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https://repositori.uma.ac.id/handle/123456789/29359| Title: | Model Pengelolaan Agromarinepolitan Berkelanjutan Berbasis Silvofishery (Wanamina) Di Pantai Timur Sumatera Utara |
| Other Titles: | Sustainable Agromarinepolitan Management Model Based on Silvofishery (Wanamina) on the East Coast of North Sumatra |
| Authors: | Siswoyo, Bambang Hendra |
| metadata.dc.contributor.advisor: | Mardiana, Siti Sabrina |
| Keywords: | agromarinepolitan;economy;ecosystem;mangrove;fisheries;ekonomi;ekosistem;perikanan |
| Issue Date: | 11-Aug-2025 |
| Publisher: | Universitas Medan Area |
| Series/Report no.: | NPM;211901002 |
| Abstract: | Tujuan penelitian ini adalah: 1. Mengidentifikasi kondisi dan potensi mangrove serta status pemanfaatan sumberdaya ikan sekitar pantai, 2. Menganalisis produksi perikanan tangkap, budidaya tambak silvofishery dan non silvofishery dalam pemanfaatan ekosistem mangrove, 3. Menganalisis nilai estimasi biomassa dan stok karbon pada Kawasan mangrove pantai timur Sumatera Utara, 4. Membuat model Dinamik pengelolaan Agromarinepolitan berkelanjutan betrbasis silvofishery. Penelitian dilakukan pada bulan Agustus 2022-Desember 2023, dengan lokasi pengambilan sampel di Kabupaten Langkat, Deli Serdang dan Serdang Bedagai. Data yang diperlukan meliputi karakteristik vegetasi mangrove, parameter fisika dan kimia lingkungan perairan, produksi serasah mangrove, dan data sekunder. Hasil perhitungan menunjukkan bahwa Rhizopohora apiculata memiliki kepadatan 2359-4208 ind/ha dengan kepadatan relatif antara 43,7-48,8 %. Nilai frekuensi dan frekuensi relatif tertinggi juga terdapat pada spesies Rhizophora apiculata, dan Rhizophora mucronata antara 0,67 – 1 dengan frekuensi relatif antara 25 – 44,4 %. Dominasi jenis dan dominasi relatif tertinggi Rhizophora apiculata sebesar 0,000010272 – 0,00001105 dengan dominasi relatif sebesar 23,07 – 40,25 %. Dengan demikian, kedua spesies ini merupakan spesies dengan indeks kepentingan tertinggi > 65 %. Analisis statistik dilakukan menggunakan koefisien korelasi Pearson untuk kepadatan mangrove dan produksi komoditas perikanan. Rata-rata kepadatan mangrove tertinggi terdapat di Kabupaten Langkat (3208,33 ind ha-1), dan yang terendah ada di Deli Serdang (1761,11 ind ha-1rata-rata produksi komoditas perikanan tertinggi Kabupaten Langkat dengan udang 18500 ton dan ikan 10529 ton. Hasil korelasinya Analisis menunjukkan bahwa kepadatan mangrove berkorelasi kuat dengan produksi udang (0,996) dan ikan (0,997). Produksi serasah mangrove yang terdiri dari Avicennia marina, Avicennia alba, Rhizophora mucronata dan Sonneratia alba mencapai 3,56 g/m2/hari atau 12.492 kg/ha/thn. Potensi perikanan pesisir ekosistem tersebut mampu mendukung 1.134,01 kg/ha/thn dengan nilai mencapai Rp 27.016.978,57/ha/thn. Nilai aktual perikanan tangkap mencapai Rp 5.442.896.260/ha/thn dan budidaya Rp 8.012.608/ha/thn. Nilai estimasi total biomassa dan stok karbon pada kawasan mangrove pantai timur Sumatera Utara yaitu 17545,757 kg/m2 atau setara dengan jumlah karbon tersimpan sebanyak 8452,51kg/m2. Biomassa tertinggi terdapat pada daerah Serdang bedagai (7512,92 kg/m2 ) atau setara dengan jumlah karbon tersimpan sebanyak 3531,06 kg/m2 . Nilai biomassa dan simpanan karbon tidak berbanding lurus dengan nilai kerapatannya, dikarenakan nilai biomassa dan simpanan karbon dipengaruhi oleh diameter pohon dan kondisi tegakan pohon mangrove yang dominan. Pengukuran simpanan karbon pada penelitian ini hanya berdasarkan biomassa pohon bagian atas saja, Hasil simulasi model dinamik menunjukkan bahwa pada kondisi eksisting, total nilai mangrove yang dimanfaatkan tidak lestari dan terus menurun. Sementara itu, rehabilitasi mangrove minimal 2,27 ha/tahun dapat mempertahankan nilai keberlanjutan mangrove yang dimanfaatkan. Produksi serasah mangrove yang terdiri dari Avicennia marina, Avicennia alba, Rhizophora mucronata dan Sonneratia alba mencapai 3,47 g/m2/hari atau 12.492 kg/ha/thn. The objectives of this study are: 1. To identify the condition and potential of mangroves and the status of utilization of fish resources around the coast, 2. To analyze the production of capture fisheries, silvofishery and non-silvofishery pond cultivation in the utilization of mangrove ecosystems, 3. To analyze the estimated value of biomass and carbon stocks in the mangrove area of the east coast of North Sumatra, 4. To create a dynamic model of sustainable Agromarinepolitan management based on silvofishery. The study was conducted in August 2022-December 2023, with sampling locations in Langkat, Deli Serdang and Serdang Bedagai Regencies. The data required include the characteristics of mangrove vegetation, physical and chemical parameters of the aquatic environment, mangrove litter production, and secondary data. The calculation results show that Rhizopohora apiculata has a density of 2359-4208 ind/ha with a relative density of between 43.7-48.8%. The highest frequency and relative frequency values are also found in the species Rhizophora apiculata, and Rhizophora mucronata between 0.67 - 1 with a relative frequency between 25 - 44.4%. The highest species dominance and relative dominance of Rhizophora apiculata are 0.000010272 - 0.00001105 with a relative dominance of 23.07 - 40.25%. Thus, these two species are species with the highest importance index > 65%. Statistical analysis was carried out using the Pearson correlation coefficient for mangrove density and fishery commodity production. The highest average mangrove density is found in Langkat Regency (3208.33 ind ha-1), and the lowest is in Deli Serdang (1761.11 ind ha-1). The highest average fishery commodity production in Langkat Regency is 18,500 tons of shrimp and 10,529 tons of fish. The results of the correlation analysis show that mangrove density is strongly correlated with shrimp production (0.996) and fish (0.997). Mangrove litter production consisting of Avicennia marina, Avicennia alba, Rhizophora mucronata and Sonneratia alba reaches 3.56 g/m2/day or 12,492 kg/ha/year. The coastal fisheries potential of this ecosystem is able to support 1,134.01 kg/ha/year with a value reaching IDR 27,016,978.57/ha/year. The actual value of capture fisheries reaches IDR 5,442,896,260/ha/year and aquaculture Rp 8,012,608/ha/year. The estimated total biomass and carbon stock value in the mangrove area of the east coast of North Sumatra is 17,545.757 kg/m2 or equivalent to the amount of carbon stored as much as 8,452.51 kg/m2. The highest biomass is found in the Serdang Bedagai area (7,512.92 kg/m2) or equivalent to the amount of carbon stored as much as 3,531.06 kg/m2. The biomass and carbon storage values are not directly proportional to the density values, because the biomass and carbon storage values are influenced by the diameter of the tree and the condition of the dominant mangrove tree stands. The measurement of carbon storage in this study was only based on the upper tree biomass. The results of the dynamic model simulation show that in existing conditions, the total value of the mangroves utilized is not sustainable and continues to decline. Meanwhile, mangrove rehabilitation of at least 2.27 ha/year can maintain the sustainability value of the utilized mangroves. Mangrove litter production consisting of Avicennia marina, Avicennia alba, Rhizophora mucronata and Sonneratia alba reached 3.47 g/m2/day or 12,492 kg/ha/year. |
| Description: | 220 Halaman |
| URI: | https://repositori.uma.ac.id/handle/123456789/29359 |
| Appears in Collections: | DD - Doctor of Agricultural Sciences |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| 211901002 - Bambang Hendra Siswoyo - Chapter IV.pdf Restricted Access | Chapter IV | 2.94 MB | Adobe PDF | View/Open Request a copy |
| 211901002 - Bambang Hendra Siswoyo - Fulltext.pdf | Cover, Abstract, Chapter I, II, III, V, Bibliography | 3.25 MB | Adobe PDF | View/Open |
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