Appendix 1 Eco-region descriptions and fragmentation. Codes are those used in Figure 3. Ecoregion Code Mean Meff (FG3 km2) 20% Least Fragmented Counties (km2) 20% Most Fragmented Counties (km2) Climatic Zone Ecoregion Description IIIB1 147 220 89 Warmtemperate zone, sub-humid region Deciduous broadleaf forest and cultivated vegetation region, hilly area of central Shandong IIIA1 154 381 45 Warmtemperate zone, humid region Deciduous broadleaf and cultivated vegetation region, hilly land of East Liaoning and Jiaodong IIIB2 180 427 54 Warmtemperate zone, sub-humid region Cultivated vegetation region of China’s Huabei Plain IVA1 585 1603 96 North-subtropical Zone, humid region Evergreen, deciduous broadleaf & cultivated vegetation region in central & lower reaches of Yangtze Plain, Dabieshan Mountains IIIB3 596 1619 98 Warmtemperate zone, sub-humid region Deciduous broadleaf forest region, China’s Huabei mountainous area VIA2 981 2776 131 South subtropical Zone, humid region Evergreen broadleaf & cultivated vegetation region in hilly plains of Fujian, Guangdong & Guanxi VA1 1023 2659 136 Middile subtropical Zone, humid region Evergreen broadleaf and cultivated vegetation region in JIangnan hilly and basin areas VA2 1128 2400 210 Middle subtropical Zone, humid region Evergreen broadleaf region in Zhejiang, Fujian and Nanling Mountain IIA1 1280 2744 533 Medium temperate zone, humid region Sanjiang Plain wetland region IIIB4 1530 5001 146 Warmtemperate zone, sub-humid region Deciduous broadleaf forest region and cultivated vegetation region in Fenhe river and Weihe basins VIIA2 1585 5725 105 Margin tropical Zone, humid region Semi-evergreen seasonal rainforest in the mountainous and hilly Leizhou and Hainan VA3 2049 5300 419 Middle subtropical Zone, humid region Evergreen broadleaf region in Guizhou, Hunan highland and mountainous areas IIB1 2084 7484 174 Medium temperate zone, sub-humid region Forest and steppe region in the central Songliao Plain IIIC1 2237 6567 373 Warmtemperate zone, semi-arid region Steppe Region in the central and north Loess plateau IIA2 2997 11190 213 Medium temperate zone, humid region Xiaoxing’anling & Changbai Mountainous area, coniferous forest region VA4 3679 16863 98 Middle subtropical Zone, humid region Evergreen broadleaf & cultivated vegetation region in Sichuan Basin VIIIA1 3727 8770 704 Middle tropical Zone, humid region Seasonal rainforest and rainforest in South Hainan, east and midddle Archipelagos. IIA3 3807 14963 312 Medium temperate zone, humid region Broadleaf and coniferous mixed forest region in Piedmont platform of east Songliao Plain IVA2 3942 12836 830 North-subtropical Zone, humid region Evergreen & deciduous broadleaf mix region in Qin-Ba Mountainous Area IIC3 4429 14214 384 Medium temperate zone, semi-arid region Steppe Region in the east of Inner Mongolia Highland VIIA3 5200 9547 1268 Margin tropical Zone, humid Seasonal rainforest and rainforest in Xishuangbana region Mountainous areas. VIA3 5593 15364 907 South subtropical Zone, humid region Evergreen broadleaf and pine forest region of sub-mountain valley incentral and south Yunan IIC1 5753 14260 926 Medium temperate zone, semi-arid region Steppe Region in the west of Liaohe River Plain IIC2 6180 17175 614 Medium temperate zone, semi-arid region Steppe Region in the South section of Daxing’anling Mountain IID1 7222 20555 1312 Medium temperate zone, arid region Desert steppe region of Ordos & west Inner Mongolia Highland IIC4 9094 11823 5307 Medium temperate zone, semi-arid region Hulunbuir Plain steppe region VA5 9494 37656 576 Middle subtropical Zone, humid region Evergreen broadleaf and pine forest region of Yunan Plateau IIB2 13475 20948 7600 Medium temperate zone, sub-humid region Steppe and forest region in the mountainous central section of Daxing’anling range HIIC1 16770 52068 1808 Plateau temperate zone,semi-arid region East Qinhai and Qilian mountain, high mountain and basin coniferous forest and steppe region IIB3 20277 49596 7844 Medium temperate zone, sub-humid region Forest and meadow region, in the west side of Daxing’anling’s northern section IA1 30082 55180 8332 Cold temperate zone, humid region North Daxing’anling deciduous coniferous forest region IID2 32175 89579 2383 Medium temperate zone, Desert region of Alex and Hexi arid region Corridor IID4 40757 71330 9528 Medium temperate zone, arid region Altay Mountain steppe and coniferous forest region IID5 46665 118542 9724 Medium temperate zone, arid region The desert, steppe and coniferous forest region of Tianshan Mountain HIIC2 47132 152013 10047 Plateau temperate zone, semi-arid region South Tibet Plateau, high mountain and valley shrubsteppe region HIIA/B1 50001 110081 11753 Plateau temperate zone, humid/subhumid region West Sichuan and East Tibet plateau, deep valley and high mountain, coniferous forest region IID3 53374 147219 5634 Medium temperate zone, arid region Jungar Basin desert region HIB1 93194 292752 14830 Plateau subcold zone, subhumid region Guoluo, Naqu plateau alpine shrub-meadow region VA6 97638 152293 24936 Middle subtropical Zone, humid region Seasonal rainforest and evergreen broadleaf region in south wing of East Himalayas Mountain HIID1 161942 451358 14696 Plateau temperate zone, arid region Qaidam Basin desert region IIID1 166883 394561 23495 Warmtemperate zone, arid region Tarim Basin desert region HIC1 201576 593383 36655 Plateau subcold zone, semi-arid region Southern Qinhai plateau, wide valley, alpine meadow and steppe region HIID3 220498 562547 20517 Plateau temperate zone,arid region Ngali Mountainous desert region HIC2 276146 631453 38418 Plateau subcold zone, semi-arid region Qiangtang Plateau, lake basin alpine steppe region HIID2 326085 517536 83372 Plateau temperate zone,arid region North Kunlun Mountainous desert region HID1 473140 646214 243727 Plateau subcold zone, arid region Kunlun high mountain/plateau, alpine desert region