KEANEKARAGAMAN JENIS VEGETASI KAWASAN HUTAN MANGROVE DI DESA SUNGAI NILAM KECAMATAN JAWAI KABUPATEN SAMBAS
| Main Authors: | Diba, Farah, Herawatiningsih, Ratna, Ajib, Ajib |
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| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Universitas Tanjungpura
, 2022
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| Subjects: | |
| Online Access: |
http://jurnal.untan.ac.id/index.php/jmfkh/article/view/53847 http://jurnal.untan.ac.id/index.php/jmfkh/article/view/53847/75676593475 |
Daftar Isi:
- Mangrove species diversity is the vegetation types that represent characteristics based on three levels, namely genes, species, and ecosystems. The diversity of mangrove species and their uniqueness as a buffer to protect coastal and coastal areas from the threat of sedimentation, abrasion and prevention of water intrusion. The mangrove area of Sambas Regency is still not used properly by the community. This study aims to obtain data on the diversity of mangrove vegetation types in the existing zoning in the mangrove forest area of Sungai Nilam Village, Jawai District, Sambas Regency. The results of the study are expected to provide basic data for the management of mangrove areas in Sungai Nilam Village, Jawai District, Sambas Regency. The method used in this research is a survey method. Sampling at the research site used a combination of continuous line techniques and nested plotted line techniques. As a basis for considering species in each zoning, mangrove species can be represented. The observed vegetation data were adjusted to plant stratification, namely trees (diameter > 10 cm) on a plot measuring 10 x 10 m2; sapling (diameter < 10 cm) on a 5 x 5 m2 plot; and seedling level on plots measuring 2 x 2 m2. Result of the research found four species at mangrove forest in Sungai Nilam village, namely Avicennia marina, Avicennia lanata, Bruguiera cylindrical, and Rhizophora apiculata. The INP value of Avicennia marina is 144.98% Avicennia lanata is 57.607%, Bruguiera cylindrical is 61.94% and Rhizophora apiculata is 35.47%. Diversity Index on seedling is 0.99, sapling is 1.90 and trees is 0.52. Dominance Index on seedling is 0.42, sapling is 0.50 and trees is 0.73. The structure of mangrove vegetation was formed a J curve which means the regeneration of the vegetation in mangrove forest of Sungai Nilam village Jawai sub-district Sambas regency was normal and growth healthy.Keywords: Avicennia marina, Avicennia lanata, Desa Sungai Nilam, mangrove, Kabupaten SambasAbstrakKeanekaragaman jenis mangrove merupakan banyaknya suatu jenis vegetasi di suatu lokasi yang mewakili karakterisitik yang berdasarkan pada tiga tingkatan yaitu gen, spesies, dan ekosistem. Keanaekaragaman jenis mangrove dan keunikannya sebagai penyangga perlindungan wilayah pesisir dan pantai dari ancaman sedimentasi, abrasi dan pencegahan intruisi air. Kawasan hutan mangrove di Kabupaten Sambas belum dimanfaatkan oleh masyarakat. Penelitian bertujuan untuk mendapatkan data tentang keanekaragaman jenis vegetasi mangrove pada zonasi yang ada di kawasan hutan mangrove Desa Sungai Nilam Kecamatan Jawai Kabupaten Sambas. Hasil penelitian diharapkan dapat memberikan data dasar untuk pengelolaan kawasan mangrove di Desa Sungai Nilam Kecamatan Jawai Kabupaten Sambas. Metode yang digunakan dalam penelitian ini adalah metode survey. Pengambilan sampel di lokasi penelitian menggunakan teknik kombinasi jalur kontinu dan teknik garis berpetak tersarang, sebagai dasar pertimbangan jenis di setiap zonasi vegetasi jenis mangrove dapat terwakili. Data vegetasi jenis yang diamati disesuaikan dengan stratifikasi tumbuhan yaitu pohon (diameter > 10 cm) pada plot berukuran 10 x 10 m2 ; pancang (diameter < 10 cm) pada plot 5 x 5 m2 ; dan tingkat semai pada plot berukuran 2 x 2 m2. Hasil penelitian ditemukan empat jenis pohon penyusun vegetasi yaitu Avicennia marina, Avicennia lanata, Bruguiera cylindrical, Rhizophora apiculata. Nilai INP Avicennia marina adalah 144,98% Avicennia lanata 57,607%, Bruguiera cylindrical 61,94% dan Rhizophora apiculata 35,47%. Indeks keanekaragaman pada tingkat semai 0,99, pancang 1,90 dan pohon 0,52. Indeks dominansi pada tingkat semai 0,42, pancang 0,50 dan pohon 0,73.Struktur vegetasi hutan mangrove berdasarkan kerapatan tiap fase pertumbuhan membentuk kurva J terbalik yang berarti regenerasi hutan mangrove Desa Sungai Nilam kecamatan jawai Kabupaten Sambas dalam keadaan sehat dan normal.Kata kunci: Avicennia marina, Avicennia lanata, Desa Sungai Nilam, mangrove, Kabupaten Sambas