Impact Of Land Use Land Cover Change On Land Surface

For the past decades, an increase 111 population pressure, policy, institutional andrneconomic development influences caused changes in LULC of city and periphery. Thisrnwas mainly due to urban expansion and densification. The effects of land use and landrncover changes have impacted the urban climate by altering the surface energy and waterrnbalance. Although there are few studies on land use and land cover changes in AddisrnAbaba, studies related to the impact of such change on urban climate are missing. As arnresult, this study tries to examine the influence of LULCC on urban climate in AddisrnAbaba city from 1986 to 2010 by analyzing Landsat TM satellite data, meteorologicalrnrecords, and census data by integrating remote sensing and GIS technologies. The resultsrnshow that grass land, agricultural land, forest land and bare land declined by 43.32km2rn,rn16.03km2rn, 9.74km2rn, and 9.65 km2rn, respecti vely, on the other hand, built-up areas wasrndramatically expanded from 100.13k.m2 in 1986 to 180.13km2 in 2010 that is almost tworntimes from initial year. Changes in LULC were accompanied by changes in LST. Thernaverage LST in 1986 was 28.88°C and it increased to 30.88°C in 2010 with average valuern2°C. The change in LST was mainly associated with changes in impervious surface andrnin vegetation abundance. In addition, the annual average air temperatures increase in thernentire Addis Ababa city by 1.5 °C over the study period. Therefore, clear and effectivernpolicy with necessary institutional set up is important to guide the growth of city.rnKey words: Remote sensing, GIS, LST, LULC, Addis Ababa

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