2000一2020年中国种植业温室气体排放评估及变化

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中图分类号：X71 文献标志码：A 文章编号：2095-6819（2025）06-1493-12 doi：10.13254/j.jare.2025.0227

Assessment of greenhouse gas emissions and changes in China's crop farming sector，2oo0 to 2020 LI Yuan1，²， ZUO Lijun1*

（1.AerospaceInfoationResearchIstitute，CinseAcadeyofSiences，BeijingOo，China;2UiversityofCinsecdef Sciences，Beijing 100049，China）

Abstract：Agricultureranksasthesecond-largestglobalsourceof grenhousegas（GHG）emisions.Evaluatingthetotalcarbon emisions，structuralompositionndspatiotemporalpatensholdscriticalsignificanceforpromotingsustainableagicultureand achieving emission reduction targets.This study established a GHG（ CO2 ，CH4，N2O）accounting framework for crop production through literatureaalysisdCieyethodolstemalatifngprovial-velsiosio，0，de analyzingemisstrs，oueuctusndsatialacs.Keydgsealedniitalieasefollodyclini's agricultural GHG emissions from 2000 to 2020， with CC 12 contributing the largest proportion（38.39%-45.48 % ）.Rice cultivation， nitrogen fertlzerpodcodfmagtoitedpaysosucagat.84loicosCi （ 77.52% oftotalemissions），theirrelativecontribution had gradually decreased.Provincial emissionsexhibited minimal temporal fluctuationbutsubstantialspatialheterogeeityemonstatingaloworthghouth，lowestigastdistributiopaeueto dispariesinculturaldevelopmetlevelsndopingpreferece，sionompososidmongprovces，ategdit fourtypes：iciven，rognfertilieependent，acheryntesivendlandusangesios.Inouteios，CH ⋅4 emisions fromricecultivationdominatedgrenhousegassources，whileinthenorthwest，agricultural machineryuseconstitutedthe primaryeisiooue.Tmpoallisssispceaedeaditraldthios，ecdios andnortheast，andaisingtrendintenorthwestTheresultsanprovideeferenceforpolicymakinginrespctofcabonemisiosin China's crop planting. Keywords：crop farming; greenhouse gas; emissions estimation; spatiotemporal variation; emission reduction strategy

联合国政府间气候变化专门委员会（IPCC）第六次评估报告显示，2010一2019年全球平均气温较工业化前上升 1.07∘C ，主要归因于人类活动（自然影响仅 -0.1～0.19C ）。（剩余24475字）