Kriging potential of digital elevation model for forest harvesting planning
DOI:
https://doi.org/10.4336/2017.pfb.37.92.1492Keywords:
Remote sensing, Cutting, ExtractionAbstract
The objective of this study was to evaluate kriging in SRTM and ASTER digital elevation models (DEMs) to assist in the planning of forest harvesting. The following DEMs were tested: SRTM with 30 m and with 90 m spatial resolution (SR); ASTER 30 m SR; krigged SRTM 30 m and 90 m; krigged ASTER 30 m; and standard MDE, obtained from a planialtimetric map. Using DEMs declivity maps were generated according to restrictions of harvesting machines in forest. DEMs were evaluated using descriptive statistical analysis, and qualitative and quantitative analysis. DEMs assessed presented significant altitude spatial dependence. The differences of root-mean-square error between DEMs from original SRTM and ASTER images showed little difference from krigged DEMs. The results of the quantitative and qualitative analysis showed improvement by means of kriging in SRTM DEMs with 30 m and 90 m of spatial resolution. However, DEM ASTER 30 m did not present the same behavior, showing better results in its original version. The krigged DEM SRTM 30 m presented more potential to be used in the forest harvest planning, when DEMs in larger scales are not available.Downloads
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Published
2017-12-29
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How to Cite
FERREIRA, F. DE A. C. et al. Kriging potential of digital elevation model for forest harvesting planning. Pesquisa Florestal Brasileira, v. 37, n. 92, p. 579–586, 29 Dec.2017.
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