REDUKSI ALIRAN CO2 DARI IMPLIKASI SEKAT KANAL BERBASIS KOMPOSIT KARET ALAM PADA LAHAN GAMBUT SUMATERA SELATAN
DOI:
https://doi.org/10.22302/ppk.wp.v1i1.621Keywords:
bloking kanal, karet, aliran CO2, gambut, subsiden, Licor LI-850Abstract
Pembasahan kembali merupakan suatu upaya dalam mengurangi emisi CO2 akibat drainase yang berlebihan di lahan gambut. Sekat kanal berbasis komposit karet alam adalah suatu teknologi yang dapat digunakan untuk pembasahan kembali lahan gambut. Pada penelitian ini, perhitungan aliran CO2 yang dilepaskan dari lahan gambut dari implikasi bloking kanal berbasis komposit karet alam menggunakan 3 metode, yaitu metode subsiden, empirik dan CO2/H2O gas analyzer (Licor LI-850). Hasil penelitian menunjukkan bahwa 7 bulan setelah pemasangan sekat kanal berbasis komposit karet alam, rata-rata penurunan gambut menurun sebesar 7 cm atau setara reduksi 638,29 ton CO2-eq/ha/tahun. Sementara itu, pengukuran dengan metode empirik menunjukkan perbedaan tinggi muka air tanah di saat musim kemarau di dalam dan luar sekat kanal sebesar 15 cm atau setara dengan 12.506 ton CO2-eq/ha/tahun. Namun hasil perhitungan dengan menggunakan metode subsiden dan empirik sangat besar jika dibandingkan dengan metode CO2/H2O gas analyzer yang hanya berkisar antara 2- 13 ton CO2-eq/ha/tahun pada kedalaman air 40-89 cm.
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