The role of mineral soil topography on the spatial distribution of organic layer thickness in a paludified boreal landscape

Geoderma ◽  
2014 ◽  
Vol 221-222 ◽  
pp. 70-81 ◽  
Author(s):  
Ahmed Laamrani ◽  
Osvaldo Valeria ◽  
Nicole Fenton ◽  
Yves Bergeron ◽  
Li Zhen Cheng
Keyword(s):  
Spatial Distribution ◽  
Layer Thickness ◽  
Mineral Soil ◽  
Organic Layer ◽  
Boreal Landscape

Effects of forest floor organic layer and root biomass on soil respiration following boreal forest fire

2008 ◽  
Vol 38 (4) ◽  
pp. 647-655 ◽  
Author(s):  
S. Singh ◽  
B. D. Amiro ◽  
S. A. Quideau
Keyword(s):  
Soil Respiration ◽  
Boreal Forest ◽  
Layer Thickness ◽  
Forest Floor ◽  
Root Biomass ◽  
Mineral Soil ◽  
Spatial And Temporal Variation ◽  
Organic Layer ◽  
Grid Pattern ◽  
Significant Difference

Soil respiration and its spatial and temporal variation were studied at three boreal forest sites in central Saskatchewan, Canada, burned in 1998, 1989, and 1977. Soil respiration, soil temperature, and organic layer thickness were measured at 100 points in a grid pattern of 2 m × 2 m at each site in 2004 and 2005. The mean within-site spatial coefficient of variation was 35%, and the measurements were not spatially autocorrelated. We found no significant difference in variance between the two youngest sites (P > 0.05), whereas the older site showed significantly lower variance (P < 0.05). Soil respiration was not correlated with the forest floor organic layer thickness at any of the sites (R2 < 0.1). Removal of the forest floor layer reduced the soil respiration by 17% to 38%, depending on the site. Thus, the respiration from the mineral soil seemed to contribute a major fraction of the total soil respiration (62%–83%). Soil respiration was positively linearly related to the fine root biomass (R2 = 0.63–0.85, P < 0.05) at all sites. We conclude that variation in root biomass has a larger effect than differential forest floor organic layers on variation in soil respiration in young boreal postfire forests.

The role of gas flow distributions on CO2 mineralization within monolithic cemented composites: coupled CFD-factorial design approach

2021 ◽  
Author(s):  
Iman Mehdipour ◽  
Gabriel Falzone ◽  
Dale Prentice ◽  
Narayanan Neithalath ◽  
Dante Simonetti ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Factorial Design ◽  
Material Properties ◽  
Gas Flow ◽  
Design Approach ◽  
Processing Conditions ◽  
Gas Processing ◽  
Co2 Mineralization

Optimizing the spatial distribution of contacting gas and the gas processing conditions enhances CO2 mineralization reactions and material properties of carbonate-cementitious monoliths.

scholarly journals The Role of Spatio-Temporal Information to Govern the COVID-19 Pandemic: A European Perspective

2021 ◽  
Vol 10 (3) ◽  
pp. 166
Author(s):  
Hartmut Müller ◽  
Marije Louwsma
Keyword(s):  
European Union ◽  
Spatial Distribution ◽  
Spatial Information ◽  
National Level ◽  
Temporal Information ◽  
The European Union ◽  
Member States ◽  
Heavy Burden ◽  
Spatio Temporal

The Covid-19 pandemic put a heavy burden on member states in the European Union. To govern the pandemic, having access to reliable geo-information is key for monitoring the spatial distribution of the outbreak over time. This study aims to analyze the role of spatio-temporal information in governing the pandemic in the European Union and its member states. The European Nomenclature of Territorial Units for Statistics (NUTS) system and selected national dashboards from member states were assessed to analyze which spatio-temporal information was used, how the information was visualized and whether this changed over the course of the pandemic. Initially, member states focused on their own jurisdiction by creating national dashboards to monitor the pandemic. Information between member states was not aligned. Producing reliable data and timeliness reporting was problematic, just like selecting indictors to monitor the spatial distribution and intensity of the outbreak. Over the course of the pandemic, with more knowledge about the virus and its characteristics, interventions of member states to govern the outbreak were better aligned at the European level. However, further integration and alignment of public health data, statistical data and spatio-temporal data could provide even better information for governments and actors involved in managing the outbreak, both at national and supra-national level. The Infrastructure for Spatial Information in Europe (INSPIRE) initiative and the NUTS system provide a framework to guide future integration and extension of existing systems.

The role of the shell in core–shell-structured La-doped NaTaO3 photocatalysts

2021 ◽  
Vol 23 (14) ◽  
pp. 8868-8879
Author(s):  
Hanggara Sudrajat ◽  
Mitsunori Kitta ◽  
Ryota Ito ◽  
Tomoko Yoshida ◽  
Ryuzi Katoh ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Water Splitting ◽  
Core Shell ◽  
Surface Features ◽  
Relationship Of ◽  
La Doped

Unraveling the nanoarchitecture–photoactivity relationship of core–shell-structured La-doped NaTaO3 to tune the surface features, spatial distribution of dopants, and hence water splitting activity.

The role of powder layer thickness on the quality of SLM printed parts

2018 ◽  
Vol 18 (3) ◽  
pp. 948-955 ◽  
Author(s):  
Q.B. Nguyen ◽  
D.N. Luu ◽  
S.M.L. Nai ◽  
Z. Zhu ◽  
Z. Chen ◽  
...  
Keyword(s):  
Layer Thickness ◽  
Powder Layer
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