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Figure 1

From: Precipitation and potential evapotranspiration determine the distribution patterns of threatened plant species in Sichuan Province, China

Figure 1

(a) Map of Sichuan Province (study area) showing elevation gradient. (b) Relationship between species richness of threatened plants and the MDE in Sichuan Province of China. Black solid dot represents the species richness while the black line is the highest fit of the polynomial curve. The explanatory power of the regression model is significant at p < 0.005. The red solid line is the predicted mean richness derived from RangeModel. Red dotted line show 95% confidence intervals predicted by the mid-domain effect (MDE) randomization model. (a) was generated in ArcGIS (version 10.3.1) using Shuttle Radar Topography Mission (SRTM)28 digital elevation data. The map of China and Sichuan were generated from the standard map of drawing number GS (2019) 1698, downloaded from the official website of the National Administration of Surveying, Mapping and Geoinformation of China (NASG).

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