| 乌伦古湖水质变化及成因分析 |
| Changes of the Water Quality of Ulungur Lake and the Corresponding Cause Analysis |
| 投稿时间：2017-10-29 修订日期：2018-03-20 |
| DOI：10.15928/j.1674-3075.2018.03.009 |
| 中文关键词:乌伦古湖 水质 成因分析 |
| 英文关键词:Ulungur Lake water quality corresponding cause analysis |
| 基金项目:国家科技基础性工作专项(2012FY112700) “新疆跨境河流水生生态和鱼类资源调查” |
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| 中文摘要: |
| 于2016年7月-2017年5月对乌伦古湖12个采样点(4个湖区)的水质进行了监测,分析了各湖区水质的水平分布特征,并对比历史资料对水质变化及成因进行了分析。结果显示乌伦古湖2016-2017年度年均矿化度(TDS)为1.64 g/L,透明度(SD)为1.90 m、pH为8.70、溶氧(DO)为7.55 mg/L,水温(T)为10.30 ℃,水深(DP)为8.78 m,总氮(TN)和总磷(TP)含量分别为1.06 mg/L和0.03 mg/L。与2006-2008年相比,年均TDS含量由2.31 g/L降低到1.64 g/L,各湖区TDS含量均降低,其中靠近额尔齐斯河引水的小海子(由1.97 g/L降低到0.82 g/L)和流经吉力湖的乌伦古河引水的中海子(由2.41 g/L降低至1.60 g/L)TDS含量降低最为明显；年均TN含量由0.86 mg/L增加到1.06 mg/L,年均TP含量稳定在0.03 mg/L左右,各湖区TN、TP含量除小海子降低外(TN由0.83 mg/L降低到0.72 mg/L；TP由0.03 mg/L降低到0.01 mg/L),其他各湖区含量保持稳定或升高,其中中海子升高最为明显(TN由0.94 mg/L升高到1.43 mg/L；TP由0.03 mg/L升高到0.05 mg/L)。研究表明额尔齐斯河引水对于乌伦古湖水体TDS、TN及TP都有稀释作用,而乌伦古河引水对乌伦古湖水体TDS也有稀释作用,但同时提高了TN、TP的含量。 |
| 英文摘要: |
| An investigation on water quality of the Ulungur Lake was carried out at 12 sampling sites during July, 2016 to May, 2017. We studied the changes of water parameters and made a comparison with historical data as well as analysised the corresponding causes. The annual average total dissolved solids (TDS) was 1.64 g/L, transparency was 1.90 m, pH was 8.70, dissolved oxygen (DO) was 7.55 mg/L, temperature was 10.30 ℃, depth was 8.78 m, total nitrogen (TN) and total phosphorus (TP) was 1.06 mg/L and 0.03 mg/L, respectively. Comparing to the water quality during 2006-2008, the average content of TDS of the whole lake decreased from 2.31 g/L to 1.64 g/L, and each lake region showed a reduction in TDS content, with obvious changes in Xiaohaizi receivingthe diversion water from the Irtysh River (from 1.97 g/L to 0.82 g/L) and Zhonghaizi receiving the diversion water from the Ulungur River flowing through the Jili Lake (from 2.41 g/L to 1.60 g/L). The average content of TN of the whole lake increased from 0.86 mg/L to 1.06 mg/L, while the average content of TP of the whole lake stabilized at about 0.03 mg/L. The reduction of average TN (from 0.83 mg/L to 0.72 mg/L) and TP (from 0.03 mg/L to 0.01 mg/L) occurred only in Xiaohaizi, and the content of TN and TP kept stable or increased in other lake regions, among which the changes of Zhonghaizi were most obvious (TN from 0.94 mg/L to 1.43 mg/L; TP from 0.03 mg/L to 0.05 mg/L). The results showed the water from the Irtysh River could diluted the content of TDS, TN and TP of the Ulungur Lake, and the water from the Ulungur River had a diluent effect on the TDS content of the Ulungur Lake as well but to some degree, increased the content of TN and TP. |
| 吉芬芬,沈建忠,马徐发,熊雷,孙秀华,孙林丹.2018.乌伦古湖水质变化及成因分析[J].水生态学杂志,39(3):61-66. |
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