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1
SIP Assessing the Spatial-temporal dynamics of
savanna ecosystem condition and services in and around the Kruger National Park (KNP),
South Africa
Moses Cho and Abel Ramoelo
2
The Kruger National Park (KNP), South Africa
KNP covers nearly 2 million hectares of land
Wildlife tourism, grazing land for livestock production, provision of food
(e.g proteins, fruits, honey) and energy resources
Provision of Ecosystem Services
Frequent droughts, bush encroachment, overgrazing, rhino poaching
Threats to Kruger National Park ecosystem
Remote sensing of KNP ecosystem condition
and services
Energy and browsing resources
Grazing resources Ecotourism
- Woody cover - AGB biomass - Tree Height
- Grass quality (leaf N)
- Herbaceous biomass
- Bush encroachment - Land use/cover patterns - Phenology/drought patterns
Co
nd
itio
n o
f th
e
reso
urc
e
SER
VIC
E
6
Grass quality (leaf N distribution)
SAR and mapping of woody cover, biomass,
volume
Assess multi-frequency SAR in typically heterogeneous shrub and tree mix Combined L&C&X-band > L-band (ALOS PALSAR) > C-band (RADARSAT-2) > X-band (TerraSAR-X) SAR better predict woody volume > cover = biomass
X-band
R² = 0.32
RMSE = 10.88 t/ha
SEP = 59.82 %
C-band
R² = 0.60
RMSE = 7.81 t/ha
SEP = 43.66 %
R² = 0.78
RMSE = 6.05 t/ha
SEP = 32.90 %
L-band X+C+L-
band R² = 0.83
RMSE = 5.20 t/ha
SEP = 29.18 %
X+C+L-band
Observed woody cover (LiDAR)
Pre
dic
ted
wo
od
y co
ver
(SA
R)
8
Landscape phenology
9
Bush encroachment and tree cover loss
Utility of outputs by other stakeholders:
- Land use assessment, Bushbuckridge municipality
Thank you
Acknowledgement