Zobrazeno 1 - 10
of 185
pro vyhledávání: '"Human impact on the nitrogen cycle"'
Publikováno v:
Geophysical Research Letters. 44:2502-2510
Denitrification and hydrologic leaching are the two major pathways by which nitrogen is lost from the terrestrial biosphere. Humid tropical forests are thought to dominate denitrification from unmanaged lands globally, but there is large uncertainty
Autor:
Jerke W. De Vries, Roland W. Melse
Publikováno v:
Biosystems Engineering, 161, 53-61
Biosystems Engineering 161 (2017)
Biosystems Engineering 161 (2017)
Intensive livestock production involves environmental emissions and impacts, including emission of greenhouse gases and ammonia leading to climate change and terrestrial acidification. Ammonia emission from animal housing systems can be reduced by in
Publikováno v:
Geoderma. 285:57-63
Tropical forests with highly-weathered soils are considered to be high sensitive to nitrogen (N) deposition and subsequent soil acidification. Phosphorus (P) shortage in tropical forest ecosystems is suggested to be one important factor that makes th
Autor:
Upendra M. Sainju
Publikováno v:
MethodsX, Vol 4, Iss C, Pp 199-208 (2017)
MethodsX
MethodsX
Nitrogen balance in agroecosystems provides a quantitative framework of N inputs and outputs and retention in the soil that examines the sustainability of agricultural productivity and soil and environmental quality. Nitrogen inputs include N additio
Publikováno v:
Ecological Engineering. 94:37-49
The systematic nitrogen transformations were investigated in a tropical freshwater system using a three-dimensional Hydro-Eutrophication model, which simulated hydrodynamics, phytoplankton processes and nutrients cycling in Delft3D. The nitrification
Autor:
Lars Stoumann Jensen, Sander Bruun, Tays Nyord, Nicholas J. Hutchings, Gregory Peters, Marieke ten Hoeve
Publikováno v:
ten Hoeve, M, Nyord, T, Peters, G M, Hutchings, N J, Jensen, L S & Bruun, S 2016, ' A life cycle perspective of slurry acidification strategies under different nitrogen regulations ', Journal of Cleaner Production, vol. 127, pp. 591-599 . https://doi.org/10.1016/j.jclepro.2016.04.014
Livestock manure is a major contributor to ammonia and greenhouse gas emissions and treatment technologies such as slurry acidification can be used to reduce both. In this study, life cycle assessment was used to compare impact potentials of slurry a
Publikováno v:
Estuaries and Coasts. 39:1626-1638
Coastal ocean primary productivity is often limited by nitrogen (N) availability, which is determined by the balance between N sources (e.g., N-fixation, groundwater, river inputs, etc.) and sinks (e.g., denitrification, sediment burial, etc.). Histo
Publikováno v:
Geophysical Research Letters. 43:4500-4509
The impact of increasing anthropogenic atmospheric nitrogen deposition on marine biogeochemistry is uncertain. We performed simulations to quantify its effect on nitrogen cycling and marine productivity in a global 3-D ocean biogeochemistry model. Ni
Publikováno v:
Journal of Geophysical Research: Biogeosciences. 120:2457-2472
Elevated anthropogenic nitrogen (N) deposition has caused nitrate (NO3−) leaching, an indication of N saturation, in several temperate and boreal forests across the Northern Hemisphere. So far, the occurrence of N saturation in subtropical forests
Autor:
Alicia M. Wilson, Samantha B. Joye, Charles A. Schutte, Willard S. Moore, Karen L. Casciotti, Tyler B. Evans
Publikováno v:
Global Biogeochemical Cycles. 29:1584-1598
Approximately 40% of the total global rate of nitrogen fixation is the result of human activities, and most of this anthropogenic nitrogen is used to fertilize agricultural fields. Approximately 23% of the applied agricultural nitrogen is delivered t