Soil surface CO2 flux in a Minnesota peatland

1992 ◽  
Vol 18 (1) ◽  
pp. 37-51 ◽  
Author(s):  
Joon Kim ◽  
Shashi B. Verma
Keyword(s):  
Soil Surface ◽  
Co2 Flux ◽  
Soil Surface Co2 Flux

Effects of amendments of paper mill sludge and nutrients on soil surface CO2 flux in northern hardwood forests

2005 ◽  
Vol 16 (4) ◽  
pp. 265-269 ◽  
Author(s):  
Wang Chuan-kuan ◽  
Drew C. Feldkirchner ◽  
Stith T. Gower ◽  
Jim Ferris ◽  
Eric L. Kruger
Keyword(s):  
Soil Surface ◽  
Co2 Flux ◽  
Paper Mill ◽  
Hardwood Forests ◽  
Paper Mill Sludge ◽  
Northern Hardwood Forests ◽  
Northern Hardwood ◽  
Soil Surface Co2 Flux

scholarly journals Separating autotrophic and heterotrophic soil CO<sub>2</sub> effluxes in afforested peatlands

2021 ◽  
Author(s):  
Renée Hermans ◽  
Rebecca McKenzie ◽  
Roxane Andersen ◽  
Yit Arn Teh ◽  
Neil Cowie ◽  
...  
Keyword(s):  
Soil Surface ◽  
Co2 Flux ◽  
Co2 Efflux ◽  
Tree Roots ◽  
Peat Soils ◽  
Living Tree ◽  
Soil Surface Co2 Flux ◽  
Total Soil Respiration ◽  
Global Carbon ◽  
Soil Temperature And Moisture

Abstract. Peatlands are a significant global carbon (C) store, which can be compromised by drainage and afforestation. Quantifying the rate of C loss from peat soils under forestry is challenging, as soil CO2 efflux includes both CO2 produced from heterotrophic peat decomposition and CO2 produced by tree roots and associated fungal networks (autotrophic respiration). We experimentally terminated autotrophic belowground respiration in replicated forest plots by cutting through all living tree roots (trenching), and measured soil surface CO2 flux, litter input, litter decay rate and soil temperature and moisture over two years. Annual peat decomposition (heterotrophic CO2 flux) was 115 ± 16 g C m−2 y−1, representing c. 40 % of total soil respiration. Decomposition of needle litter is accelerated in the presence of an active rhizosphere, indicating a priming effects by labile C inputs from roots. This suggests that our estimates of peat mineralization in our trenched plots are conservative, and underestimate overall rates of peat C loss. Considering also input of litter from trees, our results indicate that the soils in these 30 year-old drained and afforested peatlands are a net sink for C, since substantially more C enters the soil as organic matter, than is decomposed heterotrophically. However, the C balance for these soils should be taken over the lifespan of the trees, in order to determine if the soils under these drained and afforested peatlands are a sustained sink of C, or become a net source over longer periods of forestry.

Seasonal patterns in soil surface CO2 flux under snow cover in 50 and 300 year old subalpine forests

2005 ◽  
Vol 73 (1) ◽  
pp. 93-107 ◽  
Author(s):  
Robert M. Hubbard ◽  
Michael G. Ryan ◽  
Kelly Elder ◽  
Charles C. Rhoades
Keyword(s):  
Snow Cover ◽  
Soil Surface ◽  
Co2 Flux ◽  
Seasonal Patterns ◽  
Subalpine Forests ◽  
Soil Surface Co2 Flux

scholarly journals Daily soil surface CO2 flux during non-flooded periods in flood-irrigated rice rotations

2014 ◽  
Vol 35 (2) ◽  
pp. 771-782 ◽  
Author(s):  
Jill M. Motschenbacher ◽  
Kristofor R. Brye ◽  
Merle M. Anders ◽  
Edward E. Gbur ◽  
Nathan A. Slaton ◽  
...  
Keyword(s):  
Soil Surface ◽  
Co2 Flux ◽  
Irrigated Rice ◽  
Soil Surface Co2 Flux
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