| 中国动物源CH4排放空间分布和时间变化研究 |
| 摘要点击 3295 全文点击 2868 投稿时间：2010-08-12 修订日期：2010-11-02 |
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| 中文关键词 甲烷排放 牲畜 空间分布 时间变化 中国 |
| 英文关键词 methane emission livestock spatial distribution temporal dynamics China |
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| 中文摘要 |
| 将IPCC国家温室气体清单指南（2006）用于估算动物源CH4排放的方法2和GIS空间化数据库技术结合，以2004年全国各县级行政单位的畜牧统计数据和1 km×1 km土地利用栅格数据为主要数据源，系统地估算了中国大陆当年动物源CH4排放量（包括消化道CH4排放和粪便管理系统CH4排放两部分），并分析了其空间分布和季节变化特征.估算结果表明,2004年中国大陆动物源CH4排放量为12.79×106 t，其中动物消化道排放11.64×106 t，不确定性范围为±35.10%，动物粪便排放1.16×106 t，不确定性范围为±14.58%.排放量较大的地区集中在黄河流域，主要是黄河下游和华北平原，另外西南地区也是排放量较大的地区.中国动物源CH4排放总量和消化道CH4排放的时间变化特征不明显，而动物粪便管理系统CH4排放时间变化呈现出：夏季最大，春季和秋季次之，冬季最小. |
| 英文摘要 |
| Combining Tier 2 method presented in the guidelines of the Intergovernmental Panel on Climate Change (IPCC, 2006) with GIS techniques, a primary estimation of methane emission from livestock in 2004 (including emission from enteric fermentation and manure management system) was made with county-level livestock statistics and 1 km×1 km raster data. The results indicated that the methane emission from livestock was 12.79×106 tons totally in China, and 11.64×106 tons from enteric fermentation and 1.16×106 tons from manure management. The uncertainties of the methane emission from enteric fermentation and manure management were ±35.10% and ±14.58% respectively. The high methane emission was at Yellow River basin, especially in the lower reaches of the Yellow River and the North China Plain. The Southwestern China also can be found with high emission. In accordance with the seasonal temperature changes, the temporal variation of manure management emission was estimated the highest in summer and the lowest in winter. |
