خيارات البحث
النتائج 1 - 10 من 24
Historical arsenic contamination of soil due to long-term phosphate fertiliser applications
2013
Hartley, Tom N. | Macdonald, Andy J. | McGrath, Steve P. | Zhao, Fang-Jie
Archived samples from the Park Grass Experiment, established in 1856, were analysed to determine the impacts of long-term phosphate fertiliser applications on arsenic concentrations in soil and herbage. In plots receiving 35 kg P ha−1 annually (+P), topsoil As concentrations almost doubled from an initial value of ∼10 mg kg−1 during 1888–1947 and remained stable thereafter. The phosphate fertilisers used before 1948 contained 401–1575 mg As kg−1, compared to 1.6–20.3 mg As kg−1 in the later samples. Herbage samples from the +P plots collected during 1888–1947 contained significantly more As than those from the −P plots, but later samples did not differ significantly. Mass-balance calculations show that the increase in soil As can be explained by the As input from P fertiliser applications before 1948. The results demonstrate that the P fertilisers used on the Park Grass Experiment before 1948 caused substantial As contamination of the soil.
اظهر المزيد [+] اقل [-]Distribution of trace element pollutants in a contaminated grassland ecosystem established on metalliferous fluorspar tailings. 1: lead
1989
Andrews, S.M. | Johnson, M.S. | Cooke, J.A. (Dep. Biol., Sunderland Polytechnic, Sunderland (UK))
Mutual effects of soil organic matter dynamics and heavy metals fate in a metallophyte grassland
1999
Balabane, M. | Faivre, D. | Oort, F. van | Dahmani-Muller, H. (INRA Unite de Science du Sol, Route de St Cyr, 78026 Versailles Cedex (France))
Accumulation of 137Cs and 90Sr from contaminated soil by three grass species inoculated with mycorrhizal fungi
1999
Entry, J.A. | Watrud, L.S. | Reeves, M. (USDA Agricultural Research Service, Northwest Irrigation and Soil Research Laboratory, 3793 N 3600 E, Kimberly, ID 83341 (USA))
Consequences of new scientific findings for future abatement of ammonia emissions
1998
Erisman, J.W. | Monteny, G.J. (ECN, P.O. Box 1, 1755 ZG Petten (Netherlands))
Mitigation of nitrous oxide emission from dairy farming systems
1998
Velthof, G.L. | Beusichem, M.L. van | Oenema, O. (Nutrient Management Institute NMI, Wageningen Agricultural University, P.O. Box 8005, 6700 EC Wageningen (Netherlands))
Response of a grassland ecosystem to air pollutants. VI. The chemical climate: concentrations and potential flux densities of relevant criteria pollutants
1998
Grunhage, L. | Dammgen, U. | Haenel, H.D. | Jager, H.J. (Institute for Plant Ecology, University of Giessen, Heinrich-Buff-Ring 38, D-35392 Giessen, Germany)
Deposition of nitrogen-containing compounds to an extensively managed grassland in central Switzerland
1996
Hesterberg, R. | Blatter, A. | Fahrni, M. | Rosset, M. | Neftel, A. | Eugster, W. | Wanner, H. (Swiss Federal Research Station for Agricultural Chemistry and Environmental Hygiene, CH-3097 Liebefeld-Bern (Switzerland))
Ambient ozone (O3) and adverse crop response: a unified view of cause and effect
1995
Krupa, S.V. | Grunhage, L. | Jager, H.J. | Nosal, M. | Manning, W.J. | Legge, A.H. | Hanewald, K. (Department of Plant Pathology, University of Minnesota, St. Paul, MN 55108 (USA))
Response of a grassland ecosystem to air pollutants: III -The chemical climate: Vertical flux densities of gaseous species in the atmosphere near the ground
1994
Gruenhage, L. | Daemmgen, U. | Haenel, H.D. | Jaeger, H.J. (Institute for Plant Ecology, University of Giessen, Giessen (Germany))
