نتایج جستجو برای: greenhouse gases ghgs emissions
تعداد نتایج: 120906 فیلتر نتایج به سال:
municipal solid wastes (msws) vary in terms of quality and quantity, especially their toxic content. the efficient and sound disposal of msws not only needs implementing an integrated management procedure, but also performing a conservative way to reduce the impacts on resources. in the present research, after characterization of msw streams and consideration of disposal methods practiced in si...
China was responsible for 25 per cent of global carbon dioxide emissions in 2012 (Liu 2015). This followed the passing of key milestones in the previous decade. From 2007, China’s per capita carbon dioxide emissions exceeded the world average and it has become the world’s largest contributor to annual carbon dioxide emissions, with the burning of fossil fuels and cement production being two imp...
Modern cropping systems use substantial amounts of fossil energy in the form of fertilizers, pesticides, and fuel for field operations. An important environmental consequence of this use is the emission of greenhouse gases (GHGs) to the atmosphere, from sources both direct and indirect. Direct sources include fossil fuel used for tillage and other field operations as well as GHGs produced and c...
Current emissions of anthropogenic greenhouse gases (GHGs) have already committed the planet to an increase in average surface temperature by the end of the century that may be above the critical threshold for tipping elements of the climate system into abrupt change with potentially irreversible and unmanageable consequences. This would mean that the climate system is close to entering if not ...
Agriculture is one of the largest anthropogenic sources of greenhouse gases (GHGs), with dairy and beef production accounting for nearly two-thirds of emissions. Several recent papers suggest that dung beetles may affect fluxes of GHGs from cattle farming. Here, we put these previous findings into context. Using Finland as an example, we assessed GHG emissions at three scales: the dung pat, pas...
[1] Natural emissions of nonmethane volatile organic compounds (NMVOCs) play a crucial role in the oxidation capacity of the lower atmosphere and changes in concentrations of major greenhouse gases (GHGs), particularly methane and tropospheric ozone. In this study, we integrate a global biogenic model within a terrestrial ecosystem model to investigate the vegetation and soil emissions of key i...
Agriculture is one of the largest anthropogenic sources of greenhouse gases (GHGs), with dairy and beef production accounting for nearly two-thirds of emissions. Several recent papers suggest that dung beetles may affect fluxes of GHGs from cattle farming. Here, we put these previous findings into context. Using Finland as an example, we assessed GHG emissions at three scales: the dung pat, pas...
With its burgeoning energy consumption and emissions of greenhouse gases (GHGs), China is central to addressing the problem of climate change. As the world leader in GHG emissions for years, China is under tremendous international pressure in the fight against climate change. Focusing on China's coal-to-chemicals industriesa major user of coal and significant contributor to GHG and other emiss...
Construction and mining industries are using more than 20% of all non-road engines and listed as the third largest contributor to greenhouse gases (GHGs) emission globally. GHGs emitted from engines in construction and mining sites have not been fully investigated yet. Normally, government agencies and construction contractors estimate emitted pollution approximately based on consumed fuel for ...
Forests play an important role in regulating the global climate by storing carbon that would otherwise be released as CO2 to the atmosphere, and affecting the global energy balance through absorption of solar radiation. Forests are also affected directly by the impact of increased CO2 levels and temperatures on ecosystem processes, and indirectly by human responses seeking to mitigate the net e...
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