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:: [WP-2 LAND USE AND LAND COVER]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: REVISING LAND USE/LAND COVER MAPS USING LANDSAT THEMATIC MAPPER IMAGERY. Bruce Thomas, Anthony M. Turner

Document type:: Multivolume work

Structure type:: Chapter

REVISING LAND USE/LAND COVER MAPS USING LANDSAT THEMATIC MAPPER IMAGERY Bruce Thomas TYDAC Technologies Inc. 1600 Carling Avenue, Suite 310 Ottawa, Ontario K1Z 8R7 Anthony M. Turner Sustainable Development/ State of Environment Reporting Branch Environment Canada Ottawa, Ontario K1A OH3 ABSTRACT In order to assess recent anthropogenic impacts on an actively changing landscape in Alberta, Landsat Thematic Mapper winter (band 3) and summer (bands 3-5-4, boreal enhancement) transparencies were compared with Canada Land Inventory (CLI) "Present Land Use" (circa 1961) maps using visual interpretation techniques. A land use/land cover key was developed for 8 land use classes. A total of 49 pre to post-change class combinations were possible. About 30 of these combinations occurred in the region, were identified and mapped. Accuracy levels based on numbers of polygons from representative areas achieved an overall accuracy level of 86.7% when compared with aerial photography. About 20% of the Province of Alberta (207 1:50,000 scale maps) was updated for land use/land cover. The maps were subsequently digitized using automated techniques. Storage and analysis of changes was facilitated using both mainframe and microcomputer based GIS systems. Changes were compared with CLI land capability information in order to assess the sustainability of the land for agriculture, forestry and wildlife resource uses. Economic and operational implications of the project are discussed. KEYWORDS: land use monitoring; change detection; land use change INTRODUCTION There is little doubt that the primary agent in present global environmental changes is man. Perhaps the most visible evidence of how man alters his environment is available from viewing land use changes from a topographic, land use map or satellite image. Man's altering of the natural landscape into one of agricultural fields, road networks and urban development can occur over a large area in a relatively short period of time. The collective impact of such actions may affect the sustainability of the land for other resources such as forestry or wildlife habitat. Earth resource satellites can provide detailed, accurate and current land use/land cover information at global, national and regional scales. Resource allocation planning, assessment of impacts of land use changes on habitat and assessing the interactions of climate, man and vegetation are but three examples of applications for such data. Some of the most prominent examples of extensive non-urban land use changes in Canada occur in the so-called agriculture- forest interface regions of the country (Fox and Macenko, 1985) . An early investigation of a select portion of one of those regions - the Peace River region in Alberta - produced a descriptive key of land use and land cover units based on visual analysis of Thematic Mapper (Farmer et al., 1986). The key demonstrated that several significant land uses were capable 358 of being detected and mapped. Subsequently, a comparison of different approaches concluded that visual analysis could produce accurate results in a cost- effective manner (Seguin and Ryerson, 1986). These findings led to a program of operational mapping of about 115,000 km 2 of Alberta for land use change. This paper summarizes that project. PROJECT AREA In the province of Alberta, three broad regions of land use have been identified (Alberta Forestry Lands and Wildlife, 1988). There is a large area falling under forestry management (often referred to as the "green zone") ; a "white zone" dominated by agricultural activity; and a third transitional "yellow zone" having substantial forest resources or potential, yet not protected from agricultural development. The project area encompassed the entire transitional zone occupying about 20% of the province. The project area consisting of all or part of 207 1:50 000 map sheet areas was divided into three sectors: the Peace River Zone, a Central Zone, and the Foothills Zone (Figure 1) . Active development of the Peace River Zone continues as extensive areas of forest are cleared for agriculture and other uses. The Central Zone is mostly characterized by undulating aspen parkland terrain containing smaller, sometimes irregularly shaped woodlands and agriculture fields. The Foothills Zone in southwestern Alberta possesses an intricate landscape of

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