Table S4 The sources of historical road network maps Type Represented Year of Name of map of Scale Source Included levels of road decade map-making map First class road (= Highway) CHINA Topographic Maps Compiled by The Army Service(LU), 1950s Papery 1958-1960 1:250000 Second class road (= Simply-built highway) (Hainan Island part) Corps of Engineers, U.S. Army Third class road (= Cart and Rural road) Topographical maps of Hainan Compiled by Chinese People's Highway, Simply-built highway, 1970s Papery 1975 1:50000 (in Chinese) Liberation Army Cart road and Rural road National Geomatics Center of China, Road network of China Expressway, Highway, Simply-built 1990s Digital 1995 1:50000 available from (Hainan Island part, in Chinese) highway, Cart road and Rural road http://ngcc.sbsm.gov.cn. Compiled by Traffic Way Trunk road network of Hainan Administration of Hainan Province, Expressway, Highway, Simply-built 2010s Digital 2013 1:350000 (in Chinese) available from highway, Cart road and Rural road http://www.hainangl.cn/
Table S4 The sources of historical road network maps Represented decade Name of map Type of map Year of map-making Scale Source Included levels of road 1950s CHINA Topographic Maps (Hainan Island part) Papery 1958-1960 1:250000 Compiled by The Army Service(LU), Corps of Engineers, U.S. Army First class road (= Highway) Second class road (= Simply-built highway) Third class road (= Cart and Rural road) 1970s Topographical maps of Hainan (in Chinese) Papery 1975 1:50000 Compiled by Chinese People's Liberation Army Highway, Simply-built highway, Cart road and Rural road 1990s Road network of China (Hainan Island part, in Chinese) Digital 1995 1:50000 National Geomatics Center of China, available from http://ngcc.sbsm.gov.cn. Expressway, Highway, Simply-built highway, Cart road and Rural road 2010s Trunk road network of Hainan (in Chinese) Digital 2013 1:350000 Compiled by Traffic Way Administration of Hainan Province, available from http://www.hainangl.cn/ Expressway, Highway, Simply-built highway, Cart road and Rural road
04_revised_Supplemental_data.docx