Effects of Redox Conditions and Flow Processes on the Mobility of Dissolved Organic Carbon and Nitrogen in a Forest Soil

2000 ◽  
Vol 29 (1) ◽  
pp. 288-297 ◽  
Author(s):  
F. Hagedorn ◽  
K. Kaiser ◽  
H. Feyen ◽  
P. Schleppi
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soil ◽  
Redox Conditions ◽  
Carbon And Nitrogen ◽  
Flow Processes

Dissolved organic carbon and nitrogen in the Western Black Sea

2007 ◽  
Vol 105 (1-2) ◽  
pp. 140-150 ◽  
Author(s):  
Hugh W. Ducklow ◽  
Dennis A. Hansell ◽  
Jessica A. Morgan
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Black Sea ◽  
Carbon And Nitrogen

scholarly journals Carbon losses from pyrolysed and original wood in a forest soil under natural and increased N deposition

2014 ◽  
Vol 11 (18) ◽  
pp. 5199-5213 ◽  
Author(s):  
B. Maestrini ◽  
S. Abiven ◽  
N. Singh ◽  
J. Bird ◽  
M. S. Torn ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soil ◽  
N Deposition ◽  
Main Process ◽  
N Availability ◽  
N Losses ◽  
Mineral N ◽  
C Cycling ◽  
Carbon Losses

Abstract. Pyrogenic organic matter (PyOM) plays an important role as a stable carbon (C) sink in the soils of terrestrial ecosystems. However, uncertainties remain about in situ turnover rates of fire-derived PyOM in soil, the main processes leading to PyOM-C and nitrogen (N) losses from the soil, and the role of N availability on PyOM cycling in soils. We measured PyOM and native soil organic carbon losses from the soil as carbon dioxide and dissolved organic carbon (DOC) using additions of highly 13C-labelled PyOM (2.03 atom %) and its precursor pinewood during 1 year in a temperate forest soil. The field experiment was carried out under ambient and increased mineral N deposition (+60 kg N-NH4NO3 ha−1 year−1). The results showed that after 1 year: (1) 0.5% of PyOM-C and 22% of wood-C were mineralized as CO2, leading to an estimated turnover time of 191 and 4 years, respectively; (2) the quantity of PyOM and wood lost as dissolved organic carbon was negligible (0.0004 ± 0.0003% and 0.022 ± 0.007% of applied-C, respectively); and (3) N additions decreased cumulative PyOM mineralization by 43%, but did not affect cumulative wood mineralization and did not affect the loss of DOC from PyOM or wood. We conclude that mineralization to CO2 was the main process leading to PyOM losses during the first year of mineralization in a forest soil, and that N addition can decrease PyOM-C cycling, while added N showed no effect on wood C cycling.

Modelling multiseasonal preferential transport of dissolved organic carbon in a shallow forest soil: Equilibrium versus kinetic sorption

2019 ◽  
Vol 33 (22) ◽  
pp. 2898-2917 ◽  
Author(s):  
Jaromir Dusek ◽  
Michal Dohnal ◽  
Tomas Vogel ◽  
Anne Marx ◽  
Johannes A.C. Barth
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Forest Soil ◽  
Preferential Transport ◽  
Kinetic Sorption
Sign in / Sign up

Export Citation Format

Share Document