Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia

NWIPB OpenIR

	Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia
	Ma, Xiuzhi ; Wang, Shiping ; Wang, Yanfen ; Jiang, Gaoming ; Nyren, Paul
	2006-09-01
发表期刊	NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH ; Ma Xiuzhi,Wang Shiping,Wang Yanfen, Jiang Gaoming,Nyren Paul.Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia.NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH,2006,49(3):285-297
摘要	Excrement patches of grazing animals play an important role in greenhouse gas (GHG) fluxes due to the high nitrogen (N) and available carbon (C) deposited in small areas, but little information is available for the effect of excrement in the Inner Mongolian grassland (43 26 degrees N, 116 degrees 40'E). To elucidate the effect of grazing sheep urine, fresh dung and compost on fluxes of methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O), a short-term field study (65 days) was carried out in the typical grassland of Inner Mongolia with the optimised closed chamber/GC technique. Compared with the control, cumulative net CH4 consumption decreased 36, 31, and 18% from urine, fresh dung, and compost plots, respectively; net CO2-C output increased by 6.5, 1.5, and 1.2% from urine, fresh dung, and compost treated soil, respectively; about three times as much N2O-N was emitted from urine and the fresh dung treatments during 65 days. Nitrous oxide emission was positively correlated with CO, emission (R = 0.691, P < 0.01) and water-filled pore space (R = 0.698, P < 0.01). The percentages of N2O-N loss of applied-N were 0.44 and 1.05% for urine and fresh dung, respectively. Our results suggest that in autumn in the degraded grassland of Inner Mongolia, the effect of sheep excrement may be ignored when evaluating the total GHG emissions.; Excrement patches of grazing animals play an important role in greenhouse gas (GHG) fluxes due to the high nitrogen (N) and available carbon (C) deposited in small areas, but little information is available for the effect of excrement in the Inner Mongolian grassland (43 26 degrees N, 116 degrees 40'E). To elucidate the effect of grazing sheep urine, fresh dung and compost on fluxes of methane (CH4), carbon dioxide (CO2), and nitrous oxide (N2O), a short-term field study (65 days) was carried out in the typical grassland of Inner Mongolia with the optimised closed chamber/GC technique. Compared with the control, cumulative net CH4 consumption decreased 36, 31, and 18% from urine, fresh dung, and compost plots, respectively; net CO2-C output increased by 6.5, 1.5, and 1.2% from urine, fresh dung, and compost treated soil, respectively; about three times as much N2O-N was emitted from urine and the fresh dung treatments during 65 days. Nitrous oxide emission was positively correlated with CO, emission (R = 0.691, P < 0.01) and water-filled pore space (R = 0.698, P < 0.01). The percentages of N2O-N loss of applied-N were 0.44 and 1.05% for urine and fresh dung, respectively. Our results suggest that in autumn in the degraded grassland of Inner Mongolia, the effect of sheep excrement may be ignored when evaluating the total GHG emissions.
文献类型	期刊论文
条目标识符	http://210.75.249.4/handle/363003/20246
专题	中国科学院西北高原生物研究所
推荐引用方式 GB/T 7714	Ma, Xiuzhi,Wang, Shiping,Wang, Yanfen,et al. Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia[J]. NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH, Ma Xiuzhi,Wang Shiping,Wang Yanfen, Jiang Gaoming,Nyren Paul.Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia.NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH,2006,49(3):285-297,2006.
APA	Ma, Xiuzhi,Wang, Shiping,Wang, Yanfen,Jiang, Gaoming,&Nyren, Paul.(2006).Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia.NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH.
MLA	Ma, Xiuzhi,et al."Short-term effects of sheep excrement on carbon dioxide, nitrous oxide and methane fluxes in typical grassland of Inner Mongolia".NEW ZEALAND JOURNAL OF AGRICULTURAL RESEARCH (2006).