By evaluating the fire resistance of native afforestation tree species in eastern Qinghai Province,this study clarifies the disparities in fire resistance and the application value of different species,providing a theoretical basis and practical reference for regional forest fire prevention and forestry ecological construction.This study focus on 14major native afforestation tree species in eastern region of Qinghai Province.The physicochemical properties and combustibility traits(moisture content,ignition point,calorific value,ash content,crude fat)of their different organs(leaves and branches)were determined.Utilizing the Analytic Hierarchy Process(AHP),a comprehensive fire resistance evaluation index model was established based on three dimensions:physicochemical combustion properties,bio-ecological characteristics,and afforestation economic traits.The comprehensive ranking of fire resistance performance of the 14 tree species was obtained in descending order as follow:Ulmus pumila,Caragana korshinskii,Tamarix chinensis,Populus tomentosa Carrière,Populus davidiana,Salix oritrepha,Cotoneaster multiflorus,Picea crassifolia,Betula albosinensis,Sorbus pohuashanensis,Pinus tabuliformis,Potentilla glabra,Sabina przewalskii,Hippophae rhamnoides.The results showed that among the tree species in eastern Qinghai Province,Ulmus pumila is a native afforestation tree species with strong fire-resistant,wide adaptability,and economic applicability,followed by Caragana korshinskii,Tamarix chinensis,Populus tomentosa,Populus davidiana,etc.Pinus tabuliformis,Potentilla glabra,Sabina przewalskii,and Hippophae rhamnoides are not suitable for ultivation as pure stands for fire prevention.The study screened out native fire-resistant tree species suitable for the local area,providing theoretical support for considerations related to forest fire prevention in regional afforestation.