This readme file was generated on [2022-11-12] by [Zhi-Feng, Fan] Author Information Name: Zhi-Feng, Fan ORCID:https://orcid.org/0000-0002-1557-8871 Institution: Southwest Forestry University Address: Kunming, China Email: wave54@163.com The following items 1-6 are the original data (model input data) of this study. 1. Bioclimatic variables. Including current climate, paleoclimate and future climate data, a total of three documents.The future climate data consist of four GCMs and four SSPs in 16 files.The paleoclimatic data include two periods, LGM and MH, with three GCMs in each period and a total of six files. 19 bioclimatic variables were included in each period, each GCM, and each SSP. 1.1 File list in folder "current" bio1.asc, bio2.asc, bio3.asc, bio4.asc, bio5.asc, bio6.asc, bio7.asc, bio8.asc, bio9.asc, bio10.asc, bio11.asc, bio12.asc, bio13.asc, bio14.asc, bio15.asc, bio16.asc, bio17.asc, bio18.asc, bio19.asc. 1.2 Subfolders and file list in folder "future" First level subfolder: wc2.1_China_2.5m_2081-2100 Secondary subfolders: CMCC-ESM2, CNEM-CM6-1, EC-Earth-Veg, MPI-ESM1-2-HR Tertiary subfolders under each secondary subfolder: wc2.1_China_2.5m_"secondary subfolder name"_ssp126_2081-2100_asc, wc2.1_China_2.5m_"secondary subfolder name"_ssp245_2081-2100_asc, wc2.1_China_2.5m_"secondary subfolder name"_ssp370_2081-2100_asc, wc2.1_China_2.5m_"secondary subfolder name"_ssp585_2081-2100_asc. File list under each tertiary subfolder: bio1.asc, bio2.asc, bio3.asc, bio4.asc, bio5.asc, bio6.asc, bio7.asc, bio8.asc, bio9.asc, bio10.asc, bio11.asc, bio12.asc, bio13.asc, bio14.asc, bio15.asc, bio16.asc, bio17.asc, bio18.asc, bio19.asc. 1.3 Subfolders and file list in folder "paleoclimate" First level subfolder: wc1.4_China2.5m_LGM_divide10, wc1.4_China2.5m_MH_divide10 Secondary subfolders: (1)Folder "wc1.4_China2.5m_LGM_divide10": wc1.4_China_2.5m_LGM_CCSM4_19asc10, wc1.4_China_2.5m_LGM_MIROC-ESM_19asc10, wc1.4_China_2.5m_LGM_MPI-ESM-P_19asc10. (2)Folder "wc1.4_China2.5m_MH_divide10": wc1.4_China_2.5m_MH_CCSM4_19asc10, wc1.4_China_2.5m_MH_MIROC-ESM_19asc10, wc1.4_China_2.5m_MH_MPI-ESM-P_19asc10. File list under each secondary subfolder: bio1.asc, bio2.asc, bio3.asc, bio4.asc, bio5.asc, bio6.asc, bio7.asc, bio8.asc, bio9.asc, bio10.asc, bio11.asc, bio12.asc, bio13.asc, bio14.asc, bio15.asc, bio16.asc, bio17.asc, bio18.asc, bio19.asc. 2. Soil quality variables. Includes 7 variables. Flie list: sq1.asc, sq2.asc, sq3.asc, sq4.asc, sq5.asc, sq6.asc, sq7.asc. 3. Topographic variables. Includes 3 variables. Flie list: aspect.asc, elev.asc, slope.asc. 4. UV-B variables. Includes 6 variables. Flie list: uvb1.asc, uvb2.asc, uvb3.asc, uvb4.asc, uvb5.asc, uvb6.asc. 5. Vegetation variable. Flie list: veg.asc. 6. Polyspora_species_occurrence_data. Flie list: Polyspora_species_occurrence_data.csv The descriptions and explanations of the above 36 environment variables (19 bioclimatic variables, 7 soil quality variables, 3 topographic variables, 6 UV-B variables and 1 vegetation variable) were listed in Table S2.