Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil.
Effect of the application of cattle urine with or without the nitrification inhibitor DCD, and dung on greenhouse gas emissions from a UK grassland soil.
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DOI：
10.1016/j.agee.2016.10.025
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发表时间：
2016-11-01
影响因子：
6.6
通讯作者：
Chadwick, D.
中科院分区：
文献类型：
--
作者：
Cardenas, L. M.;Misselbrook, T. M.;Hodgson, C.;Donovan, N.;Gilhespy, S.;Smith, K. A.;Dhanoa, M. S.;Chadwick, D.
春季施肥时，N_2O从尿沉降到草地的排放通量较大。荟萃分析显示，季节对N2O EFs有显著影响，而治疗对N2O EFs无显著影响。与尿液相比，粪便的甲烷排放量更大。CH4总量在不同季节有显著差异（春季最低）。CH4总量在处理之间没有显著差异。放牧草地土壤N2O排放具有很大的不确定性，由于排泄物沉积的巨大空间变异性，导致养分的不均匀分布。尿液的贡献不稳定的N池，远大于从粪便，可能是一个主要的排放源，因此，需要努力确定N2O排放因子（EFs）从尿液和粪便的沉积，以提高库存的温室气体从农业。研究了放牧季节不同时间施用牛尿和牛粪对草地粘壤土N2O排放的影响。甲烷排放量也被量化。我们评估了硝化抑制剂，双氰胺（DCD），对N2O排放量从尿液中的应用，也包括人工尿液处理的效果。有显着差异的N2O EFs处理之间在春季（最大的尿液和最低的粪便），但在夏季和秋季的应用。我们还发现，有一个显着的影响，季节（春季最大），但没有处理的N2O EFs。春、夏、秋三季尿素的EF值分别为施氮量的2.96%、0.56%和0.11%。春、夏、秋三季粪样N_2O排放系数分别为0.14、0.39和0.10%。抑制剂是有效的，在减少N2O排放量的春季应用程序。甲烷排放量较大，从粪肥的应用，但没有显着差异，在整个应用季节的治疗。
N2O EFs from urine deposition to grassland are larger if applied in spring. Meta-analysis showed a significant effect of season and not of treatment on the N2O EFs. Methane emissions were larger from the dung application compared to urine. CH4 totals were significantly different across seasons (lowest in spring). CH4 totals were not significantly different between treatments. Emissions of nitrous oxide (N2O) from soils from grazed grasslands have large uncertainty due to the great spatial variability of excreta deposition, resulting in heterogeneous distribution of nutrients. The contribution of urine to the labile N pool, much larger than that from dung, is likely to be a major source of emissions so efforts to determine N2O emission factors (EFs) from urine and dung deposition are required to improve the inventory of greenhouse gases from agriculture. We investigated the effect of the application of cattle urine and dung at different times of the grazing season on N2O emissions from a grassland clay loam soil. Methane emissions were also quantified. We assessed the effect of a nitrification inhibitor, dicyandiamide (DCD), on N2O emissions from urine application and also included an artificial urine treatment. There were significant differences in N2O EFs between treatments in the spring (largest from urine and lowest from dung) but not in the summer and autumn applications. We also found that there was a significant effect of season (largest in spring) but not of treatment on the N2O EFs. The resulting EF values were 2.96, 0.56 and 0.11% of applied N for urine for spring, summer and autumn applications, respectively. The N2O EF values for dung were 0.14, 0.39 and 0.10% for spring, summer and autumn applications, respectively. The inhibitor was effective in reducing N2O emissions for the spring application only. Methane emissions were larger from the dung application but there were no significant differences between treatments across season of application.
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影响因子：
6.6
作者：
de Klein, Cecile A. M.;Luo, Jiafa;Cox, Neil
通讯作者：
Cox, Neil
影响因子：
9.7
作者：
Kool, Dorien M.;Hoffland, Ellis;van Groenigen, Jan Willem
通讯作者：
van Groenigen, Jan Willem
影响因子：
6.6
作者：
Cardenas, L. M.;Thorman, R.;Scholefield, D.
通讯作者：
Scholefield, D.
内蒙古沙漠草原放牧羊的尿液和粪便对甲烷和二氧化碳通量的贡献
DOI：
10.5713/ajas.2011.11261
发表时间：
2012-02
期刊：
Asian-Australasian journal of animal sciences
影响因子：
--
作者：
Jiang Y;Tang S;Wang C;Zhou P;Tenuta M;Han G;Huang D
通讯作者：
Huang D
影响因子：
9.8
作者：
Bell, M. J.;Rees, R. M.;Chadwick, D. R.
通讯作者：
Chadwick, D. R.