Geographic Information System-Based Spatial Analysis of Agricultural Land Suitability in Yogyakarta

Abstract

Agricultural sector is the main economic activity of the society and also the source of people economy strengthening. The purpose of this study was to determine the priority direction of the development of the agricultural sector, mainly to determine the most appropriate types of commodities for each land unit that serve as local agricultural base. AHP method was integrated with GIS technique to analyze as well as to create land suitability maps for food crops. The results showed that 25.4 percent of lands in Yogyakarta is highly suitable for rice, while only 16 and 2 percent, respectively, is suitable for groundnut and corn. The limiting factors to the land suitability for these three commodities were plant roots condition, nutrients availability, nutrient retention, and soil condition. Suitable lands for rice, groundnut and corn were distributed at Ledok Wonosari, Middle Slope of Merapi, Lower Slope of Merapi and Batur Agung. Abstrak Sektor pertanian adalah kegiatan ekonomi utama masyarakat dan juga sumber penguatan ekonomi rakyat. Tujuan dari penelitian ini adalah untuk menentukan arah prioritas pengembangan sektor pertanian, terutama untuk menentukan jenis komoditas yang paling tepat pada setiap unit lahan / wilayah yang berfungsi sebagai basis pertanian lokal. Pene-litian ini dilakukan dengan menggunakan kombinasis analisis fisik dan sosial yaitu model AHP berbasis Sistem Informasi Geografi (SIG). Hasil penelitian menunjukkan bahwa 25,4 persen dari tanah di

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