基于生命周期评价方法的传统水稻和有机水稻种植系统碳足迹分析

一一以江苏省宜兴地区为例

打开文本图片集

中图分类号：S511 文献标识码：A 文章编号：1000-4440（2025）11-2200-09

Abstract：Rice is the most important food crop，and is alsooneof themajor sources for grenhousegasemisson.This studyfocusedonthetraditionalandorganicricecultivationinYixingofJiangsuprovinceofChinaastheresearchobject.The functional units were 1kg rice yield and 1hm2 rice area，and the life cycle assessment method was used to calculate the greenhousegasemisionpotentialofgriculturalinputs，landprepaation，transplanting，fieldproductionandarvestingprcese. TheresultsshowedthatthegreenhousegasemissionduringtraditionalricecultivationinYixingofJiangsu provincewas higher than that during organic rice cultivation.Under different functional units， CH4 contributed the most to greenhouse gas emission inboth traditional and organic rice systems.When thefunctional unit was 1kg ofrice，the proportions of CH l4 emissions from the field were 91.82 % and 91.86 % ，respectively.Inaddition， scenario simulation results indicated that compared to returning 100% ofstraw to the field，thepotential for CH4 and N2Oemissions decreased during traditional rice cultivation. The greenhouse gas emission potential of organic rice systemdecreasedastheproportionofcowmanureapplication increased.Theresults inthisstudymayprovideacertainreference basis for carbon accounting in the process of rice planting and rice straw utilization in Jiangsu province.

Key words：rice；life cycle assessment；greenhouse gas emission；carbon footprint

农业是全球范围内由人类活动带来的温室气体排放总量的主要来源[1]。（剩余13513字）