Table 3. SLM multivariate models for the residuals of species richness of all resident birds and its habitat groups.
| Variables | All birds | Forest birds | Shrub birds | Grassland birds | Desert birds | Wetland birds | ||
|---|---|---|---|---|---|---|---|---|
| Best model with 6 predictors | Mean annual precipitation | z | 2.76** | 4.84*** | 1.72 | 1.05 | ||
| Precipitation of the driest quarter | z | -5.93*** | -5.90*** | |||||
| Mean annual temperature | z | 3.61*** | ||||||
| Maximum temperature of the warmest month | z | -4.12*** | ||||||
| Minimum temperature of the coldest month | z | 5.83*** | 9.03*** | 0.02 | ||||
| Annual actual evapotranspiration | z | 0.02 | 0.25 | |||||
| Net primary productivity | z | 1.98* | 3.95*** | 2.58** | ||||
| Normalized difference vegetation index | z | -5.06*** | ||||||
| Temperature annual range | z | -7.46*** | -10.88*** | |||||
| Mean diurnal range | z | 2.92** | ||||||
| Temperature seasonality | z | 0.28 | -3.92*** | |||||
| Precipitation seasonality | z | -0.18 | ||||||
| Elevation variability | z | 9.33*** | 11.65*** | 11.00*** | ||||
| Main land cover type | z | -3.29* | -3.73*** | -3.47*** | -5.68*** | |||
| AIC | -810.9 | -594 | -1297 | -1749 | -1947 | -1253 | ||
| Fitted values | r2 | 0.66 | 0.65 | 0.63 | 0.54 | 0.72 | 0.77 | |
| Moran’s I | -0.04 | 0.00 | -0.05 | -0.06 | -0.10 | -0.05 | ||
| 19-predictor model | AIC | -875.4 | -678 | -1344 | -1833 | -2170 | -1555 | |
| Fitted values | r2 | 0.67 | 0.67 | 0.64 | 0.56 | 0.74 | 0.80 |
The details of analysis are the same with that in Table 2 (n = 2376; *: Pr(>|z|)<0.05; **: Pr(>|z|)<0.01; ***: Pr(>|z|)<0.001).