PERUBAHAN PENUTUPAN LAHAN DI DAS TABUNIO,

KABUPATEN TANAH LAUT, KALIMANTAN SELATAN

Land Cover Change In Tabunio Watershed,

Tanah Laut Regency, South Kalimantan Province

Dwi Tratna Wibawa, Abdi Fithria, Khairun Nisa

Jurusan Kehutanan

Fakultas Kehutanan Universitas Lambung Mangkurat

ABSTRACT.The objectives of this study are (1) analyzing the land cover class, (2) analyzing the changes of land cover area in Tabunio Watershed from 2000 to 2018 and (3) analyzing the land cover of Tabunio Watershed in 2018 which is included in the forest area. The data used are watershed boundary spatial data from the Ministry of Environment and Forestry Directorate of PDAS-HL, spatial data of land cover resulting from interpretation of landsat images from the Directorate of IPSDH Directorate General of Planning and Environmental Planning in 2000, 2003, 2006, 2009, 2012, 2015 and 2018 and spatial data on forest areas from the Ministry of Forestry. Classification of land cover class by the modification method from 23 classes to 11 classes namely Forest, Plantation Forest, Open Land, Mangrove, Plantation, Settlement, Dry Land Agriculture, Rice Fields, Shrubs, Pond and Water Bodies. Data processing through geographic information systems (GIS) software ArcGis 10 and Exel. This research method uses overlapping and descriptive analysis. Land Cover Conformity Test Results an accuracy rate of 91%. The results of the analysis of land cover change show that the plantation land cover class experienced the greatest rate of change during the period of 2000-2018 which increased by an area of 10.791,70 hectares (2.169,16%). The results of the analysis land cover of Tabunio Watershed in 2018 which is included in the forest area show that Dryland Agriculture covering 4.091.48 hectares (36.31%) is the largest land cover class found in all forest area functions.

Keywords: Watershed; GIS; Land Closing Classes; Suitability of Land Closure; Change in Land Closure; Forest Area

ABSTRAK. Tujuan penelitian ini untuk (1) menganalisis kelas penutupan lahan, (2) menganalisis perubahan luas penutupan lahan DAS Tabunio dari tahun 2000 sampai dengan tahun 2018 serta (3) menganalisis penutupan lahan DAS Tabunio tahun 2018 yang termasuk dalam kawasan hutan. Data yang digunakan yakni data spasial batas DAS dari Kementerian Lingkungan Hidup dan Kehutanan Direktorat PDAS-HL, data spasial penutupan lahan hasil penafsiran citra landsat dari Direktorat IPSDH Direktorat Jenderal Planologi dan Tata Lingkungan tahun 2000, 2003, 2006, 2009, 2012, 2015 dan 2018 serta data spasial kawasan hutan dari Kementerian Kehutanan. Klasifikasi kelas penutupan lahan dengan metode modifikasi dari 23 kelas menjadi 11 kelas yakni Hutan, Hutan Tanaman, Lahan Terbuka, Mangrove, Perkebunan, Permukiman, Pertanian Lahan Kering, Sawah, Semak Belukar, Tambak dan Tubuh Air. Pengolahan data menggunakan Sistem Informasi Geografis (SIG) software ArcGis 10 dan Exel. Metode penelitian ini menggunakan metode tumpang susun dan analisis deskriptif. Hasil Uji Kesesuaian penutupan lahan diperoleh angka akurasi sebesar 91 %.. Hasil analisis perubahan penutupan lahan memperlihatkan bahwa kelas penutupan lahan perkebunan mengalami laju perubahan terbesar selama kurun waktu 2000-2018 yakni meningkat seluas 10.791,70 hektar (2.169,16%). Hasil analisis penutupan lahan DAS Tabunio tahun 2018 yang termasuk dalam kawasan hutan memperlihatkan bahwa Pertanian Lahan Kering seluas 4.091,48 hektar (36,31%) merupakan kelas penutupan lahan terbesar yang terdapat di semua fungsi kawasan hutan.

Kata kunci: DAS; SIG; Kelas Penutupan Lahan; Kesesuaian Penutupan Lahan; Perubahan Penutupan Lahan; Kawasan Hutan.