Figure 2. Locations of biodiversity sampling sites for different land-cover types in south-central Sichuan.

Each polygon is a county, with the text inside indicating its name. Counties in bold and colour are where field surveys were conducted, with elevation displayed in a gradient of grey shades using the Digital Elevation Model (DEM) data courtesy of the Land Processes Distributed Active Archive Center⁷⁴. Dot and cross signs represent sampling sites for birds (point count stations) and bees (trapping plots), respectively, with different colours representing different land-cover types: CL (yellow), cropland; NF (dark green), native forest; EC (light green), eucalyptus monoculture; BB (blue), bamboo monoculture; JC (red), Japanese cedar monoculture and MF (purple), mixed GFGP forest. Administrative borders for individual counties are courtesy of the National Geomatics Center of China⁷³. Nature publications remain neutral with regard to contested jurisdictional claims in published maps.