山西省农业碳排放总量及时空特征研究

随着大气中温室气体浓度的不断上升,气候变暖已成为现阶段最迫切的环境问题。以2005—2010山西省农业统计资料和统计年鉴为基础数据,结合研究区内的问卷调查和实地走访,对山西省农业碳排放总量、时空分布特征、构成比等进行研究。结果表明:(1)山西省2005—2010年农业碳排放总量呈逐年递增趋势,年平均增长率为5.36%;(2)山西省各地市碳排放总量较大的3个市是运城、临汾、晋中市,从单位面积排放强度来看太原、晋中、长治的排放强度位列前三;(3)山西省农业碳排放的分布格局呈带状分布,自然、经济的差异都对其碳排放量产生一定影响;(4)从农业碳排放各部分所占比例来看,农田秸秆露天焚烧的碳排放量占到整个农业碳排放总量的50%以上,其次是化肥施用导致的碳排放。研究结果可以为山西省农业温室气体减排提供数据支持和对策建议。

Agricultural Carbon Emission and Spatiotemporal Distribution in Shanxi Province

With the increase of greenhouse gases (GHG) concentration, global warming becomes an urgent environmental problem. The authors studied the total amount, spatiotemporal distribution and constituent ratio of agricultural carbon emission in Shanxi Province based on agricultural statistical dataset and statistical yearbook, combined with questionnaire survey and field interview. The results showed that: (1) the total amount of agricultural carbon emission increased year by year from 2005 to 2010, with the an annual growth rate of 5.36%; (2) Yuncheng, Linfen and Jinzhong generated more carbon emission than other cities, and the emission intensity in unit area was higher in Taiyuan, Jinzhong and Changzhi; (3) the agricultural carbon emission showed zonal distribution and the difference of nature and economy had certain effect on it; (4) the open burning of straws accounted for more than 50% of the total carbon emissions, and then was fertilizer application. The results could provide data support and measures for agricultural carbon emission mitigation in Shanxi Province.