Relative nitrogen efficiency, a new indicator to assess crop livestock farming systems
نویسندگان
چکیده
منابع مشابه
Integrated crop-livestock farming systems
a substantial global increase in the demand for food of animal origin, while also aggravating the competition between crops and livestock (increasing cropping areas and reducing rangelands). The livestock revolution 1 is stretching the capacity of existing production, but it is also exacerbating environmental problems. Therefore, while it is necessary to satisfy consumer demand, improve nutriti...
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Recent studies suggest that human activities have accelerated the production and emissions of reactive nitrogen on a global scale. Increased nitrogen emissions may lead to environmental impacts including photochemical air pollution, reduced visibility, changes in biodiversity, and stratospheric ozone depletion. Emissions from agricultural activities, both crop and animal, are known to contain r...
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The streams of North America convey excessive amounts of nitrate-nitrogen, the effects of which range from eutrophication of local surface waters to hypoxia in the Gulf of Mexico. The vast majority of the nitrate load can be attributed to agricultural sources. The diffuse nature of these sources defies the more traditional treatment strategies. The concrete and steel structures of point-source ...
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ژورنال
عنوان ژورنال: Agronomy for Sustainable Development
سال: 2015
ISSN: 1774-0746,1773-0155
DOI: 10.1007/s13593-015-0281-6