4) Comparison of the three subregions
The most active period of vegetation dynamics in the DSR was 2010–2015,
with 9.58% of the statistically significant area changes in this
region. The most active period of vegetation dynamics in the GSR and FSR
was 2000–2005, which accounted for 9.33% and 18.78% of significantly
changed areas, respectively, of the total areas of each subregion.
The overall trend across the three subregions was of vegetation
recovery. The ranking of areas with significant restoration was: FSR
(51.52%) > GSR (31.88%) > DSR (25.73%); and
the ranking of areas with significant degradation was: FSR (2.57%)
> DSR (0.53%) > GSR (0.33%). This shows that
the FSR is the subregion with the most fluctuations in vegetation change
on the MP, with the highest proportion of the area experiencing
significant recovery and degradation. The GSR and DSR remained
relatively stable, showing an overall improving trend. On the whole, the
improvement indicated by the NDVI occurred mostly in the south and east
of the study area.