Impacts of organic matter amendments on carbon and nitrogen dynamics in grassland soils
作者: Rebecca RyalsMichael KaiserMargaret S. TornAsmeret Asefaw BerheWhendee L. Silver
作者单位: 1University of California, Berkeley, Department of Environmental Science, Policy, and Management, 137 Mulford Hall #3114, Berkeley, CA 94720, USA
2University of California, Merced, School of Natural Sciences, 4225 N Hospital Rd, Atwater, CA 95301, USA
3Lawrence Berkeley National Laboratory, Earth Sciences Division, 1 Cyclotron Rd, Berkeley, CA 94720, USA
刊名: Soil Biology and Biochemistry, 2014, Vol.68 , pp.52-61
来源数据库: Elsevier Journal
DOI: 10.1016/j.soilbio.2013.09.011
关键词: Density fractionationDiffuse Reflectance Infrared Fourier Transform spectroscopyCarbon sequestrationSoil amendmentGrassland ecosystems
英文摘要: Abstract(#br)Organic matter amendments have been proposed as a means to enhance soil carbon (C) stocks on degraded soils. However, only few data exist on rates of soil C sequestration or the fate of added C in grassland soils, which are generally thought to have high C storage potential. We measured changes in the amount of C and nitrogen (N) in soils and in the composition of soil organic matter (SOM) following a single application of composted organic matter in two annual grasslands from different bioclimatic zones (coastal and inland valley). There was a significant increase in bulk soil organic C content at the valley grassland, and a similar but non-significant trend at the coastal grassland. Physical fractionation of soil three years after organic matter amendment revealed increases...
全文获取路径: Elsevier  (合作)
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影响因子:3.654 (2012)

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