PLANT DIVERSITY, CO2, AND N INFLUENCE INORGANIC AND ORGANIC N LEACHING IN GRASSLANDS
نویسندگان
چکیده
منابع مشابه
Plant diversity, CO2, and N influence inorganic and organic N leaching in grasslands.
In nitrogen (N)-limited systems, the potential to sequester carbon depends on the balance between N inputs and losses as well as on how efficiently N is used, yet little is known about responses of these processes to changes in plant species richness, atmospheric CO2 concentration ([CO2]), and N deposition. We examined how plant species richness (1 or 16 species), elevated [CO2] (ambient or 560...
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20 MARIE TRYDEMAN KNUDSEN, IB SILLEBAK KRISTENSEN, JØRGEN BERNTSEN, BJØRN MOLT PETERSEN & ERIK STEEN KRISTENSEN Adresses: Danish Research Centre for Organic Farming (DARCOF), P.O. Box 50, DK-8830 Tjele, Denmark Research Centre Foulum, Department of Agroecology, P.O. Box 50, DK-8830 Tjele, Denmark Short title: N leaching losses for organic and conventional farming
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The leaching kinetics of a low-grade zinc oxide ore in different acid media was investigated with respect to the experimental variables including acid concentration, temperature, liquid to solid (L/S) ratio, and stirring speed. The results obtained showed that the leaching reagent concentration and the reaction temperature exerted significant effects on the extraction of zinc, whereas the L/S r...
متن کاملSpecies and functional group diversity independently influence biomass accumulation and its response to CO2 and N.
The characteristics of plant assemblages influence ecosystem processes such as biomass accumulation and modulate terrestrial responses to global change factors such as elevated atmospheric CO(2) and N deposition, but covariation between species richness (S) and functional group richness (F) among assemblages obscures the specific role of each in these ecosystem responses. In a 4-year study of g...
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ژورنال
عنوان ژورنال: Ecology
سال: 2007
ISSN: 0012-9658
DOI: 10.1890/06-0733