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[0图]鄱阳湖鳜鱼窒息点与耗氧率的初步研究
作者: 杨春 李达 徐光龙 张力  年份:2017 文献类型 :图书
描述:鄱阳湖鳜鱼窒息点与耗氧率的初步研究
鄱阳湖水利枢纽
作者:暂无 来源:中国周刊 年份:2017 文献类型 :期刊
描述:鄱阳湖水利枢纽
鄱阳湖夏季水鸟的数量与分布
作者: 曾南京 朱奇 刘观华 詹慧英 刘芳菁 余定坤 黄江  来源:湿地科学与管理 年份:2017 文献类型 :期刊
描述:鄱阳湖夏季水鸟的数量与分布
鄱阳湖枯水水位及流速时空分布模拟
作者: 齐凌艳 黄佳聪 高俊峰 郭玉银  来源:长江流域资源与环境 年份:2017 文献类型 :期刊
描述:鄱阳湖枯水水位及流速时空分布模拟
鄱阳湖退田还湖圩区土地返耕利用的研究
作者: 杨柳 江丰 谢正磊 王军邦 廖富强 齐述华  来源:中国土地科学 年份:2017 文献类型 :期刊
描述:鄱阳湖退田还湖圩区土地返耕利用的研究
井冈山新城镇排头村“鄱阳湖1号”泥鳅示范养殖报告
作者: 吴斌 罗军元 杨兆光  来源:渔业致富指南 年份:2017 文献类型 :期刊
描述:井冈山新城镇排头村“鄱阳湖1号”泥鳅示范养殖报告
模拟研究变化水位和流速条件下鄱阳湖磷释放特征
作者: 童亚莉 梁涛 王凌青 李可欣  来源:Journal of Geographical Sciences 年份:2017 文献类型 :期刊
描述:Since the construction of the Three Gorges Dam,the Poyang Lake hydrological characteristics obviously changed.During the impoundment period of the Three Gorges Reservoir,the hydrodynamic factors of Poyang Lake varied.Water level dropped,the velocity decreased and water exchange time lengthened,which changed the release of phosphorous from sediments.In order to investigate how the hydrodynamic factors influence the release of phosphorous from sediments,we used a two-way annular flume device to simulate the release characteristics of phosphorous from sediments under variable water levels and velocities.We found that both water level rising and velocity increasing could enhance the disturbance intensity to sediments,which caused the increase of suspended solids(SS)concentration,total phosphorus(TP)concentration in the overlying water,and the ability that phosphorus released to overlying water from sediments enhanced as well:when overlying water velocity maintained 0.3 m/s,SS concentration increased to 4035.85 mg/L at the water level25 cm which was about 25 times compared to the minimum value and TP concentration in the overlying water also reached the maximum value at the water level 25 cm which was 1.2times that of the value at 10 cm;when water level maintained 15 cm,SS concentration increased to 4363.35 mg/L at the velocity of 0.5 m/s which was about 28 times compared to the value of 0 m/s,and TP concentration in the overlying water increased from 0.11 mg/L to 0.44mg/L.When the water level maintained 15 cm,the phosphorous release rate reached the maximum value of 4.86 mg/(md)at 0.4 m/s.The concentration of total dissolved phosphorous(TDP)and soluble reactive phosphate(SRP)both in overlying water and sediment-water interface were negatively correlated with p H.Using the parabolic equation,the optimum water level at a velocity of 0.3 m/s was calculated to be 0.57 cm,and the optimum velocity at water level of 15 cm was found to be 0.2 m/s.
全文:Since the construction of the Three Gorges Dam,the Poyang Lake hydrological characteristics obviously changed.During the impoundment period of the Three Gorges Reservoir,the hydrodynamic factors of Poyang Lake varied.Water level dropped,the velocity decreased and water exchange time lengthened,which changed the release of phosphorous from sediments.In order to investigate how the hydrodynamic factors influence the release of phosphorous from sediments,we used a two-way annular flume device to simulate the release characteristics of phosphorous from sediments under variable water levels and velocities.We found that both water level rising and velocity increasing could enhance the disturbance intensity to sediments,which caused the increase of suspended solids(SS)concentration,total phosphorus(TP)concentration in the overlying water,and the ability that phosphorus released to overlying water from sediments enhanced as well:when overlying water velocity maintained 0.3 m/s,SS concentration increased to 4035.85 mg/L at the water level25 cm which was about 25 times compared to the minimum value and TP concentration in the overlying water also reached the maximum value at the water level 25 cm which was 1.2times that of the value at 10 cm;when water level maintained 15 cm,SS concentration increased to 4363.35 mg/L at the velocity of 0.5 m/s which was about 28 times compared to the value of 0 m/s,and TP concentration in the overlying water increased from 0.11 mg/L to 0.44mg/L.When the water level maintained 15 cm,the phosphorous release rate reached the maximum value of 4.86 mg/(md)at 0.4 m/s.The concentration of total dissolved phosphorous(TDP)and soluble reactive phosphate(SRP)both in overlying water and sediment-water interface were negatively correlated with p H.Using the parabolic equation,the optimum water level at a velocity of 0.3 m/s was calculated to be 0.57 cm,and the optimum velocity at water level of 15 cm was found to be 0.2 m/s.
鄱阳湖4种鹤类集群特征与成幼组成的时空变化
作者: 邵明勤 蒋剑虹 戴年华 卢萍  来源:生态学报 年份:2017 文献类型 :期刊
描述:鄱阳湖4种鹤类集群特征与成幼组成的时空变化
人类活动对鄱阳湖刀鲚的影响及其保护性开发对策
作者: 王庆萍 甘江英  来源:渔业致富指南 年份:2017 文献类型 :期刊
描述:人类活动对鄱阳湖刀鲚的影响及其保护性开发对策
鄱阳湖流域参考作物蒸散量变化特征及其归因分析
作者: 涂安国 李英 聂小飞 莫名浩  来源:生态环境学报 年份:2017 文献类型 :期刊
描述:鄱阳湖流域参考作物蒸散量变化特征及其归因分析
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