GEOGRAFSKI INFORMACIJSKI SISTEMI V SLOVENIJI 2005–2006

GEOINFORMACIJSKA PODPORA VODNI BILANCI PORE^JASAVINJE V OBDOBJU 1971–2000Peter Frantar in Mojca DolinarAgencija Republike Slovenije za okoljeVojkova cesta 1B, 1000 Ljubljanapeter.frantar@gov.si, m.dolinar@gov.siGIS v Sloveniji 2005–2006, 95–102, Ljubljana 2006UDK: 556.1:659.2:004(497.4)"1971/2000"IZVLE^EKGeoinformacijska podpora vodni bilanci pore~ja Savinje v obdobju 1971–2000Vodna bilanca pore~ja Savinje 1971–2000 je bila izdelana v okviru projekta Vodna bilanca Slovenije z namenompreverjanja uporabljenih metod za korekcijo padavin in pretokov ter za prostorsko interpolacijopadavin in izhlapevanja. Pore~je Savinje smo razdelili na hidrometri~na zaledja vodomernih postaj ter z analizopodatkov v geoinformacijskem okolju izvedli primerjavo pretokov, padavin in izhlapevanja. V skupnemregionalnem pogledu se podatki posameznih elementov vodnega kroga dobro skladajo. S tem smo potrdiliuporabnost privzetih metod, ki jih bomo uporabili za izra~un vodne bilance za celo dr`avo.KLJU^NE BESEDEvodna bilanca, padavine, izhlapevanje, odtok, geografski informacijski sistem, prostorska interpolacijaABSTRACTGeoinformational support for the 1971–2000 Savinja river water balanceWater balance for Savinja watershed was performed in order to validate the methods for precipitation andrunoff corrections and methods for spatial interpolation of precipitation and evaporation. Savinja watershedwas divided into the hydrometrical units created upon existing water dividing lines. Water balanceelements: precipitation, evaporation and runoff were analyzed and compared in GIS. The results were promising:water balance for the whole Savinja watershed was unbiased and the results proved that the selectedcorrection and interpolation methods are suitable for water balance calculation on the entire territory ofSlovenia.KEYWORDSwater balance, precipitation, evapotranspiration, runoff, geographical information system, spatial interpolation95