Judul: Analysis of Subsector Potential of Food Crops Sub-sector in Fulfilling Food Needs in East Java Province
Abstrak: Subsektor tanaman pangan menjadi subsektor andalan dalam pembentukan PDRB sektor pertanian di Provinsi Jawa Timur yang selama tiga tahun terakhir kontribusinya menurun. Subsektor ini memiliki tantangan yang berat dalam perannya mencukupi kebutuhan pangan serta mempertahankan pertumbuhan dan daya saingnya terhadap subsektor lain. Penelitian ini bertujuan untuk : 1) menganalisis potensi subsektor tanaman pangan sebagai basis (unggulan) di Provinsi Jawa Timur, 2) menganalisis kinerja subsektor tanaman pangan di Provinsi Jawa Timur dan 3) menganalisis proyeksi produksi dan konsumsi beras di Provinsi Jawa Timur di masa mendatang. Metode yang digunakan dalam penelitian ini adalah analisis Location Quotient (LQ), analisis shift share dan analisis ARIMA. Hasil penelitian menunjukkan bahwa : 1) subsektor tanaman pangan termasuk subsektor basis (unggulan) bersama dua subsektor lainnya yakni subsektor peternakan dan perikanan, 2) subsektor tanaman pangan memiliki pertumbuhan lambat dengan daya saing kurang baik dibandingkan subsektor yang sama ditingkat nasional, dan 3) proyeksi lahan sawah diprediksi mengalami penurunan selama tahun 2023-2024. Penurunan ini akan menyebabkan roduksi dan ketersediaan beras di Provinsi Jawa Timur berkurang sampai tahun 2024 meskipun kondisinya tetap surplus., The food crops sub-sector has become the mainstay sub-sector in the formation of the agricultural sector GDRP in East Java Province which its contribution is decreasing last three year. This sub-sector has a formidable challenge in meeting the food needs and maintaining its growth and competitiveness against other sub-sector. This study aims to: 1) analyze the potential of the food crop sub-sector as the basis (primary) in East Java Province, 2) analyze the performance of the food crops sub-sector in East Java Province and 3) analyze the projection of rice production and consumption in East Java Province in the future. Furthermore, the method used in this study was Location Quotient (LQ) analysis, shift-share analysis and ARIMA analysis. The results shows that: 1) the food crops sub-sector is included in the basis (primary) sub-sector along with two other sub-sectors, which are the livestock and fishery sub-sector, 2) the food crops sub-sector has slow growth with less competitiveness than the same sub-sector at the national level, and 3) the projected demand for rice fields area is predicted to decrease in 2023-2024. the decrease will cause in reduced rice production and availability until 2024 although the condition remains in surplus.
Keyword: Location Quotient, Shift share, Base (primary), Rice, Projection

Judul: Arahan Pemanfaatan Ruang Provinsi Jawa Timur dalam Mendukung Perannya sebagai Lumbung Pangan Nasional
Abstrak: Menurut Rencana Pembangunan Jangka Menengah Daerah Jawa Timur 2019-2024, Jawa Timur merupakan lumbung pangan dan penyumbang terbesar ketersediaan pangan nasional, Hal ini erat kaitannya dengan sektor pertanian. Di sisi lain, Jawa Timur merupakan provinsi dengan jumlah penduduk terbesar kedua di Indonesia. Selama sepuluh tahun terakhir, pertumbuhan penduduk Jawa Timur sebesar 0,79 persen menyebabkan tekanan terhadap sumberdaya lahan dan menimbulkan persaingan pemanfaatan lahan. Hal ini tentu akan membahayakan status Jawa Timur sebagai lumbung pangan nasional. Tujuan dari penelitian ini adalah mengidentifikasi perubahan tutupan lahan di Provinsi Jawa Timur dari tahun 2000 sampai dengan tahun 2020, memprediksi tutupan lahan tahun 2031 dengan skenario BAU (Business as Usual), konservatif, dan RTRW, menganalisis hubungan pemanfaatan ruang dengan Rencana Tata Ruang Wilayah, dan menyusun arahan pemanfaatan ruang Provinsi Jawa Timur dalam mendukung perannya sebagai lumbung pangan nasional. Metode yang digunakan dalam penelitian ini adalah teknik overlay untuk mengidentifikasi perubahan tutupan lahan dan keselarasannya dengan rencana tata ruang; Land Change Modeler untuk memprediksi tutupan lahan tahun 2031, dan analisis deskriptif. Hasil penelitian menunjukkan bahwa perubahan tutupan lahan pertanian yang paling umum terjadi di Jawa Timur adalah; dari hutan ke pertanian lahan kering, sawah dan semak ke pertanian lahan kering. Berdasarkan prediksi tutupan lahan menggunakan Land Change Modeler, lahan pertanian akan semakin berkurang bersamaan dengan bertambahnya luasan lahan terbangun. Melalui penelitian ini, kami menyusun arahan pemanfaatan ruang Jawa Timur untuk melindungi lahan pertanian produktif dan memastikan provinsi ini tetap menjadi lumbung pangan nasional di masa depan., According to the East Java Regional Medium-Term Development Plan (RPJMD) 2019-2024, East Java is a food barn and the largest contributor to national food availability, and this is closely related to the agricultural sector. On the other hand, East Java is the province with the second-largest population in Indonesia. During the last ten years, East Java's population growth was 0.79 percent, which caused pressure on land resources and caused rivalry in land use utilization. This will undoubtedly jeopardize East Java's status as a national food storage facility. The purpose of this research are to identify land cover changes in East Java Province from 2000 to 2020 and conduct land cover prediction in 2031 with BAU (Business As Usual), conservative, and spatial plan (RTRW) scenarios, as well as to analyze the relationship between spatial usage and the spatial plan and develop directions for spatial utilization of East Java Province in supporting its role as a national food barn. The method used in this research are the overlay technique to identify land cover changes and alignment with RTRW; Land Change Modeler for land cover prediction; and descriptive analysis. The results showed that the most common land cover changes that occurred in East Java are from forest to dry land agriculture, and rice fields and shrubs to dry land agriculture. Based on the land cover prediction model using Land Change Modeler, in the future, agricultural land will tend to decrease followed by increasing built-up areas. Through this research, we arrange a direction for spatial utilization of East Java to protect the productive agricultural land and to ensure that this province remains a national food barn in
Keyword: pertanian, Land Change Modeler, prediksi tutupan lahan, RTRW

Judul: Hydroxyapatite-Chitosan Composite Coating on Stainless Steel 316 to Improve Corrosion Resistance
Abstrak: Metals that were used in bone implantation should have good corrosion resistance that were not easily corroded when implanted into the body. Metal corrosion resistance of stainless steel 316 can be enhanced through the metal coating by hydroxyapatite-chitosan composite with composition ratio of hydroxyapatite (gram) and chitosan 3% (mL) 0.2:0, 0.2:0.1, 0.2:0.5, 0.2:1.0, and 0.2:1.5. Besides improving the corrosion resistance of metal, the presence of chitosan also maintain the position of hydroxyapatite on metal surfaces. Corrosion resistance increases with increasing amount of chitosan added and the best composition of hydroxyapatite-chitosan composite was 0.2:1.0.
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