摘要
湖南省农田生态系统是高产农业碳平衡研究的模板,其碳足迹分析对农业供给侧结构性改革具有重要参考作用。基于2001~2014年湖南省农田生产投入、作物产量等数据,运用碳足迹分析方法对湖南省农田生态系统的碳排放、碳吸收以及碳足迹进行计算。结果如下:过去13年里,湖南省农田生态系统的碳排放逐年增加,增幅和年平均增长率分别为28.33%和1.85%;碳吸收呈波动式增加,增幅和年平均增长率分别为35.50%和2.36%;水稻和蔬菜的碳吸收量远大于其他农作物,年均合计比重为83.20%;碳足迹先增加后减少,2001年为31.74×10~4hm^2,2006年增加到34.46×10~4hm^2,2014年减少到31.56×10~4hm^2;湖南省农田生态系统始终处于碳生态盈余且呈先减少后增加的趋势;分析2014年的区域农田碳足迹,常德市最大,为4.52×10~4hm^2,张家界市最小,为0.89×10~4hm^2,二者相差5.08倍;2014年湖南省区域碳足迹水平分为三类:高碳足迹地区(常德市)、中碳足迹地区(岳阳市、衡阳市、邵阳市、益阳市、郴州市、永州市、怀化市及湘西州)和低碳足迹地区(长沙市、株洲市、湘潭市、张家界市及娄底市)。
The farmland ecosystem in Hunan is a template about carbon balance analysis of high - yield agriculture and its carbon footprint analysis plays a significantly referenced role in agricultural supply side structural reform. Based on statistic data about agricultural production investment and crop field during 2001 to 2014 in Hunan, carbon emission, carbon absorption and carbon footprint of farmland ecosystem in Hunan were estimated by the carbon footprint analysis method. The results are as follows： Over the past 13 years, carbon emission from farmland ecosystem in Hunan were increased, its increased rate and growth rate per annum are 28. 33% and 1. 85% Respectively. Carbon absorption increased fluctuant, its increase rate and growth rate per annum are 35. 50% and 2. 36% , respectively. Carbon absorption amounts of vegetable and rice are much higher than that of other crops,accounting for 83. 20% of total carbon absorption. Carbon footprint has increased at first and then decreased, changing from 31. 74 ×10^4hm^2 in 2001 to 34. 46×10^4hm^2 in 2006, and then to 31. 56 ×10^4hm^2 in 2014. Farmland ecosystem in Hunan was being in carbon ecological surplus,and it decreased at first and then increased. Compared with regional carbon footprint in 2014, Changde city is higher （4. 52×10^4hm^2） and Zhangjiajie city is lower （0. 89×10^4hm^2） ,its difference is more than 5 times. The regional carbon footprint in Hunan in 2014 could be divided in 3 levels：high carbon footprint area （Changde city） ,middle carbon footprint area （ Yueyang city, Hengyang city,Shaoyang city,Yiyang city,Chenzhou city,Yongzhou city,Huaihua city and Xiangxi state） and low carbon footprint area （Changsha city9Zhuzhou city9Xiangtan city9Zhangjiajie city and Loudi city）.
出处
《作物研究》
2016年第6期666-673,共8页
Crop Research
基金
农业公益性行业科研专项(201203081-2)
中国工程院咨询研究项目(2012-XY-09
2014-XY-33)
关键词
农田生态系统
碳足迹
碳排放
碳吸收
湖南
farmland ecosystem
carbon footprint
carbon emission
carbon absorption
Hunan
