Northern Territory University: Completed
Khwaja Zulfiquar Hayder
The study aimed to develop a methodology for mapping and
monitoring savanna landscape by remote sensing and GIS techniques.
It also tested various resolution imageries for their suitability
in mapping the savanna landscape.
Sub-issues examined included:
- What sort of satellite data resolution is the most appropriate
for bringing about the best result;
- What is the influence of parameters such as land cover, land
use, rainfall and temperature on the classification technique;
- What procedures based on remote sensing and GIS technologies
can be developed to map savanna vegetation.
Various resolution imageries were used, such as Landsat MSS, TM,
SPOT XS, SPOT 4/SWIR and AIRSAR, with and without synergism, along
with digital elevation model (DEM) data to map large areas (upto
15000 km 2 ) of the savanna landscape. At various stages
of the study, different digital image processing programs such as
ENVI, ERDAS Imagine and microBrian and ArcView GIS (and some
ArcInfo) were extensively used.
They provided good results for mapping savanna land covers in
the region. A methodology involving spectral signature
extrapolation and GIS for mapping large areas of the region was
developed and more than 15000 km 2 area of savannas in
the northern Victoria River District of the Northern Territory was
mapped. Procedures for improving mapping accuracy were also
recommended in the study.
The methodology developed in the study can be used for mapping
and monitoring large areas of savanna landscape in northern Australia if
the proposed recommendations are met.