Publications

Publications Found: 1437

Contrasting Responses To Drought Of Forest Floor CO2 Efflux In A Loblolly Pine Plantation And A Nearby Oak-Hickory Forest
Palmroth, S., Maier, C. A., McCarthy, H. R., Oishi, A. C., Kim, H., Johnsen, K., Katul, G. G., Oren, R.

Forest floor CO2 efflux (Fff) depends on vegetation type, climate, and soil physical properties. We assessed the effects of biological factors on Fff by comparing a maturing pine plantation (PP) and a nearby mature Oak-Hickory-type hardwood forest (HW). Fff was …


Journal: Global Change Biology, Volume 11 (3): 421-434 (2005). DOI: 10.1111/j.1365-2486.2005.00915.x Sites: US-Dk3

Gross Primary Production And Ecosystem Respiration Of Irrigated Maize And Irrigated Soybean During A Growing Season
Suyker, A. E., Verma, S. B., Burba, G. G., Arkebauer, T. J.

Using eddy covariance flux measurements, gross primary production (GPP) and ecosystem respiration (Re) of irrigated maize and soybean fields were quantified and examined in terms of relevant controlling variables. Even though the peak green leaf area index (GLAI) of the maize and soybean canopies was comparable …


Journal: Agricultural And Forest Meteorology, Volume 131 (3-4): 180-190 (2005). DOI: 10.1016/j.agrformet.2005.05.007 Sites: US-Ne1, US-Ne2, US-Ne3

Soil Surface Fluxes Of Greenhouse Gases In An Irrigated Maize-Based Agroecosystem
Amos, B., Arkebauer, T. J., Doran, J. W.

An understanding of the effect of fertility management on soil surface fluxes of CO2, N2O, and CH4 is essential in evaluating C sequestration measures that attempt to increase the amount of crop residue returned to the soil through increased fertilizer inputs. In this study, soil surface CO2


Journal: Soil Science Society Of America Journal, Volume 69 (2): 387-395 (2005). DOI: 10.2136/sssaj2005.0387 Sites: US-Ne1, US-Ne2, US-Ne3

Interacting Effects Of Temperature, Soil Moisture And Plant Biomass Production On Ecosystem Respiration In A Northern Temperate Grassland
Flanagan, L. B., Johnson, B. G.

Chamber measurements of total ecosystem respiration (TER) in a native Canadian grassland ecosystem were made during two study years with different precipitation. The growing season (April–September) precipitation during 2001 was less than one-half of the 30-year mean (1971–2000), while 2002 received almost double the normal growing …


Journal: Agricultural And Forest Meteorology, Volume 130 (3-4): 237-253 (2005). DOI: 10.1016/j.agrformet.2005.04.002 Sites: CA-Let

Seasonal Dynamics And Partitioning Of Isotopic CO2 Exchange In A C3/C4 Managed Ecosystem
Griffis, T., Baker, J., Zhang, J.

Ecosystem-atmosphere fluxes of 12CO2 and 13CO2 are needed to better understand the impacts of climate and land use change on ecosystem respiration (FR), net ecosystem CO2 exchange (FN), …


Journal: Agricultural And Forest Meteorology, Volume 132 (1-2): 1-19 (2005). DOI: 10.1016/j.agrformet.2005.06.005 Sites: US-Ro1

Is soil respiration a major contributor to the carbon budget within a Pacific Northwest old-growth forest?
Falk, M., Paw U, K.T., Wharton, S., Schroeder, M.

Carbon dioxide (CO2) exchange was measured above the forest floor of a temperate Douglas-fir (Pseudotsuga menziesii (Mirbel)
Franco) and Western Hemlock (Tsuga heterophylla (Raf.) Sarg.) old-growth forest in southern Washington State. Continuous flux
measurements were conducted from July 1998 to December 2003 using the eddy-covariance …


Journal: Agricultural and Forest Meteorology, Volume 135: 269-283 (2005). DOI: Sites: US-Wrc

Modeling Soil CO2 Emissions From Ecosystems
Del Grosso, S., Parton, W., Mosier, A., Holland, E., Pendall, E., Schimel, D., Ojima, D.

We present a new soil respiration model, describe a formal model testing procedure, and compare our model with five alternative models using an extensive data set of observed soil respiration. Gas flux data from rangeland soils that included a large number of measurements at low temperatures were used to model soil CO2


Journal: Biogeochemistry, Volume 73 (1): 71-91 (2005). DOI: 10.1007/s10533-004-0898-z Sites: US-GLE

Net Ecosystem Production In A Temperate Pine Plantation In Southeastern Canada
Arain, M. A., Restrepo-Coupe, N.

Eddy covariance measurements of carbon dioxide (CO2) and water vapour fluxes were made from June 2002 to May 2003 over a 65-year-old temperate conifer plantation forest in southern Ontario, Canada. This site is part of a newly initiated long-term tower flux measurement …


Journal: Agricultural And Forest Meteorology, Volume 128 (3-4): 223-241 (2005). DOI: 10.1016/j.agrformet.2004.10.003 Sites: CA-Ca1, CA-TP1, CA-TP2, CA-TP3, CA-TP4, US-Dk3, US-GLE, US-Ho1, US-Me4, US-Me5, US-NR1

Modelling CO2 And Energy Exchanges In A Northern Semiarid Grassland Using The Carbon- And Nitrogen-Coupled Canadian Land Surface Scheme (C-CLASS)
Zhang, Y., Grant, R., Flanagan, L., Wang, S., Verseghy, D.

The development of carbon (C) and nitrogen (N) simulations is one of the ongoing efforts in the land surface schemes of climate models. The C- and N-coupled Canadian Land Surface Scheme (C-CLASS) was recently modified to better represent grassland ecosystems. Improvements include revised plant growth and senescence calculations that …


Journal: Ecological Modelling, Volume 181 (4): 591-614 (2005). DOI: 10.1016/j.ecolmodel.2004.07.007 Sites: CA-Let

Forest Thinning And Soil Respiration In A Ponderosa Pine Plantation In The Sierra Nevada
Tang, J., Qi, Y., Xu, M., Misson, L., Goldstein, A. H.

Soil respiration is controlled by soil temperature, soil water, fine roots, microbial activity, and soil physical and chemical properties. Forest thinning changes soil temperature, soil water content, and root density and activity, and thus changes soil respiration. We measured soil respiration monthly and soil temperature and volumetric …


Journal: Tree Physiology, Volume 25 (1): 57-66 (2005). DOI: 10.1093/treephys/25.1.57 Sites: US-Blo