| 引用本文: | 梁丽娥,李畅游,史小红,赵胜男,田野,张立杰.2006-2015年内蒙古呼伦湖富营养化趋势及分析.湖泊科学,2016,28(6):1265-1273. DOI:10.18307/2016.0612 |
| LIANG Li'e,LI Changyou,SHI Xiaohong,ZHAO Shengnan,TIAN Ye,ZHANG Lijie.Analysis on the eutrophication trends and affecting factors in Lake Hulun, 2006-2015. J. Lake Sci.2016,28(6):1265-1273. DOI:10.18307/2016.0612 |
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| 摘要: |
| 以内蒙古呼伦湖为研究对象，20062015年水质数据为基础，分析呼伦湖的富营养化变化趋势及其影响因素.结果表明，20062015年呼伦湖各水质指标都有不同程度的变幅，其中盐度变化范围为0.75~1.71 ng/L，均值为1.32 ng/L，2010年达到峰值1.71 ng/L，随后呈现逐年递减趋势；pH的变化范围为8.78~9.40，水体偏碱性；透明度的变化范围为0.17~0.26 m，近三年来透明度持续下降；溶解氧浓度变化范围为4.05~10.62 mg/L，均值为7.12 mg/L.总氮浓度的变化范围为1.16~3.53 mg/L，总磷浓度的变化范围为0.13~0.25 mg/L，叶绿素a浓度的变化范围为3.31~10.36 mg/m3，N/P比变化范围为4.92~15.35，水质已经达到地表水环境质量Ⅳ~Ⅴ类水体标准，是磷限制性湖泊.利用综合营养状态指数法对呼伦湖水体富营养化进行评价，2006-2015年呼伦湖水体表现出中度—重度—中度—轻度的变化趋势.通过分析呼伦湖富营养化的影响因素，结果表明，影响呼伦湖富营养化的可能因素为外源输入和入湖径流量，同时水深和水温也是呼伦湖发生富营养化的驱动因素，pH、透明度和溶解氧是呼伦湖富营养化影响水质的最主要表现指标. |
| 关键词: 富营养化 综合营养状态指数法 影响因素 呼伦湖 |
| DOI：10.18307/2016.0612 |
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| 基金项目:国家自然科学基金项目（51339002，51269017，51169011）资助. |
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| Analysis on the eutrophication trends and affecting factors in Lake Hulun, 2006-2015 |
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LIANG Li'e, LI Changyou, SHI Xiaohong, ZHAO Shengnan, TIAN Ye, ZHANG Lijie
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Water Conservancy and Civil Engineering College of Inner Mongolia Agricultural University, Hohhot 010018, P. R. China
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| Abstract: |
| Based on the water quality data of Lake Hulun from 2006 to 2015, the impact factors and the variation of eutrophication in the Lake Hulun are analyzed. The salinity ranges from 0.75 to 1.71 ng/L and the average is 1.32 ng/L, the maximum value is 1.71 ng/L in 2010, and there after followed in a decreasing trend. pH is in the range of 8.78-9.40, indicating an alkaline water;Transparency is in the scope of 0.17-0.26 m, continually decreasing in the recent three years. Dissolved oxygen varies between 4.05-10.62 mg/L, with the mean value of 7.12 mg/L, and the variation of total nitrogen, total phosphorus and chlorophyll-a are 1.16 to 3.53 mg/L, 0.13-0.25 mg/L and 3.31-10.36 mg/m3, respectively. The ratio of N/P is 4.92-15.35. The water quality of Lake Hulun is of type Ⅳ to Ⅴ in accordance with the water standards of the surface water,and the lake is phosphorus-limited lake.The eutrophication of Lake Hulun is evaluated with integrated nutritional status index method, and the results shows that the variation of the eutrophicaiton of Lake Hulun is moderate-severe-moderate-mild during the period of 2006 to 2015. The main impact factors of the eutrophication of Lake Hulun are exogenous inputs and runoff. The water depth and temperature of Lake Hulun are the drivers of eutrophication, while pH, transparency, and dissolved oxygen are the most important factors of eutrophication of Lake Hulun. |
| Key words: Eutrophication integrated nutritional status index method impact factors Lake Hulun |
