Search Results - "Smith, J. U"

Simulation of CO2 and Attribution Analysis at Six European Peatland Sites Using the ECOSSE Model by Abdalla, M, Hastings, A, Bell, M. J, Smith, J. U, Richards, M, Nilsson, M. B, Peichl, M, Löfvenius, M. O, Lund, M, Helfter, C, Nemitz, E, Sutton, M. A, Aurela, M, Lohila, A, Laurila, T, Dolman, A. J, Belelli-Marchesini, L, Pogson, M, Jones, E, Drewer, J, Drosler, M, Smith, P

“…In this study, we simulated heterotrophic CO₂(Rh) fluxes at six European peatland sites using the ECOSSE model and compared them to estimates of Rh made from…”
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simple equation for simulating C decomposition in a multi-component pool of soil organic matter by Fang, C, Smith, P, Smith, J.U

“…Summary Partitioning carbon (C) pools presents theoretical and practical challenges in soil modelling. In most current models, organic matter (OM) is commonly…”
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Incorporating microorganisms as decomposers into models to simulate soil organic matter decomposition by Fang, C., Smith, P., Smith, J.U., Moncrieff, J.B.

“…Current models simulating soil organic matter (SOM) are based on the assumption of first order decomposition. The microbial component of soil organic C (SOC)…”
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Is resistant soil organic matter more sensitive to temperature than the labile organic matter? by Fang, C., Smith, P., Smith, J. U.

“…A recent paper by Knorr et al. (2005a) suggested that the decomposition of resistant soil organic matter is more temperature sensitive than labile organic…”
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When is a measured soil organic matter fraction equivalent to a model pool? by Smith, J. U., Smith, P., Monaghan, R., MacDonald, A. J.

“…Summary Dynamic simulation models are important tools for rationalizing complex changes in soil organic matter. Most such models for organic matter can be…”
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Challenges in quantifying biosphere–atmosphere exchange of nitrogen species by Sutton, M.A., Nemitz, E., Erisman, J.W., Beier, C., Bahl, K. Butterbach, Cellier, P., de Vries, W., Cotrufo, F., Skiba, U., Di Marco, C., Jones, S., Laville, P., Soussana, J.F., Loubet, B., Twigg, M., Famulari, D., Whitehead, J., Gallagher, M.W., Neftel, A., Flechard, C.R., Herrmann, B., Calanca, P.L., Schjoerring, J.K., Daemmgen, U., Horvath, L., Tang, Y.S., Emmett, B.A., Tietema, A., Peñuelas, J., Kesik, M., Brueggemann, N., Pilegaard, K., Vesala, T., Campbell, C.L., Olesen, J.E., Dragosits, U., Theobald, M.R., Levy, P., Mobbs, D.C., Milne, R., Viovy, N., Vuichard, N., Smith, J.U., Smith, P., Bergamaschi, P., Fowler, D., Reis, S.

“…Recent research in nitrogen exchange with the atmosphere has separated research communities according to N form. The integrated perspective needed to quantify…”
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Effect of plant species, nitrogen fertilizer and grass age on the dynamics of intra-aggregate SOM by Koikkalainen, R.K., Dawson, L.A., Mayes, R.W., Smith, J.U.

“…Plant wax compounds (n-alkanes and alcohols) were used to trace C from the dominant pasture species to different water-stable aggregate (WSA) size classes to…”
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Revised estimates of the carbon mitigation potential of UK agricultural land by Smith, P., Milne, R., Powlson, D.S., Smith, J.U., Falloon, P., Coleman, K.

“… The soil sequestration components of recent estimates of the carbon mitigation potential of UK agricultural land were calculated on the basis of a percentage…”
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Similar response of labile and resistant soil organic matter pools to changes in temperature. [Erratum: 2005 Aug. 11, v. 436, no. 7052, p. 881.] by Fang, C, Smith, P, Moncrieff, J.B, Smith, J.U

“…Our understanding of the relationship between the decomposition of soil organic matter (SOM) and soil temperature affects our predictions of the impact of…”
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Evaluation of the ECOSSE model to predict heterotrophic soil respiration by direct measurements by Dondini, M., Alberti, G., Delle Vedove, G., Ventura, M., Tonon, G., Viger, M., Harris, Z. M., Jenkins, J. R., Richards, M., Pogson, M., Taylor, G., Smith, J. U., Smith, P.

“…Summary This paper aims to evaluate the suitability of the ECOSSE model to estimate soil heterotrophic respiration (Rh) from arable land and short rotation…”
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Regional estimates of carbon sequestration potential: linking the Rothamsted Carbon Model to GIS databases by Falloon, P.D, Smith, P, Smith, J.U, Szabo, J, Coleman, K, Marshall, S

“…Soil organic matter (SOM) represents a major pool of carbon within the biosphere, it is estimated at about 1400 Pg globally, which is roughly twice that in…”
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Changes in mineral soil organic carbon stocks in the croplands of European Russia and the Ukraine, 1990–2070; comparison of three models and implications for climate mitigation by Smith, P., Smith, J. U., Franko, U., Kuka, K., Romanenkov, V. A., Shevtsova, L. K., Wattenbach, M., Gottschalk, P., Sirotenko, O. D., Rukhovich, D. I., Koroleva, P. V., Romanenko, I. A., Lisovoi, N. V.

“…Three soil carbon models (RothC, CANDY and the Model of Humus Balance) were used to estimate the impacts of climate change on agricultural mineral soil carbon…”
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Meeting the UK's climate change commitments: options for carbon mitigation on agricultural land by Smith, P., Powlson, D.S., Smith, J.U., Falloon, P., Coleman, K.

“… Under the Kyoto Protocol, the European Union is committed to an 8% reduction in CO2 emissions, compared to baseline (1990) levels, during the first…”
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Soil organic carbon dynamics of croplands in European Russia: estimates from the “model of humus balance” by Romanenkov, V. A., Smith, J. U., Smith, P., Sirotenko, O. D., Rukhovitch, D. I., Romanenko, I. A.

“…The Model of Humus Balance was used to estimate the influence of climate effects and changing agricultural practices on carbon (C) levels in soddy-podzolic…”
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Development of an empirical model to predict nitrogen dioxide concentrations from weather variables for sites across the UK by Hargreaves, P.R., Smith, J.U., Young, S., Goulding, K.W.T.

“…The prediction of nitrogen dioxide (NO 2) concentrations from simple and available data such as meteorological records accurately over time steps shorter than…”
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Constructing regional scenarios for sustainable agriculture in European Russia and Ukraine for 2000 to 2070 by Romanenko, I. A., Romanenkov, V. A., Smith, P., Smith, J. U., Sirotenko, O. D., Lisovoi, N. V., Shevtsova, L. K., Rukhovich, D. I., Koroleva, P. V.

“…This study estimates the consequences of climate change on cropland with and without implementation of adaptation measures, paying special attention to the…”
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Weekly weather generation for a nitrogen turnover model by Dailey, A.G, Smith, J.U, Whitmore, A.P

“…Three methods of deriving weather for use in a nitrogen decision support system with a weekly time-step are described and evaluated. The simplest of these is…”
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A model to optimise biological control of slugs using nematode parasites by Wilson, M.J., Glen, D.M., Hamacher, G.M., Smith, J.U.

“…The slug Deroceras reticulatum is a widespread pest of many agricultural and horticultural crops. The slug can be controlled with the commercially available…”
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Including trace gas fluxes in estimates of the carbon mitigation potential of UK agricultural land by Smith, P., Goulding, K.W.T., Smith, K.A., Powlson, D.S., Smith, J.U., Falloon, P., Coleman, K.

“… A number of changes in agricultural land‐management show some potential as carbon mitigation options. However, research has focused on CO2‐carbon mitigation…”
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Testing the adequacy of measured data for evaluating nitrogen turnover models by the dot-to-dot method by Smith, J.U, Smith, P, Richter, G.M, Agostini, F.A, Welham, S.J

“…Summary Dynamic models of nitrogen turnover in soil are being used increasingly in agricultural science. To be of value, a model must be thoroughly evaluated,…”
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