Table 6.
Decomposition of MODIS EVI time series into trend and seasonal components for natural terrestrial ecosystems in Turkey.
| Natural terrestrial ecosystem types | Components | Seasonal Indices | Accuracy measurements | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Trend | Seasonal | W | Sp | Su | A | MAPE | MAD | MSD | |
| (Sub)nival snow/ice | 0.0879 + 0.00076*t | A | -0.0799 | -0.0810 | 0.1307 | 0.0301 | 22.14 | 0.017 | 0.0004 |
| Alpine barren/sparsely vegetated | 0.1691 - 0.00016*t | A | -0.0320 | -0.0842 | 0.1130 | 0.0032 | 14.35 | 0.024 | 0.0015 |
| Boreal barren/sparsely vegetated | 0.1781 - 0.001269t | A | 0.0004 | -0.0535 | 0.0682 | -0.0150 | 15.03 | 0.020 | 0.0007 |
| Boreal forest | 0.2234 + 0.00009*t | M | 1.0438 | 0.8409 | 1.2988 | 0.8163 | 6.47 | 0.014 | 0.0002 |
| Cool Temperate barren/sparsely vegetated | 0.17046 - 0.00026*t | A | -0.0336 | 0.0364 | 0.0307 | -0.0334 | 5.57 | 0.009 | 0.0001 |
| Cool Temperate grassland | 0.1914 - 0.00040*t | M | 0.8195 | 1.1118 | 1.2276 | 0.8409 | 5.32 | 0.009 | 0.0001 |
| Cool Temperate shrubland/woodland | 0.2108 - 0.00049*t | M | 0.8757 | 1.0178 | 1.2485 | 0.8578 | 4.50 | 0.008 | 0.0001 |
| Cool Temperate forest | 0.24422 - 0.00040*t | A | -0.0232 | -0.0101 | 0.0621 | -0.0288 | 3.59 | 0.008 | 0.0001 |
| Warm Temperate barren/sparsely vegetated | 0.1775 + 0.00011*t | A | -0.0347 | 0.0503 | 0.0172 | -0.0329 | 4.09 | 0.007 | 0.0001 |
| Warm Temperate grassland | 0.2267 - 0.00011*t | M | 0.9042 | 1.2371 | 1.0143 | 0.8442 | 3.64 | 0.008 | 0.0001 |
| Warm Temperate shrubland/woodland | 0.2596 - 0.00036*t | M | 0.8574 | 1.1917 | 1.1045 | 0.8462 | 3.20 | 0.008 | 0.0001 |
| Warm Temperate forest | 0.2978 - 0.00033*t | M | 0.7713 | 1.0351 | 1.2301 | 0.9633 | 2.44 | 0.007 | 0.0001 |
| Mediterranean barren/sparsely vegetated | 0.2035 + 0.00017*t | A | -0.0288 | 0.0773 | -0.0161 | -0.0324 | 3.74 | 0.008 | 0.0001 |
| Mediterranean grassland | 0.2687 + 0.000008*t | A | -0.0174 | 0.0668 | -0.0050 | -0.0444 | 3.93 | 0.010 | 0.0001 |
| Mediterranean shrubland/woodland | 0.2768 - 0.00003*t | M | 0.9280 | 1.2723 | 0.9481 | 0.8514 | 3.88 | 0.010 | 0.0002 |
| Mediterranean forest | 0.2935 - 0.00033*t | A | -0.0156 | 0.0339 | -0.0005 | -0.0176 | 2.12 | 0.006 | 0.00006 |
A: Additive; M: Multiplicative; t: temporal index of 1 to 28 for the period of 2000 to 2007 in the recurrent seasonal order of Winter (W), Spring (Sp), Summer (Su), and Autumn (A), respectively.