کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2415033 1552115 2010 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Does North Appalachian agriculture contribute to soil carbon sequestration?
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Does North Appalachian agriculture contribute to soil carbon sequestration?
چکیده انگلیسی

Agricultural systems are important for world ecosystems. They can be managed to moderate CO2 emissions. World soils can be both a sink and source of atmospheric CO2, but it is a slow process. Data from long-term soil management experiments are needed to assess soil carbon (C) sink capacity through a complete life cycle analysis of direct and hidden C changes. Eight commonly used agricultural systems in northern Appalachia (OH, USA) were tested after 38 year to assess the magnitude of the soil C pool. Only a forest ecosystem and a no-tillage corn (Zea mays L.) crop plus manure increased soil organic carbon (SOC) by 37.3 and 33.3 Mg C ha−1, respectively; meanwhile monoculture corn and/or no-tillage practices maintained the SOC level over the period. Thus, most of north Appalachian agriculture, with current practices, does not contribute to C sequestration. Improved agricultural practices for no-tillage continuous corn should include cultivars with higher residue production (above- and belowground) and slower decomposition rates in order to increase SOC sequestration.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 137, Issues 3–4, 15 May 2010, Pages 373–376
نویسندگان
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