By collecting 11 forage species from the desert steppe of Siziwang Banner， Ulanqab City， Inner Mongolia， we separately determined and calculated their crude protein， ether extract， crude ash， neutral detergent fiber， acid detergent fiber， total digestible nutrients， dry matter intake， dry matter digestibility， relative feeding value， and relative forage quality. A comprehensive evaluation of the nutritional value of different forages was conducted. The study employed a combined approach utilizing the CRITIC objective weighting method and the GRA-TOPSIS comprehensive evaluation model. The results of the study showed that the three forage grasses in the grass group， in descending order of nutritional value， were Leymus chinensis > Stipa breviflora > Cleistogenes songorica； the five forage grasses in the shrub and semi-shrub group， in descending order of nutritional value， were Bassia prostrata > Krascheninnikovia ceratoides > Caragana microphylla > Artemisia frigida > Caragana stenophylla； and the three forage grasses in the weedy group， in descending order of nutritional value， were Phlomoides umbrosa > Convolvulus ammannii > Astragalus membranaceus.

Desert Steppe  /  Forage nutrition  /  CRITIC assignment  /  GRA-TOPSIS  /  Correspondence analysis