<p>Biogenic volatile organic compounds (BVOCs) are key precursors of ozone and secondary organic aerosols, and their emissions are highly sensitive to climate and land cover changes. To project how these changes would jointly shape future BVOC emissions and their ozone formation potential (OFP) in the Yangtze River Delta (YRD), this study quantified them during the summers of 2020 and 2030 under the CMIP6 SSP2-4.5 and SSP3-7.0 scenarios. This was done by using the Weather Research and Forecasting version 3.9 (WRF v3.9) model coupled with the Model of Emissions of Gases and Aerosols from Nature version 2.1 (MEGAN v2.1). Factor separation analysis was applied to isolate the effects of future climate and land cover changes. Total BVOC emissions in 2020 reached 907,900 tons, with isoprene contributing 43.23%. By 2030, total BVOC emissions increased to 1,532,800 tons under SSP2-4.5 and 1,792,700 tons under SSP3-7.0, corresponding to growth rates of 68.83% and 97.46%. The contribution of isoprene also rose substantially, with its share of total emissions increasing to 51.64% (SSP2-4.5) and 52.60% (SSP3-7.0) by 2030. Under SSP2-4.5, land cover change was the primary driver, accounting for 46.23% of the integrated-scenario emission increase. Under SSP3-7.0, climate change dominated, contributing 45.15%. A synergistic effect was observed between the two drivers. Quantitatively, the emission increases in the climate-only and land cover-only scenarios, when summed, accounted for only 86.62% (SSP2-4.5) and 82.03% (SSP3-7.0) of the increases in the integrated scenarios. The corresponding remainders (13.38% and 17.97%, respectively) were attributable to their synergy. OFP was projected to intensify markedly by 2030, with isoprene contributing over 70%. These findings highlighted the strong joint influence of climate and land cover changes on future BVOC emissions.</p>