Geographia Technica, No. 1/2008, pp. 7 - 14

THE LAND USE ANALYSIS IN NICOLINA CATCHMENT’S AREA USING G.I.S TECHNIQUES

R. I., Cojocaru, C. C., Stoleriu, Oana Mihaela Stoleriu, Adina Mosnegutu

ABSTRACT - Land use, as a part of the geo-economic system has important structural variations over a short period of time. The Nicolina hydrographic basin is intensely modified by the urban pressure of nearby city of Iaşi. This pressure has become more and more intense in the last decade as a result of growing constructed area towards the “green” margins of the city, due to a real exodus of the population in an environment less polluted. The analysis of the land use changes is made using the G.I.S techniques. The methodology consists in vectorising the land use structures from cartographic maps DTM (1:25000) and also by remote sensing on satellite images from year 2000 (LANDSAT ETM). We compared online the ANCPI aerial-photos by accessing the site www.ancpi.ro from our area of interest. In our classification we have been analyzing the polygon with a minimum of 100 m2; this limit was related to the resolution satellite images. Our final purpose is to evidence the major changes of land use after 1989 and to correlate this with geomorphological and anthropical factors. By that, we intend to show the real problems regarding land use in the Nicolina catchment’s area caused principally by the growing of the urban area.

Keywords: Nicolina basin, hydrography, land use, analysis, LANDSAT ETM, remote sensing

Cojocaru_Land_use_Nicolina_Catchment_GIS.pdf