| dc.description.abstract | Sri Lanka is one of the few surviving countries
in the world with an extensive natural forest cover,
however, most of the existing forest has been impacted by
changing environmental conditions and escalating
disturbances. To preserve our forest environment,
investigating its temporal resilience is important. Forest
Resilience is the capacity of forests to recover from
disturbances in which they experience undesired shifts
from their original state to available alternative stable.
This research study mainly focused to analyse the
resilience of forests Wilpattu National Park and
Kanneliya Rain Forest with a time series of the Landsat
8/9 and Sentinel 1 satellite imagery during the period of
the year 2017 to 2022 by generating Forest Resilience
Index (FRI). In this study, Landsat 8/9 and Sentinel 1
satellite images were used to create the NDVI, LAI and
RVI layers. Then time series analysis was conducted with
values of NDVI, LAI and RVI. The final outcomes were
Forest Resilience Indices that were generated with NDVI
and RVI. The FRI for Wilpattu National Park is
0.7827NDVI + 0.2173RVI and for Kanneliya Rain Forest
is 0.7853NDVI + 0.2147RVI. The validation was
conducted with generated FRI for the Upper Wilpattu
area and it was succeeded. This analysis helped to
analyse the temporal variability indicating the resilient
dynamics of the Sri Lankan forests. | en_US |
