Publications

Publications Found: 1437

Nitrous Oxide Emission From No-Till Irrigated Corn
Ginting, D., Eghball, B.

Field experiments were conducted to determine optimal time during the day for N2O flux determination and to evaluate the effects of wheel traffic and soil parameters on N2O fluxes following urea ammonium nitrate (UAN) injection and summer UAN fertigations. The experiments were located on silty clay loam soils …


Journal: Soil Science Society Of America Journal, Volume 69 (3): 915-925 (2005). DOI: 10.2136/sssaj2004.0292 Sites: US-Ne1, US-Ne2, US-Ne3

Carbon And Biomass Partitioning In Balsam Fir (Abies Balsamea)
Xing, Z., Bourque, C. P., Swift, D. E., Clowater, C. W., Krasowski, M., Meng, F.
Balsam fir (Abies balsamea (L.) Mill) was extensively sampled to investigate the effects of forest management practices, site location, within-crown position, tree component (i.e., stem, foliage, branches and roots), and tree social classes on biomass and carbon (C) partitioning at the individual …


Journal: Tree Physiology, Volume 25 (9): 1207-1217 (2005). DOI: 10.1093/treephys/25.9.1207 Sites: CA-Na1

Continuous Measurements Of Soil Respiration With And Without Roots In A Ponderosa Pine Plantation In The Sierra Nevada Mountains
Tang, J., Misson, L., Gershenson, A., Cheng, W., Goldstein, A. H.

Continuous measurements of soil respiration and its components help us understand diurnal and seasonal variations in soil respiration and its mechanism. We continuously measured CO2 concentration at various depths in the soil and calculated surface CO2efflux …


Journal: Agricultural And Forest Meteorology, Volume 132 (3-4): 212-227 (2005). DOI: 10.1016/j.agrformet.2005.07.011 Sites: US-Blo

Atmospheric Aerosol Light Scattering And Surface Wetness Influence The Diurnal Pattern Of Net Ecosystem Exchange In A Semi-Arid Ponderosa Pine Plantation
Misson, L., Lunden, M., McKay, M., Goldstein, A. H.

The diurnal variation of net ecosystem exchange (NEE) showed an unusual pattern at the Blodgett Forest Ameriflux site, with late afternoon NEE lower than early morning (indicating more uptake), while air temperature and atmospheric vapor pressure deficit were much higher. …


Journal: Agricultural And Forest Meteorology, Volume 129 (1-2): 69-83 (2005). DOI: 10.1016/j.agrformet.2004.11.008 Sites: US-Blo

Annual Carbon Dioxide Exchange In Irrigated And Rainfed Maize-Based Agroecosystems
Verma, S. B., Dobermann, A., Cassman, K. G., Walters, D. T., Knops, J. M., Arkebauer, T. J., Suyker, A. E., Burba, G. G., Amos, B., Yang, H., Ginting, D., Hubbard, K. G., Gitelson, A. A., Walter-Shea, E. A.

Carbon dioxide exchange was quantified in maize–soybean agroecosystems employing year-round tower eddy covariance flux systems and measurements of soil C stocks, CO2fluxes from the soil surface, plant biomass, and litter decomposition. Measurements were made in three cropping systems: (a) irrigated continuous maize, …


Journal: Agricultural And Forest Meteorology, Volume 131 (1-2): 77-96 (2005). DOI: 10.1016/j.agrformet.2005.05.003 Sites: US-Ne1, US-Ne2, US-Ne3

Soil Properties Differently Influence Estimates Of Soil CO2 Efflux From Three Chamber-Based Measurement Systems
Butnor, J. R., Johnsen, K. H., Maier, C. A.

Soil CO2 efflux is a major component of net ecosystem productivity (NEP) of forest systems. Combining data from multiple researchers for larger-scale modeling and assessment will only be valid if their methodologies provide directly comparable …


Journal: Biogeochemistry, Volume 73 (1): 283-301 (2005). DOI: 10.1007/s10533-004-4022-1 Sites: US-Dk2, US-Dk3

Observations Of Total Alkyl Nitrates Within The Sacramento Urban Plume
Cleary, P. A., Murphy, J. G., Day, P. J. Wooldridge, D. A., Millet, D. B., McKay, M., Goldstein, A. H., Cohen, R. C.

During the summer of 2001, NO2, total peroxy nitrates (ΣPNs), total alkyl nitrates (ΣANs), HNO3, volatile organic compounds (VOC), CO2, O3, and meteorological variables were measured at Granite Bay, CA. The diurnal variation in ΣPNs, ΣANs and HNO3 were all strongly correlated …


Journal: Atmospheric Chemistry And Physics Discussions, Volume 5 (4): 4801-4843 (2005). DOI: 10.5194/acpd-5-4801-2005 Sites: US-Blo

Assessing The Past And Future Distribution And Productivity Of Ponderosa Pine In The Pacific Northwest Using A Process Model, 3-Pg
Coops, N. C., Waring, R. H., Law, B. E.

Climate variability at decadal scales influences not only the growth of widely distributed species such as Pinus ponderosa, but also can have an effect on the timing and severity of fire and insect outbreaks that may alter species distributions. In this paper, we present a spatial modelling technique to assess the influence …


Journal: Ecological Modelling, Volume 183 (1): 107-124 (2005). DOI: 10.1016/j.ecolmodel.2004.08.002 Sites: US-Me2, US-Me4, US-Me5

On The Separation Of Net Ecosystem Exchange Into Assimilation And Ecosystem Respiration: Review And Improved Algorithm
Reichstein, M., Falge, E., Baldocchi, D., Papale, D., Aubinet, M., Berbigier, P., Bernhofer, C., Buchmann, N., Gilmanov, T., Granier, A., Grunwald, T., Havrankova, K., Ilvesniemi, H., Janous, D., Knohl, A., Laurila, T., Lohila, A., Loustau, D., Matteucci, G., Meyers, T., Miglietta, F., Ourcival, J., Pumpanen, J., Rambal, S., Rotenberg, E., Sanz, M., Tenhunen, J., Seufert, G., Vaccari, F., Vesala, T., Yakir, D., Valentini, R.

This paper discusses the advantages and disadvantages of the different methods that separate net ecosystem exchange (NEE) into its major components, gross ecosystem carbon uptake (GEP) and ecosystem respiration (Reco). In particular, we analyse the effect of the extrapolation of night-time values of ecosystem …


Journal: Global Change Biology, Volume 11 (9): 1424-1439 (2005). DOI: 10.1111/j.1365-2486.2005.001002.x Sites: US-Bo1, US-Bo2

Measuring Canopy Structure And The Kinematics Of Subcanopy Flows In Two Forests
Staebler, R. M., Fitzjarrald, D. R.

A better understanding of forest subcanopy flows is needed to evaluate their role in the horizontal movement of scalars, particularly in complex terrain. This paper describes detailed measurements of the canopy structure and its variability in both the horizontal …


Journal: Journal Of Applied Meteorology, Volume 44 (8): 1161-1179 (2005). DOI: 10.1175/jam2265.1 Sites: US-Ha1