检索结果相关分组
- 鄱阳湖刀鲚繁殖群体生物学参数及生长特性的初步分析
- 作者： 吴斌 方春林 张燕萍 傅培峰 熊小英 周辉明 贺刚 王生 王庆萍 来源：水产科学 年份：2016 文献类型 ：期刊 关键词： 刀鲚 资源量 鄱阳湖 生物学参数 FiSATⅡ
- 描述：67.94g,平均丰满度为0.29±0.04(0.14~0.49),总死亡系数为1.36a-1,自然死亡系数为0.52a-1,捕捞死亡系数为0.84a-1。鄱阳湖刀鲚开发率为0.61,处于资源过度利用状态。
- 全文：67.94g,平均丰满度为0.29±0.04(0.14~0.49),总死亡系数为1.36a-1,自然死亡系数为0.52a-1,捕捞死亡系数为0.84a-1。鄱阳湖刀鲚开发率为0.61,处于资源过度利用状态。
- 鄱阳湖刀鲚繁殖群体生物学参数及生长特性的初步分析
- 作者： 吴斌 方春林 张燕萍 傅培峰 熊小英 周辉明 贺刚 王生 王庆萍 来源：水产科学 年份：2016 文献类型 ：期刊 关键词： 刀鲚 资源量 鄱阳湖 生物学参数 FiSATⅡ
- 描述：67.94g,平均丰满度为0.29±0.04(0.14~0.49),总死亡系数为1.36a-1,自然死亡系数为0.52a-1,捕捞死亡系数为0.84a-1。鄱阳湖刀鲚开发率为0.61,处于资源过度利用状态。
- 全文：67.94g,平均丰满度为0.29±0.04(0.14~0.49),总死亡系数为1.36a-1,自然死亡系数为0.52a-1,捕捞死亡系数为0.84a-1。鄱阳湖刀鲚开发率为0.61,处于资源过度利用状态。
- 基于能值的鄱阳湖生态经济区耕地利用集约度时空差异分析
- 作者： 谢花林 何亚芬 邹金浪 吴群 来源：Journal of Geographical Sciences 年份：2016 文献类型 ：期刊 关键词： 鄱阳湖生态 cultivated eastern proportion agricultural pesticide county counties fertilizer moderate
- 描述： Zone from 2000 to 2010. The results are obtained as follows:(1) Over a period of 10 years
- 全文： Zone from 2000 to 2010. The results are obtained as follows:(1) Over a period of 10 years
- 鄱阳湖非繁殖期水鸟的微生境利用及对水位的响应
- 作者： 邵明勤 蒋剑虹 戴年华 来源：生态学杂志 年份：2016 文献类型 ：期刊 关键词： 水位 水鸟 鄱阳湖 生境利用
- 描述：为了解鄱阳湖水鸟的微生境利用及对水位的响应,2014年10月—2015年4月采用样点法对鄱阳湖5个区域52个样点的水鸟数量和微生境利用进行了调查。结果表明:小天鹅(Cygnus columbianus)、鹤鹬(Tringa erythropus)和白琵鹭(Platalea leucorodia)等8种水鸟以浅水生境为主,豆雁(Anser fabalis)、鸿雁(Anser cygnoides)和赤麻鸭(Tadorna ferruginea)以浅水和草洲生境为主,白额雁(Anser albifrons)和灰鹤(Grus grus)以草洲生境为主,白骨顶(Fulica atra)和凤头??(Podiceps cristatus)以深水生境为主,红嘴鸥(Larus ridibundus)和小??(Tachybaptus ruficollis)以深水和浅水生境为主。通过分析水鸟数量与星子站水位的关系表明:鄱阳湖水鸟总数量与水位呈负相关,鄱阳湖国家级自然保护区吴城片区、都昌候鸟省级自然保护区和进贤区域在水位为8 m左右出现水鸟数量高峰,而鄱阳湖国家级自然保护区恒丰片区、南矶湿地国家级自然保护区和东鄱阳湖湿地公园在水位为10~12m时数量最多;各区域水位与不同科及不同种水鸟的分布数量主要呈负相关,??科水鸟因潜水取食需要一定水深,其分布数量与水位在一些区域呈显著正相关。
- 全文：为了解鄱阳湖水鸟的微生境利用及对水位的响应,2014年10月—2015年4月采用样点法对鄱阳湖5个区域52个样点的水鸟数量和微生境利用进行了调查。结果表明:小天鹅(Cygnus columbianus)、鹤鹬(Tringa erythropus)和白琵鹭(Platalea leucorodia)等8种水鸟以浅水生境为主,豆雁(Anser fabalis)、鸿雁(Anser cygnoides)和赤麻鸭(Tadorna ferruginea)以浅水和草洲生境为主,白额雁(Anser albifrons)和灰鹤(Grus grus)以草洲生境为主,白骨顶(Fulica atra)和凤头??(Podiceps cristatus)以深水生境为主,红嘴鸥(Larus ridibundus)和小??(Tachybaptus ruficollis)以深水和浅水生境为主。通过分析水鸟数量与星子站水位的关系表明:鄱阳湖水鸟总数量与水位呈负相关,鄱阳湖国家级自然保护区吴城片区、都昌候鸟省级自然保护区和进贤区域在水位为8 m左右出现水鸟数量高峰,而鄱阳湖国家级自然保护区恒丰片区、南矶湿地国家级自然保护区和东鄱阳湖湿地公园在水位为10~12m时数量最多;各区域水位与不同科及不同种水鸟的分布数量主要呈负相关,??科水鸟因潜水取食需要一定水深,其分布数量与水位在一些区域呈显著正相关。
- 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.