北盘江支流打帮河溶解氧分布特征及影响因素分析
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摘要
打帮河为北盘江一级支流,大坝建成蓄水后,打帮河流域的鱼类种群数急剧减少.本文通过对打帮河流域的现场水质监测,分析了打帮河流域溶解氧的季节变化及空间分布特征,探讨了流域内溶解氧与其他水质因子的相关性.结果显示:全年(春、夏、秋、冬)最大平均溶解氧浓度分别为9.87mg/L、11.58mg/L、12.63mg/L、7.80mg/L.冬春两季上下层平均浓度差分别为2.71mg/L、3.35mg/L;夏秋两季在水面以下10m和5m左右出现明显跃层,上下层平均浓度差分别为5.03mg/L、4.49mg/L.整个研究河段全年溶解氧浓度分布呈现出"两端高,中间低"的现象.受水温影响的大气复氧能力直接影响溶解氧的垂向分布,随着水深增大,浮游植物光合作用降低,水中溶解氧含量供需不足.同时上游泄水也是影响溶解氧时空变化的主要原因之一.研究结果有效反映出流域的水质状况,可对河流水质状况改善及流域生态环境保护提供参考.
Dabang River,the tributary of Beipanjiang River,the dam was built and then impounding,The basin fish population in Dabang River decreased dramatically.In this paper,the seasonal variation and spatial distribution of dissolved oxygen in Dabang River basin are analyzed by monitoring the water quality of Dabang River basin;and the correlation between dissolved oxygen and other water quality factors in the river basin is discussed.The results show that the maximum dissolved oxygen concentrations are 9.87 mg/L,11.58 mg/L,12.63 mg/L and 7.80 mg/L respectively in the whole year(spring,summer,autumn and winter).The average concentration differences of the upper and lower layers in spring and winter are 2.71 mg/L and 3.35 mg/L respectively.The average concentration differences of the upper and lower layers in the summer and autumn are5.03 mg/L,4.49 mg/L.The distribution of dissolved oxygen concentration in the whole study shows a"high at both ends and low in the middle".At the same time,the upstream discharge is also one of the main reasons for the change of dissolved oxygen.The study results can effectively reflect the water quality of the river basin,so as to provide reference for the improvement of river water quality and the protection of river basin ecological environment.
Dabang River,the tributary of Beipanjiang River,the dam was built and then impounding,The basin fish population in Dabang River decreased dramatically.In this paper,the seasonal variation and spatial distribution of dissolved oxygen in Dabang River basin are analyzed by monitoring the water quality of Dabang River basin;and the correlation between dissolved oxygen and other water quality factors in the river basin is discussed.The results show that the maximum dissolved oxygen concentrations are 9.87 mg/L,11.58 mg/L,12.63 mg/L and 7.80 mg/L respectively in the whole year(spring,summer,autumn and winter).The average concentration differences of the upper and lower layers in spring and winter are 2.71 mg/L and 3.35 mg/L respectively.The average concentration differences of the upper and lower layers in the summer and autumn are5.03 mg/L,4.49 mg/L.The distribution of dissolved oxygen concentration in the whole study shows a"high at both ends and low in the middle".At the same time,the upstream discharge is also one of the main reasons for the change of dissolved oxygen.The study results can effectively reflect the water quality of the river basin,so as to provide reference for the improvement of river water quality and the protection of river basin ecological environment.
引文
[1]熊锋,王从锋,刘德富,等.松花江流域典型鱼类的游泳能力比较实验研究[J].三峡大学学报(自然科学版),2014(4):14-18.
[2]刘慧杰,王从锋,刘德富,等.双频识别声呐在鱼类资源调查中的应用进展[J].三峡大学学报(自然科学版),2015,37(3):28-34.
[3]麻泽龙,程根伟.河流梯级开发对生态环境影响的研究进展[J].水科学进展.2006,17(5):748-753.
[4]Arend K K,Beletsky D,Depinto J V,et al.Seasonal and interannual effects of hypoxia on fish habitat quality in central Lake Erie[J].Freshwater Biology,2011,56(2):366-383.
[5]Jones I D,Winfield I J,Carse F.Assessment of longterm changes in habitat availability for Arctic charr(Salvelinus alpinus)in a temperate lake using oxygen profiles and hydroacoustic surveys[J].Freshwater Biology,2008,53(2):393–402.
[6]E.B.Welch,G.D.Cooke,John R.Jones,et al.DOTemperature habitat loss due to eutrophication in Tenkiller Reservoir,Oklahoma,USA[J].Lake&Reservoir Management,2011,27(3):271-285.
[7]MaLler B,Bryant L D,Matzinger A,et al.Hypolimnetic oxygen depletion in eutrophic lakes[J].Environmental Science&Technology,2012,46(18):9964-71.
[8]曾康,黄廷林,马卫星,等.金盆水库汛期高浊水径流的潜入及热分层水体水质响应[J].中国环境科学,2015,35(9):2778-2786.
[9]Gao Xuelu,Song Jinming.Dissolved Oxygen and O2Flux Across the Water-Air Interface of the Changjiang Estuary in May2003[J].Journal of Marine Systems,2008,74(1/2):343-350.
[10]周路,杨兴,李正友,等.北盘江董箐水电站建设对鱼类资源的影响及对策[J].水生态学杂志,2006,26(5):64-65.
[11]汪玲珑,王从锋,寇方露,等.北盘江四种鱼类临界游泳速度研究[J].三峡大学学报(自然科学版),2016,38(1):15-19.
[12]纵霄,常理.北盘江梯级水电站鱼类增殖放流站方案研究[J].水力发电.2008,34(7):29-31.
[13]望建成.北盘江流域水文特性分析[J].人民珠江,2014,35(6):173-174.
[14]游亮,崔莉凤,刘载文,等.藻类生长过程中DO、pH与叶绿素相关性分析[J].环境科学与技术,2007,30(9):42-44.
[15]黄岁樑,臧常娟,杜胜蓝,等.pH、溶解氧、叶绿素a之间相关性研究Ⅰ:养殖水体[J].环境工程学报,2011,5(8):1201-1208.
[16]Bianchi T S,Dimarco S F,Jr C J,et al.The science of hypoxia in the Northern Gulf of Mexico:a review.[J].Science of the Total Environment,2010,408(7):1471.
[2]刘慧杰,王从锋,刘德富,等.双频识别声呐在鱼类资源调查中的应用进展[J].三峡大学学报(自然科学版),2015,37(3):28-34.
[3]麻泽龙,程根伟.河流梯级开发对生态环境影响的研究进展[J].水科学进展.2006,17(5):748-753.
[4]Arend K K,Beletsky D,Depinto J V,et al.Seasonal and interannual effects of hypoxia on fish habitat quality in central Lake Erie[J].Freshwater Biology,2011,56(2):366-383.
[5]Jones I D,Winfield I J,Carse F.Assessment of longterm changes in habitat availability for Arctic charr(Salvelinus alpinus)in a temperate lake using oxygen profiles and hydroacoustic surveys[J].Freshwater Biology,2008,53(2):393–402.
[6]E.B.Welch,G.D.Cooke,John R.Jones,et al.DOTemperature habitat loss due to eutrophication in Tenkiller Reservoir,Oklahoma,USA[J].Lake&Reservoir Management,2011,27(3):271-285.
[7]MaLler B,Bryant L D,Matzinger A,et al.Hypolimnetic oxygen depletion in eutrophic lakes[J].Environmental Science&Technology,2012,46(18):9964-71.
[8]曾康,黄廷林,马卫星,等.金盆水库汛期高浊水径流的潜入及热分层水体水质响应[J].中国环境科学,2015,35(9):2778-2786.
[9]Gao Xuelu,Song Jinming.Dissolved Oxygen and O2Flux Across the Water-Air Interface of the Changjiang Estuary in May2003[J].Journal of Marine Systems,2008,74(1/2):343-350.
[10]周路,杨兴,李正友,等.北盘江董箐水电站建设对鱼类资源的影响及对策[J].水生态学杂志,2006,26(5):64-65.
[11]汪玲珑,王从锋,寇方露,等.北盘江四种鱼类临界游泳速度研究[J].三峡大学学报(自然科学版),2016,38(1):15-19.
[12]纵霄,常理.北盘江梯级水电站鱼类增殖放流站方案研究[J].水力发电.2008,34(7):29-31.
[13]望建成.北盘江流域水文特性分析[J].人民珠江,2014,35(6):173-174.
[14]游亮,崔莉凤,刘载文,等.藻类生长过程中DO、pH与叶绿素相关性分析[J].环境科学与技术,2007,30(9):42-44.
[15]黄岁樑,臧常娟,杜胜蓝,等.pH、溶解氧、叶绿素a之间相关性研究Ⅰ:养殖水体[J].环境工程学报,2011,5(8):1201-1208.
[16]Bianchi T S,Dimarco S F,Jr C J,et al.The science of hypoxia in the Northern Gulf of Mexico:a review.[J].Science of the Total Environment,2010,408(7):1471.