Optimizing nearest neighbour configurations for airborne laser scanning-assisted estimation of forest volume and biomass
نویسندگان
چکیده
Northern Research Station, U.S. Forest Service, 1992 Folwell Avenue, Saint Paul, MN 55038, USA Department of Geography, University of Hawai’i at Mānoa, 422 Saunders Hall, 2424 Maile Way, Honolulu, HI 96822, USA Department of Ecology and Natural Resource Management, Norwegian University of Life Sciences, P.O. Box 5003, NO-1432, Ås, Norway Department of Agricultural, Food and Forestry Systems, Università degli Studi di Firenze, Via San Bonaventura, 13-50145, Firenze, Italy
منابع مشابه
Individual Tree Detection and Area-based Approach in Retrieval of Forest Inventory Characteristics from Low-pulse Airborne Laser Scanning Data
The two main approaches to derive forest information from small-footprint laser scanner data are the statistical area-based approach (ABA) and individual tree detection (ITD). In the present study we tested the accuracies of two ABA estimation methods, namely the k-nearest neighbour (k-NN) and a LASSO regression (LASSO) with ITD. In the estimation a practical low-pulse density (1.8/m) airborne ...
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Information pertaining to forest timber volume is crucial for sustainable forest management. Remotely-sensed data have been incorporated into operational forest inventories to serve the need for ever more diverse and detailed forest statistics and to produce spatially explicit data products. In this study, data derived from airborne laser scanning and image-based point clouds were compared usin...
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Airborne scanning LiDAR is a promising technique for efficient and accurate biomass mapping due to its capacity for direct measurement of the three-dimensional structure of vegetation. A combination of individual tree detection (ITD) and an area-based approach (ABA) introduced in Vastaranta et al. [1] to map forest aboveground biomass (AGB) and stem volume (VOL) was investigated. The main objec...
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Estimation of forest biomass has received much attention in recent decades. Airborne and spaceborne (SAR) have a great potential to quantify biomass and structural diversity because of its penetration capability. Polarizations are important elements in SAR systems due to sensitivity of them to backscattering mechanisms and can be useful to estimate biomass. Full Polarimetric Synthetic Aperture ...
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In the present study, the objective was to compare the accuracy of low-pulse airborne laser scanning (ALS), high-resolution noninterferometric TerraSAR-X (TSX) radar data and their combined feature set in the estimation of forest variables at the plot level. The variables studied included mean volume, basal area, mean height and mean diameter. Feature selection was based on a genetic algorithm ...
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