Proceedings of the Symposium on Global and Environmental Monitoring: Proceedings of the Symposium on Global and Environmental Monitoring

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Persistent identifier:: 856665355

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts ; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856665355

Language:: English

Document type:: Multivolume work

Volume

Persistent identifier:: 856669164

Title:: Proceedings of the Symposium on Global and Environmental Monitoring

Sub title:: techniques and impacts; September 17 - 21, 1990, Victoria Conference Centre, Victoria, British Columbia, Canada

Scope:: XIV, 912 Seiten

Year of publication:: 1990

Place of publication:: Victoria, BC

Publisher of the original:: [Verlag nicht ermittelbar]

Identifier (digital):: 856669164

Illustration:: Illustrationen, Diagramme, Karten

Signature of the source:: ZS 312(28,7,1)

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Editor:: International Society for Photogrammetry and Remote Sensing, Commission of Photographic and Remote Sensing Data

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: [THP-2 GIS INTEGRATION]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: GIS, REMOTE SENSING AND VIDEO TECHNOLOGY INTEGRATION. by Frank Hegyi

Document type:: Multivolume work

Structure type:: Chapter

ACQUISITION OF FOREST RESOURCE INVENTORY THEME AND DATA This process is designed to utilize aerial photographs at scales of 1:15,000 and 1:10,000, together with temporary and permanent samples. The current funding levels of forest inventories are rarely sufficient to collect the number of samples required for the estimation of descriptive statistics on an individual stand or polygon basis. It is therefore recommended to utilize air photo samples in the context of multiphase (double) sampling. The 70mm aerial photos at 1:500 or 1:1,000 scales, such as used in British Columbia, can provide the required information, which can be adjusted or "corrected" with information obtained from ground samples. Both ground and photo samples may then be used for the development of multiple regression equations to provide volume estimates for each strata, assuming that the independent variable of the regressions can provide the necessary linkages to the stand descriptions (as used in the classification system). Airborne scanner data with 0.5 m pixel resolution such as MEIS, has the potential for providing a more efficient alternative to the current method of photo sampling. For example, measurements can be automated with the digital data, thus improving the current throughput problems. In addition, airborne scanner data can facilitate some measure of automation in "photo" interpretation. The next major challenge is to transfer boundaries of homogeneous strata to maps with the aid of photogrammetric techniques and GIS, including their corresponding descriptive statistics. Quality control is an important aspect of this process, and if implemented efficiently, it can lead to major efficiencies in terms of cost effectiveness. The appropriate sampling system recommended in this paper is multi-phase sampling with partial replacement (Loetsch and Haller 1973, Cunia 1974, and Hegyi 1989). ACQUISITION OF NON-FOREST RESOURCE INVENTORY MAPS AND DATA Multi resource inventories need to include information about land base which provides descriptive statistics on non timber resources, as well as on the forest land itself. The leading components of this information base are fish and wildlife data, environmental sensitivity evaluation by aggregated strata, land use options, and consensus decisions on land allocation. The integration of information on non timber resources with the forest resource inventory data base can be achieved through the use of GIS and Image Analysis Systems. However, the available information base in this area is currently incomplete, and opportunities for linkages between the various data bases have not been fully explored. For example, for the fish and wildlife data base, the forest resource inventory information can provide useful data on habitat. Opportunities exist to increase throughput and reduce the unit cost of producing land related information by making full use of the functional relationships between the various source of data. ACQUISITION OF SOCIOECONOMIC MAPS AND DATA Public concerns about forest management, land use options and allocation, as well as about the negative effects of resource management, will increase in the 1990’s. A lot is being said about the lack of reliable information that is needed for decision-making in environmental management, but little is being done about acquisition itself. Current data acquisition efforts are generally reactive, i.e., focusing on areas under land use conflict discussions, rather than being productive. Recommended components of this process are information on environmental concerns about selected areas, criteria for conservation and their linkage to specific areas, and incorporation of the concerns of special interest groups representing hunting, fishing and tourism. Again the current data base in this area is incomplete.

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