基于能源与工料消耗的土地整治项目碳排放与碳足迹

通过构建土地整治项目所耗主要能源与工料的碳排放模型,对土地整治项目的碳排放进行测算,并通过碳足迹模型,对土地整治项目的碳足迹进行了定量分析。研究结果表明:(1)XM1-XM5能源与工料消耗的碳排放量分别为2 512.278、4 515.352、4 424.498、4 430.621和5 310.939 t,实施一个整治项目平均排放4 238.74 t碳。(2)XM1-XM5的碳排放强度分别为6.288、8.924、8.557、7.391和4.016 t/hm2,实施1 hm2的土地整治项目,平均排放7.035 t碳,通过优化项目实施规模能够控制其碳排放强度。(3)XM1-XM5的新增耕地碳排放量分别为202.93、904.88、1 721.59、1 691.08和247.60 t/hm2,通过土地整治项目新增1 hm2耕地,平均排放953.62 t碳。(4)XM1-XM5的能源与工料消耗碳足迹分别是77.921、128.967、146.830、127.148和198.546 hm2,均小于各自的实施规模,不存在碳足迹赤字现象,实施一个土地整治项目,其能源与工料消耗的碳足迹平均为135.883 hm2。

Carbon Emission and Carbon Footprint of Land Consolidation Projects Based on Energy and Material Consumption

By constructing carbon emission model of land remediation projects, this paper estimated the carbon emission of land consolidation projects, and analyzed the characteristics of its carbon footprint, the result shows that: (1)XM1-XM5 car-bon emissions by energy and material consumption were 2512.278, 4515.352, 4424.498, 4430.621 and 5310.939 t, implement a land consolidation projects would emit 4238.74 t carbon. (2)The carbon emissions intensity of XM1-XM5 were 6.288, 8.924, 8.557, 7.391 and 4.016 t/hm2, implement a hectare of land consolidation projects will emit 7.035 t carbon, by optimizing the implementation of scale can control the carbon emission intensity. (3)The newly increased cultivated land's carbon emissions of XM1-XM5 were 202.93, 904.88, 1721.59, 1691.08 and 247.60 t/hm2, increased a hectare of culti-vated land through land consolidation projects would emit 953.62 t carbon. (4)The carbon footprint of XM1-XM5 were 77.921, 128.967, 146.830, 127.148 and 198.546 hm2, which were less than the implementation of there scale. All of the projects did not exist carbon footprint deficit phenomenon, and the land consolidation project's average carbon footprint was 135.883 hm2.