Articles with "som" as a keyword



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Retention of Nitrate-N in Mineral Soil Organic Matter in Different Forest Age Classes

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Published in 2019 at "Ecosystems"

DOI: 10.1007/s10021-018-0328-z

Abstract: Conceptual models of nutrient retention in ecosystems suggest that mature forests receiving chronically elevated atmospheric nitrogen (N) deposition should experience increased nitrate (NO3−) losses to streams. However, at the Hubbard Brook Experimental Forest (New Hampshire,… read more here.

Keywords: soil organic; som; organic matter; mineral soil ... See more keywords
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Forest fires in Canadian permafrost region: the combined effects of fire and permafrost dynamics on soil organic matter quality

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Published in 2019 at "Biogeochemistry"

DOI: 10.1007/s10533-019-00560-x

Abstract: Wildfires burn approximately 1% of boreal forest yearly, being one of the most significant factors affecting soil organic matter (SOM) pools. Boreal forests are largely situated in the permafrost zone, which contains half of global… read more here.

Keywords: soil organic; quality; permafrost; som ... See more keywords
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Groundwater quality modeling using self-organizing map (SOM) and geographic information system (GIS) on the Caspian southern coasts

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Published in 2020 at "Journal of Mountain Science"

DOI: 10.1007/s11629-019-5483-y

Abstract: Groundwater is the main source for water provision in the arid and semi-arid areas such as Iran. The groundwater quality was simulated by using a hybrid model integrating a Self-Organizing Map (SOM) and geographic information… read more here.

Keywords: quality; gis; groundwater quality; som ... See more keywords
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Design exploration of quantitative performance and geometry typology for indoor arena based on self-organizing map and multi-layered perceptron neural network

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Published in 2020 at "Automation in Construction"

DOI: 10.1016/j.autcon.2020.103163

Abstract: Abstract During the early design process, simulations allow numeric assessment and 3D models allow visual inspection for qualitative criteria. However, exploring different design alternatives based on both is challenging. To support the design exploration of… read more here.

Keywords: network; som; geometry; self organizing ... See more keywords
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Combination of fractional order derivative and memory-based learning algorithm to improve the estimation accuracy of soil organic matter by visible and near-infrared spectroscopy

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Published in 2019 at "CATENA"

DOI: 10.1016/j.catena.2018.10.051

Abstract: Abstract Visible and near-infrared (Vis–NIR) spectroscopy is used to estimate soil organic matter (SOM). Spectral preprocessing techniques and multivariate modeling methods play important roles in the quantitative analysis of SOM. First and second derivatives (i.e.,… read more here.

Keywords: order; spectroscopy; som; reflectance ... See more keywords
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Efficiently dedicated oxidation of long-chain crude oil in the soil by inactive SOM-Fe

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Published in 2019 at "Chemical Engineering Journal"

DOI: 10.1016/j.cej.2019.121913

Abstract: Abstract To find out the mechanism of efficiently dedicated oxidation of long-chain crude oil in the Fenton system with inactive SOM-Fe, two crude oil-contaminated soils with different concentrations (S1: 14579 mg/kg; S2: 15491 mg/kg) were used as… read more here.

Keywords: inactive som; som; chain crude; crude oil ... See more keywords
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Hierarchical Bayesian models for predicting soil salinity and sodicity characteristics in a coastal reclamation region

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Published in 2017 at "Ecological Engineering"

DOI: 10.1016/j.ecoleng.2017.04.006

Abstract: Knowledge of soil saline-alkaline distributions and salt migration mechanism is important when developing strategies that reduce soil salinity, improve soil fertility, and enhance soil management in coastal reclamation regions. Soil saline-alkaline characteristics are indicated by… read more here.

Keywords: soil; soil salinity; coastal reclamation; som ... See more keywords
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A sequential selective dissolution method to quantify storage and stability of organic carbon associated with Al and Fe hydroxide phases

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Published in 2018 at "Geoderma"

DOI: 10.1016/j.geoderma.2017.09.043

Abstract: Stabilization of SOM (soil organic matter) is regulated in part by sorption and desorption reactions happening at mineral surfaces, as well as precipitation and dissolution of organo-metal complexes. Fe and Al hydroxides play a particularly… read more here.

Keywords: carbon; sequential selective; som; organo metal ... See more keywords
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Tree species affect soil organic matter stocks and stoichiometry in interaction with soil microbiota

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Published in 2019 at "Geoderma"

DOI: 10.1016/j.geoderma.2019.06.021

Abstract: Abstract The purpose of this research was to evaluate tree species effects on quantitative and qualitative soil organic matter (SOM) properties of forest floors and mineral soil layers. Additionally, the contribution of soil microbial biomass… read more here.

Keywords: organic matter; soil; som; soil organic ... See more keywords
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Microstructural and biochemical diversity of forest soil organic surface layers revealed by density fractionation

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Published in 2020 at "Geoderma"

DOI: 10.1016/j.geoderma.2020.114262

Abstract: Abstract Particularly on sites with shallow, nutrient-poor soils, forest soil organic surface layers (O layers) are important for the storage of plant-available nutrients and water, and thus for forest vitality and productivity. O layers can… read more here.

Keywords: soil organic; organic surface; som; density ... See more keywords
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Temperature sensitivity of decomposition: Discrepancy between field and laboratory estimates is not due to sieving the soil

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Published in 2020 at "Geoderma"

DOI: 10.1016/j.geoderma.2020.114444

Abstract: Abstract Is persistent soil organic matter (SOM), characterised by an old age and long-turnover time, more or less sensitive to changes in temperature than fast-cycling, recent SOM? Largely due to our limited understanding of the… read more here.

Keywords: field; temperature sensitivity; som; sieving soil ... See more keywords