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鄱阳湖流域克氏原螯虾的资源状况及长江中下游克氏原螯虾遗传多样性研究
作者: 黄羽  来源:南昌大学 年份:2012 文献类型 :学位论文 关键词: 克氏原螯虾  生活史  遗传多样性  长江中下游  寿命  AFLP  鄱阳湖  生物检测 
描述:牛蛙饵料由美国移植到日本的本州,30年代末由日本引入到中国,在南京和滁县附近地区生长繁殖后沿长江流域自然扩散。在过去相当长的一段时间,国人将克氏原螯虾视为一种入侵物种。最近几年,随着克氏原螯虾商业化需求
全文:牛蛙饵料由美国移植到日本的本州,30年代末由日本引入到中国,在南京和滁县附近地区生长繁殖后沿长江流域自然扩散。在过去相当长的一段时间,国人将克氏原螯虾视为一种入侵物种。最近几年,随着克氏原螯虾商业化需求
鄱阳湖流域克氏原螯虾的资源状况及长江中下游克氏原螯虾遗传多样性研究
作者: 黄羽  来源:南昌大学 年份:2012 文献类型 :学位论文 关键词: 克氏原螯虾  生活史  遗传多样性  长江中下游  寿命  AFLP  鄱阳湖  生物检测 
描述:牛蛙饵料由美国移植到日本的本州,30年代末由日本引入到中国,在南京和滁县附近地区生长繁殖后沿长江流域自然扩散。在过去相当长的一段时间,国人将克氏原螯虾视为一种入侵物种。最近几年,随着克氏原螯虾商业化需求
全文:牛蛙饵料由美国移植到日本的本州,30年代末由日本引入到中国,在南京和滁县附近地区生长繁殖后沿长江流域自然扩散。在过去相当长的一段时间,国人将克氏原螯虾视为一种入侵物种。最近几年,随着克氏原螯虾商业化需求
长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
作者: 于悦  来源:华中农业大学 年份:2016 文献类型 :学位论文
描述:长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
作者: 于悦  来源:华中农业大学 年份:2016 文献类型 :学位论文
描述:长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
作者: 于悦  来源:华中农业大学 年份:2016 文献类型 :学位论文
描述:长江、赣江、鄱阳湖鲢遗传多样性和群体遗传结构分析
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.
洞庭湖、鄱阳湖白豚和长江江豚的生态学研究
作者: 杨健 肖文 匡新安 魏卓 刘仁俊  来源:长江流域资源与环境(学报) 年份:2000 文献类型 :期刊
描述:洞庭湖、鄱阳湖白豚和长江江豚的生态学研究
鄱阳湖生态经济区双季稻绿色高效循环生产关键技术集成与示范——湖口示范区田间展示为例
作者: 徐银腾 陈晓 阳健 杨秋林 欧阳建荣 徐拥军 徐松柏 柳成林  来源:农业开发与装备 年份:2017 文献类型 :期刊 关键词: 双季稻  有机肥  施肥试验 
描述:依据江西省农业科学院土肥所提供的双季稻猪粪有机肥+水稻的资源高效循环利用技术模式试验方案的要求,建立相关技术核心试验区、示范区和辐射区。使研究成果得到充分应用和转化,促进周边地区水稻增产增收。并在湖口县均桥镇均桥村种粮大户蔡初成承包的水稻田进行了示范展示。
全文:依据江西省农业科学院土肥所提供的双季稻猪粪有机肥+水稻的资源高效循环利用技术模式试验方案的要求,建立相关技术核心试验区、示范区和辐射区。使研究成果得到充分应用和转化,促进周边地区水稻增产增收。并在湖口县均桥镇均桥村种粮大户蔡初成承包的水稻田进行了示范展示。
池塘主养鄱阳湖土鲶成鱼试验
作者: 姜青龙 熊春贤 姚毅  来源:吉林农业 年份:2016 文献类型 :期刊 关键词: 成鱼  池塘主养  土鲶 
描述:2015年南昌市农业科学院开展了池塘主养鄱阳湖土鲶成鱼试验,试验池塘1口,面积2700平方米。放养当年培育的F1代大规格苗种(全长10厘米以上)4000尾,经200天养殖,收获均重0.55公斤的成鱼3750尾,成活率达94%,每亩产土鲶515公斤,产值12360元。
全文:2015年南昌市农业科学院开展了池塘主养鄱阳湖土鲶成鱼试验,试验池塘1口,面积2700平方米。放养当年培育的F1代大规格苗种(全长10厘米以上)4000尾,经200天养殖,收获均重0.55公斤的成鱼3750尾,成活率达94%,每亩产土鲶515公斤,产值12360元。
池塘主养鄱阳湖土鲶成鱼试验
作者: 姜青龙 熊春贤 姚毅  来源:吉林农业(上半月) 年份:2016 文献类型 :期刊 关键词: 成鱼  池塘主养  土鲶 
描述:2015年南昌市农业科学院开展了池塘主养鄱阳湖土鲶成鱼试验,试验池塘1口,面积2700平方米。放养当年培育的F1代大规格苗种(全长10厘米以上)4000尾,经200天养殖,收获均重0.55公斤的成鱼3750尾,成活率达94%,每亩产土鲶515公斤,产值12360元。
全文:2015年南昌市农业科学院开展了池塘主养鄱阳湖土鲶成鱼试验,试验池塘1口,面积2700平方米。放养当年培育的F1代大规格苗种(全长10厘米以上)4000尾,经200天养殖,收获均重0.55公斤的成鱼3750尾,成活率达94%,每亩产土鲶515公斤,产值12360元。
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