Impacts of climate change on hulless barley security in plateau region: A case study of Lhasa River basin in Tibet, China

Abstract Accurate understanding of the impacts climate change on hulless barley and river in Lhasa River Basin is great significance to food security water resources management plateau region. It important explore relationship between under background for comprehensive coordinated development agriculture conservancy. Based Google Earth Engine (GEE) cloud computing platform, Random Forest algorithm was used obtain spatio‐temporal variation from 2010 2020. The overall accuracy Kappa coefficient classification results were 89.54% 85.96%, respectively. average area Normalized Difference Vegetation Index (NDVI) 2020 178.46 km 2 0.69, increase accumulated precipitation, number precipitation days, dew point temperature (ADPT) wind speed (AWS) promoted growth barley, with NDVI significant increasing rate 0.0173 ( R = 0.764, p < 0.001). combined effects human activities (construction conservancy facilities mining activities), ADPT AWS resulted a decrease (decreasing rate: 10.8682 /year, 0.01) during 2010–2020. There negative correlation 0.722, driven by factors. changes gravity center consistent, both shifted northeast direction. These provide scientific resource. land cover maps long time series high spatial resolution drawn. Our study verified relevance as well internal area. Furthermore, we explored interrelation relationships among