Land Cover Map GIS Operation

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3.5.1 Land Cover Map

In order to deliniate the research area related to which area are used for conservation and non conservation development area, then the land cover data is needed. To obtain this data, we have to classified the land cover classification from the landsat data. This process was done using supervised classification technique to transform multisppectral image data into thematic information classesseveral types of land cover. In this research, types of land cover are classified into 11 classes. Supervised classification is one of two methods used to transform multispectral image data into thematic information classes. In supervised classification, the identity and location of feature classes or cover types are known beforehand through field work, analysis of aerial photographs or other means. A simplified procedure for performing a supervised classification is as follows Figure 3 : Figure 3 Supervised Classification Procedure Diagram Opening Image corrected Landsat TM Set the image to 542 band composite Edit Create Region Save Classification Supervised Classification Calculate Statistic Change psedo to classification EditClass region color and name Choose Select Training Area Load the result of Supervised Classification Save Training Area Save Image Save Final Result 24 To delineate which regions including cultivation and non-cultivated areas conservation areas, then the classification of research area which we have before, has to be overlay with Law Number 26 of 2007 concerning Spatial Planning.

3.5.2 GIS Operation

• Peatdepth Map To obtain the spread of peatdepth in research area, peat depth data have to be interpolated to obtain peatdepth map. This peat depth map, can be used in spatial analysis process. In this study, the interpolation result has been obtained from EMRP Master Plan Study Bappeda Central Kalimantan Province. Then to classify the peatdepth, we have to compare with Presidential Instruction Number 2 Year 2007 concerning Acceleration of Rehabilitation and Revitalization Peat Land Development Area. • Generate Rainfall Map Rainfall map of research area was generated from analyzing process of rainfall map using Thiessen Polygon method which was obtain from climate data in BMG. Thiessen polygon distributed areas into polygons where each polygon bound predictably one point that has data. This method can be performed on areas that have a measuring rainfall distribution is not uniform non uniform taking into account the influence area of each measuring. In this way, considered that the rainfall data from a place of observation can be used for the drainage area around the place. Principally, thiessen polygon’s step are measuring stations are plotted on a map then measuring points are connected to each others outer rain. the next step is each outer station connected to the closest station and find the midpoint of each line among stations, then draw a line perpendicular to the line connecting the midpoint obtained. 25 • Digitize Soil Map Soil type data that was obtained from “Balai Besar Sumber Daya Lahan Pertanian” was a paper map. This paper map has to be digitized to obtain the digital format type of data. This vector data can be used in spatial analysis process. • Digitized GeologicLithologic Map To obtain the digital format of geologiclitologic map for further analysis, the paper map has to be digitized 27

IV. RESULT AND DISCUSSION