N(2)O fluxes from the native and grazed semi-arid steppes and their driving factors in Inner Mongolia, China
文献类型：SCI/SSCI论文
| 作者 | Liu X. R. ; Dong Y. S. ; Qi Y. C. ; Li S. G. |
| 发表日期 | 2010 |
| 关键词 | Grazing Nitrous oxide Rainfall Seasonal variation Semi-arid steppe Soil water content Temperature nitrous-oxide emissions colorado shortgrass steppe grassland soils ch4 denitrification pasture no netherlands ecosystem methane |
| 英文摘要 | This paper presents results of 2 years (from January 2005 to December 2006) of measurement of N(2)O fluxes from the native and grazed Leymus chinensis (LC) steppes in Inner Mongolia, China using the static opaque chamber method. The measurement was at a frequency of twice per month in the growing season and once per month in the non-growing season. In addition, the possible effect of water-heat factors on N(2)O fluxes was statistically analyzed. The results indicated that there were distinct seasonal patterns in N(2)O fluxes with large fluxes in spring, summer, and autumn but negative fluxes in winter. The annual net emission of N(2)O ranging from 0.24 to 0.30 kg N(2)O-N ha(-1) and from 0.06 to 0.26 kg N(2)O-N ha(-1) from the native and grazed LC steppe, respectively. Grazing activities suppressed N(2)O production. In the growing season, soil moisture was the primary driving factor of N(2)O fluxes. The high seasonal variation of N(2)O fluxes was regulated by the distribution of effective rainfall, rather than precipitation intensity. Air temperature or soil temperature at 0, 5, and 10 cm depth was the most restricting factor of N(2)O fluxes in the non-growing season. |
| 出处 | Nutrient Cycling in Agroecosystems |
| 卷 | 86 |
| 期 | 2 |
| 页 | 231-240 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1385-1314 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/23410]  |
| 专题 | 地理科学与资源研究所_历年回溯文献 |
| 推荐引用方式 GB/T 7714 | Liu X. R.,Dong Y. S.,Qi Y. C.,et al. N(2)O fluxes from the native and grazed semi-arid steppes and their driving factors in Inner Mongolia, China. 2010. |
入库方式： OAI收割
来源：地理科学与资源研究所
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