for the management and eutrophication of Shengzhong Lake Meaning and practical significance |
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