Remote Sensing Based Spatial Statistics to Document Tropical Rainforest Transition Pathways
AbstractIn this paper, grid cell based spatial statistics were used to quantify the drivers of land-cover and land-use change (LCLUC) and habitat degradation in a tropical rainforest in Madagascar. First, a spectral database of various land-cover and land-use information was compiled using multi-year field campaign data and photointerpretation of satellite images. Next, residential areas were extracted from IKONOS-2 and GeoEye-1 images using object oriented feature extraction (OBIA). Then, Landsat Thematic Mapper (TM) and Enhanced Thematic Mapper Plus (ETM+) data were used to generate land-cover and land-use maps from 1990 to 2011, and LCLUC maps were developed with decadal intervals and converted to 100 m vector grid cells. Finally, the causal associations between LCLUC were quantified using ordinary least square regression analysis and Moran’s I, and a forest disturbance index derived from the time series Landsat data were used to further confirm LCLUC drivers. The results showed that (1) local spatial statistical approaches were most effective at quantifying the drivers of LCLUC, and (2) the combined threats of habitat degradation in and around the reserve and increasing encroachment of invasive plant species lead to the expansion of shrubland and mixed forest within the former primary forest, which was echoed by the forest disturbance index derived from the Landsat data. View Full-Text
Share & Cite This Article
Ghulam, A.; Ghulam, O.; Maimaitijiang, M.; Freeman, K.; Porton, I.; Maimaitiyiming, M. Remote Sensing Based Spatial Statistics to Document Tropical Rainforest Transition Pathways. Remote Sens. 2015, 7, 6257-6279.
Ghulam A, Ghulam O, Maimaitijiang M, Freeman K, Porton I, Maimaitiyiming M. Remote Sensing Based Spatial Statistics to Document Tropical Rainforest Transition Pathways. Remote Sensing. 2015; 7(5):6257-6279.Chicago/Turabian Style
Ghulam, Abduwasit; Ghulam, Oghlan; Maimaitijiang, Maitiniyazi; Freeman, Karen; Porton, Ingrid; Maimaitiyiming, Matthew. 2015. "Remote Sensing Based Spatial Statistics to Document Tropical Rainforest Transition Pathways." Remote Sens. 7, no. 5: 6257-6279.