Mapping land cover types in Amazon basin using 1 km JERS-1 mosaic
Summary (1 min read)
Summary
- The 100 meter JERS-I Amazon mosaic image was used in a new classifier to generate a 1 km resolution land cover map.
- The inputs to the classifier were lkm resolution mean backscatter and seven first order texture measures derived from the 100 m data by using a 10 x 10 independent sampling window.
- The classification approach included two interdependent stages: 1) a supervised maximum a posteriori Baysian approach to classify the mean backscatter image into 5 general land cover catagories of forest, savanna, inundated, white sand, and anthropogenic vegetation classes, and 2) a texture measure decision rule approach to further discriminate subcatagory classes based on taxonimc information and biomass levels.
- Fourteen classes were successfully separated at lkm scale.
- The results were verified by examining the accuracy of the approach by comparison with the IBGE and the AVHRR 1 km resolution land.
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659 citations
Cites background or methods from "Mapping land cover types in Amazon ..."
...Backscatter and texture at L-band (1.25 GHz) from this instrument are sensitive to forest structure and biomass at low densities of tree cover, such as open forests and woodland savannas (Saatchi et al., 1997, 2000; Luckman et al., 1998; Podest & Saatchi, 2002)....
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...DTM has been successfully applied to remote sensing data in the past because of its simplicity, efficiency, and robustness (Hansen et al., 2000; Saatchi et al., 2000, 2005a, 1998; Simard et al., 2000, 2001)....
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..., 2001), JERS-1 radar (Saatchi et al., 2000), and SRTM data (http://www2....
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541 citations
445 citations
Cites background from "Mapping land cover types in Amazon ..."
...The Landsat sensor, with its comparatively narrow field of view, is not as affected by surface anisotropic effects as wider field of view sensors, such as MODIS (Schaaf et al., 2002)....
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311 citations
Cites background or methods from "Mapping land cover types in Amazon ..."
...However, based on the large-area classification work in Congo and Amazon forests (De Grandi et al., 2000a,b; Saatchi et al., 2000), it seems likely that general land cover classes can be readily mapped (perhaps manually rather than digitally) with satellite SAR data....
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...JERS-1 data were selected for this application partly because of ‘difficulties in interpreting the spectral information of Landsat data acquired at different years or seasons’ (Saatchi et al., 2000: 1202)....
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213 citations
References
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108 citations
"Mapping land cover types in Amazon ..." refers background or methods in this paper
...Though none were designed specifically for land cover mapping, several investigations have demonstrated that the data provide unique information about the characteristics of tropical landscapes (Sader, 1987; Foody and Curran, 1994)....
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...…have addressed these characteristics by using the radar data for mapping tropical land cover and estimating the biomass of regenerating forests (Foody and Curran 1994; Luckman et al., 1997; Saatchi et al., 1997; Rignot et al., 1997). satellite was used to map the humid tropical forestsof the…...
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77 citations
"Mapping land cover types in Amazon ..." refers background in this paper
...Though none were designed specifically for land cover mapping, several investigations have demonstrated that the data provide unique information about the characteristics of tropical landscapes (Sader, 1987; Foody and Curran, 1994)....
[...]
70 citations