Adequate vegetative cover decreases nitrous oxide emissions from cattle urine deposited in grazed pastures under rainy season conditions
作者： Ngonidzashe Chirinda , Sandra Loaiza , Laura Arenas , Veronica Ruiz , Claudia Faverin
DOI: 10.1038/S41598-018-37453-2
关键词: Nitrous oxide 、 Nitrogen 、 Grazing 、 Environmental science 、 Urine 、 Agronomy 、 Agriculture 、 Productivity (ecology) 、 Pasture 、 Wet season
摘要: A decline in pasture productivity is often associated with a reduction vegetative cover. We hypothesize that nitrogen (N) urine deposited by grazing cattle on degraded pastures, low cover, highly susceptible to losses. Here, we quantified the magnitude of urine-based nitrous oxide (N2O) lost from soil under paired (low cover) and non-degraded (adequate pastures across five countries Latin America Caribbean (LAC) region estimated urine-N emission factors. Soil N2O emissions simulated patches were closed static chambers gas chromatography. At regional level, rainy season cumulative (3.31 versus 1.91 kg N2O-N ha−1) factors (0.42 0.18%) higher for cover compared adequate pastures. Findings indicate conditions, through proper management could help reduce urine-induced grazed
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