搜索结果: 46-60 共查到“知识要闻 自然地理学”相关记录445条 . 查询时间(1.937 秒)
Uncovering process domains in large rivers: Patterns and potential drivers of benthic substrate heterogeneity in two North American riverscapes
rivers North American benthic
2021/7/23
Identifying and understanding functional process domains (sensu Montgomery, 1999) in rivers is paramount for linking the physical habitat template to ecosystem structure and function.
1960-2019年长江流域极端降水变化及其与全球变暖、ENSO和局部影响的关系
长江流域 降水 全球变暖 ENSO
2021/7/22
Extreme precipitation events can pose great risks to natural ecosystems and human society. Investigating past changes in the frequency, intensity, and duration of such events and understanding the pos...
Changing sources and processes sustaining surface CO2 and CH4 fluxes along a tropical river to reservoir system
CO2 CH4 surface flux lakes
2021/7/23
Freshwaters are important emitters of carbon dioxide (CO2) and methane (CH4), two potent greenhouse gases (GHGs).
第三极地区主要河流历史径流变化获解析
第三极地区 河流 历史径流
2021/7/22
来自该中国科学院青藏高原研究所等单位的研究人员构建了第三极地区主要河流的出山口径流监测网，获取了宝贵的跨境河流资料，为河川径流量的数值模拟和遥感反演等提供了有效的验证资料；通过冰冻圈水文模型，定量解析了第三极地区主要河流的历史径流变化。相关成果发表于《美国气象学会通报》。
中国黄河流域水产量的人-自然系统耦合分析
黄河 水产量 自然系统 耦合分析
2021/7/23
In response to the potential water conflict caused by climate change and increased population, an integrated water yield analysis from the perspective of the coupled human-natural system is clearly re...
Continental-scale effects of phytoplankton and non-phytoplankton turbidity on macrophyte occurrence in shallow lakes
lakes phytoplankton biological
2021/7/23
Submerged macrophytes are key components of shallow lake biological communities, and their presence has been associated with a predominantly clear-water state.
河湖连续体中浮游细菌群落的空间和温度模式
河湖 细菌 空间 温度
2021/7/23
Bacterioplankton play critical roles in biogeochemical cycling. Although spatial and temporal variations in bacterioplankton community compositions (BCCs) within individual habitat have been reported,...
我国科学家揭示超强梅雨形成的新机制
超强梅雨 厄尔尼诺 海洋-大气耦合模态 东亚夏季风
2021/7/28
2020年夏季我国经历了一次超强梅雨季，其形成机理的研究对于理解和预测我国超强梅雨具有重要意义。
Climate and Nutrient-Driven Regime Shifts of Cyanobacterial Communities in Low-Latitude Plateau Lakes
Climat Lakes Plateau cyanobacteria
2021/7/23
Cyanobacterial blooms that form in response to climate warming and nutrient enrichment in freshwater lakes have become a global environmental challenge.
Water level conditions are the key factors that affect the growth and distribution of wetland plants. Using Carex cinerascens(C. cinerascens) as the study species, we employ indoor simulations and fie...
Water quality degradation is one of the largest threats to freshwater ecosystems. Nutrient inputs, land use changes, and climate are expected to be the most important drivers of water quality degradat...
著名自然地理学家刘兴土院士逝世
自然地理学 刘兴土 逝世 湿地学科
2021/5/7
中国工程院院士，中国地理学会荣誉会士，中国地理科学成就奖获得者，中国科学院长春地理研究所原所长，中国科学院东北地理与农业生态研究所学术委员会名誉主任刘兴土，因病医治无效，于2021年5月6日在长春逝世，享年85岁。
Lake ecosystems, and the organisms that live within them, are vulnerable to temperature change(1-5), including the increased occurrence of thermal extremes(6).
Semi-arid areas of northern China are under increasing pressures from anthropogenic activities and climate change. Although wetland areas in these drylands have experienced dramatic, unidirectional sh...
