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鄱阳湖湿地CO2通量观测信号扰动特征
作者: 王莉莉 杨涛  来源:湿地科学 年份:2016 文献类型 :期刊 关键词: 鄱阳湖湿地  涡度相关技术  信号强度  CO2通量 
描述:在高动态水位影响下,鄱阳湖区的水面积范围、形态和分布发生着显著的年际变化。受水位变化的影响,鄱阳湖周边湿地植物种群与景观变化十分明显。周期性水位变化和植物变化直接影响湿地生态系统的CO2的吸收与释放
全文:在高动态水位影响下,鄱阳湖区的水面积范围、形态和分布发生着显著的年际变化。受水位变化的影响,鄱阳湖周边湿地植物种群与景观变化十分明显。周期性水位变化和植物变化直接影响湿地生态系统的CO2的吸收与释放
鄱阳湖特大桥工程对长江江豚的影响评价
作者: 邓庆伟 吴迪 王克雄  来源:中国公路 年份:2016 文献类型 :期刊 关键词: 工程方案  省级自然保护区  保护区管理  栖息环境  特大桥工程  主桥桥跨  核心区  种群数量  都昌  生存环境 
描述:长江江豚,是一种生活于我国长江中下游的独特淡水小型鲸类。在过去的几十年中,由于生存环境的改变和恶化,其种群数量呈快速下降趋势。江西鄱阳湖,是长江江豚最为重要的栖息地之一,其种群数量占到整个现存种群
全文:长江江豚,是一种生活于我国长江中下游的独特淡水小型鲸类。在过去的几十年中,由于生存环境的改变和恶化,其种群数量呈快速下降趋势。江西鄱阳湖,是长江江豚最为重要的栖息地之一,其种群数量占到整个现存种群
鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
作者: 蒋剑虹  来源:江西师范大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
作者: 蒋剑虹  来源:江西师范大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
作者: 蒋剑虹  来源:江西师范大学 年份:2016 文献类型 :学位论文
描述:鄱阳湖越冬水鸟数量分布及4种鹤类生态习性研究
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.
2014-2015年度环鄱阳湖地区不同场所禽流感病毒分布情况及其影响因素研究
作者: 严文婧  来源:中国疾病预防控制中心 年份:2016 文献类型 :学位论文 关键词: 禽流感病毒分布  影响因素  阳性率 
描述:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
全文:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
2014-2015年度环鄱阳湖地区不同场所禽流感病毒分布情况及其影响因素研究
作者: 严文婧  来源:中国疾病预防控制中心 年份:2016 文献类型 :学位论文 关键词: 禽流感病毒分布  影响因素  阳性率 
描述:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
全文:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
2014-2015年度环鄱阳湖地区不同场所禽流感病毒分布情况及其影响因素研究
作者: 严文婧  来源:中国疾病预防控制中心 年份:2016 文献类型 :学位论文 关键词: 禽流感病毒分布  影响因素  阳性率 
描述:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
全文:的重要因素。通过此研究可以了解环鄱阳湖地区候鸟迁徙、活禽养殖、活禽贸易等重要环节涉及场所中禽流感病毒阳性率分布情况,并探究其影响因素,可以为禽流感防控提供依据。方法1.问卷调查及现场采样采用随机抽样的方法在
浅水三角洲动态生长过程模型与有利砂体分布——以鄱阳湖赣江三角洲为例
作者: 高志勇 周川闽 董文彤 白斌 李雯  来源:现代地质 年份:2016 文献类型 :期刊 关键词: 砂体预测  沉积演化  鄱阳湖  生长过程模型  浅水三角洲 
描述:浅水三角洲是湖盆内大面积砂体分布的重要成因,但大面积砂体的非均质性较强,预测并寻找有利砂体(甜点)是现今油气勘探的重要需求。通过开展现代赣江三角洲上平原-下平原及河口区多个沉积部位探坑挖掘工作,对探
全文:浅水三角洲是湖盆内大面积砂体分布的重要成因,但大面积砂体的非均质性较强,预测并寻找有利砂体(甜点)是现今油气勘探的重要需求。通过开展现代赣江三角洲上平原-下平原及河口区多个沉积部位探坑挖掘工作,对探
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