| Summary: | In order to increase the agricultural productivity of marginal land areas in
Gunungkidul, the community takes advantage of the drylands for catfish farming.
The productivity is yet to be optimal as the sustainable program. Study using
mapping technology was required to optimize the production of catfish farming. The
purposes of this study was to examine the spatial capacity of the environment, to map
sustainable land use, and to determine the applied technology to develop catfish
farming in Gunungkidul.
We used statistical analysis, scoring and weighting, for potential and existing
variables, which were water quality, water quantity, slope, soil type, rainfall, land use,
and socioeconomic potentials. We overlayed the variables using Geographic
Information System (GIS) application to determine the suitable area for catfish
farming.
We found that, environmental carrying capacity was 71.73% in Baturagung,
76.42% in Ledok Wonosari, and 67.59% in Karst hills. The prioritized land areas for
catfish farming development were 14.02% of the total area of Gunungkidul, with
zones 3.23% located in Baturagung, 7.19% in Ledok Wonosari, and 3.58% in Karst
Hills of the total area of Gunungkidul. The distribution of Pokdakan and existing
technology was not suitable with the state of land potentials. To optimize the
production we suggest that the farming be developed in priority land. The priority of
development of the catfish farming was in Ledok Wonosari, or priority land I,
comprising the sub-districts of Playen, Wonosari, Semanu, Paliyan, Karangmojo,
Semin, and Ngawen. We formulated recommendation that high priority land be
developed through technological intensification, medium priority land be developed
with semi-intensive technology, while non priority land be developed with extensive
technology or as water conservation area.
Keywords: marginal land, environmental carrying capacity, catfish, map overlay
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