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Aktualizacja leśnej mapy numerycznej z wykorzystaniem archiwalnych zdjęć z satelity IKONOS

Tomalski L.

Roczniki Geomatyki

2006

T. 4, z. 4

113-117

In February 2006 the Director General of the State Forests appointed a task team for a test project to examine the use of satellite imagery. The commissioned task was to test the possibility of updating forest digital maps with the use of satellite images as well as to test the use of those images for other purposes. In the project, high resolution satellite images were used made by IKONOS satellite and the ortophotomap produced of those images. The test positively verified the possibility to use the ortophotomap for updating forest digital maps. In the next step it was decided to test, whether the ortophotomap could be the source data to verify the accuracy of the existing vector maps and to make new ones. To do that forest compartments of two forest districts picked by chance were digitalized and then the geometric shapes of objects created in this way were compared with the same objects on the existing maps. In conclusion of the test it was ascertained that the use of the ortophoto map made of high resolution satellite imagery from IKONOS satellite could improve accuracy but the imagery itself is not sufficient data source to produce all elements of the forest digital map.

Dostosowanie istniejących w nadleśnictwach map numerycznych do standardu LMN

Tomalski L.

Roczniki Geomatyki

2004

T. 2, z. 4

81-86

State Forests constitute more than 80% of all forests in Poland. Digital maps began to be made in the State Forests in mid 1990s. By subsequent regulations No. 23/1998 and No. 74/2001 released by the Director General of the State Forests first a temporary standard and then the final digital forest map standard (LMN) was introduced, defining the system of coordinates, the form, structure and scope of map information for forest districts. In this connection, a need arose to adapt the digital maps existing in the forest districts to the LMN standard. Harmonization of digital maps existing in the forest districts to the DFM standard is a one-time operation, including: 1) conversion of layers of existing maps to the structure determined in the standard, 2) updating of the content of the map. It was envisaged to complete this work in 2004, which would make digital forest maps a valuable instrument supporting management of the State Forests.