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-5 IMAGE INTERPRETATION AND ANALYSIS]

Document type:: Multivolume work

Structure type:: Chapter

Chapter

Title:: INTERPRETATION OF COLOUR-INFRARED PHOTOGRAPHS FOR THE ASSESSMENT OF FOREST DECLINE IN CENTRAL EUROPE. Claus-Peter Gross, Norbert Heidingsfeld

Document type:: Multivolume work

Structure type:: Chapter

753 Where for classification purposes discoloura tion i3 taken into account in addition to de foliation, the following system is used: Defoliation class Discolouration class 12 3 Resulting damage class 0 0 12 1 12 2 2 2 3 3 3 3 3 3 1.2 Actual Situation and Extent of Damage Extensive forest die-back due to the immedi ate effect of SO 2 emission, for example, can be observed mainly in the Erzgebirge-mountain range (CSFR, GDR), and Isergebirge-mountain range (GDR). For the most part of Europe, ho wever, slight to moderate damage prevails. In the Federal Republic of Germany nearly half of the forest area is affected by the new ty pes of damage but only 15 per cent are seri ously affected or dying (Fig. 1) /3/. FOREST AREA X g 3-4 severely Q2 moderately [7)1 sligntly [jO without damaged and dead damaged damaged visible danage Fig. 1: Extent and development of forest da mage in the Federal Republic of Ger many What is certain is that the damage depends on species, age of trees, altitude and expositi on. Seriously affected trees can be found especially in the Alps and a number of low mountain ranges. Considering the progress of forest decline in Europe, inventories limited to individual countries are no longer adequate to monitor the scope of this pandemic process. The first measure taken by the Commission of the Euro pean Community (EEC.) was to establish a stan dardized terrestrial inventory at permanent sample plots in all member countries. The as sessment method used is basically identical to the method described above. First results, relevant for the years 1987/1988 are now available through the EEC /12/. Mention must also be made of an international survey of forest damage in Europe which is coordinated by the United Nations Economic Commission for Europe (UN-ECE). This survey assesses forest damage not only in western, but also in eastern Europe and uses similar methods /18/. 2 AERIAL INVENTORIES BY COLOUR INFRARED PHOTOGRAPHS 2.1 Regional Pilot Projects In addition to inventories taken in field work, remote sensing methods based on the in terpretation of Colour-Infrared (CIR) photo graphs is a common practice since 1982. Aerial inventories in EEC countries started in 1985 with pilot projects conducted in Bel gium, France and West Germany to develop and apply a modular inventory and monitoring system based on CIR-photographs /10/. One of the main results of these pilot pro jects was to define common parameters for the unitary classification of damages. These pa rameters can now be applied individually in the different countries /9/. Under the guidance of teams involved in the pilot pro ject, Danish, Irish, and Italian foresters have successfully taken aerial inventories and it is expected that other countries will follow their example in the near future /5/.

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