Proceedings of Symposium on Remote Sensing and Photo Interpretation: Proceedings of Symposium on Remote Sensing and Photo Interpretation

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Multivolume work

Persistent identifier:: 842147969

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 842147969

Language:: German

Other Title:: Nebentitel: Proceedings : Symposium on Remote Sensing and Photo Interpretation

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Document type:: Multivolume work

Volume

Persistent identifier:: 84214806X

Title:: Proceedings of Symposium on Remote Sensing and Photo Interpretation

Sub title:: October 7 - 11, 1974, Banff, Alberta, Canada

Scope:: VII, 465 Seiten

Year of publication:: 1974

Place of publication:: Ottawa, Ontario

Publisher of the original:: Canadian Inst. of Surveying

Identifier (digital):: 84214806X

Illustration:: Illustration, Diagramme, Karten

Signature of the source:: T 15 B 1305

Language:: German

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

Corporations:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Adapter:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Founder of work:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Other corporate:: Symposium on Remote Sensing and Photo Interpretation, 1974, Banff, Alberta; International Society for Photogrammetry, Commission Interpretation of Data; Canadian Institute of Surveying

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2015

Document type:: Volume

Collection:: Earth sciences

Chapter

Title:: VEGETATION DAMAGE CHAIRMAN. - A. REINHOLD

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: INTERPRETATION OF VEGETATION DAMAGE, EXTENSIVELY MANAGED LANDS. Peter A. Murtha

Document type:: Multivolume work

Structure type:: Chapter

photos. Ciesla concluded that "...ultra-small-scale color - IR photographs comprise a potential tool for detecting and mapping this type of damage...(total defoliation)...as long as it is restricted to nearly pure stands of host type with little or no herbaceous vegetation in the under-storey to mask feeding injury". Harris, (1974), noted that "...boundaries and intensities of a variety of forest pest infestations can also be delineated on color photographs at some of the smallest scales (about 1:137,000) available, and at least some infesta tions that contrast well with surrounding forests can also be seen on ERTS-1 imagery." Beaubien and Jobin (1974) took advantage of such contrast to map eastern hemlock looper (Lambdina f. fiseellaria (Gn.)) killed balsam fir {Abies balsamea (L.) Mill) on Anticosti Island, Canada, from ERTS-1 imagery. Murtha (1973c) showed examples of delineation of SO 2 damage on ERTS-1 imagery. Again, the primary reason for being able to map the damage comes from initial a priori knowledge, and contrasts between affected and unaffected vegetation as it is recorded in various regions of the spectrum by the multi-spectral scanner aboard the satellite. DISCUSSION The preceeding examples have demonstrated that a capability exists via remote sensing techniques and interpretation ability to transfer detection and mapping of vegetation damage - (tree mortality and defoliation) from the research status to the operational status. It is the considered opinion of this author that vegetation damage surveys for all intents and purposes can be made operational! The constraints are timing of imagery acquisition, econ omics, and the ability of the interpreter. He must know what to look for. Why haven’t remote sensing damage surveys become more common place? Several reasons can be speculated upon. Perhaps the most important factors are a need for more effective communication and acceptance of new techniques. To date, it has been the responsibility of the research community to simply publish reports of their investigations. All too frequently, the reports are only read by a select group of other researchers. The responsibility of the research worker to "sell" his findings or techniques to the people who need to know has virtually never existed. Perhaps it should. The attitude of staying with an old technique because it is familiar also has an effect. If the scientist had the responsibility to "sell" his techniques, perhaps new ideas would be more readily accepted. Another reason has been caused by a degree of "bandwagoning". Re search scientists and others have initially over-emphasized and over-reacted to a new product, be it a new film, scanner, or airborne platform as the total answer to all problems. The harm has come because of a tendency to avoid doing the necessary homework, becoming familiar with the product, and hence familiar with its limitations, and also because of the quick rewards of researching a new item, thus avoiding the "hard" selling job mentioned above. With respect to interpretation of damage to vegetation, "per se" emphasis should concentrate on damage assessment. In commercial forest areas, volume lost from timber stands is important. To date we are barely beyond

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