Results 61 to 70 of about 1,534 (211)
Extraction Kinetics and Molecular Size Fractionation of Humic Substances From Two Brazilian Soils
Journal of the Brazilian Chemical Society, 1999 In the present study, the extraction behaviour of humic substances (HS) from an Oxisol and a Mollisol from South Brazil, by using 0.1 and 0.5 mol L-1 NaOH and 0.15 mol L-1 neutral pyrophosphate solutions, respectively, was systematically studied.
Dick Deborah Pinheiro, Burba Peter
doaj
Impact of Long-Term Organic Fertilizer Application on Lignin in Mollisol
, 2010 Fertilization is one of the essential managements to maintain and increase soil organic carbon (SOC) level in agroecosystems. It has been realized that fertilizer applications influenced the turnover of labile and refractory organic carbon pools in ...
Xu Dong Zhang +4 more
core +1 more source
Cropping system and nitrogen fertilization modulate soil enzyme kinetics
Soil Science Society of America Journal, Volume 90, Issue 5, September/October 2026.Abstract The decomposition of soil organic matter and nutrient cycling are largely mediated by extracellular enzymes, yet the effect of soil management on enzyme kinetic (Michaelis constant [Km] and maximum velocity [Vmax]) remains poorly understood.
A. A. Khaleel +2 more
wiley +1 more source
, 2016 Understanding the decomposition processes of crop residues and the quantity of residue carbon (C) incorporated into soil organic C (SOC) pools in the soil is crucial for optimizing C management in agricultural systems.
金剑 +1 more
core +1 more source
Land Degradation &Development, Volume 37, Issue 14, Page 10355-10370, 30 August 2026.ABSTRACT Although numerous prediction methods have been developed, scientific estimation of the spatiotemporal pattern of soil erosion at the watershed scale remains challenging. In this study, fallout radionuclides of 210Pbex and 137Cs were used to estimate average annual soil erosion and deposition in a Mollisol watershed in Northeast China ...
Shaoliang Zhang +7 more
wiley +1 more source
N2O emissions from a cultivated mollisol: optimal time of day for sampling and the role of soil temperature [PDF]
, 2012 The correct use of closed field chambers to determine N2O emissions requires defining the time of day that best represents the daily mean N2O flux. A short-term field experiment was carried out on a Mollisol soil, on which annual crops were grown under ...
Figueiro Aureggi,Santiago Andrés +11 more
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Decadal effects of fuel treatments and annual grass invasion on sagebrush ecosystem carbon stocks
Ecosphere, Volume 17, Issue 8, August 2026.Abstract Fuel treatments are implemented across large spatial scales in sagebrush (Artemisia spp.) ecosystems of the US Intermountain West to limit wildfire risk and spread, but treatment effects on ecosystem carbon storage remain poorly understood. Fuel treatments can reduce aboveground carbon storage and may also influence belowground carbon storage ...
Seren H. Bagcilar +7 more
wiley +1 more source
Journal of the Brazilian Chemical Society, 1999 In a previous study it was observed that humic substances (HS) extracted with NaOH solution and with Na4P2O7 solution presented different molecular weights, and also that the extracted HS yield by each method varied between an Oxisol and a Mollisol from ...
Dick Deborah Pinheiro +2 more
doaj
Soil Science Society of America Journal, Volume 90, Issue 4, July/August 2026.Abstract Measured activities of soil enzymes such as phosphomonoesterase (PHO) can be affected by when and where soils are sampled, and how soils are stored prior to analysis. While these factors have been evaluated individually, simultaneous assessment is needed to determine the relative importance of sampling decisions and sample storage for measured
Yuhei Nakayama +4 more
wiley +1 more source
, 2009 Entre 1992 et 2007, le climat de la localité côtière de Salluit, situé à l'extrême nord du Québec, s'est réchauffé considérablement. Ces conditions climatiques particulières ont augmenté l'instabilité du mollisol au dégel et ont favorisé les ruptures de ...
L'Hérault, Emmanuel
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