POLA PERUBAHAN PENGGUNAAN LAHAN DI KOTA SEMARANG TAHUN 1980-2000

Landuse Changing Patem In Semarang 1980-2000

Abstract

Town is very dynamic  area. Growth of population, both natural and migration (urbanization), need area for the settlement and their activities.  Neccessity of area for settlement can't  be avoided. As a result,  there is a landuse changing  from non settlement  area (wet field, dry field.swamp,  pond) to settlement area. This change will influence the hydro system balance in Semarang, for instance the extending of flooding area, etc. This research tries to find the characteristic  oflandusechange   in Semarang. The charateristic involving  how is pattern, process, intensity, and tendency. Pattern of landuse changing is sequence of using area before it became the settlement. Process of landuse chane is by using how the population are able to settle. Tendency is degree of land use change  speed. This reseach methode is secondary  analysesmethode, that is compare the statistic data of the landuse  and map in  1980  and 2000. The sampling is by purposive random sampling rnethode. Purpusive is used  so that all subdistrics  in suburban are represented.  The sample area is the from percil in certain coodinate. Result of this research shows that there is landusechanging  rapidly that is decrease in the width of wet field, dry field,  swamp and pond. On the other hand, there is increase  in width   of settlement area and other dry land with intensity 232 ha every years. Wet field decrease  131, 7 ha every years, swamp and pond 31 ha, and dry field 24,2 ha every years. In actually this landuse changing  pattern is out of government  policy. Semarang government's  policy  instrucs ttie settlement  by using  non productive  land, but intead most of wet field are conversed.   However, wet field is water habitat that is most potential. Tendency of settlement growth is more focus on accesibilit y aspect and available city's  facilities only. Number of settlement are built on land which  not suitable,  such labile  land, or high slope. It proves that the government  control function is weak. The conclusion from this research that Janduse changing has to be controlled restrainded,so it will not cause the bad effect in Semarang.  Width the wet field   is 10 % by width town,  must be conservation.  Because wet field has ecology value and economic value that is rice production and absorb labour in agricultural  sector. Ther2 e fore, function  role of government  controll must be actived.