“The research team designed a vegetation drought response (VDR) module to address the challenge of monitoring subtropical vegetation drought. The module identified the vegetation drought process (VDP), defined the vegetation drought threshold (VDT), and jointly constructed a PCVDM model. "In relatively high altitude areas, vegetation growth and development are stimulated by continuous warming, while in relatively low altitude areas, vegetation shows a trend of greening due to differences in water holding capacity of rock slopes and the comprehensive impact of continuous warming leading to an increase in surface evapotranspiration rate. In fact, the vegetation is under strong drought stress, that is, while the overall vegetation is continuously greening, its drought is also constantly increasing." This provides a reference for subtropical vegetation drought monitoring and carbon sink research.”