全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:Keith A. Smith , Jonathan Massheder
来源:[J].Nutrient Cycling in Agroecosystems(IF 1.416), 2014, Vol.98 (3), pp.309-326Springer
摘要:Abstract(#br)Emissions of nitrous oxide (N 2 O) from N-fertilized silage grassland in the UK were modelled with a hybrid part-empirical part-mechanistic model, B-LINE 2. N 2 O fluxes were predicted from combinations of three soil variables: soil water-filled pore space (WFPS...
作者:Keith A. Smith , Karen E. Dobbie ...
来源:[J].Nutrient Cycling in Agroecosystems(IF 1.416), 2012, Vol.93 (2), pp.127-149Springer
摘要:Abstract(#br)Nitrous oxide emission factors (EFs) were calculated from measurements of emissions from UK wheat crops and grassland, that were part of a wider research programme on N loss pathways and crop responses. Field studies were undertaken in 2003, 2004 and 2005—a tota...
作者:Keith A. Smith , Iain P. McTaggart ...
来源:[J].Nutrient Cycling in Agroecosystems(IF 1.416), 1998, Vol.52 (2-3), pp.123-130Springer
摘要:Abstract(#br)Potato fields and cut (ungrazed) grassland in SE Scotland gave greater annual N 2 O emissions per ha (1.0–3.2 kg N 2 O–N ha -1 ) than spring barley or winter wheat fields (0.3–0.8 kg N 2 O–N ha -1 ), but in terms of emission per unit of N applied the order ...
作者:Keith W. Goulding , Keith A. Smith ...
来源:[J].Nutrient Cycling in Agroecosystems(IF 1.416), 2001, Vol.60 (1-3), pp.237-252Springer
摘要:Abstract(#br)The possibility that the carbon sink in agricultural soils can be enhanced has taken on great political significance since the Kyoto Protocol was finalised in December 1997. The Kyoto Protocol allows carbon emissions to be offset by demonstrable removal of carbo...
作者:Karen E. Dobbie , Keith A. Smith
来源:[J].Nutrient Cycling in Agroecosystems(IF 1.416), 2003, Vol.67 (1), pp.37-46Springer
摘要:Abstract(#br)Nitrous oxide (N 2 O) emissions were measured over two years from an intensively managed grassland site in the UK. Emissions from ammonium nitrate (AN) and urea (UR) were compared to those from urea modified by various inhibitors (a nitrification inhibitor, UR(N...
作者:Dave S. Reay , Anthony C. Edwards , Keith A. Smith
来源:[J].Agriculture, Ecosystems and Environment(IF 2.859), 2009, Vol.133 (3), pp.163-169Elsevier
摘要:Abstract(#br)Direct and indirect nitrous oxide (N 2 O) emissions and leaching losses from an intensively managed grazed pasture in the Ythan catchment, Aberdeenshire, UK, were measured and compared over a 17-month period. Simultaneous measurements of farm-wide leaching losse...
作者:... Tom Ball , Keith A. Smith , Maurizio Mencuccini
来源:[J].Forest Ecology and Management(IF 2.766), 2004, Vol.205 (1), pp.227-240Elsevier
摘要:Abstract(#br)We investigated whether the establishment of forests on organic grassland soils leads to significant losses in soil carbon, due to the site preparation for the planting of trees and other disturbances. We also investigated whether subsequent biomass accumulation...
作者:Keith A. Smith , Rilner A. Flores ...
来源:[J].Soil Biology and Biochemistry(IF 3.654), 2011, Vol.46, pp.129-135Elsevier
摘要:Abstract(#br)Soil N 2 O fluxes are frequently assessed by the use of static chambers with a single daily sampling. In this study, two experiments were conducted in two contrasting climatic locations, one in Edinburgh, UK, and the other at Seropédica, Rio de Janeiro State, Br...
作者:... Søren Christensen , Karen E. Dobbie , Keith A. Smith
来源:[J].Soil Biology and Biochemistry(IF 3.654), 1997, Vol.29 (8), pp.1269-1273Elsevier
摘要:Abstract(#br)In a successional range of sites on former arable land in Denmark and Scotland, CH 4 oxidation rates took more than 100 y to reach pre-cultivation level. During the first 2–5 y following abandonment of agriculture, CH 4 oxidation decreased slightly, eventually f...
作者:... DAVID S. REAY , KEITH A. SMITH , ANDY R. MCLEOD
来源:[J].Plant, Cell & Environment(IF 5.135), 2015, Vol.38 (5), pp.980-989Wiley
摘要:Abstract(#br)The original report that plants emit methane ( CH 4) under aerobic conditions caused much debate and controversy. Critics questioned experimental techniques, possible mechanisms for CH 4 production and the nature of estimating global emissi...

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