Special UNISPACE III volume

Marsteller, Deborah

Bibliographic data

Monograph

Persistent identifier:: 856485039

Author:: Marsteller, Deborah

Title:: Special UNISPACE III volume

Sub title:: including: ISPRS Workshop on "Resource Mapping from Space", ISPRS-EARSeL Workshop on "Remote Sensing for the Detection, Monitoring and Mitigation of Natural Disasters", ISPRS-NASA Seminar on "Environment and Remote Sensing for Sustainable Development", July 1999, Vienna, Austria

Scope:: IV, 170 Seiten

Year of publication:: 1999

Place of publication:: Coventry

Publisher of the original:: RICS Books

Identifier (digital):: 856485039

Illustration:: Illustrationen, Diagramme, Karten

Language:: English

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

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:: Monograph

Collection:: Earth sciences

Chapter

Title:: ISPRS Workshop on "Resource Mapping from Space"

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: LANDSCAPE CHANGES IN SLOVAK REPUBLIC 1970's - 1990's. Jan Feranec, Jan Otahel. Marcel Suri. Tomas Cebecauer

Document type:: Monograph

Structure type:: Chapter

International Archives of Photogrammetry and Remote Sensing. Vol. XXXII Part 7C2, UNISPACE III. Vienna. 1999 65 I5PR5 UNISPACE 111 - ISPRS Workshop on “Resource Mapp ing from Space ” 9:00 am -12:00 pm, 22 July 1999, VIC Room B Vienna, Austria ISPRS represented the auxiliary etalon. Aggregated CLC90 data with the Landsat MSS were visualised in the right window. CLC70 database was created gradually, polygon after polygon, based on the identified shape and size changes of the corresponding land cover classes. Identified change in CLC70 database was accepted only in case if the area of the changed polygon was larger than 4 hectares. Identification also respected the requests of spatial characteristics of the generated database in the sense of the CLC project methodology, i.e. the resulting polygon had to comply with the criterion of the minimum area 25 hectares and the minimum width 100 metres. In this stage also the original CLC90 database was revised while the occasional corrections (modifications) of the original CLC90 database were also realised in the newly created CLC70 database. Mosaicking of the individual map segments of CLC70 resulted in a single data layer. While aggregating the segments the control procedures and correction of physical and logical integrity of the data were carried out using the Avenue scripting language. These included elimination of the polygons not complying the area request, correction of aggregation inconsistencies, etc. In the next stage the CLC70-90 change database was created by overlying the CLC70 and CLC90 data sets. The resulting database was tested on presence of polygons not complying with criterion of the smallest 4 ha area. The polygons smaller than 4 hectares were excluded following the border tests while the condition was to preserve the original structure of CLC90. The only exception of the quoted criterion were the polygons artificially limited by the state border. 2.2 Methodology of the landscape changes ANALYSIS The classes of CLC70-90 change databases were reclassified into 7 types of landscape changes according to the conversion table (see Tab. 1). The statistics - contingency tables (see Tab. 2) - were calculated using standard GIS cross-tabulation procedures, the first expressing the changes in hectares, the second the same in percentage. They express thematic re-distribution of individual classes within the studied period. Spatial intensity of landscape changes was expressed by a set of 8 maps (7 maps - individual type of changes, 8 map depicts the total area of all 7 types of changes), at original scale 1:3 million. The maps show spatial extent of changes recalculated to a grid with resolution 1.5 x 1.5 km. The four intervals of the landscape changes spatial intensity were considered. (Feranec et al. 1999): 1. 76-100 % of the grid cell area was changed - full change, 2. 25-75 % substantial change, 3. 1-24% minor change, 4. 0 % “ - no change. Tab. 1 Conversion table (Feranec et al. 1999) no change intensification of agriculture extensification of agriculture urbanisation (industrialisation) -except transition to class 131 enlargement (exhaustion) of natural resources -transition to class 131 onlv affore staton de fore stafion other antropogenic causes (recultivations, dump sites, unclassified change, etc.) CLC - levell 1 artificial areas 2 agricultural areas 3 forest and semi-natuial areas 4 wetlands 5 water bodies CLC nomenclature (Hevmann et al. 1994) 1. Artificial surfaces 1.1. Urban fabric 1.1.1. Continuous urban fabric 1.1.2. Discontinuous urban fabric 1.2. Industrial, commercial and transport units 1.2.1. Industrial or commercial units 1.2.2. Road and rail networks and associated land 1.2.3. Port areas 1.2.4. Airports 1.3. Mine, dump and constructions sites 1.3.1. Mineral extraction sites 1.3.2. Dump sites 1.3.3. Construction sites 1.4. Artificial, non agricultural vegetated areas

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