Estimasi Stok Karbon Hutan Mangrove di Kalimireng, Gresik, Jawa Timur, Berdasarkan Metode Klasifikasi NDVI Pada Citra Sentinel-2

Putri, Syafira Alifia Setia (2023) Estimasi Stok Karbon Hutan Mangrove di Kalimireng, Gresik, Jawa Timur, Berdasarkan Metode Klasifikasi NDVI Pada Citra Sentinel-2. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Pemanasan global merupakan peristiwa terjadinya peningkatan temperatur rata-rata atmosfer, laut, dan daratan bumi yang dipengaruhi oleh gas rumah kaca (GRK), utamanya karbon dioksida (CO2). Salah satu mitigasi terjadinya peningkatan GRK yaitu dengan menyediakan area bervegetasi, contohnya ekosistem hutan mangrove. Mangrove berpotensi besar sebagai hutan penyimpan karbon dan dapat dimanfaatkan sebagai upaya mitigasi dalam menghadapi climate change sebagai Blue Carbon. Kawasan hutan mangrove di Sungai Kalimireng, Gresik, memiliki banyak aktivitas industri. Hal tersebut menghasilkan limbah dan polusi yang dapat meningkatkan emisi karbon di sekitar Sungai Kalimireng. Estimasi stok karbon dapat dilakukan melalui pendekatan dengan teknologi penginderaan jauh, yaitu dengan memanfaatkan citra satelit Sentinel-2. Berdasarkan hasil penelitian, kerapatan jenis total stasiun 1 (2.383,33 tegakan/ha) dan kerapatan jenis total stasiun 2 (2.200 tegakan/ha) tergolong baik. Estimasi stok karbon berdasarkan pengukuran lapangan tertinggi berada pada KL 2.1.2 (148,56 ton/ha) dan terendahnya pada KL 2.2.2 (14,52 ton/ha). Sedangkan jumlah stok karbon secara keseluruhan yaitu sebesar 1.069,32 ton/ha. Stok karbon dari citra dianalisis menggunakan nilai NDVI. Estimasi stok karbon berdasarkan nilai NDVI tertinggi terdapat pada KL 2.1.3 (139,77 ton/ha) dan terendahnya pada KL 2.2.3 (58,51 ton/ha). Sedangkan jumlah stok karbon secara keseluruhan yaitu sebesar 1.069,33 ton/ha. Nilai koefisien korelasi antara stok karbon lapangan dengan NDVI citra Sentinel-2 sebesar 0,44 dengan tingkat korelasi yang cukup dan nilai validasi RMSE sebesar 41,11 ton/ha. Persebaran estimasi stok karbon ekosistem hutan mangrove di Sungai Kalimireng, Kecamatan Manyar, Kabupaten Gresik, terbagi menjadi terbagi menjadi 4 kelas, yaitu 7,92 - 53,91 ton/ha (nilai NDVI antara 0,4 - 0,49), 53,91 – 76,91 ton/ha (nilai NDVI antara 0,49 - 0,52), 76,91 – 107,57 ton/ha (nilai NDVI antara 0,52 - 0,56), dan 107,57 – 144,75 ton/ha (nilai NDVI antara 0,56 - 0,6085).
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Global warming is an event of an increase in the average temperature of the atmosphere, sea and land on earth which is affected by greenhouse gases (GHG), mainly carbon dioxide (CO2). One of the mitigations for an increase in GHG is by providing vegetated areas, for example mangrove forest ecosystems. Mangroves have great potential as carbon storage forests and can be used as a mitigation effort in dealing with climate change as Blue Carbon. The mangrove forest area on the Kalimireng River, Gresik, has many industrial activities. This produces waste and pollution which can increase carbon emissions around the Kalimireng River. Estimation of carbon stocks can be carried out through an approach with remote sensing technology, namely by utilizing Sentinel-2 satellite imagery. Based on the results of the study, the total species density of station 1 (2.383,33 ind/ha) and the total species density of station 2 (2.200 ind/ha) were classified as good. The highest estimated carbon stock based on field measurements was at KL 2.1.2 (148,56 tons/ha) and the lowest was at KL 2.2.2 (14,52 tons/ha). Meanwhile, the total carbon stock is 1.069,32 tons/ha. The carbon stock of the images is analyzed using the NDVI value. Estimation of carbon stocks based on the highest NDVI value is found in KL 2.1.3 (139,77 tons/ha) and the lowest is in KL 2.2.3 (58,51 tons/ha). Meanwhile, the total carbon stock is 1.069,33 tons/ha. The correlation coefficient between field carbon stocks and Sentinel-2 NDVI imagery is 0,44 with a sufficient level of correlation and an RMSE validation value of 41,11 tons/ha. The distribution of the estimated carbon stock of the mangrove forest ecosystem in the Kalimireng River, Manyar District, Gresik Regency, is divided into 4 classes, namely 7,92 - 53,91 tons/ha (NDVI value between 0,4 – 0,49), 53,91 – 76,91 tons/ha (NDVI value between 0,49 – 0,52), 76,91 – 107,57 tons/ha (NDVI value between 0,52 – 0,56), and 107,57 – 144,75 tons/ha (NDVI value between 0,56 – 0,6085).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Carbon Stocks, Mangroves, NDVI, Remote Sensing, Mangrove, Penginderaan Jauh, Sentinel-2, Stok Karbon.
Subjects:	G Geography. Anthropology. Recreation > G Geography (General) > G70.5.I4 Remote sensing H Social Sciences > HA Statistics > HA31.7 Estimation Q Science > QH Biology > QH301 Biology
Divisions:	Faculty of Science and Data Analytics (SCIENTICS) > Biology > 46201-(S1) Undergraduate Thesis
Depositing User:	Syafira Alifia Setia Putri
Date Deposited:	17 Oct 2023 07:23
Last Modified:	17 Oct 2023 07:32
URI:	http://repository.its.ac.id/id/eprint/103988

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