scholarly journals Dissolved Organic Carbon Production in Forest Soils

CSA News ◽  
2019 ◽  
Vol 64 (3) ◽  
pp. 9-9
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soils ◽  
Carbon Production

scholarly journals Modelling Dissolved Organic Carbon Production in Coniferous Forest Soils

2018 ◽  
Vol 82 (6) ◽  
pp. 1392-1403
Author(s):  
Göran I. Ågren ◽  
Dan B. Kleja ◽  
Ernesto Bosatta
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soils ◽  
Coniferous Forest ◽  
Carbon Production

scholarly journals Modeling dissolved organic carbon in temperate forest soils: TRIPLEX-DOC model development and validation

2014 ◽  
Vol 7 (3) ◽  
pp. 867-881 ◽  
Author(s):  
H. Wu ◽  
C. Peng ◽  
T. R. Moore ◽  
D. Hua ◽  
C. Li ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soils ◽  
Model Development ◽  
Terrestrial Ecosystems ◽  
Forest Harvesting ◽  
Biogeochemical Model ◽  
White Pine ◽  
C Cycling ◽  
Development And Validation

Abstract. Even though dissolved organic carbon (DOC) is the most active carbon (C) cycling in soil organic carbon (SOC) pools, it receives little attention from the global C budget. DOC fluxes are critical to aquatic ecosystem inputs and contribute to the C balance of terrestrial ecosystems, but few ecosystem models have attempted to integrate DOC dynamics into terrestrial C cycling. This study introduces a new process-based model, TRIPLEX-DOC, that is capable of estimating DOC dynamics in forest soils by incorporating both ecological drivers and biogeochemical processes. TRIPLEX-DOC was developed from Forest-DNDC, a biogeochemical model simulating C and nitrogen (N) dynamics, coupled with a new DOC process module that predicts metabolic transformations, sorption/desorption, and DOC leaching in forest soils. The model was validated against field observations of DOC concentrations and fluxes at white pine forest stands located in southern Ontario, Canada. The model was able to simulate seasonal dynamics of DOC concentrations and the magnitudes observed within different soil layers, as well as DOC leaching in the age sequence of these forests. Additionally, TRIPLEX-DOC estimated the effect of forest harvesting on DOC leaching, with a significant increase following harvesting, illustrating that land use change is of critical importance in regulating DOC leaching in temperate forests as an important source of C input to aquatic ecosystems.

scholarly journals Effect of carbon and nitrogen addition on nitrous oxide and carbon dioxide fluxes from thawing forest soils

2017 ◽  
Vol 31 (3) ◽  
pp. 339-349 ◽  
Author(s):  
Wu Haohao ◽  
Xu Xingkai ◽  
Duan Cuntao ◽  
Li TuanSheng ◽  
Cheng Weiguo
Keyword(s):  
Carbon Dioxide ◽  
Nitrous Oxide ◽  
Soil Moisture ◽  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soils ◽  
Mixed Forest ◽  
Soil Core ◽  
Total N ◽  
Nitrogen Inputs

AbstractPacked soil-core incubation experiments were done to study the effects of carbon (glucose, 6.4 g C m−2) and nitrogen (NH4Cl and KNO3, 4.5 g N m−2) addition on nitrous oxide (N2O) and carbon dioxide (CO2) fluxes during thawing of frozen soils under two forest stands (broadleaf and Korean pine mixed forest and white birch forest) with two moisture levels (55 and 80% water-filled pore space). With increasing soil moisture, the magnitude and longevity of the flush N2O flux from forest soils was enhanced during the early period of thawing, which was accompanied by great NO3−-N consumption. Without N addition, the glucose-induced cumulative CO2fluxes ranged from 9.61 to 13.49 g CO2-C m−2, which was larger than the dose of carbon added as glucose. The single addition of glucose increased microbial biomass carbon but slightly affected soil dissolved organic carbon pool. Thus, the extra carbon released upon addition of glucose can result from the decomposition of soil native organic carbon. The glucose-induced N2O and CO2fluxes were both significantly correlated to the glucose-induced total N and dissolved organic carbon pools and influenced singly and interactively by soil moisture and KNO3addition. The interactive effects of glucose and nitrogen inputs on N2O and CO2fluxes from forest soils after frost depended on N sources, soil moisture, and vegetation types.

Mineralization of dissolved organic carbon in mineral soil solution of two forest soils

2003 ◽  
Vol 166 (5) ◽  
pp. 585-593 ◽  
Author(s):  
David Schwesig ◽  
Karsten Kalbitz ◽  
Egbert Matzner
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Soil Solution ◽  
Forest Soils ◽  
Mineral Soil

Phytoplankton extracellular dissolved organic carbon production in a hypertrophic African Lake

Hydrobiologia ◽  
1989 ◽  
Vol 182 (2) ◽  
pp. 137-148 ◽  
Author(s):  
Richard D. Robarts ◽  
Lynne M. Sephton
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Carbon Production ◽  
African Lake

Dissolved organic carbon production and runoff quality following peatland extraction and restoration

2011 ◽  
Vol 37 (12) ◽  
pp. 1998-2008 ◽  
Author(s):  
M. Strack ◽  
K. Tóth ◽  
R. Bourbonniere ◽  
J.M. Waddington
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Carbon Production ◽  
Runoff Quality
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