检索结果相关分组
- 《鄱阳湖学刊》投稿须知
- 作者：暂无 来源：鄱阳湖学刊 年份：2017 文献类型 ：期刊
- 描述：1.本刊刊登生态人文社会科学跨学科研究的各类成果,学术论文以6000—20000字为宜。2.本刊自创刊以来,从未委托、授权任何个人或机构代理征稿业务,也从未收取过版面费,作者投稿请通过电子邮件将稿件
- 全文：1.本刊刊登生态人文社会科学跨学科研究的各类成果,学术论文以6000—20000字为宜。2.本刊自创刊以来,从未委托、授权任何个人或机构代理征稿业务,也从未收取过版面费,作者投稿请通过电子邮件将稿件
- 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
- 鄱阳湖水质资源有偿使用受偿意愿的影响因素分析
- 作者： 刘桂英 来源：安徽农学通报 年份：2017 文献类型 ：期刊 关键词： 有偿使用 水质资源 鄱阳湖 影响因素 生态补偿
- 描述：通过对鄱阳湖水质资源有偿使用的实地调研,从农户受教育水平、收入水平和支出水平几个方面对鄱阳湖水质资源有偿使用受偿意愿的影响因素进行了分析。得出受教育水平对休渔期受偿意愿、候鸟保护受偿意愿、退田还湖受
- 全文：通过对鄱阳湖水质资源有偿使用的实地调研,从农户受教育水平、收入水平和支出水平几个方面对鄱阳湖水质资源有偿使用受偿意愿的影响因素进行了分析。得出受教育水平对休渔期受偿意愿、候鸟保护受偿意愿、退田还湖受
- 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
- 鄱阳湖教育高峰论坛在昌隆重举行
- 作者： 江虹 长新 锋旗 来源：江西教育 年份：2017 文献类型 ：期刊 关键词： 教育厅 论坛 大发展 职业教育 教育培训体系 教科文 鄱阳湖 人大常委会 高峰 生态经济区建设
- 描述：5月26日,由省委宣传部,省人大教科文卫委,省委教育工委、省教育厅联合举办的鄱阳湖教育高峰论坛在南昌举行。论坛
- 全文：5月26日,由省委宣传部,省人大教科文卫委,省委教育工委、省教育厅联合举办的鄱阳湖教育高峰论坛在南昌举行。论坛