After I transformed the waterhead drawdown graph, the classification result and the locations of known Sphagnum to ArcGIS raster format and combined them in one map, I am glad to find that there *is* good agreement between waterhead drawdown, vegetation type and Sphagnum distribution. Most Sphagnum patches are located in cells defined as "not dry". However, I cannot tell what is the exact line between "dry" and "not dry".
The absence of Sphagnum gives poorer result, I guess this is because I did not find some patches in the areas, but Sphagnum can in fact establish in some of them.
Next, I need to find out the width of Sphagnum habitat in terms of hydrology conditions. Then I can do remote sensing prediction for data of both 2003 and 2005, then determine the trend and the usability of GRASP model.
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