华南农业大学学报2024，Vol.45Issue(6)：939-948,10.DOI:10.7671/j.issn.1001-411X.202406048
稻蛙生态种养模式碳足迹评价
Carbon footprint assessment of rice-frog coculture system
摘要
Abstract
[Objective]The carbon footprint of rice-frog ecological breeding model was systematically studied in order to provide scientific basis and optimization suggestions for the sustainable development of this model.[Method]The carbon footprints of traditional rice monoculture(TR),green rice-frog coculture(GF)and organic rice-frog coculture(OF)modes were evaluated by life cycle assessment.[Result]The carbon footprints per unit area of GF and OF were 5985.20 and 5632.99 kg CO2e·hm-2,which reduced by 5.98%and 11.51%compared with TR,the carbon footprints per unit profit decreased by 45.10%and 45.87%,and the carbon footprints per unit nutrient density decreased by 14.63%and 12.17%,respectively.GF and OF increased the net ecosystem economic benefits by above 50%,with 71.77%in GF.Compared with TR,the production of GF had no significant difference,while that of OF decreased by 16.73%.The CH4 emission of GF and OF increased by 58.13%and 131.18%,and the N2O emission decreased by 41.06%and 63.12%respectively.GF and OF had higher global warming potential and greenhouse gas emission intensity,among which the effect of OF was more significant.In GF and OF,the input of organic materials such as milk vetch,rapeseed cake and organic fertilizer showed net carbon fixation effect.The carbon footprint composition and sensitivity analysis showed that greenhouse gas emission(57.07%)and fertilizer application(32.88%)accounted for the highest carbon footprint composition of TR.The carbon emission and fixation of OF were higher than those of GF,and the CH4 emission and use of nylon protective net contributed the most to GF and OF.Uncertainty analysis showed that the carbon footprints per unit area of GF and OF were 5907.29 and 5647.25 kg CO2e·hm-2,respectively,which was lower than that of TR,and the coefficient of variation was less than 7.5%.[Conclusion]The rice-frog coculture modes(GF and OF)show a more significant carbon fixation and environment friendliness than TR mode,which provides a new scientific basis for green and low carbon development of rice industry in our country under the background of climate change.关键词
稻田生态系统/碳足迹/生命周期评价/绿色稻蛙/有机稻蛙Key words
Paddy field ecosystem/Carbon footprint/Life cycle assessment/Green rice-frog/Organic rice-frog分类
农业科技引用本文复制引用
丁玉凌,徐书含,刘文超,方凯凯,王玲玲,邹丽芳,曹林奎,沙之敏..稻蛙生态种养模式碳足迹评价[J].华南农业大学学报,2024,45(6):939-948,10.基金项目
上海市水稻产业体系项目(沪农科产字(2022)第3号) （沪农科产字(2022）
