西南地区擢荒地复耕的粮食增产潜力与碳减排策略

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中图分类号：X71 文献标志码：A 文章编号：2095-6819（2025）06-1425-09 doi：10.13254/j.jare.2025.0495

Grain yield increase potential and carbon emisson reduction strategies for abandoned cropland recultivation in southwest China

XU Zhongyu， YIN Changbin，LIFuduo

（StateKeyLaboratoryofEficientUtlizationofableLandinCina/InstituteofAgiculturalResourcesandRegionalPlanngCine AcademyofAgricultural Sciences，Beijing1Ooo81， China）

Abstract：Theabandonmentofcroplandleads toresourcewaste，recultivationofabandonedcroplandstandsasanefectivemeasureto enhancegrain productioncapacity.Fousing onsouthwest China，thisstudyemployedremote sensinganalysisandscenariomodeling to evaluatebothgainyieldpotentialandcarbonemissosfromabandonedroplandrecultivationTheesultsshowedthatthetotalareaof abandoned land in southwest China was approximately 8.03×1 0∘hm2 ，mainly distributed in the Yunnan-Guizhou region and southern Gansu. Among hese，trassabetigiczesgpotatatdtera3740， 0s ， （20 4.909×10∘ ，and 2.566×103hm2 ，respectively.Recultivation could achieve significant production capacity and demonstrated significant productionpotetial.eobedyeldpotetialfrsringadutupotatsacd8910tacoutigfappoxiately%f China's total potato production.Production capacities for rice，maize，and wheat were projected at 2.47×10∘ 2.24×10∘ ，and 6.73×109 L respectively. Carbon emission analysis revealed that rice cultivation generated the highest emisions（1.77×10' kg CO 12 eq）. Implementing mitigation measures could reduce emissions by approximately 8.66 ×108 kgCC 12 -eq.Recultivation crop species should be selected based on localconditions，andkycarbon-reductiontchologiesincludingaleratewetig-dyingforiceandlowreleasefertlirsshouldbe simultaneouslypromoedEstablsngsupportiveolicysystesyalseecssrytosyegisticallychievegainproductioniase and carbon reduction targets.

Keywords：abandonedcroplandrecultivation;southwestChina;grainproduction potential;carbonemisionreductionapproach

耕地擢荒加剧了土地趋紧形势，造成耕地资源浪费。（剩余21995字）