کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4511019 1321887 2010 17 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ecological services of faba bean
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Ecological services of faba bean
چکیده انگلیسی

The key environmental benefits of faba bean are its ability to fix atmospheric nitrogen symbiotically under a broad spectrum of environmental conditions and making this renewable resource available to show positive precrop effects in diversified crop rotations. Non-nitrogen precrop effects entail potential benefits via increased availability of soil phosphorus to the subsequent crops. Faba bean acts as a break crop in intensive cereal-dominated crop rotations.Faba bean enables diversification of the agroecosystem, i.e. planned biodiversity in time via diversified crop rotations and in space via intercrops, indirectly enhancing associated diversity of wild flora, wild fauna and soil microbes that may affect the sustainability of agricultural systems. Nevertheless, most effects are indirect effects on soil fertility, productivity, and system stability, as well as resilience of the entire agroecosystems, effects that can seldom be attributed solely to this crop.The environmental impacts of grain legumes have been studied at different levels by means of life cycle assessment (LCA). Considering the individual crops, it can be shown that faba bean enables savings of energy and reductions of greenhouse gas emissions, but it is difficult to assess all precrop effects at the individual crop level. First, comparisons of whole crop rotations with and without grain legumes show reductions of energy consumption, global warming, ozone formation, and acidification and ecotoxicity in intensive cereal-rich crop rotations. Eutrophication was at a similar level, with a tendency for increased nitrate leaching and a decrease of other N emissions. Replacement of imported soybean meal by locally produced pulses could have a favourable effect, particularly for pulses produced and used on-farm. However, depending on the raw materials used to replace soybean meal, the effects can also be unfavourable. Finally, shifting the human diet toward less reliance on meat has the potential to reduce environmental burdens, but care must be taken that the plant products are not too highly processed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Field Crops Research - Volume 115, Issue 3, 5 February 2010, Pages 217–233
نویسندگان
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