Mapping Mountain Pine Beetle Attacked Ponderosa Pine From High Resolution Imagery
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| Author | : Joanne White |
| Publisher | : |
| Total Pages | : 30 |
| Release | : 2006 |
| Genre | : Nature |
| ISBN | : |
The mountain pine beetle (Dendroctonus ponderosae Hopkins) is the most destructive insect of mature pine forests in western North America. From a forest management perspective, estimates of the location and extent of mountain pine beetle red-attack are critical; however, the degree of precision required for these estimates varies according to the management objective under consideration and the nature of the mountain pine beetle infestation. This report describes a study to explore the potential of single-date SPOT multispectral imagery to detect and map mountain pine beetle red-attack damage in an area with relatively low infestation levels using an automated classification procedure. In doing so, issues unique to SPOT, and the potential offered by the higher spatial resolution of SPOT compared with Landsat, could be identified. The viability of SPOT as an alternative data source to Landsat could then be assessed.
| Author | : Lyndon B. Johnson Space Center |
| Publisher | : |
| Total Pages | : 380 |
| Release | : 1974 |
| Genre | : Astronautics in earth sciences |
| ISBN | : |
| Author | : |
| Publisher | : |
| Total Pages | : 384 |
| Release | : 1974 |
| Genre | : Aeronautics |
| ISBN | : |
| Author | : Michael A. Wulder |
| Publisher | : CRC Press |
| Total Pages | : 269 |
| Release | : 2006-07-27 |
| Genre | : Science |
| ISBN | : 1420005189 |
Remote sensing and GIS are increasingly used as tools for monitoring and managing forests. Remotely sensed and GIS data are now the data sources of choice for capturing, documenting, and understanding forest disturbance and landscape pattern. Sitting astride the fields of ecology, forestry, and remote sensing/GIS, Understanding Forest Disturbanc
| Author | : British Columbia. Ministry of Forests |
| Publisher | : |
| Total Pages | : 348 |
| Release | : 1991 |
| Genre | : Bioclimatology |
| ISBN | : |
Descriptions, maps, illustrations and tables of British Columbia's biogeoclimatic zones, as well as an overview of how the biogeoclimatic zone system was developed.
| Author | : Arthur W. Magill |
| Publisher | : |
| Total Pages | : 490 |
| Release | : 1975 |
| Genre | : Abies concolor |
| ISBN | : |
A two-stage shelterwood cutting, at 12 trees per acre, with site preparation, enhanced seedfall, regeneration, and residual growth at the Challenge Experimental Forest, north central California. Shelterwood trees produced 9.2 times more seed than trees in the control. Ponderosa pine regeneration numbered about 3700 seedlings per acre (9139 per ha) and tolerant conifers 600 seedlings (1482 per ha) after 5 years. Hardwood seedlings and sprouts also were abundant. Basal area growth rates for all species in nearly all diameter classes were greater in the shelterwood than in the control. The shelterwood cutting method is recommended for use in young-growth, mixed-conifer stands.
| Author | : Robert Clement Aldrich |
| Publisher | : |
| Total Pages | : 84 |
| Release | : 1976 |
| Genre | : Aerial photography in forestry |
| ISBN | : |
Data products from the Skylab Earth Resources Experiment Package were examined monocularly or stereoscopically using a variety of magnifying interprctation devices. Land use, forest types, physiographic sites, and plant communitics, as well as forest stress, were interpreted and mapped at sites in Georgia, South Dakota, and Colorado. Microdensitometric techniques and computer-assisted data analysis and sampling procedures were developed and tested against ground truth. Results indicate that only Skylab S190B color photographs are good for classification of forest and nonforest land (90 to 95 percent correct). Both visual and microdensitometer techniques can separate range plant communities at the Region level (ECOCLASS system) with over 90 percent accuracy. Only mountain pine beetle infestations more than 26 m (85 ft) long could be detected. In a study near Redding, California, radiance from Skylab S190B and LANDSAT sensors was found linearly correlated with terrain reflectance.
| Author | : |
| Publisher | : |
| Total Pages | : 190 |
| Release | : 1985 |
| Genre | : Aerial reconnaissance |
| ISBN | : |
| Author | : Bo Guang Zhao |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 486 |
| Release | : 2008-09-27 |
| Genre | : Technology & Engineering |
| ISBN | : 4431756558 |
Pine forests face a global threat of pine wilt disease, which is being spread by vector beetles carrying pathogenic nematodes from dead trees to healthy ones. Among the host pines there are varying degrees of susceptibility, and nematode strains also contain a variety of virulences, both of which factors help to determine whether infected host trees will die or survive. As well, biotic and abiotic environmental factors influence the fate of infected trees. This book describes the history of the disease, pathogenic nematodes, vector beetles, the etiology and ecology of the disease, microorganisms involved, and control methods that utilize host resistance and biological control agents. Concrete, comprehensive, and the most up-to-date knowledge about this worldwide forest epidemic is presented for readers, enabling them to understand the nature and epidemic threat of pine wilt disease.
| Author | : |
| Publisher | : |
| Total Pages | : 308 |
| Release | : |
| Genre | : Forests and forestry |
| ISBN | : |
