欢迎访问鄱阳湖地域文化特色库!
全部 图书 图片 报纸 期刊 新闻 视频 学位论文 会议论文
检索结果相关分组
相关搜索词
鄱阳湖沙化土地湿地松人工林碳蓄积量研究
作者: 曹昀 杨杰 朱悦 王秀文  来源:生态环境学报 年份:2016 文献类型 :期刊 关键词: 湿地松  植被恢复  鄱阳湖  碳蓄积  沙化土地 
描述: elliottii)人工林碳含量和碳蓄积量,分析碳蓄积量的空间分布及原因。结果表明:随着沙化程度的加大,林分密度减小,碳蓄积量也减小,表现为轻度沙化区>中度沙化区>重度沙化区,其中,(1)乔木层重度
全文: elliottii)人工林碳含量和碳蓄积量,分析碳蓄积量的空间分布及原因。结果表明:随着沙化程度的加大,林分密度减小,碳蓄积量也减小,表现为轻度沙化区>中度沙化区>重度沙化区,其中,(1)乔木层重度
鄱阳湖湿地优势植物叶片-凋落物-土壤碳氮磷化学计量特征
作者: 聂兰琴 吴琴 尧波 付姗 胡启武  来源:生态学报 年份:2016 文献类型 :期刊 关键词: 养分  鄱阳湖  化学计量比  湿地 
描述:—15cm土壤样品测定了碳(C)、氮(N)、磷(P)含量,以阐明不同物种、不同生活型间C、N、P化学计量差异,探讨化学计量垂直分异。结果表明:1)C、N、P含量变化范围分别为:叶片380.6—432.2
全文:—15cm土壤样品测定了碳(C)、氮(N)、磷(P)含量,以阐明不同物种、不同生活型间C、N、P化学计量差异,探讨化学计量垂直分异。结果表明:1)C、N、P含量变化范围分别为:叶片380.6—432.2
鄱阳湖湿地优势植物叶片-凋落物-土壤碳氮磷化学计量特征
作者: 聂兰琴 吴琴 尧波 付姗 胡启武  来源:生态学报 年份:2016 文献类型 :期刊 关键词: 养分  鄱阳湖  化学计量比  湿地 
描述:—15cm土壤样品测定了碳(C)、氮(N)、磷(P)含量,以阐明不同物种、不同生活型间C、N、P化学计量差异,探讨化学计量垂直分异。结果表明:1)C、N、P含量变化范围分别为:叶片380.6—432.2
全文:—15cm土壤样品测定了碳(C)、氮(N)、磷(P)含量,以阐明不同物种、不同生活型间C、N、P化学计量差异,探讨化学计量垂直分异。结果表明:1)C、N、P含量变化范围分别为:叶片380.6—432.2
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.
赣北鄱阳湖地区第四纪黄土的粒度特征及环境意义
作者: 徐传奇 贾玉连 刘倩 凌超豪 王鹏岭  来源:干旱区资源与环境 年份:2016 文献类型 :期刊 关键词: 鄱阳湖  黄土  风积成因  古土壤  粒度特征 
描述:对长江中游南岸鄱阳湖东侧砂山下风向的太平关黄土剖面进行了粒度测试分析,与南京下蜀黄土、巫山黄土和长江河流沉积物进行了对比。结果表明:1)太平关剖面粉砂(5-50μm)含量达到了50%以上,粘土次之
全文:对长江中游南岸鄱阳湖东侧砂山下风向的太平关黄土剖面进行了粒度测试分析,与南京下蜀黄土、巫山黄土和长江河流沉积物进行了对比。结果表明:1)太平关剖面粉砂(5-50μm)含量达到了50%以上,粘土次之
鄱阳湖流域土地利用生态风险格局
作者: 徐羽 钟业喜 冯兴华 徐丽婷 郑林  来源:生态学报 年份:2016 文献类型 :期刊 关键词: 空间格局  生态风险  鄱阳湖流域  土地利用 
描述:以鄱阳湖流域土地利用数据为基础,定量分析2005年以来鄱阳湖流域土地利用变化特征;借助空间自相关、地统计分析等方法,揭示了鄱阳湖流域土地利用变化下生态风险时空演变特征。结果表明:2005—2013年,鄱阳湖流域土地利用转移非农化趋势明显;土地利用生态风险呈小幅上升趋势,在空间分布上具有显著相关性,生态风险“北热南冷”空间分异及等级扩散特征明显;依据空间差值结果可将研究区划分为低生态风险区(ERI<0.15)、较低生态风险区(0.15≤ERI<0.25)、中等生态风险区(0.25≤ERI<0.35)、较高生态风险区(0.35≤ERI<0.45)、高生态风险区(ERI≥0.45)5类;高风险区域主要分布在滨湖区、南昌、九江及赣中部分地区。生态风险等级分布与地形存在显著相关性,随着生态风险等级提高,分布区域表现出明显的地形指向性。以土地利用结构对生态风险进行表征,尝试从宏观上把握大尺度区域生态安全格局,为鄱阳湖流域土地利用格局优化提供了相关借鉴及建议。
全文:以鄱阳湖流域土地利用数据为基础,定量分析2005年以来鄱阳湖流域土地利用变化特征;借助空间自相关、地统计分析等方法,揭示了鄱阳湖流域土地利用变化下生态风险时空演变特征。结果表明:2005—2013年,鄱阳湖流域土地利用转移非农化趋势明显;土地利用生态风险呈小幅上升趋势,在空间分布上具有显著相关性,生态风险“北热南冷”空间分异及等级扩散特征明显;依据空间差值结果可将研究区划分为低生态风险区(ERI<0.15)、较低生态风险区(0.15≤ERI<0.25)、中等生态风险区(0.25≤ERI<0.35)、较高生态风险区(0.35≤ERI<0.45)、高生态风险区(ERI≥0.45)5类;高风险区域主要分布在滨湖区、南昌、九江及赣中部分地区。生态风险等级分布与地形存在显著相关性,随着生态风险等级提高,分布区域表现出明显的地形指向性。以土地利用结构对生态风险进行表征,尝试从宏观上把握大尺度区域生态安全格局,为鄱阳湖流域土地利用格局优化提供了相关借鉴及建议。
鄱阳湖湿地优势植物氮磷再吸收
作者: 郭超 蔡家艳 金奇 周红艳 李敏 胡启武  来源:生态学杂志 年份:2016 文献类型 :期刊 关键词: 湿生植物  挺水植物  养分再吸收  氮磷比  灰化苔草 
描述:于植物生长旺盛期与末期,在鄱阳湖南矶湿地国家级自然保护区分别采集6种优势植物成熟叶片与衰老叶片进行N、P含量测定,以探讨鄱阳湖湿地优势植物的N、P养分再吸收特征。结果表明:6种植物N、P元素的再吸收效率变化范围分别为8.2%~46.6%和18.9%~44.5%,其中,灰化苔草在所有物种中N、P再吸收效率均表现为最低。挺水植物的N、P平均再吸收效率分别为41.3%和38.5%,明显高于湿生植物的N、P平均再吸收效率的19.9%和26.0%。6种植物N、P养分再吸收效率均与成熟叶片的N、P养分含量呈显著正相关,且N再吸收效率与成熟叶片N∶P值呈显著正相关。依据养分再吸收指标来判断,鄱阳湖湿地6种优势植物均属于N再吸收能力较弱的物种。
全文:于植物生长旺盛期与末期,在鄱阳湖南矶湿地国家级自然保护区分别采集6种优势植物成熟叶片与衰老叶片进行N、P含量测定,以探讨鄱阳湖湿地优势植物的N、P养分再吸收特征。结果表明:6种植物N、P元素的再吸收效率变化范围分别为8.2%~46.6%和18.9%~44.5%,其中,灰化苔草在所有物种中N、P再吸收效率均表现为最低。挺水植物的N、P平均再吸收效率分别为41.3%和38.5%,明显高于湿生植物的N、P平均再吸收效率的19.9%和26.0%。6种植物N、P养分再吸收效率均与成熟叶片的N、P养分含量呈显著正相关,且N再吸收效率与成熟叶片N∶P值呈显著正相关。依据养分再吸收指标来判断,鄱阳湖湿地6种优势植物均属于N再吸收能力较弱的物种。
鄱阳湖湿地优势植物氮磷再吸收
作者: 郭超 蔡家艳 金奇 周红艳 李敏 胡启武  来源:生态学杂志 年份:2016 文献类型 :期刊 关键词: 湿生植物  挺水植物  养分再吸收  氮磷比  灰化苔草 
描述:于植物生长旺盛期与末期,在鄱阳湖南矶湿地国家级自然保护区分别采集6种优势植物成熟叶片与衰老叶片进行N、P含量测定,以探讨鄱阳湖湿地优势植物的N、P养分再吸收特征。结果表明:6种植物N、P元素的再吸收效率变化范围分别为8.2%~46.6%和18.9%~44.5%,其中,灰化苔草在所有物种中N、P再吸收效率均表现为最低。挺水植物的N、P平均再吸收效率分别为41.3%和38.5%,明显高于湿生植物的N、P平均再吸收效率的19.9%和26.0%。6种植物N、P养分再吸收效率均与成熟叶片的N、P养分含量呈显著正相关,且N再吸收效率与成熟叶片N∶P值呈显著正相关。依据养分再吸收指标来判断,鄱阳湖湿地6种优势植物均属于N再吸收能力较弱的物种。
全文:于植物生长旺盛期与末期,在鄱阳湖南矶湿地国家级自然保护区分别采集6种优势植物成熟叶片与衰老叶片进行N、P含量测定,以探讨鄱阳湖湿地优势植物的N、P养分再吸收特征。结果表明:6种植物N、P元素的再吸收效率变化范围分别为8.2%~46.6%和18.9%~44.5%,其中,灰化苔草在所有物种中N、P再吸收效率均表现为最低。挺水植物的N、P平均再吸收效率分别为41.3%和38.5%,明显高于湿生植物的N、P平均再吸收效率的19.9%和26.0%。6种植物N、P养分再吸收效率均与成熟叶片的N、P养分含量呈显著正相关,且N再吸收效率与成熟叶片N∶P值呈显著正相关。依据养分再吸收指标来判断,鄱阳湖湿地6种优势植物均属于N再吸收能力较弱的物种。
Rss订阅