理学 >>> 数学 信息科学与系统科学 物理学 化学 天文学 地球科学总论 大气科学 地球物理学 地理学 地质学 水文学 海洋科学 生物学 科学技术史
搜索结果: 1-15 共查到理学 environmental change相关记录17条 . 查询时间(0.109 秒)
A new study shows the eye size of birds can reveal broad patterns of their biology and behavior, including where they live, what they eat and how they hunt, providing a potential roadmap for future co...
全球数以百万计的人依靠湖泊提供多种多样的生态系统服务,人类也使用湖泊作为食物来源和多种经济活动,并且许多生物类群也依赖湖泊生存。然而,尽管湖泊的重要性,我们仍然缺乏人类活动对全球湖泊影响的评估。近日,我院克里斯托(Christos Mammides)副教授在环境科学顶尖期刊《Global Environmental Change》上发表题为:“A global assessment of the ...
Global climate change could cause Africa's Lake Victoria, the world's largest tropical lake and source of the Nile River, to dry up in the next 500 years, according to new NSF-funded findings by a tea...
Since the first Homo sapiens emerged in Africa 300,000 years ago, grasslands have sustained humans and thousands of other species. Today, those grasslands are shifting. Global change -- including clim...
Studies of how global environmental change is impacting marine organisms have long focused on physiological effects—for example, an oyster’s decreased ability to build or maintain a strong shell in an...
The Transantarctic Mountains (TAMs), a 3500 km long chain that subdivides East Antarctica from West Antarctica, are important for reconstructing the tectonic, glacial, and climatic history of Antarc...
This study was designed with the overriding goal of improving our understanding of the nature, causes, and impacts of past climatic conditions in the High Arctic and to evaluate the potential impacts ...
Lakes sediments from the Lofoten Islands, Norway, can be used to generate well resolved records of past climate and environmental change. This dissertation presents three lacustrine paleoenvironmental...
Results of their efforts to understand and anticipate global environmental changes through the process of scenario thinking and ecological forecasting are the topic of the annual National Science Foun...
We present living (stained) benthic foraminifera assemblage data in nine surface sediment samples from the central Barents Sea collected in 2005 and 2006. The abundances of 20 selected species are com...
The main objectives of this study were to reconstruct the environmental conditions for a small oligotrophic lake during the last two centuries, to determine if the environment of the lake was anthropo...
Geomorphic systems are typically nonlinear, owing largely to their threshold-dominated nature (but due to other factors as well). Nonlinear geomorphic systems may exhibit complex behaviors not possibl...
Rising nitrate concentrations in rivers and groundwater in regions with intensive agriculture have been of concern for several decades. Long records of nitrate concentration are rare; in the UK, few p...
The accumulative profiles of seabird and sea animal excrement together with the depositional sequences influenced by the excrement have been utilized to reconstruct the historical populations of Antar...
The paper investigates the historical agricultural exploitation in Northwest China, and its social benefits in the context of historical documents and their relationship with temperature and humidity ...

中国研究生教育排行榜-

正在加载...

中国学术期刊排行榜-

正在加载...

世界大学科研机构排行榜-

正在加载...

中国大学排行榜-

正在加载...

人 物-

正在加载...

课 件-

正在加载...

视听资料-

正在加载...

研招资料 -

正在加载...

知识要闻-

正在加载...

国际动态-

正在加载...

会议中心-

正在加载...

学术指南-

正在加载...

学术站点-

正在加载...