ISSN: 2685-8649 1 Jurnal Rekayasa Geofisika Indoensia Vol. 04, No. 01, Tahun 2022 JRGI Moehammad Qhodi Akbar 1 , Pou Anda 1* , Syamsul Razak Haraty 1 1 Jurusan Teknik Geofisika, Universitas Halu Oleo, Kendari, Indonesia E-mail: pou_anda@ymail.com Abstrak Penelitian ini bertujuan untuk mengetahui distribusi nilai sifat fisik tanah yang terdiri dari bulk density, porositas, dan kadar air tanah pada beberapa penggunaan lahan di areal pertanian Kecamatan Ranomeeto. Penelitian dilaksanakan di Kecamatan Ranomeeto, Kabupaten Konawe Selatan pada beberapa lahan sawah, tegalan, dan kebun campuran. Analisis tanah dilakukan di Laboratorium Terpadu Universitas Halu Oleo. Penentuan lokasi pengambilan sampel tanah untuk bahan analisis di laboratorium ditentukan secara acak sehingga diperoleh 15 titik sampel. Sampel yang diambil kemudian dilakukan pengukuran sifat fisika tanah dan dianalisis menggunakan metode deskriptif statistika dan interpolasi kriging dimana metode deskriptif statistika digunakan untuk menentukan karakteristik data hasil pengukuran, sementara metode interpolasi kriging digunakan untuk menghasilkan peta sebaran nilai sifat fisika tanah. Proses interpolasi kriging diawali dengan perhitungan dan pencocokan antara semivariogram observasi dan semivariogram teroritik. Model eksponensial dipilih karena model ini yang paling cocok dan mampu menggambarkan kondisi daerah penelitian. Dari hasil analisis spasial dapat diketahui besaran nilai sifat fisika tanah untuk bulk density berkisar 1.11 sampai dengan 1.61 g/cm3, nilai porositas tanah berkisar 39.05% sampai dengan 57.79%, dan nilai kadar air berkisar 30.21% sampai dengan 54.35%. Kata kunci: Sifat fisik tanah, spasial, interpolasi kriging. Abstract This study aims to determine the distribution of the value of soil physical properties consisting of bulk density, porosity, and soil moisture content in several land uses in the agricultural area of Ranomeeto District. The research was carried out in Ranomeeto District, South Konawe Regency on several paddy fields, dry fields, and mixed gardens. Soil analysis was carried out at the Halu Oleo University Integrated Laboratory. Determination of the location of soil sampling for analytical materials in the laboratory was determined randomly so that 15 sample points were obtained. The samples taken were then measured for soil physical properties and analyzed using statistical descriptive methods and kriging interpolation where statistical descriptive methods were used to determine the characteristics of the measured data, while the kriging interpolation method was used to produce a map of the distribution of soil physical properties values. The kriging interpolation process begins with the calculation and matching between the observational semivariogram and the theoretical semivariogram. The exponential model was chosen because this model is the most suitable and able to describe the conditions of the research area. From the results of spatial analysis, it can be seen that the value of soil physical properties for bulk density ranges from 1.11 to 1.61 g/cm3, the value of soil porosity ranges from 39.05% to 57.79%, and the value of water content ranges from 30.21 % up to 54.35%. Key words: Soil physical properties, spatial, kriging interpolation. PENERAPAN SISTEM INFORMASI GEOGRAFIS (SIG) UNTUK MENGANALISIS PERUBAHAN SPASIAL SIFAT FISIKA TANAH AREAL PERTANIAN KECAMATAN RANOMEETO