Tanah Gambut dan Estimasi Cadangan Karbon di Kabupaten Kutai Kartanegara, Kalimantan Timur
DOI:
https://doi.org/10.35941/jatl.4.1.2021.5792.%25pKeywords:
Cadangan karbon, pemetaan semi detail, gambut.Abstract
Untuk mendapatkan informasi sifat dan karakteristik tanah gambut, Balai Besar Litbang Sumberdaya Lahan Pertanian telah melaksanakan pemetaan tanah gambut dan perhitungan karbon stok pada tingkat semi detail (skala 1:50.000) di Kabupaten Kutai Kartanegara. Metode pemetaan tanah gambut mengacu pada SNI 7925:2013, SNI 8473:2018, dan Juknis Pemetaan Tanah Semidetail skala 1:50.000. Tanah gambut di Kabupaten Kutai Kartanegara meliputi luas 110.094 ha yang tersebar di lima kecamatan, yaitu Kecamatan Kembang Janggut, Kenohan, Kotabangun, Muara Kaman, dan Muara Wis. Tanah gambut yang dijumpai tergolong gambut dangkal sampai sangat dalam (50-<500 cm). Lapisan substratum di bawah tanah gambut berupa tanah mineral bertekstur liat berdebu, lempung berdebu, lempung dan lempung berpasir. Gambut yang dijumpai mempunyai tingkat kematangan fibrik, hemik dan saprik, yang paling dominan tergolong hemik. Reaksi tanah sangat masam hingga masam (pH 4,0-5,5), KTK tinggi sampai sangat tinggi, dan kejenuhan basa sangat rendah. Berdasarkan hasil perhitungan, cadangan karbon di Kabupaten Kutai Kartanegara sebanyak 114,9 juta ton C dengan rata-rata per hektar mencapai 1.172 ton.Downloads
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