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鄱阳湖日本沼虾捕捞种群生长与结构分析
作者: 付辉云 张燕萍 方春林 周辉明 傅培峰  来源:江西水产科技 年份:2015 文献类型 :期刊 关键词: 种群结构  鄱阳湖  日本沼虾  体长体重关系 
描述:日本沼虾为鄱阳湖的优势种群,在全湖均有分布,2013年4月至11月对鄱阳湖日本沼虾进行了调查,调查结果表明:在采集的标本中,最大体长8.1cm,最小体长1.7cm,其捕捞群体以体长为2.0
全文:日本沼虾为鄱阳湖的优势种群,在全湖均有分布,2013年4月至11月对鄱阳湖日本沼虾进行了调查,调查结果表明:在采集的标本中,最大体长8.1cm,最小体长1.7cm,其捕捞群体以体长为2.0
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.
鄱阳湖湖区主要微生物生理群数量与环境因子关系研究
作者: 张志红 于一尊 黄江丽 张国华 谭胤静 郑国华 涂祖新 陈宇炜  来源:生态环境学报 年份:2015 文献类型 :期刊 关键词: 富营养化  鄱阳湖  氮循环微生物 
描述:·100 m L-1。氨化细菌(Ammonifying bacteria)、亚硝化细菌(Nitrosobacteria)和反硝化细菌(Denitrifying bacteria)数量较少,平均为975.11
全文:·100 m L-1。氨化细菌(Ammonifying bacteria)、亚硝化细菌(Nitrosobacteria)和反硝化细菌(Denitrifying bacteria)数量较少,平均为975.11
鄱阳湖湖区主要微生物生理群数量与环境因子关系研究
作者: 张志红 于一尊 黄江丽 张国华 谭胤静 郑国华 涂祖新 陈宇炜  来源:生态环境学报 年份:2015 文献类型 :期刊 关键词: 富营养化  鄱阳湖  氮循环微生物 
描述:·100 m L-1。氨化细菌(Ammonifying bacteria)、亚硝化细菌(Nitrosobacteria)和反硝化细菌(Denitrifying bacteria)数量较少,平均为975.11
全文:·100 m L-1。氨化细菌(Ammonifying bacteria)、亚硝化细菌(Nitrosobacteria)和反硝化细菌(Denitrifying bacteria)数量较少,平均为975.11
鄱阳湖越冬水鸟栖息地评价*
作者: 夏少霞 刘观华 于秀波 刘宇  来源:湖泊科学 年份:2015 文献类型 :期刊 关键词: 栖息地重要性  水鸟栖息地  鄱阳湖  模糊综合评价法 
描述:参照国际重要鸟区的评定标准,建立基于种群数量综合因子、物种多样性因子、保护物种综合因子的水鸟栖息地重要性评价因子集,采用模糊综合法评估鄱阳湖62个子湖泊作为越冬水鸟栖息地的重要性.结果表明:(1
全文:参照国际重要鸟区的评定标准,建立基于种群数量综合因子、物种多样性因子、保护物种综合因子的水鸟栖息地重要性评价因子集,采用模糊综合法评估鄱阳湖62个子湖泊作为越冬水鸟栖息地的重要性.结果表明:(1
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
基于GPS遥测的江西鄱阳湖越冬白枕鹤(Grus vipio)活动区和栖息地选择研究
作者: 程雅畅  来源:北京林业大学 年份:2015 文献类型 :学位论文 关键词: GPS遥测  白枕鹤  栖息地选择  鄱阳湖  活动区 
描述:白枕鹤(Grus vipio)是东北亚地区特有的鹤类,被世界自然保护联盟(IUCN)列为易危(vulnerable, VU),近二十年在我国越冬的种群数量呈现急剧下降趋势,亟需关注和研究。利用GPS
全文:白枕鹤(Grus vipio)是东北亚地区特有的鹤类,被世界自然保护联盟(IUCN)列为易危(vulnerable, VU),近二十年在我国越冬的种群数量呈现急剧下降趋势,亟需关注和研究。利用GPS
基于GPS遥测的江西鄱阳湖越冬白枕鹤(Grus vipio)活动区和栖息地选择研究
作者: 程雅畅  来源:北京林业大学 年份:2015 文献类型 :学位论文 关键词: GPS遥测  白枕鹤  栖息地选择  鄱阳湖  活动区 
描述:白枕鹤(Grus vipio)是东北亚地区特有的鹤类,被世界自然保护联盟(IUCN)列为易危(vulnerable, VU),近二十年在我国越冬的种群数量呈现急剧下降趋势,亟需关注和研究。利用GPS
全文:白枕鹤(Grus vipio)是东北亚地区特有的鹤类,被世界自然保护联盟(IUCN)列为易危(vulnerable, VU),近二十年在我国越冬的种群数量呈现急剧下降趋势,亟需关注和研究。利用GPS
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