山东省农田生态系统碳源、碳汇及其碳足迹变化分析

发布时间：2018-06-24 18:31

本文选题：农田生态系统 + 碳源　；参考：《中国农业大学学报》2016年07期

【摘要】：依据2002—2013年山东省17地市农业投入、播种面积以及作物产量等统计数据,对全省各地市农田生态系统进行碳源、碳汇估算,从中分析其变化规律,并探讨造成碳源、碳汇时空变化的影响因素。结果表明:山东省农田系统具备较强的碳汇能力,碳吸收量明显高于碳排放量,两者的总量之比为4.32∶1;碳吸收量和碳汇量呈增加趋势,碳排放量和碳足迹呈降低趋势;农田生态系统表现出较大的碳生态盈余,碳足迹占同期耕地面积的比值呈现降低趋势,2002年为27.71%,2013年为20.96%;17地市之间单位面积碳汇量和单位面积碳足迹存在明显差异,2013年单位面积碳汇量最高的为德州市(6.20t/hm~2)、最低为威海市(3.02t/hm~2),单位面积碳足迹最高的威海市为0.26hm~2/hm~2、最低的泰安市为0.08hm~2/hm~2。
[Abstract]:Based on the statistical data of agricultural input, sown area and crop yield in 17 cities of Shandong Province from 2002 to 2013, the carbon sources and carbon sinks of farmland ecosystem in various cities of Shandong Province were estimated, and the changing rules of carbon sources were analyzed, and the causes of carbon sources were discussed. Influencing factors of carbon sequestration in time and space. The results show that the farmland system of Shandong Province has a strong carbon sink capacity, the carbon absorption is obviously higher than the carbon emission, the ratio of the total amount of carbon absorption and carbon sink is 4.32: 1, the carbon absorption and carbon sink are increasing, and the carbon emission and carbon footprint are decreasing. The farmland ecosystem showed a large carbon ecological surplus. The ratio of carbon footprint to cultivated land in the same period showed a decreasing trend, which was 27.71% in 2002, 20.96% and 20.96% in 2013. In 2013, the carbon sink per unit area and carbon footprint per unit area were the highest in Dezhou City (6.20t/hm~2) and the lowest in 2013. In Weihai City (3.02t/hm~2), the highest carbon footprint per unit area in Weihai City is 0.26hmmrhmmf2, and the lowest in Taian City is 0.08hmmmmmmmmmt2hmrmmmt2.
【作者单位】：临沂大学资源环境学院;山西大学黄土高原研究所;
【基金】：山东省自然科学基金项目(ZR2015DL002) 临沂市科技惠民计划(2015HM004) 国家星火计划(2015GA740064)
【分类号】：S181

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