Environmental change monitoring applying satellite and airborne remote sensing data in the Taita Hills, Kenya
نویسندگان
چکیده
This paper presents environmental change monitoring in the Taita Hills, Kenya applying SPOT XS satellite imagery, aerial photography and digital camera data. The paper presents the data, methods for atmospheric correction, and results from land cover change detection and soil erosion change detection. The results indicated that gully density has doubled in the test sites during the observation period since 1955 and the area of Mwatate reservoir has decreased 25% due to siltation. SPOT satellite image analysis indicates that erosion areas have increased 33% (10 km) and built-up areas, indicating urban growth, have doubled between 1987 and 2002. The area of coniferous plantation forests has increased 32%, while the area of broad-leaved forest types (indigenous and plantation) has decreased 3% (1.6 km). Based on the results, the gully erosion and land degradation is an on-going process in the area, while forest cover does not show such a dramatic trend.
منابع مشابه
Airborne remote sensing of spatiotemporal change (1955-2004) in indigenous and exotic forest cover in the Taita Hills, Kenya
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