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Forest Ecosystems
Fig. 6 | Forest Ecosystems

Fig. 6

From: Analysing the effect of stand density and site conditions on structure and growth of oak species using Nelder trials along an environmental gradient: experimental design, evaluation methods, and results

Fig. 6

Two-dimensional smoother for the spatial effect as included in our GAMs, exemplarily taken from the fitted model after eq. 4 for tree height. The darker the color, the greater is the smoother’s value. E and N are easting and northing values in m. The original nine-digit values were transformed for a more convenient presentation. Thus, the plots do not show absolute geographic positions, but the relative positions of the two Nelder-wheels in each trial

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