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碟形湖在鄱阳湖湿地生态系统的作用和意义
作者: 胡振鹏 张祖芳 刘以珍 纪伟涛 葛刚  来源:江西水利科技 年份:2015 文献类型 :期刊 关键词: 生物多样性  碟形湖  鄱阳湖  湿地 
描述:灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
全文:灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
碟形湖在鄱阳湖湿地生态系统的作用和意义
作者: 胡振鹏 张祖芳 刘以珍 纪伟涛 葛刚  来源:江西水利科技 年份:2015 文献类型 :期刊 关键词: 生物多样性  碟形湖  鄱阳湖  湿地 
描述:灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
全文:灾害对鄱阳湖湿地生态系统的冲击,对于维护全球生态系统的完整性和生物多样性具有重要作用.最后提出了加强碟形湖保护和管理的对策.
鄱阳湖非平稳水位波动及其与长江的交互作用关系
作者: 戴雪 万荣荣 杨桂山  来源:地理学报(英文版) 年份:2015 文献类型 :期刊 关键词: Yangtze  earlier  seasonal  intensified  downstream  lacustrine  river  representative  flood  dominate 
描述:Seasonal water-level fluctuations(WLF) play a dominate role in lacustrine ecosystems. River-lake interaction is a direct factor in changes of seasonal lake WLF, especially for those lakes naturally connected to upstream and downstream rivers. During the past decade, the modification of WLF in the Poyang Lake(the largest freshwater lake in China) has caused intensified flood and irrigation crises, reduced water availability, compromised water quality and extensive degradation of the lake ecosystem. There has been a conjecture as to whether the modification was caused by its interactions with Yangtze River. In this study, we investigated the variations of seasonal WLF in China’s Poyang Lake by comparing the water levels during the four distinct seasons(the dry season, the rising season, the flood season, and the retreating season) before and after 2003 when the Three Gorge Dam operated. The Water Surface Slope(WSS) was used as a representative parameter to measure the changes in river-lake interaction and its impacts on seasonal WLF. The results showed that the magnitude of seasonal WLF has changed considerably since 2003; the seasonal WLF of the Poyang Lake have been significantly altered by the fact that the water levels both rise and retreat earlier in the season and lowered water levels in general. The fluctuations of river-lake interactions, in particular the changes during the retreating season, are mainly responsible for these variations in magnitude of seasonal WLF. This study demonstrates that WSS is a representative parameter to denote river-lake interactions, and the results indicate that more emphasis should be placed on the decrease of the Poyang Lake caused by the lowered water levels of the Yangtze River, especially in the retreating season.
全文:Seasonal water-level fluctuations(WLF) play a dominate role in lacustrine ecosystems. River-lake interaction is a direct factor in changes of seasonal lake WLF, especially for those lakes naturally connected to upstream and downstream rivers. During the past decade, the modification of WLF in the Poyang Lake(the largest freshwater lake in China) has caused intensified flood and irrigation crises, reduced water availability, compromised water quality and extensive degradation of the lake ecosystem. There has been a conjecture as to whether the modification was caused by its interactions with Yangtze River. In this study, we investigated the variations of seasonal WLF in China’s Poyang Lake by comparing the water levels during the four distinct seasons(the dry season, the rising season, the flood season, and the retreating season) before and after 2003 when the Three Gorge Dam operated. The Water Surface Slope(WSS) was used as a representative parameter to measure the changes in river-lake interaction and its impacts on seasonal WLF. The results showed that the magnitude of seasonal WLF has changed considerably since 2003; the seasonal WLF of the Poyang Lake have been significantly altered by the fact that the water levels both rise and retreat earlier in the season and lowered water levels in general. The fluctuations of river-lake interactions, in particular the changes during the retreating season, are mainly responsible for these variations in magnitude of seasonal WLF. This study demonstrates that WSS is a representative parameter to denote river-lake interactions, and the results indicate that more emphasis should be placed on the decrease of the Poyang Lake caused by the lowered water levels of the Yangtze River, especially in the retreating season.
长江上游水库调度缓解鄱阳湖枯水情势作用研究
作者: 要威 余启辉 游中琼  来源:人民长江 年份:2015 文献类型 :期刊 关键词: 三峡水库  水库调度  鄱阳湖  提前蓄水  控制性水库  枯水情势 
描述:近年来,鄱阳湖出现了枯水时间提前、枯水位偏低、持续时间延长等现象,其中水库蓄水是造成鄱阳湖枯水情势恶化的重要原因之一。对通过调整长江上游干支流控制性水库蓄放水过程来缓解鄱阳湖枯水情势可行性进行了研究。分析比较了三峡水库及上游控制性水库提前蓄水或延长蓄水时间等4个方案对缓解鄱阳湖枯水情势的效果。结果表明,调整上游干支流控制性水库调度运用方式,只能在部分时段缓解湖口水位降低的情势,且幅度较为有限,难以根本解决湖区低枯水位的问题。
全文:近年来,鄱阳湖出现了枯水时间提前、枯水位偏低、持续时间延长等现象,其中水库蓄水是造成鄱阳湖枯水情势恶化的重要原因之一。对通过调整长江上游干支流控制性水库蓄放水过程来缓解鄱阳湖枯水情势可行性进行了研究。分析比较了三峡水库及上游控制性水库提前蓄水或延长蓄水时间等4个方案对缓解鄱阳湖枯水情势的效果。结果表明,调整上游干支流控制性水库调度运用方式,只能在部分时段缓解湖口水位降低的情势,且幅度较为有限,难以根本解决湖区低枯水位的问题。
洞庭湖和鄱阳湖水量优化调控工程研究
作者: 仲志余 余启辉  来源:人民长江 年份:2015 文献类型 :期刊 关键词: 洞庭湖  江湖关系  变化趋势  鄱阳湖  枯水  优化调控 
描述:随着三峡水库及上游干支流控制性水库的逐步投运,长江中下游防洪形势得到极大改善。同时,由于蓄水拦沙,“清水”下泄,江湖关系已经并将继续发生变化,导致两湖水文情势进一步变化,对两湖地区水资源综合利用
全文:随着三峡水库及上游干支流控制性水库的逐步投运,长江中下游防洪形势得到极大改善。同时,由于蓄水拦沙,“清水”下泄,江湖关系已经并将继续发生变化,导致两湖水文情势进一步变化,对两湖地区水资源综合利用
鄱阳湖不同高程沉积物中磷形态特征研究
作者: 刘凯 倪兆奎 王圣瑞 倪才英  来源:中国环境科学 年份:2015 文献类型 :期刊 关键词: 江湖关系  磷形态  沉积物  鄱阳湖  分布特征 
描述:选取了枯水期鄱阳湖10~13m高程共14个出露表层沉积物样品,通过研究其总磷(TP)及各形态磷含量与分布特征,试图揭示江湖关系变化导致的水位下降对鄱阳湖沉积物磷潜在释放风险的影响.结果表明,鄱阳湖
全文:选取了枯水期鄱阳湖10~13m高程共14个出露表层沉积物样品,通过研究其总磷(TP)及各形态磷含量与分布特征,试图揭示江湖关系变化导致的水位下降对鄱阳湖沉积物磷潜在释放风险的影响.结果表明,鄱阳湖
鄱阳湖水域刀鲚耳石的形态学和微化学研究
作者: 卢明杰  来源:上海海洋大学 年份:2015 文献类型 :学位论文 关键词: 刀鲚  形态  电子探针微区分析仪  鄱阳湖  Sr/Ca  微化学  耳石 
描述:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
全文:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
鄱阳湖水域刀鲚耳石的形态学和微化学研究
作者: 卢明杰  来源:上海海洋大学 年份:2015 文献类型 :学位论文 关键词: 刀鲚  形态  电子探针微区分析仪  鄱阳湖  Sr/Ca  微化学  耳石 
描述:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
全文:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
鄱阳湖水域刀鲚耳石的形态学和微化学研究
作者: 卢明杰  来源:上海海洋大学 年份:2015 文献类型 :学位论文 关键词: 刀鲚  形态  电子探针微区分析仪  鄱阳湖  Sr/Ca  微化学  耳石 
描述:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
全文:日益突出。对其的保护已刻不容缓。作为一种溯河洄游型鱼类,刀鲚在淡水环境中生殖繁衍。淡水产卵场起源的刀鲚仔稚鱼,将是对诸如长江干流、通江湖泊、河口、相邻海区等关联水域资源的重要补充。由此可见,刀鲚淡水
论绿色科技在鄱阳湖生态农业发展中的运用
作者: 张爱云 张丹 周怡  来源:科技致富向导 年份:2015 文献类型 :期刊 关键词: 生态农业  绿色科技  运用 
描述:绿色科技对鄱阳湖生态农业的发展起着非常重要的作用。但是,就目前来看,鄱阳湖生态经济区由于受人们意识理念和资金短缺的影响,绿色科技对鄱阳湖生态农业发展的支撑作用仍然不够。因此,要发展鄱阳湖生态农业,必须要加大绿色科技的投入,营造良好的绿色科技氛围,加强绿色科技在鄱阳湖生态农业发展中的支撑作用
全文:绿色科技对鄱阳湖生态农业的发展起着非常重要的作用。但是,就目前来看,鄱阳湖生态经济区由于受人们意识理念和资金短缺的影响,绿色科技对鄱阳湖生态农业发展的支撑作用仍然不够。因此,要发展鄱阳湖生态农业,必须要加大绿色科技的投入,营造良好的绿色科技氛围,加强绿色科技在鄱阳湖生态农业发展中的支撑作用
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