A dataset of spatial distribution of highland barley planting area in Qinghai-Tibet Plateau (2019)

Highland barley is the dominant crop that can best adapt to the natural environment of the Qinghai-Tibet Plateau with high cold, hypoxia and strong radiation. In order to obtain the spatial distribution of the highland barley planting area on the Qinghai-Tibet Plateau, a highland barley extraction method based on multi-element fusion of partition classification was adopted. First, according to agricultural partitions, the range of highland barley map spots was limited by altitude, slope, precipitation and hydrological factors. Secondly, the optimal band for highland barley extraction was optimized by OIF index partition. Finally, the object-oriented classification method was used to extract the planting area of highland barley on the Qinghai-Tibet Plateau. The overall accuracy is 91.74% and Kappa coefficient is 0.83 through the accuracy test of confusion matrix. From the extraction results of highland barley on the Qinghai-Tibet Plateau, the total planting area of highland barley is about 2.74×105 ha. The acquisition of this result improves the understanding of the existing highland barley spatial distribution pattern from the administrative unit scale to the patch scale, and provides data reference for optimizing the spatial distribution pattern of highland barley planting in the future.