Atmospheric deposition of reactive nitrogen to a deciduous forest in the southern Appalachian Mountains [0.03%]
南方阿巴拉契亚山脉常绿阔叶林区域反应性氮的干湿沉降flux观测研究
John T Walker,Xi Chen,Zhiyong Wu et al.
John T Walker et al.
Assessing nutrient critical load exceedances requires complete and accurate atmospheric deposition budgets for reactive nitrogen (Nr). The exceedance is the total amount of Nr deposited to the ecosystem in excess of the critical load, which...
Lichen species across Alaska produce highly active and stable ice nucleators [0.03%]
整个阿拉斯加的地衣物种产生高效且稳定的冰核菌素
Rosemary J Eufemio,Ingrid de Almeida Ribeiro,Todd L Sformo et al.
Rosemary J Eufemio et al.
Forty years ago, lichens were identified as extraordinary biological ice nucleators (INs) that enable ice formation at temperatures close to 0°C. By employing INs, lichens thrive in freezing environments that surpass the physiological limi...
Intercomparison of methods to estimate gross primary production based on CO2 and COS flux measurements [0.03%]
基于CO2和COS通量测量估算生态系统总初级生产力的方法比较研究
Kukka-Maaria Kohonen,Roderick Dewar,Gianluca Tramontana et al.
Kukka-Maaria Kohonen et al.
Separating the components of ecosystem-scale carbon exchange is crucial in order to develop better models and future predictions of the terrestrial carbon cycle. However, there are several uncertainties and unknowns related to current photo...
Biogenic volatile organic compound ambient mixing ratios and emission rates in the Alaskan Arctic tundra [0.03%]
阿拉斯加北极苔原生物挥发性有机化合物的混合比率及排放速率
Hélène Angot,Katelyn McErlean,Lu Hu et al.
Hélène Angot et al.
Rapid Arctic warming, a lengthening growing season, and the increasing abundance of biogenic volatile-organic-compound-emitting shrubs are all anticipated to increase atmospheric biogenic volatile organic compounds (BVOCs) in the Arctic atm...
Temporal trends in methane emissions from a small eutrophic reservoir: the key role of a spring burst [0.03%]
小型富营养水库甲烷排放的时间变化趋势：春季爆发的关键作用
Sarah Waldo,Jake J Beaulieu,William Barnett et al.
Sarah Waldo et al.
Waters impounded behind dams (i.e., reservoirs) are important sources of greenhouses gases (GHGs), especially methane (CH4), but emission estimates are not well constrained due to high spatial and temporal variability, limitations in monito...
Vertical transport of sediment-associated metals and cyanobacteria by ebullition in a stratified lake [0.03%]
分层湖泊中通过气泡上涌传输与沉积物相关的金属和蓝藻菌垂直传输研究
Kyle Delwiche,Junyao Gu,Harold Hemond et al.
Kyle Delwiche et al.
Bubbles adsorb and transport particulate matter both in industrial and marine systems. While methane-containing bubbles emitted from anoxic sediments are found extensively in aquatic ecosystems, relatively little attention has been paid to ...
Spaceborne potential for examining taiga-tundra ecotone form and vulnerability [0.03%]
用于考察泰加林-冻原生态过渡带形态和脆弱性的星载潜力
Paul M Montesano,Guoqing Sun,Ralph O Dubayah et al.
Paul M Montesano et al.
In the taiga-tundra ecotone (TTE), site-dependent forest structure characteristics can influence the subtle and heterogeneous structural changes that occur across the broad circumpolar extent. Such changes may be related to ecotone form, de...
A multi-method autonomous assessment of primary productivity and export efficiency in the springtime North Atlantic [0.03%]
基于春季北大西洋的多方法自主评估初级生产力和输出效率
Nathan Briggs,Kristinn Guðmundsson,Ivona Cetinić et al.
Nathan Briggs et al.
Fixation of organic carbon by phytoplankton is the foundation of nearly all open-ocean ecosystems and a critical part of the global carbon cycle. But quantification and validation of ocean primary productivity at large scale remains a major...
Influence of infrastructure on water quality and greenhouse gas dynamics in urban streams [0.03%]
基础设施对城市河流水质和温室气体动态的影响
Rose M Smith,Sujay S Kaushal,Jake J Beaulieu et al.
Rose M Smith et al.
Streams and rivers are significant sources of nitrous oxide (N2O), carbon dioxide (CO2), and methane (CH4) globally, and watershed management can alter greenhouse gas (GHG) emissions from streams. We hypothesized that urban infrastructure s...
Global atmospheric CO2 inverse models converging on neutral tropical land exchange, but disagreeing on fossil fuel and atmospheric growth rate [0.03%]
全球大气二氧化碳反演模型在中立的热带陆地交换方面达成一致，但在化石燃料和大气增长速率方面存在分歧
Benjamin Gaubert,Britton B Stephens,Sourish Basu et al.
Benjamin Gaubert et al.
We have compared a suite of recent global CO2 atmospheric inversion results to independent airborne observations and to each other, to assess their dependence on differences in northern extratropical (NET) vertical transport and to identify...