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基于聚类分析和因子分析的鄱阳湖流域水质时空变化特征及污染源分析
作者: 李艳红 葛刚 胡春华 刘雪莹 周晓岚  来源:南昌大学学报(理科版) 年份:2016 文献类型 :期刊 关键词: 污染源识别  因子分析  鄱阳湖流域  水质  时空变化  聚类分析 
描述:从2011~2015年对鄱阳湖丰、枯水期湖区、出湖口及流入鄱阳湖的5大支流进行采样,测定各项水质指标,运用聚类分析法分析水质时空变化特征,采用因子分析法定性识别了流域水质污染的主要污染源。结果表明
全文:从2011~2015年对鄱阳湖丰、枯水期湖区、出湖口及流入鄱阳湖的5大支流进行采样,测定各项水质指标,运用聚类分析法分析水质时空变化特征,采用因子分析法定性识别了流域水质污染的主要污染源。结果表明
基于LCA方法的生猪产业温室气体排放时空特征分析——以鄱阳湖生态经济区为例
作者: 孔凡斌 王智鹏 潘丹  来源:企业经济 年份:2016 文献类型 :期刊 关键词: 温室气体  生命周期评价方法  生猪产业  鄱阳湖生态经济区  时空特征 
描述:大环节,测算分析了鄱阳湖生态经济区生猪产业温室气体排放的时空特征。结果表明:总量上,2000-2013年鄱阳湖生态经济区生猪产业生命周期及各个环节的当量排放量均呈上升的趋势,其中生猪饲料粮种植、生猪
全文:大环节,测算分析了鄱阳湖生态经济区生猪产业温室气体排放的时空特征。结果表明:总量上,2000-2013年鄱阳湖生态经济区生猪产业生命周期及各个环节的当量排放量均呈上升的趋势,其中生猪饲料粮种植、生猪
鄱阳湖超微型浮游藻类时空分布特征研究
作者: 周建  来源:中国科学院大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖超微型浮游藻类时空分布特征研究
鄱阳湖超微型浮游藻类时空分布特征研究
作者: 周建  来源:中国科学院大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖超微型浮游藻类时空分布特征研究
鄱阳湖超微型浮游藻类时空分布特征研究
作者: 周建  来源:中国科学院大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖超微型浮游藻类时空分布特征研究
鄱阳湖越冬雁鸭类的种群动态与时空分布
作者: 邵明勤 陈斌 蒋剑虹  来源:四川动物 年份:2016 文献类型 :期刊 关键词: 越冬  水禽  丰富度  保护  生境选择 
描述:2014年10月—2015年4月,采用样点法对鄱阳湖5个区域的47个样点中越冬雁鸭类数量与分布进行了调查。共记录雁鸭类18种,包括国家Ⅱ级重点保护动物小天鹅Cygnus columbianus和白额雁Anser albifrons。豆雁Anser fabalis的累计数量最多,其次为小天鹅、白额雁、鸿雁Anser cygnoides和罗纹鸭Anas falcata;斑嘴鸭Anas poecilorhyncha出现频次最高,其次为豆雁、小天鹅、鸿雁和白额雁;斑嘴鸭、豆雁和小天鹅出现湖泊数最多。浅水湖泊、草洲和泥滩是多数越冬雁鸭类偏好的生境。鄱阳湖国家级自然保护区集中了最多、最全的雁鸭类。
全文:2014年10月—2015年4月,采用样点法对鄱阳湖5个区域的47个样点中越冬雁鸭类数量与分布进行了调查。共记录雁鸭类18种,包括国家Ⅱ级重点保护动物小天鹅Cygnus columbianus和白额雁Anser albifrons。豆雁Anser fabalis的累计数量最多,其次为小天鹅、白额雁、鸿雁Anser cygnoides和罗纹鸭Anas falcata;斑嘴鸭Anas poecilorhyncha出现频次最高,其次为豆雁、小天鹅、鸿雁和白额雁;斑嘴鸭、豆雁和小天鹅出现湖泊数最多。浅水湖泊、草洲和泥滩是多数越冬雁鸭类偏好的生境。鄱阳湖国家级自然保护区集中了最多、最全的雁鸭类。
鄱阳湖流域入湖径流时空变化预测
作者: 张静文 郭家力 刘佳 李英海 郭靖  来源:南水北调与水利科技 年份:2016 文献类型 :期刊 关键词: 径流变化  三峡水库  鄱阳湖  统计降尺度  气候变化 
描述:对鄱阳湖未来入湖径流变化的准确预测可为“后三峡”时期水资源调度决策提供理论依据。基于实测资料发现,三峡水库蓄水后,鄱阳湖入湖年径流及各调度期径流均不同程度减少。通过ASD(Automated Statistical Downscaling)统计降尺度方法将GCM(General Circulation Model)输出数据与新安江水文模型耦合,得到未来鄱阳湖流域“五河七口”的入湖径流过程。结果表明,未来年径流相比实测变化幅度更小,偏多和偏少交替出现;集水面积较大的赣江、抚河和信江对鄱阳湖径流变化的贡献最大;无论A2还是B2情景下,均是蓄水期变化幅度最大、枯水期最小,且各调度期的入湖径流变化程度比年径流更大。
全文:对鄱阳湖未来入湖径流变化的准确预测可为“后三峡”时期水资源调度决策提供理论依据。基于实测资料发现,三峡水库蓄水后,鄱阳湖入湖年径流及各调度期径流均不同程度减少。通过ASD(Automated Statistical Downscaling)统计降尺度方法将GCM(General Circulation Model)输出数据与新安江水文模型耦合,得到未来鄱阳湖流域“五河七口”的入湖径流过程。结果表明,未来年径流相比实测变化幅度更小,偏多和偏少交替出现;集水面积较大的赣江、抚河和信江对鄱阳湖径流变化的贡献最大;无论A2还是B2情景下,均是蓄水期变化幅度最大、枯水期最小,且各调度期的入湖径流变化程度比年径流更大。
鄱阳湖生态经济区城市土地利用效率时空差异及其影响因素分析
作者: 谢花林 张道贝 王伟  来源:农林经济管理学报 年份:2016 文献类型 :期刊 关键词: 城市土地利用效率  Super  SBM模型  鄱阳湖生态经济区 
描述:基于Super-SBM模型测算2002—2014年鄱阳湖生态经济区12个城市土地利用效率的时空差异,对其进行影响因素的实证分析和收敛性检验。结果表明:(1)城市土地利用效率呈波动发展趋势,县级市
全文:基于Super-SBM模型测算2002—2014年鄱阳湖生态经济区12个城市土地利用效率的时空差异,对其进行影响因素的实证分析和收敛性检验。结果表明:(1)城市土地利用效率呈波动发展趋势,县级市
鄱阳湖生态经济区耕地利用效率时空差异及其影响因素分析
作者: 谢花林 张道贝 王伟 谢雪 吴箐 程玲娟  来源:水土保持研究 年份:2016 文献类型 :期刊 关键词: 数据包络分析(DEA)  Tobit回归模型  鄱阳湖生态经济区  耕地利用效率 
描述:效率和规模效率的变化影响,但规模效率对其影响更大;鄱阳湖生态经济区各县(市)耕地利用效率存在较大的时空差异性;从耕地利用效率的影响因素来看,各因素对耕地利用效率具有不同方向和不同程度的影响,按从大到
全文:效率和规模效率的变化影响,但规模效率对其影响更大;鄱阳湖生态经济区各县(市)耕地利用效率存在较大的时空差异性;从耕地利用效率的影响因素来看,各因素对耕地利用效率具有不同方向和不同程度的影响,按从大到
鄱阳湖流域史前人类遗址时空分布及其环境响应
作者: 徐佳佳 贾玉连 马春梅 朱诚 吴立 李育远 王鑫浩  来源:地理学报(英文版) 年份:2016 文献类型 :期刊 关键词: expanded  northward  geographic  records  环境响应  鄱阳湖流域  climatic  ancient  Holocene  southeast 
描述:The temporal-spatial geographic distribution of archaeological sites and its feature between 10.0–2.8 ka BP(ka BP= thousands of years before 0 BP, where “0 BP” is defined as the year AD 1950) were determined, based on GIS spatial analysis in the Poyang Lake Basin. The relationship between geographic distribution of sites of different periods under subsistence existence of ancient civilizations, climate and environmental change was investigated. The results revealed numerous archaeological sites of the Neolithic Age(10.0–3.6 ka BP). The sites were mainly located in the northern part of the Poyang Lake Basin, a hilly and mountainous area with many river terraces suitable for the development of human civilization. The number of archaeological sites rapidly increased during the Shang and Zhou dynasties(3.6–2.8 ka BP) and spread widely on the floodplains of the middle and lower reaches of Ganjiang River and onto the west, south, and southeast beach areas of the Poyang Lake. Holocene records of climate change suggested that it was possible that climate fluctuations had a great impact on human evolution in the study area. Before 3.6 ka BP, westward and northward expansion of Neolithic cultures in the Poyang Lake watershed occurred under the background of climate amelioration(becoming warmer and wetter). The ancient people lived in the hilly areas with high elevation. The simple mode of a fishing and gathering economy was mostly suited to this area in the early Neolithic Age. The scope of human activities was expanded and cultural diversity developed in the late Neolithic Age. However, with population growth and increasing survival pressure in a dry-cold climatic stage after 3.6 ka BP, this simple living mode had to be abandoned, and various forms of economy, the majority being agriculture, were developed on flood plains of the lower reaches of numerous rivers around Poyang Lake. This promoted flourishing of the Bronze culture of South China.
全文:The temporal-spatial geographic distribution of archaeological sites and its feature between 10.0–2.8 ka BP(ka BP= thousands of years before 0 BP, where “0 BP” is defined as the year AD 1950) were determined, based on GIS spatial analysis in the Poyang Lake Basin. The relationship between geographic distribution of sites of different periods under subsistence existence of ancient civilizations, climate and environmental change was investigated. The results revealed numerous archaeological sites of the Neolithic Age(10.0–3.6 ka BP). The sites were mainly located in the northern part of the Poyang Lake Basin, a hilly and mountainous area with many river terraces suitable for the development of human civilization. The number of archaeological sites rapidly increased during the Shang and Zhou dynasties(3.6–2.8 ka BP) and spread widely on the floodplains of the middle and lower reaches of Ganjiang River and onto the west, south, and southeast beach areas of the Poyang Lake. Holocene records of climate change suggested that it was possible that climate fluctuations had a great impact on human evolution in the study area. Before 3.6 ka BP, westward and northward expansion of Neolithic cultures in the Poyang Lake watershed occurred under the background of climate amelioration(becoming warmer and wetter). The ancient people lived in the hilly areas with high elevation. The simple mode of a fishing and gathering economy was mostly suited to this area in the early Neolithic Age. The scope of human activities was expanded and cultural diversity developed in the late Neolithic Age. However, with population growth and increasing survival pressure in a dry-cold climatic stage after 3.6 ka BP, this simple living mode had to be abandoned, and various forms of economy, the majority being agriculture, were developed on flood plains of the lower reaches of numerous rivers around Poyang Lake. This promoted flourishing of the Bronze culture of South China.
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