检索结果相关分组
- 鄱阳湖星子站水位62变化规律分析
- 作者： 刘恋 曾繁翔 付志强 来源：人民长江 年份：2016 文献类型 ：期刊
- 描述：鄱阳湖星子站水位62变化规律分析
- 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.
- 鄱阳湖特大桥36号主墩钢围堰施工专项方案
- 作者： 郭跃 来源：四川水泥 年份：2016 文献类型 ：期刊 关键词： 预防措施 围堰施工工序 鄱阳湖特大桥
- 描述：桥梁工程建设中,围堰的施工技术是工程施工中的重点和难点,本文结合一个实际的桥梁施工方案,对它的施工设计和整体部署进行介绍,对该项工程的围堰施工的具体流程进行分析,做好各个方面的预防工作,为本项工程能够顺利、安全完工提供参考资料。
- 全文：桥梁工程建设中,围堰的施工技术是工程施工中的重点和难点,本文结合一个实际的桥梁施工方案,对它的施工设计和整体部署进行介绍,对该项工程的围堰施工的具体流程进行分析,做好各个方面的预防工作,为本项工程能够顺利、安全完工提供参考资料。
- 环鄱阳湖城市群：生态保护与发展经济兼顾
- 作者：暂无 来源：小康 年份：2015 文献类型 ：期刊
- 描述：环鄱阳湖城市群：生态保护与发展经济兼顾
- 鄱阳湖入湖主要污染物浓度变化趋势分析
- 作者： 贾娟娟 罗勇 张健 陈晓峰 肖南娇 来源：江西科学 年份：2015 文献类型 ：期刊 关键词： 趋势分析 水质 主要污染物
- 描述：通过同步监测2010-2014年入湖监测断面水质,分析了化学需氧量、氨氮、总磷和总氮4项污染物的变化趋势。结果表明,除总磷外,化学需氧量、氨氮和总氮3项污染物浓度总体上均有不同程度的上升趋势,应引起有关部门的重视。
- 全文：通过同步监测2010-2014年入湖监测断面水质,分析了化学需氧量、氨氮、总磷和总氮4项污染物的变化趋势。结果表明,除总磷外,化学需氧量、氨氮和总氮3项污染物浓度总体上均有不同程度的上升趋势,应引起有关部门的重视。
- 鄱阳湖湖区大鳞副泥鳅与青鳅秋繁性能比较研究
- 作者： 付辉云 王海华 张燕萍 吴斌 陈文静 张斌华 李志祥 来源：农业科学与技术(英文版) 年份：2015 文献类型 ：期刊 关键词： 青鳅 秋繁 大鳞副泥鳅
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描述：对大鳞副泥鳅和青鳅秋季繁殖性能进行初步的比较研究。测定了可数可量性状、肥满度、成熟系数、相对怀卵量、受精率和孵化率,得出了生长方程。结果表明,肥满度在两种鳅之间差异不显著(P>0.05),但发现大鳞副泥鳅雌雄差异不显著(P>0.05),而青鳅雌雄差异显著(0.01
- 全文：对大鳞副泥鳅和青鳅秋季繁殖性能进行初步的比较研究。测定了可数可量性状、肥满度、成熟系数、相对怀卵量、受精率和孵化率,得出了生长方程。结果表明,肥满度在两种鳅之间差异不显著(P>0.05),但发现大鳞副泥鳅雌雄差异不显著(P>0.05),而青鳅雌雄差异显著(0.01
- 全文：对大鳞副泥鳅和青鳅秋季繁殖性能进行初步的比较研究。测定了可数可量性状、肥满度、成熟系数、相对怀卵量、受精率和孵化率,得出了生长方程。结果表明,肥满度在两种鳅之间差异不显著(P>0.05),但发现大鳞副泥鳅雌雄差异不显著(P>0.05),而青鳅雌雄差异显著(0.01
- 淹没对鄱阳湖洲滩灰化苔草化感抑藻的影响
- 作者： 李林 陈峰 赵荣芳 来源：草业科学 年份：2015 文献类型 ：期刊 关键词： 化感 多糖 细胞直径 抑制率 灰化苔草
- 描述：~1.8和1.7~2.0 pg·cell-1,微囊藻胞外多糖的积累形成胞外胶鞘并单细胞形成群体以抵御化感抑藻的胁迫作用。本研究为采用生态调控水位实现植物化感抑藻提供基础试验数据。
- 全文：~1.8和1.7~2.0 pg·cell-1,微囊藻胞外多糖的积累形成胞外胶鞘并单细胞形成群体以抵御化感抑藻的胁迫作用。本研究为采用生态调控水位实现植物化感抑藻提供基础试验数据。
- 鄱阳湖水利枢纽与渔业关系探讨
- 作者： 吴斌 傅培峰 胡文娟 王伟萍 来源：渔业致富指南 年份：2014 文献类型 ：期刊 关键词： 鄱阳湖生态 生态环境 水利工程建设 淡水生态系统 生态系统服务 水产品总产量 鄱阳湖流域 全球生态系统 生态补偿 五大淡水湖
- 描述：联合国千年生态系统评估指出,1960-2000年,伴随全球人口成倍增长和全球经济的迅速发展,对生态系统服务的需求呈6倍以上的速度增长。同时,近2/3的全球生态系统服务处于退化中。由于人类对水资源的不合理利用,淡水生态系统已经被改变,世界上
- 全文：联合国千年生态系统评估指出,1960-2000年,伴随全球人口成倍增长和全球经济的迅速发展,对生态系统服务的需求呈6倍以上的速度增长。同时,近2/3的全球生态系统服务处于退化中。由于人类对水资源的不合理利用,淡水生态系统已经被改变,世界上
- 鄱阳湖沙区农户对土地利用变化的影响
- 作者： 王盼盼 郑林 曹昀 来源：中国水土保持 年份：2014 文献类型 ：期刊
- 描述：鄱阳湖沙区农户对土地利用变化的影响