| Summary: | Dry land is a land that was never flooded or under water in a small part of the
year, which consists of dry land lowland and upland plateau. Dry land generally located
at mountainous region characterized by undulating topography and a receiving area, and
impregnation rainwater which is then channeled to the lowlands, either through the soil
surface (river) as well as through a network groundwater earth. Dry land agriculture is
the largest foreign exchange earner in Bantaeng Regency.
This study aims to : (1) analyzing the spatial distribution of dry land using remote
sensing and GIS technology in Bantaeng Regency, (2) analyzing dry land regions
utilizing remote sensing technology and GIS in Bantaeng Regency. Digital image
processing techniques used is the composite image color, contrast stretching, supervised
classification Support Vector Machines (SVM) method and slope classification. Method
in this study is a combination of digital analysis of Landsat 5 TM using supervised
classification SVM based on knowledge based classification with the results of field
work and spectral reflectance Landsat 5 TM were processed using Geographic
Information System (GIS) in the making of maps the physical characteristics of the land
(landform, slope, and present land use).
Inhibiting factors dry land of the land capability is soil type, soil texture, soil
depth, rock abundance, threats flooding, organic content, soil erosion and slope. Each of
these factors inhibitors, unless the slope, interpreted manually from Landsat 5 TM and
ASTER GDEM 2 images. Method of determining the dry land acquired
based on the analysis of rainfall, land capability and present land use. The area of dry
land spreading in the subdistrict of Gantarangkeke, Tompobulu, Eremerasa, Bantaeng
and Uluere which total area covered is 20.643,986 ha and non upland areas are in the
subdistrict of Pajukukang, Bantaeng, Bissappu and Eremerasa which total area covered is
19.119,146 ha. The results of analysis show that the spreading in the dominant upland
areas with heavy normal rainfall with the land capability II-IV and the present land use in
the domination mixed farms and farmland.
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