Figure 3 Variations of Rn /DSR and I /DSR in the selected tropical rainforest, subtropical evergreen forest, temperate deciduous forest, coniferous forest, shrub land, savanna and grassland ecosystems.
Figure 4 Correlations of the monthly radiation index and the gross primary productivity in the selected tropical rainforest, subtropical evergreen forest, temperate deciduous forest, coniferous forest, shrub, savanna and grassland ecosystems.
Figure 5 Correlations of the daily radiation index and the gross primary productivity in the selected tropical rainforest, subtropical evergreen forest, temperate deciduous forest, coniferous forest, shrub, savanna and grassland ecosystems.
Figure 6 Correlation between annual gross primary productivity and radiation index from 54 flux sites of diverse ecosystems.