Agriculture, Ecosystems & Environment

Journal: Agriculture, Ecosystems & Environment

Abbreviation

Agric. Ecosyst. Environ.

Publisher

Elsevier

ISSN

0167-8809
1873-2305

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Publications 1 - 10 of 116

Use of topographic variability for assessing plant diversity in agricultural landscapes
Hofer, Gabriela; Bunce, Robert G.H.; Edwards, Peter J.; et al. (2011)
Agriculture, Ecosystems & Environment
The net biome production of full crop rotations in Europe
Kutsch, W.L.; Aubinet, M.; Buchmann, Nina; et al. (2010)
Agriculture, Ecosystems & Environment
Management effects on net ecosystem carbon and GHG budgets at European crop sites
Ceschia, Éric; Béziat, Pierre; Dejoux, Jean François; et al. (2010)
Agriculture, Ecosystems & Environment
The greenhouse gas budgets of 15 European crop sites covering a large climatic gradient and corresponding to 41 site-years were estimated. The sites included a wide range of management practices (organic and/or mineral fertilisation, tillage or ploughing, with or without straw removal, with or without irrigation, etc.) and were cultivated with 15 representative crop species common to Europe. At all sites, carbon inputs (organic fertilisation and seeds), carbon exports (harvest or fire) and net ecosystem production (NEP), measured with the eddy covariance technique, were calculated. The variability of the different terms and their relative contributions to the net ecosystem carbon budget (NECB) were analysed for all site-years, and the effect of management on NECB was assessed. To account for greenhouse gas (GHG) fluxes that were not directly measured on site, we estimated the emissions caused by field operations (EFO) for each site using emission factors from the literature. The EFO were added to the NECB to calculate the total GHG budget (GHGB) for a range of cropping systems and management regimes. N2O emissions were calculated following the IPCC (2007) guidelines, and CH4 emissions were estimated from the literature for the rice crop site only. At the other sites, CH4 emissions/oxidation were assumed to be negligible compared to other contributions to the net GHGB. Finally, we evaluated crop efficiencies (CE) in relation to global warming potential as the ratio of C exported from the field (yield) to the total GHGB. On average, NEP was negative (−284 ± 228 g C m−2 year−1), and most cropping systems behaved as atmospheric sinks, with sink strength generally increasing with the number of days of active vegetation. The NECB was, on average, 138 ± 239 g C m−2 year−1, corresponding to an annual loss of about 2.6 ± 4.5% of the soil organic C content, but with high uncertainty. Management strongly influenced the NECB, with organic fertilisation tending to lower the ecosystem carbon budget. On average, emissions caused by fertilisers (manufacturing, packaging, transport, storage and associated N2O emissions) represented close to 76% of EFO. The operation of machinery (use and maintenance) and the use of pesticides represented 9.7 and 1.6% of EFO, respectively. On average, the NEP (through uptake of CO2) represented 88% of the negative radiative forcing, and exported C represented 88% of the positive radiative forcing of a mean total GHGB of 203 ± 253 g C-eq m−2 year−1. Finally, CE differed considerably among crops and according to management practices within a single crop. Because the CE was highly variable, it is not suitable at this stage for use as an emission factor for management recommendations, and more studies are needed to assess the effects of management on crop efficiency.
Quantifying the impact of landscape and habitat features on biodiversity in cultivated landscapes
Jeanneret, Ph.; Schüpbach, B.; Luka, H. (2003)
Agriculture, Ecosystems & Environment
Effects of mowing, grazing and fertilization on soil seed banks in temperate grasslands in Central Europe
Klaus, Valentin; Schäfer, Deborah; Prati, Daniel; et al. (2018)
Agriculture, Ecosystems & Environment
An assessment of N-cycling and sources of N2O during a simulated rain event using natural abundance 15N
Decock, Charlotte; Six, Johan (2013)
Agriculture, Ecosystems & Environment
Slash-and-burn agriculture and tropical cyclone activity in Madagascar: Implication for soil fertility dynamics and corn performance
Gay-des Combes, Justine M.; Robroek, Bjorn J.M.; Hérvé, Dominique; et al. (2017)
Agriculture, Ecosystems & Environment
Exclusion of soil macrofauna did not affect soil quality but increased crop yields in a sub-humid tropical maize-based system
Paul, Birthe K.; Vanlauwe, Bernard; Hoogmoed, Marianne; et al. (2015)
Agriculture, Ecosystems & Environment
Phytomanagement of metal-contaminated agricultural land using sunflower, maize and tobacco
Fässler, Erika; Robinson, Brett H.; Stauffer, Werner; et al. (2010)
Agriculture, Ecosystems & Environment
Potential regional productivity and greenhouse gas emissions of fertilized and irrigated switchgrass in a Mediterranean climate
Lee, Juhwan; Pedroso, Gabriel; Kessel, Chris van; et al. (2015)
Agriculture, Ecosystems & Environment

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Journal: Agriculture, Ecosystems & Environment

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