1,720,976 research outputs found
Recommended from our members
Dendrometry Field Manual
Get PDFAs it was conceptualized, the manual is aligned with other field manual that are currently in use by different universities, such as Mississippi State University, Stephen F Austin, or University of British Columbia. The present manual is the first unified version of Louisiana Tech University of a Field Manual to be used in conjunction with the Forest Measurements course.
The manual covers both forest inventory techniques that are traditionally used in cruising, such as preset intensity inventory, as well as modern techniques, such as distance sampling. The manual is dedicated to layout in great details all the steps required for successful completion of a forest inventory. To each technique a special section is dedicated to the possible usage of the respective technique, such as distance sampling can be used in forest inventory, fuel load or forest planning.
A series of visual aids were used to enhance the presentation. The images, drawings, or chart presented are either produced by the author or courtesy of the US Forest Service, which states that “Photographs and images on this website (i.e., http://www.fs.fed.us/) are publicly owned, produced by Forest Service employees or other government agencies and institutions; or, have been obtained from non-governmental organizations and private photographers with their permission to use them on this website. Photographs included on this website that are publicly owned are available for free for non-commercial scientific and educational uses.” In text the graphical aids obtained from the US Forest Service website were identified in the caption
Recommended from our members
Estimation of surface canopy water in Pacific Northwest forests by fusing radar, lidar, and climatic data
Get PDFSurface Canopy Water (SCW) is the intercepted rain water that resides within the tree canopy and plays a significant role in the hydrological cycle. Challenges arise in measuring SCW in remote areas using traditional ground based techniques. Remote sensing in the radio spectrum has the potential to overcome the challenges where traditional modelling approaches face difficulties. In this study we investigated the capability of the most recent SAR platform, the Sentinel-1 constellation to estimate SCW. We measured the backscatter of six forest stands in the H J Andrews experimental forest in central Oregon (as well as four clear cut areas and one golf course) over three summers to describe how the backscatter signal changes with moisture. We found significant results when we executed the analysis on radar images on which individual trees crowns were delineated from lidar, as opposing to SCW estimated from individual pixels backscatter. Significant differences occur in the mean backscatter between radar images taken during rain vs. during dry periods (no rain for > 1h). A lack in sufficient data prevented the formulation of a robust predictive model, however our results suggest the posibilty of mapping canopy moisture using SAR in the Pacific Northwest
Recommended from our members
Tree3_field.txt
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree2_field.txt
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree1_field.txt
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree1_PPC.las
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree3_PPC.las
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree2_PPC.las
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree3_mesh.dxf
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
Recommended from our members
Tree2_mesh.dxf
No full textThe dataset contains three loblolly pines (Pinus taeda Lindl.) stems reconstructed with terrestrial photogrammetric techniques. The trees were growing in west-central Louisiana, Vernon parish. The reconstructed models reached over 50% of the relative height, the proportion of the stem, on which the majority of the merchantable volume is located. After capturing the images needed for the 3D photogrammetric rendering , we cut the trees and measured their diameters every meter along the stem starting at 1 m above the ground. The files describing the three trees provide a calibrated dataset that can be used for development of taper models, testing and calibration of segmentation algorithms, or identifications of products that can be obtained from a stem
- …
