Abstract
Problem statement: Accurate, current and cost-effective individual standing tree data are required by forest management communities for use in forest inventory over large areas. Currently, most of the forest mapping process is done directly on the ground using many technique such as the bearing-distance and also the other technique that use the computer software as a support, such as Tree MapperTM. Instead of ground data collection and where there are difficulties in reaching the individual trees, hyper spectral remote sensing technology is the best option to map the tree positions. Approach: A novel approach to generating an individual tree crown mapping estimated for a lowland dipterocarp forest of Taman Rimba Ilmu, University Malaya, Kuala Lumpur using an airborne hyperspatial (1 m2 ground resolution) imager was presented. Results: A total of 297 individual tree crowns comprising of 83 Xylopia sp., 79 Ixonanthes sp., 56 Hevea sp., 15 Streblus elongates, 14 Pellacalyx sp., 12 Endospermum diadenum, 11 Macaranga gigantea, 10 Cratoxylum sp., 10 Cannarium sp. and 7 Ixonanthes icosandra were identified and delineated as individual polygons in a study area plot of 2 ha. Conclusion/Recommendations: It was found out that individual tree crowns in University Malaya can be detected and counted with reasonable field measured to image derived mapping accuracy of 98.65%. This study implied that acceptable individual tree crown classification maps and algometric equations relating diameter at breast height (dbh) or crown area to biomass can be used to generate timber volume estimates with established crown-diameter-volume correlations.
Highlights
Tree mapping can be defined as the acquisition of the tree position on the earth either in term of latitude and longitude and the Cartesian coordinate
Similar results of optimal band combinations for species identification were obtained from studies of (Jusoff and Ibrahim, 2009; Jusoff, 2009a) when they conducted studies on similar sensor applications to tropical forest species identification
Noted that there is no single standard method of operations for the missing bell 206 long ranger enhancement can be said to be ‘best’ for all kind of helicopter in Sarawak, Malaysia using near realimages, the need of different user may differ time airborne hyperspectral imaging systems
Summary
Tree mapping can be defined as the acquisition of the tree position on the earth either in term of latitude and longitude and the Cartesian coordinate. The Forest Service, United States Department of Agriculture used several methods in tree mapping on the forest plot (Wilson, 2000). Most of the forest mapping process is done directly on the ground using many technique such as the bearing-distance and the other technique that use the computer software as a support, such as Tree MapperTM. This technique converts the ground reading in terms of distance and bearing into tree position in terms of points, depending of the method of data collection that is being used
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