检索结果相关分组
- 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.
- 鄱阳湖水位演变及其影响因子分析
- 作者： 邓志民 张翔 肖洋 潘国艳 来源：武汉大学学报(工学版) 年份：2015 文献类型 ：期刊 关键词： Mann Kendall检验 水位 逐步回归分析 鄱阳湖
- 描述：Mann-Kendall检验对其演变趋势进行分析,然后,利用逐步回归分析法,分别采用2011年5月-2012年12月和2013年1月-2014年4月的水位及入出湖总水量数据进行模型的率定与检验,量化鄱阳湖水位动态
- 全文：Mann-Kendall检验对其演变趋势进行分析,然后,利用逐步回归分析法,分别采用2011年5月-2012年12月和2013年1月-2014年4月的水位及入出湖总水量数据进行模型的率定与检验,量化鄱阳湖水位动态
- 鄱阳湖动态水位～面积、水位～容积关系研究
- 作者： 李国文 喻中文 陈家霖 来源：江西水利科技 年份：2015 文献类型 ：期刊 关键词： 动态 水位 鄱阳湖 容积 研究 面积
- 描述：本文提出建立动态水位面积、水位容积关系的构想.针对鄱阳湖不同水情变化产生的湖面各处水位差异,运用微积分、泰森多边形理论,结合现有水文(水位)站数量和分布、鄱阳湖湖盆特征和不同时期水情特点,研究鄱阳湖水文(水位)站分区水位与面积、水位与容积关系,开展鄱阳湖区动态水位~面积、水位~容积理论研究和实践.
- 全文：本文提出建立动态水位面积、水位容积关系的构想.针对鄱阳湖不同水情变化产生的湖面各处水位差异,运用微积分、泰森多边形理论,结合现有水文(水位)站数量和分布、鄱阳湖湖盆特征和不同时期水情特点,研究鄱阳湖水文(水位)站分区水位与面积、水位与容积关系,开展鄱阳湖区动态水位~面积、水位~容积理论研究和实践.
- 鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 作者： 戴雪 来源：中国科学院大学 年份：2015 文献类型 ：学位论文
- 描述：鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 作者： 戴雪 来源：中国科学院大学 年份：2015 文献类型 ：学位论文
- 描述：鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 作者： 戴雪 来源：中国科学院大学 年份：2015 文献类型 ：学位论文
- 描述：鄱阳湖水位波动变化及其对洲滩湿地典型植被景观带空间分布的影响
- 鄱阳湖湖泊水位与面积的关系评估
- 作者： 周洋 张增信 王言鑫 来源：科技通报 年份：2015 文献类型 ：期刊 关键词： 水位 鄱阳湖 模型 面积
- 描述：研究结果进行评估。因此要评估不同站点水位关系及模拟面积的差值,结果发现:(1)星子、都昌和湖口3站的水位具有很高相关性,由拟合公式知,枯水、平水及洪水期时,星子水位平均每上升1 m,都昌站在三个时期平均上升
- 全文：研究结果进行评估。因此要评估不同站点水位关系及模拟面积的差值,结果发现:(1)星子、都昌和湖口3站的水位具有很高相关性,由拟合公式知,枯水、平水及洪水期时,星子水位平均每上升1 m,都昌站在三个时期平均上升
- 梅西湖与鄱阳湖水位变化关系及其水量交换过程分析
- 作者： 冯文娟 徐力刚 范宏翔 李新艳 董磊 来源：陕西师范大学学报(自然科学版) 年份：2015 文献类型 ：期刊 关键词： 水位 梅西湖 水量交换 鄱阳湖 湿地
- 描述：以鄱阳湖水文站点和梅西湖2011—2012年的水位资料为基础,基于主成分分析方法,选择修水站水位表征鄱阳湖的总体水位;以梅西湖为例来分析典型碟形洼地与鄱阳湖大湖区之间的水位关系,根据丰枯水位的涨落
- 全文：以鄱阳湖水文站点和梅西湖2011—2012年的水位资料为基础,基于主成分分析方法,选择修水站水位表征鄱阳湖的总体水位;以梅西湖为例来分析典型碟形洼地与鄱阳湖大湖区之间的水位关系,根据丰枯水位的涨落