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基于MODIS影像估算鄱阳湖泥沙浓度及其时空变化
作者: 刘德坤 齐述华  来源:现代农业科技 年份:2013 文献类型 :期刊 关键词: 鄱阳湖  悬浮泥沙浓度  时空分布  MODIS 
描述:悬浮泥沙浓度是衡量水质的重要指标之一,估算其泥沙浓度及获得其在空间和时间上的分布信息对于保护与管理湖泊生态系统是有利的。该研究以鄱阳湖区域为例,利用MODIS遥感影像,并结合反演模型对鄱阳湖区域的悬浮泥沙浓度进行反演。结果显示:2010年鄱阳湖悬浮泥沙浓度呈明显的时间和空间分布特征
全文:悬浮泥沙浓度是衡量水质的重要指标之一,估算其泥沙浓度及获得其在空间和时间上的分布信息对于保护与管理湖泊生态系统是有利的。该研究以鄱阳湖区域为例,利用MODIS遥感影像,并结合反演模型对鄱阳湖区域的悬浮泥沙浓度进行反演。结果显示:2010年鄱阳湖悬浮泥沙浓度呈明显的时间和空间分布特征
高分辨率区域气候模式CCLM对鄱阳湖流域气温的模拟评估
作者: 孟玉婧 姜彤 苏布达 张杰  来源:中国农业气象 年份:2013 文献类型 :期刊 关键词: 鄱阳湖流域  气温  区域气候模式  CCLM 
描述:—2050年SRESA1B情景下的气温变化进行预估分析。结果表明,(1)CCLM能够较好地模拟出鄱阳湖流域基准期平均气温(Tmean)、最高气温(Tmax)和最低气温(T‰)分别在年、月、日尺度上的时空
全文:—2050年SRESA1B情景下的气温变化进行预估分析。结果表明,(1)CCLM能够较好地模拟出鄱阳湖流域基准期平均气温(Tmean)、最高气温(Tmax)和最低气温(T‰)分别在年、月、日尺度上的时空
高分辨率区域气候模式CCLM对鄱阳湖流域气温的模拟评估
作者: 孟玉婧 姜彤 苏布达 张杰  来源:中国农业气象 年份:2013 文献类型 :期刊 关键词: 鄱阳湖流域  气温  区域气候模式  CCLM 
描述:—2050年SRESA1B情景下的气温变化进行预估分析。结果表明,(1)CCLM能够较好地模拟出鄱阳湖流域基准期平均气温(Tmean)、最高气温(Tmax)和最低气温(T‰)分别在年、月、日尺度上的时空
全文:—2050年SRESA1B情景下的气温变化进行预估分析。结果表明,(1)CCLM能够较好地模拟出鄱阳湖流域基准期平均气温(Tmean)、最高气温(Tmax)和最低气温(T‰)分别在年、月、日尺度上的时空
鄱阳湖水利枢纽工程对水质环境影响研究
作者: 杜彦良 周怀东 毛战坡 刘晓波  来源:中国水利水电科学研究院学报 年份:2011 文献类型 :期刊 关键词: 鄱阳湖  水动力特性  数值模拟  水利枢纽工程  空间分布  水质变化 
描述:相"的湖泊水域变化特征,水质特性为枯水期水质较差,丰水期水质较好,靠近入湖河口的湖区劣于湖心水质,北部出湖水质较好的现状。模型模拟预测在现状外部入流边界和现状污染负荷条件下,3种不同运行方式下,鄱阳湖
全文:相"的湖泊水域变化特征,水质特性为枯水期水质较差,丰水期水质较好,靠近入湖河口的湖区劣于湖心水质,北部出湖水质较好的现状。模型模拟预测在现状外部入流边界和现状污染负荷条件下,3种不同运行方式下,鄱阳湖
鄱阳湖二维水动力和水质耦合数值模拟
作者: 赖锡军 姜加虎 黄群 徐力刚  来源:湖泊科学 年份:2011 文献类型 :期刊 关键词: 数学模型  鄱阳湖  水动力  水质  非结构网格 
描述:适合于模拟鄱阳湖这类水陆界面动态变化极为显著的湖泊中的水流运动及其物质输运过程.在1998年全年水情率定的基础上,计算了2008年1-10月的水动力和水质(高锰酸盐指数和氨氮两个指标)时空分布.并用实测
全文:适合于模拟鄱阳湖这类水陆界面动态变化极为显著的湖泊中的水流运动及其物质输运过程.在1998年全年水情率定的基础上,计算了2008年1-10月的水动力和水质(高锰酸盐指数和氨氮两个指标)时空分布.并用实测
鄱阳湖洪水灾变特征的分析
作者: 闵骞  来源:江西水利科技 年份:1997 文献类型 :期刊 关键词: 洪水  鄱阳湖  灾变度  洪险等级 
描述:根据影响鄱阳湖区洪涝灾害的洪水水文要素,设置综合定量指标,用以刻划鄱阳湖洪水灾变程度.确定鄱阳湖1951~1996年洪水灾变度和洪险等级,分析其变化趋势和频率分布,由此揭示鄱阳湖洪水的灾变特征,为鄱阳湖区历史洪水和洪灾评估、洪涝灾害风险管理及防洪减灾提供基本依据.
全文:根据影响鄱阳湖区洪涝灾害的洪水水文要素,设置综合定量指标,用以刻划鄱阳湖洪水灾变程度.确定鄱阳湖1951~1996年洪水灾变度和洪险等级,分析其变化趋势和频率分布,由此揭示鄱阳湖洪水的灾变特征,为鄱阳湖区历史洪水和洪灾评估、洪涝灾害风险管理及防洪减灾提供基本依据.
鄱阳湖黄鳝的生长特征
作者: 李芝琴 欧阳珊 吴小平 戴银根 胡火庚  来源:动物学杂志 年份:2008 文献类型 :期刊 关键词: 鄱阳湖  黄鳝  年龄  生长 
描述:以基舌骨和脊椎骨作为年龄鉴定的材料,研究了鄱阳湖黄鳝(Monopterus albus)种群的生长特征。结果表明,种群的年龄结构分别为:雌性1~5龄,雄性2~6龄,2~5龄为黄鳝性别的过渡期(间性
全文:以基舌骨和脊椎骨作为年龄鉴定的材料,研究了鄱阳湖黄鳝(Monopterus albus)种群的生长特征。结果表明,种群的年龄结构分别为:雌性1~5龄,雄性2~6龄,2~5龄为黄鳝性别的过渡期(间性
鄱阳湖湖流特征
作者: 王婧 曹卫芳 司武卫 郭章亮  来源:南昌工程学院学报 年份:2015 文献类型 :期刊 关键词: 湖流  鄱阳湖  分布特征 
描述:基于2010—2014年湖流监测资料,分析了鄱阳湖湖流分布特征。结果表明:(1)鄱阳湖北部湖区流速最大,其次为主湖区、入江水道区,东部湖区最小;主槽流速大于洲滩和湖湾;枯水期流速大于平水期和丰水期
全文:基于2010—2014年湖流监测资料,分析了鄱阳湖湖流分布特征。结果表明:(1)鄱阳湖北部湖区流速最大,其次为主湖区、入江水道区,东部湖区最小;主槽流速大于洲滩和湖湾;枯水期流速大于平水期和丰水期
鄱阳湖生态经济区耕地的时空变化
作者: 蒋梅鑫 吴烨 钟业喜  来源:江西师范大学学报(自然科学版) 年份:2016 文献类型 :期刊 关键词: 耕地  鄱阳湖生态经济区  ESDA  时空变化 
描述:显著的阶段性特征,各水平区逐步呈块状分布,耕地重心迁移显示1952—1997年表现为耕地南北差异,而1997—2010年则表现为东西差异;受政策、自然灾害、经济发展水平影响,各县域耕地集约利用差异明显
全文:显著的阶段性特征,各水平区逐步呈块状分布,耕地重心迁移显示1952—1997年表现为耕地南北差异,而1997—2010年则表现为东西差异;受政策、自然灾害、经济发展水平影响,各县域耕地集约利用差异明显
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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