Raichan Izzati, 2019. Kajian Kesesuaian Lahan dan Pengembangan Kopi Arabika Rakyat di Kabupaten Gayo Lues. Tesis Magister, Program Pascasarjana Universitas Syiah Kuala, di bawah bimbingan Abubakar Karim dan Teti Arabia. ABSTRAK Kopi Arabika telah lama menjadi komoditas unggulan Provinsi Aceh. Salah satu sentra kopi Provinsi Aceh adalah Kabupaten Gayo Lues. Untuk mengembangkan kopi Arabika di Kabupaten Gayo Lues dapat dilakukan penambahan luas areal penanaman pada lahan-lahan yang sesuai. Analisis kesesuaian lahan merupakan metode untuk mendapatkan lahan-lahan yang sesuai dimaksud. Penelitian ini bertujuan untuk mengkaji kesesuaian lahan kopi Arabika yang telah ditanami petani maupun pengembangan kopi Arabika, dan menetapkan satu atau lebih karakteristik lahan sebagai penentu tinggi-rendahnya produktivitas kopi Arabika di Kabupaten Gayo Lues. Penelitian ini dilaksanakan di Kabupaten Gayo Lues sejak Juli 2018 hingga Januari 2019 dengan menggunakan metode deskriptif kuantitatif melalui survai lahan serta melakukan analisis terhadap data dan informasi yang didapatkan di lapangan serta analisis contoh tanah di laboratorium. Simpulan penelitian ini adalah kopi Arabika yang telah ditanami petani dengan luas lahan 1.724,41 ha termasuk pada kelas kesesuaian lahan S2 dan kelas kesesuaian lahan S3. Areal yang dapat dikembangkan kopi Arabika dengan luas lahan 31.192,93 ha termasuk pada kelas kesesuaian lahan S2 dan kelas kesesuaian lahan S3. Karakteristik lahan sebagai penentu tinggi-rendahnya produktivitas kopi Arabika di Kabupaten Gayo Lues adalah ketinggian tempat (X1), kemiringan lereng (X2), kedalaman efektif (X3), C-organik (X10), dan P-tersedia (X14) sesuai bentuk formula Y2 = 161416,475 – 27310,656X1 – 13,66695X2 + 23467,469X3 + 140,659X10 + 219,016X14. Kata Kunci : kesesuaian lahan, kopi Arabika rakyat, Kabupaten Gayo Lues Raichan Izzati, 2019. Study of Land Suitability and Development of Arabica Coffea L. in Gayo Lues District. Thesis, Postgraduate Program of Universitas Syiah Kuala, under supervision of Abubakar Karim and Teti Arabia. ABSTRACT Arabica coffee has long been a leading commodity in Aceh Province. One of the coffee centers in Aceh Province is Gayo Lues district. To develop Arabica coffee in Gayo Lues district, it could be generated by increasing the planting area on suitable lands. The Land suitability analysis was a method to provide the suitable land. This study aims to examine the suitability of Arabica coffee land that has been planted by farmers and to develop Arabica coffee, as well as to treasure one or more land characteristics as determinants of the high-low productivity of Arabica coffee in Gayo Lues district. This research was conducted in Gayo Lues district from July 2018 to January 2019 by using quantitative descriptive method through land survey. Furthermore, in the same time the researcher analyzed the data and information was obtained in the field as well as analyzed the data of soil from laboratory analysis. The result of the study indicated that Arabica coffee has been planted by farmers in the area of 1,724.41 hectares, which is categorized in land suitability of S2 (moderately suitable) and land suitability of S3 (marginally suitable). The area could be developed for planting Arabica coffee with areas of 31,192.93 hectares, which is categorized in land suitability of S2 (moderately suitable) and land suitability of S1(highly suitable). The land characteristics defined as determinants of the high-low productivity Arabica coffee in Gayo Lues district is altitude place (X1), slope (X2), effective soil depth (X3), C-organic (X10), and P-available (X14) form a formula Y2 = 161,416.475 – 2,7310.656X1-13.66695X2 + 23,467.469X3 + 140.659X10 + 219.016X14. Keyword: Land Suitability, Arabica Coffea L., Gayo Lues District