@inbook{noormets_ewers_sun_mackay_zheng_mcnulty_chen_2006, title={Water and carbon cycles in heterogeneous landscapes: an ecosystem perspective}, ISBN={1600210473}, booktitle={Ecology of Hierarchical Landscapes: From Theory to Application}, publisher={Carbondale, IL: Nova Publishing}, author={Noormets, A. and Ewers, B. and Sun, G. and Mackay, S. and Zheng, D. and McNulty, S. and Chen, J.}, editor={J. Chen, S. C. Saunders and K. D. Brosofske and Crow, T. R.Editors}, year={2006}, pages={89–123} }
 @article{zheng_chen_noormets_euskirchen_le moine_2005, title={Effects of climate and land use on landscape soil respiration in northern Wisconsin, USA: 1972 to 2001}, volume={28}, ISSN={["1616-1572"]}, DOI={10.3354/cr028163}, abstractNote={CR Climate Research Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsSpecials CR 28:163-173 (2005) - doi:10.3354/cr028163 Effects of climate and land use on landscape soil respiration in northern Wisconsin, USA: 1972 to 2001 Daolan Zheng1,*, Jiquan Chen1, Asko Noormets1, Eugénie S. Euskirchen2, James Le Moine1 1Department of Earth, Ecological, and Environmental Sciences, The University of Toledo, Toledo, Ohio 43606, USA2Institute of Arctic Biology, University of Alaska Fairbanks, Fairbanks, Alaska 99775, USA *Email: dzheng@utnet.utoledo.edu ABSTRACT: Changes in climate and land use affect soil respiration rates (SRR) significantly, but studies of these effects across entire landscapes are rare. We simulated responses of landscape mean SRR (LMSRR) to such changes from May to October over a 30 yr period in a managed, predominantly forested landscape in northern Wisconsin, USA, using: (1) 6 satellite-derived land-cover maps (1972, 1978, 1982, 1987, 1992, and 2001); (2) monthly air temperature data in the corresponding years of the cover maps; and (3) SRR models driven by soil temperature (Ts) at 5 cm depth. LMSRR seemed to increase linearly by 77% from 0.625 in May to 1.104 g CO2 m–2 h–1 in July, and then decreased at an increasing rate to 0.411 g CO2 m–2 h–1 in October. LMSRR was more sensitive to an increase of minimum temperature than that of mean or maximum temperature, suggesting that future climate change might impact SRR in high-latitude forests more than other biomes. LMSRR in September over the study period was similar to that of June but with 92% higher variation, while both landscape mean air temperature and precipitation in September had lower variation than in June. This indicates that the topsoil layer functions differently during soil warming and cooling phases. Changes in land cover composition from 1972 to 2001 increased LMSRR by 2.8 to 3.1% while 2°C differences in growing season mean air temperature increased the SRR by 6.7 to 7.0%. The combined effects of both variables on the SRR are more complex, varying from 3.8 to 10.0%. KEY WORDS:Landscape-scale soil respiration · Temperature variation · Landscape composition · Empirical model · Carbon flux Full article in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in CR Vol. 28, No. 2. Online publication date: March 16, 2005 Print ISSN: 0936-577X; Online ISSN: 1616-1572 Copyright © 2005 Inter-Research.}, number={2}, journal={CLIMATE RESEARCH}, author={Zheng, DL and Chen, JQ and Noormets, A and Euskirchen, ES and Le Moine, J}, year={2005}, month={Mar}, pages={163–173} }
 @article{chen_brosofske_noormets_crow_bresee_le moine_euskirchen_mather_zheng_2004, title={A working framework for quantifying carbon sequestration in disturbed land mosaics}, volume={33}, ISSN={["0364-152X"]}, DOI={10.1007/s00267-003-9131-4}, journal={ENVIRONMENTAL MANAGEMENT}, author={Chen, Jiquan and Brosofske, Kimberley D. and Noormets, Asko and Crow, Thomas R. and Bresee, Mary K. and Le Moine, James M. and Euskirchen, Eugenie S. and Mather, Steve V. and Zheng, Daolan}, year={2004}, month={Jul}, pages={S210–S221} }