Figure 2

Geographic distribution of hotspots identified by (a) SR, (b) (CWE, (c) PDrel, and (d) PE for Chinese EBWPs. For each diversity index, the hotspots were defined with the local maximization method at the 5% (red) or 10% (green) levels of the grids. Albers equal-area conic projection. The map was generated using ArcGIS 10.1 (ESRI, Redlands, CA, USA; http://www.esri.com).