The effect of soil aggregate size on pore structure and its consequence on emission of greenhouse gases

2013 ◽  
Vol 132 ◽  
pp. 39-46 ◽  
Author(s):  
S. Mangalassery ◽  
S. Sjögersten ◽  
D.L. Sparkes ◽  
C.J. Sturrock ◽  
S.J. Mooney
Keyword(s):  
Greenhouse Gases ◽  
Pore Structure ◽  
Aggregate Size ◽  
Soil Aggregate ◽  
Emission Of Greenhouse Gases

Global Warming and Its Multiple Causes

2020 ◽  
Vol 3 (2) ◽  
Author(s):  
Romdhane Ben Slama
Keyword(s):  
Global Warming ◽  
Greenhouse Gases ◽  
Greenhouse Effect ◽  
Infrared Radiation ◽  
Fossil Fuels ◽  
Ambient Air ◽  
The Earth ◽  
The One ◽  
Heat Released ◽  
Emission Of Greenhouse Gases

The global warming which preoccupies humanity, is still considered to be linked to a single cause which is the emission of greenhouse gases, CO2 in particular. In this article, we try to show that, on the one hand, the greenhouse effect (the radiative imprisonment to use the scientific term) took place in conjunction with the infrared radiation emitted by the earth. The surplus of CO2 due to the combustion of fossil fuels, but also the surplus of infrared emissions from artificialized soils contribute together or each separately,  to the imbalance of the natural greenhouse effect and the trend of global warming. In addition, another actor acting directly and instantaneously on the warming of the ambient air is the heat released by fossil fuels estimated at 17415.1010 kWh / year inducing a rise in temperature of 0.122 ° C, or 12.2 ° C / century.

Soil aggregate size-dependent relationships between microbial functional diversity and multifunctionality

2021 ◽  
Vol 154 ◽  
pp. 108143
Author(s):  
Shun Han ◽  
Manuel Delgado-Baquerizo ◽  
Xuesong Luo ◽  
Yurong Liu ◽  
Joy D. Van Nostrand ◽  
...  
Keyword(s):  
Functional Diversity ◽  
Aggregate Size ◽  
Soil Aggregate ◽  
Microbial Functional Diversity ◽  
Size Dependent

Aging shapes the distribution of copper in soil aggregate size fractions

2018 ◽  
Vol 233 ◽  
pp. 569-576 ◽  
Author(s):  
Qi Li ◽  
Huihui Du ◽  
Wenli Chen ◽  
Jialong Hao ◽  
Qiaoyun Huang ◽  
...  
Keyword(s):  
Aggregate Size ◽  
Soil Aggregate ◽  
Size Fractions

scholarly journals Stimulation of r- vs. K-selected microorganisms by elevated atmospheric CO2 depends on soil aggregate size

2009 ◽  
Vol 69 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Maxim Dorodnikov ◽  
Evgenia Blagodatskaya ◽  
Sergey Blagodatsky ◽  
Andreas Fangmeier ◽  
Yakov Kuzyakov
Keyword(s):  
Aggregate Size ◽  
Soil Aggregate ◽  
Atmospheric Co2 ◽  
Elevated Atmospheric Co2 ◽  
Stimulation Of

Aggregate size distribution and stability of an oxisol under legume-based and pure grass pastures in the eastern Colombian savannas

Soil Research ◽  
1995 ◽  
Vol 33 (1) ◽  
pp. 153 ◽  
Author(s):  
AJ Gijsman ◽  
RJ Thomas
Keyword(s):  
Size Distribution ◽  
Soil Aggregates ◽  
Aggregate Stability ◽  
Aggregate Size ◽  
Soil Aggregate ◽  
Hot Water ◽  
Aggregate Size Distribution ◽  
Carbohydrate Concentration ◽  
Stability Measurement ◽  
Water Extractable

This study evaluated soil aggregate size distribution and stability of an Oxisol under improved grass-only or grass-legume pastures, established in previously native savanna. Three grass-legume combinations were included at various stocking rates. In all treatments and soil layers, soils were well aggregated, having more than 90% of their weight in macroaggregates (>250 �m). The addition of legumes to pastures did not affect the soil aggregate size distribution, although aggregates showed somewhat more stability against slaking. An increase in stocking rate negatively affected both average aggregate size and aggregate stability. Aggregates showed little or no dispersion of clay particles in any treatment. A positive correlation was found between wet aggregate stability and hot-water extractable carbohydrate concentration, supporting the hypothesis that these carbohydrates equate with plant-derived or microbial polysaccharides which glue soil aggregates together. It is suggested that determination of hot-water extractable carbohydrates may serve as a useful indicator of small differences in aggregate stability, even when these differences are not evident in the stability measurement itself.

Nuclear, Solar and Desalination Working Together Symbiotically

2016 ◽  
Author(s):  
Hamad Alwashmi ◽  
Jay F. Kunze
Keyword(s):  
Drinking Water ◽  
Greenhouse Gases ◽  
Nuclear Power ◽  
Fossil Fuels ◽  
Energy Systems ◽  
Capital Costs ◽  
The World ◽  
Working Together ◽  
Fuel Costs ◽  
Emission Of Greenhouse Gases

In many parts of the world, drinking water is not available except through desalination. Most of these areas have an abundance of solar energy, with few cloudy periods. Energy is required for desalination and for producing electricity. Traditionally this energy has been supplied by fossil fuels. However, even in those parts of the world that have abundant fossil fuels, using them for these purposes is being discouraged for two reasons: 1) the emission of greenhouse gases from combustion of fossil fuels, and 2) the higher value of fossil fuels when used for transportation. Nuclear power and solar power are both proposed as replacements for fossil fuels in these locations. Both of these energy systems have high capital costs, and negligible fuel costs (zero for solar) Instead of these two primary forms of energy competing, this paper shows how they can compliment each other, especially where a significant part of the electricity demand is used for desalination.

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