检索结果相关分组
- 鄱阳湖流域生态系统水源涵养量估算
- 作者： 杨帆 来源：内蒙古师范大学 年份：2016 文献类型 ：学位论文 关键词： LAI反演 统计模型 Landsat8 PROSAIL模型 OLI
- 描述：,选取不同草原类型最优反演模型,得到不同草原类型LAI空间分布图。研究主要得到以下结论：1)建立多种植被指数与地面实测LAI值的相关关系,选择了与LAI相关关系最好的MSAVI植被指数用于建立统计模型
- 全文：,选取不同草原类型最优反演模型,得到不同草原类型LAI空间分布图。研究主要得到以下结论：1)建立多种植被指数与地面实测LAI值的相关关系,选择了与LAI相关关系最好的MSAVI植被指数用于建立统计模型
- 人类活动对鄱阳湖流域侵蚀产沙与输沙的影响
- 作者： 熊梦雅 来源：江西师范大学 年份：2016 文献类型 ：学位论文
- 描述：人类活动对鄱阳湖流域侵蚀产沙与输沙的影响
- 鄱阳湖流域主要河道入湖污染物通量研究
- 作者： 贾娟娟 来源：南昌大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖流域主要河道入湖污染物通量研究
- 鄱阳湖流域生态系统水源涵养量估算
- 作者： 杨帆 来源：内蒙古师范大学 年份：2016 文献类型 ：学位论文 关键词： LAI反演 统计模型 Landsat8 PROSAIL模型 OLI
- 描述：,选取不同草原类型最优反演模型,得到不同草原类型LAI空间分布图。研究主要得到以下结论：1)建立多种植被指数与地面实测LAI值的相关关系,选择了与LAI相关关系最好的MSAVI植被指数用于建立统计模型
- 全文：,选取不同草原类型最优反演模型,得到不同草原类型LAI空间分布图。研究主要得到以下结论：1)建立多种植被指数与地面实测LAI值的相关关系,选择了与LAI相关关系最好的MSAVI植被指数用于建立统计模型
- 人类活动对鄱阳湖流域侵蚀产沙与输沙的影响
- 作者： 熊梦雅 来源：江西师范大学 年份：2016 文献类型 ：学位论文
- 描述：人类活动对鄱阳湖流域侵蚀产沙与输沙的影响
- 鄱阳湖流域主要河道入湖污染物通量研究
- 作者： 贾娟娟 来源：南昌大学 年份：2016 文献类型 ：学位论文
- 描述：鄱阳湖流域主要河道入湖污染物通量研究
- 鄱阳湖流域农田重金属污染的生态风险评估
- 作者： 叶嘉敏 余厚平 简敏菲 魏佳瑶 吴敏然 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： 重金属污染 生态风险 鄱阳湖 乐安河
- 描述：·kg-1;不同评价方法得出乐安河上游至中游区域土壤中重金属Cu呈极度污染状态,存在严重的生态风险隐患;各样点蔬菜重金属Cd含量均超过《无公害蔬菜安全要求》中规定的标准值(0.050 mg·kg-1
- 全文：·kg-1;不同评价方法得出乐安河上游至中游区域土壤中重金属Cu呈极度污染状态,存在严重的生态风险隐患;各样点蔬菜重金属Cd含量均超过《无公害蔬菜安全要求》中规定的标准值(0.050 mg·kg-1
- 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.