Download the full-sized PDF of Soil respiration in four different land-use systems in north central Alberta, CanadaDownload the full-sized PDF



Permanent link (DOI):


Export to: EndNote  |  Zotero  |  Mendeley


This file is in the following communities:

Renewable Resources, Department of


This file is in the following collections:

Journal Articles (Renewable Resources)

Soil respiration in four different land-use systems in north central Alberta, Canada Open Access


Author or creator
Arevalo, C. B. M.
Bhatti, J. S.
Chang, S. X.
Jassal, R. S.
Sidders, D.
Additional contributors
Carbon sequestration
Forest soil
Deciduous forest
Heterotrophic respiration
Hybrid poplar plantations
CO2 efflux
Root respiration
Type of item
Journal Article (Published)
Abstract: This study compares soil respiration and its heterotrophic and autotrophic components in four land use types: agriculture, 2 and 9 year old hybrid poplar plantations, grassland, and a native aspen stand in north central Alberta, Canada, over a period of two growing seasons (2006 and 2007). The differences were examined with respect to substrate quality and quantity, fine root biomass, and nutrient availability, in addition to soil temperature and soil water content. Cumulative soil C loss via soil respiration averaged over the two growing seasons was (in decreasing order) 781, 551, 523, 502, and 428 g C m(-2) for native aspen stand, 9 year old hybrid poplar plantation, grassland, agriculture and 2 year old hybrid poplar plantation, respectively. We found that similar to 75% of soil respiration in the native aspen stand originated from the top 7.5-10 cm litter-fibric-humus layer. Seasonal heterotrophic and autotrophic respiration among the land uses ranged from 97 to 272 and 333 to 560 g C m(-2), respectively, contributing up to 35% and 83% of total soil respiration, respectively. The variability in soil respiration across different land uses was explained mainly by site differences in soil temperature (88-94%). Soil respiration followed a pronounced seasonal trend: increasing during the growing season and converging to a minimum in the fall. Soil respiration under different land uses was influenced by (1) ecosystem C stock, (2) temperature sensitivity (Q(10)) of organic matter present, and (3) organic matter decomposability as indicated by the natural abundance of delta(13)C. Heterotrophic respiration was influenced by soil temperature, while autotrophic respiration was influenced by fine root biomass and nutrient (NO(3)(-) and P) availability. These results are useful in estimating potential responses of soil respiration and its components to future land management and climate change.
Date created
License information
© 2010 American Geophysical Union. This version of this article is open access and can be downloaded and shared. The original author(s) and source must be cited.
Citation for previous publication
Arevalo, C.B.M., Bhatti, J.S., Chang, S.X., Jassal, R.S. and Sidders, D. (2010). Soil respiration in four different land-use systems in north central Alberta, Canada. Journal of Geophysical Research - Biogeosciences, 115, G01003, 1-12. doi:10.1029/2009JG001006.
Link to related item

File Details

Date Uploaded
Date Modified
Audit Status
Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 1089766
Last modified: 2015:10:12 20:45:48-06:00
Filename: JGR_115_2010_G01003.pdf
Original checksum: d044132119340607df484b37b9169b02
Well formed: true
Valid: true
File title: Soil respiration in four different land use systems in north central Alberta, Canada
File author: Carmela B. M. Arevalo, Jagtar S. Bhatti, Scott X. Chang, Rachhpal S. Jassal, Derek Sidders
Page count: 12
Activity of users you follow
User Activity Date