Teledetekcyjna analiza sukcesji brzozy omszonej {Betula pubescens Ehrh.) na terenie Parku Narodowego Thingvellir, Islandia

• Autorzy: Strzeliński P. , Wencel A.

Warianty tytułu

EN

Remotely sensed analysis on succession of common white birch (betula pubescens ehrh.) In Thingvellir National Park, Iceland

• Języki publikacji: PL

Abstrakty

EN

The paper presents the use of satellite remote sensing to vegetation succession analysis in Thingvellir National Park in Iceland. The research had the below aims: 1) analysis of succession of common white birch (Betula pubescens Ehrh.) 2) an assessment of quantity of birch trees 3) classification of basic types of vegetative cover 4) analysis of possibilities of use of remote sensing data in Thingvellir National Park. The paper encompassed analysis and interpretation of SPOT5 satellite images of the park and its surroundings (taken in 2003) and digital maps produced on the basis of aerial photographs and field observations (from the years 1955.1978). The analysis has covered fenced part of the park (5002 ha). Within the framework of field work, decision of number and kind of vegetation classes was made. As much as 4 classes were fixed and verified in the field . grass cover, moss cover, broad-leaved/birch cover, coniferous cover. The maps of the scale: 1:50 000 i 25 000 were made, and then verified in the field. The vegetation classes constituted respectively: grass cover . 1.0% of the park area, moss cover . 19.0%, broad-leaved trees/birch . 54%, coniferous trees . 0.3%. There was also the class .others. (25.7% of the park area), which encompasses all areas having no meaning for final results and areas which are impossible to classify. Selected data concerning birch (on the basis of SPOT5 and field control) were compared to data from the years 1972.1978. Unfortunately, precise quantity comparison was impossible due to differences in accuracy of data (date from the years 1972.1978 are less precise). Hence only area comparison was made. In the years 1955.2003 area covered by birch did not changed considerably, still it is the dominant class in respect of area. Presently common white birch covers 2705 ha which is 54% of Thingvellir National Park area within borders from before 2004 and 66% of land area. The project concerned the forests and birch thickets in Thingvellir National Park commissioned by Skógrćkt Ríkisins and RALA (Institut of Forest and Agricultural Research). The main works on project have been done from the beginning of July to the end of September 2005.

Słowa kluczowe

PL

teledetekcja; brzoza omszona; Park Narodowy Thingvellir; Islandia

EN

remote sensing; white birch; Thingvellir National Park; Iceland

• Wydawca: Polskie Towarzystwo Informacji Przestrzennej
• Czasopismo: Roczniki Geomatyki
• Rocznik: 2006
• Tom: T. 4, z. 2
• Strony: 139--145
• Opis fizyczny: Bibliogr. 7 poz.

Twórcy

autor

Strzeliński P.

autor

Wencel A.

• Akademia Rolnicza w Poznaniu,

Bibliografia

• 1. Aradottir Á.L., Eysteinsson T., 2005: Restoration of birch woodlands in Iceland. (In:) Standurf J.A., Madsen P. (red.): Restoration of boreal and temperate forests. CRC Press. Boca Raton: 195-209.
• 2. Arnalds Ó., Thorsteinsson I., 1992: The vegetation and soils of the Thingvallavetn area. Oikos. Vol: 64: 105-116.
• 3. Einarsson M.Á., 1992: Clilmatic conditions of the Thingvallavatn area. Oikos. Vol. 64: 96-104.
• 4. Jónasson P.M., 1992: The ecosystem of Thingvallavatn: a synthesis. Oikos. Vol. 64: 405-434.
• 5. Jónsson T.H., 2004: Stature of Sub-arctic Birch in Relation to Growth Rate, Lifespan and Tree Form. Annals of Botany. Vol. 94: 753-762.
• 6. Saemundsson K., 1992: Geology of the Thingvallavatn area.-Oikos. Vol. 64: 40-68.
• 7. Thingvellir National Park Management Plan 2004 to 2024.