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important due to limitation of land, while land necessity is increasing. In
order to achive the sustainable city / region, the attention to natural
capabilities on water conservation and flood protection should be adapted
on RTRW. The RTRW should prevent the exsisting capabilities and
increase when the capabilitis are less.
Using simulation of model as tool of analysis in the spatial planning
process, we can see the city/ region capabilities on water conservation and
flood protection, and then make decision on spatial use of the city / region.
The simulation in this study was applied in the City of Batam, which was
focused in Batam Island by using data on the year of 2000. The results of
the simulation shows that regions which are categorized as having high and
very high capabilities on water conservation occupied only 13,36%, while
those that have high and very high capabilities on flood protection is about
23,75% of the island area. By applying of reboisation scenarios, the
regions that have high and very high capabilities on water conservation can
be increased to become 56,97% and those that have high and very high
capabilities on flood protection increase to 53.58% of the island area.
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