检索结果相关分组
- 基于系统聚类的鄱阳湖流域水功能区划研究
- 作者： 陆建忠 王飞 陈晓玲 齐亨达 来源：水资源与水工程学报 年份：2017 文献类型 ：期刊
- 描述：水功能区划是水环境管理和水污染物总量控制的重要基础。以县级行政区划为最小划分单元,根据选定的社会经济指标,采用系统聚类的方法,将鄱阳湖流域内各县进行分类。结合流域内水质状况、各县的其它社会经济条件
- 全文：水功能区划是水环境管理和水污染物总量控制的重要基础。以县级行政区划为最小划分单元,根据选定的社会经济指标,采用系统聚类的方法,将鄱阳湖流域内各县进行分类。结合流域内水质状况、各县的其它社会经济条件
- [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
- [0图]鱼耕二
- 作者：暂无 年份：2017 文献类型 ：新闻
- 描述： 在长期和鄱阳湖打交道的过程当中，鄱阳人无论是说话、吃饭、喝酒等风俗都和湖、和水有非常大的关系，并形成了开湖、禁湖祭湖等习俗。同时，在撒网打渔的过程中，形成了渔歌、渔鼓、渔舞、渔号等原生态的渔耕文化。
- 全文： 在长期和鄱阳湖打交道的过程当中，鄱阳人无论是说话、吃饭、喝酒等风俗都和湖、和水有非常大的关系，并形成了开湖、禁湖祭湖等习俗。同时，在撒网打渔的过程中，形成了渔歌、渔鼓、渔舞、渔号等原生态的渔耕文化。
- 基于EEMD的鄱阳湖流域年降水量周期预测
- 作者： 郭家力 祝薄丽 李英海 郭靖 张静文 来源：水电能源科学 年份：2017 文献类型 ：期刊 关键词： 年降水量 EEMD 鄱阳湖 周期预测
- 描述：气候变化影响下的降水量周期变化对于认识鄱阳湖枯水具有重要意义。采用EEMD方法分别将实测和模拟年降水量分解成不同频率的成分,然后采用FFT求得各IMF分量周期,以便对比未来和基准期的周期变化
- 全文：气候变化影响下的降水量周期变化对于认识鄱阳湖枯水具有重要意义。采用EEMD方法分别将实测和模拟年降水量分解成不同频率的成分,然后采用FFT求得各IMF分量周期,以便对比未来和基准期的周期变化
- 鄱阳湖,观赏鸟儿的天堂
- 作者： 赵乾海 来源：保健医苑 年份：2017 文献类型 ：期刊 关键词： 当代文学 鄱阳湖 散文 中国 观赏
- 描述：到庐山识得真面目后,原计划再到黄山一游。既然身在江西,何不去体验感受一下被西方人认为是贵族享受的户外游乐活动——观鸟呢?于是,直奔鄱阳湖。鄱阳湖古称彭蠡,《尚书·禹贡》有“彭蠡既潴,阳鸟攸居”之说,又有彭蠡湖、彭蠡泽、彭泽、彭湖、扬澜、宫亭湖等多种称谓。南北长173公里,东西最宽处达74公里,平均
- 全文：到庐山识得真面目后,原计划再到黄山一游。既然身在江西,何不去体验感受一下被西方人认为是贵族享受的户外游乐活动——观鸟呢?于是,直奔鄱阳湖。鄱阳湖古称彭蠡,《尚书·禹贡》有“彭蠡既潴,阳鸟攸居”之说,又有彭蠡湖、彭蠡泽、彭泽、彭湖、扬澜、宫亭湖等多种称谓。南北长173公里,东西最宽处达74公里,平均
- 吴城鄱阳湖自然保护区鱼体中重金属的富集及安全性评价
- 作者： 涂宗财 庞娟娟 郑婷婷 唐平平 王辉 张露 沙小梅 陈雪岚 来源：水生生物学报 年份：2017 文献类型 ：期刊 关键词： 富集 淡水鱼 吴城鄱阳湖自然保护区 安全性评价 重金属
- 描述：为研究吴城鄱阳湖自然保护区鱼类重金属的污染情况,以鄱阳湖吴城6种常见淡水鱼(鲤鱼、鳙鱼、鲢鱼、草鱼、青鱼、鳊鱼)为研究对象,分别研究鱼心脏、肝脏、鳃丝和肌肉等部位中铜、锌、铅、镉4种重金属的富集情况
- 全文：为研究吴城鄱阳湖自然保护区鱼类重金属的污染情况,以鄱阳湖吴城6种常见淡水鱼(鲤鱼、鳙鱼、鲢鱼、草鱼、青鱼、鳊鱼)为研究对象,分别研究鱼心脏、肝脏、鳃丝和肌肉等部位中铜、锌、铅、镉4种重金属的富集情况
- 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.
- 鄱阳湖水位多时间尺度动态变化特性分析
- 作者： 张范平 方少文 周祖昊 温天福 张梅红 来源：长江流域资源与环境 年份：2017 文献类型 ：期刊 关键词： Mann 水位动态变化 鄱阳湖 Kendall Morlet小波
- 描述：、极值变化、突变特征及其周期性。结果表明:鄱阳湖水位在年内具有高动态变化的特征,月最高水位一般出现在7月份,平均水位为17.75 m,最低水位一般出现在1月份,平均水位为10.8 m,年内变化幅度达
- 全文：、极值变化、突变特征及其周期性。结果表明:鄱阳湖水位在年内具有高动态变化的特征,月最高水位一般出现在7月份,平均水位为17.75 m,最低水位一般出现在1月份,平均水位为10.8 m,年内变化幅度达