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Analisis Struktur dan Vegetasi di Sempadan Sungai Ira (Wae Ira) Negeri Kamarian, Kecamatan Kairatu, Kabupaten Seram Bagian Barat Labetubun, Agung Herat; Irwanto, Irwanto; Tetelay, Febian Filiph
Jurnal Riset Rumpun Ilmu Tanaman Vol. 4 No. 2 (2025): Oktober : JURRIT: Jurnal Riset Rumpun Ilmu Tanaman
Publisher : Pusat riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jurrit.v4i2.6658

Abstract

This study aims to analyze the structure and composition of vegetation on the banks of the Ira River (Wae Ira), Negeri Kamarian, Kairatu District, West Seram Regency. Riparian vegetation plays an important role in maintaining the stability of river ecosystems, both in terms of ecological, hydrological, and biodiversity aspects. The method used in this study is a combination of the continuous strip sampling method and the line plot sampling method, which are applied to four levels of vegetation growth, namely seedlings, saplings, poles, and trees. The results of the analysis show that the vegetation structure in the study area is divided into four strata, with varying species compositions in each stratum. The dominant species found include Pulai (Alstonia scholaris), Pulaka (Cyrtosperma merkusii), Buah rao (Dracontomelon mangiferum), and Salam (Syzygium polyanthum). The highest Importance Value Index (INP) at the tree level is owned by Pulai (Alstonia scholaris) at 54,2. The highest vegetation density is at the seedling level with 52000 individuals/ha and the lowest at the tree level with 341 individuals/ha. The Shannon-Wiener diversity index (H') ranges from 1.87–2.65, indicating a moderate level of diversity. The results of this study indicate that the Ira River border area still has a relatively good vegetation structure and composition, although there are ecological pressures that cause dominance by certain species
STRUKTUR DAN KOMPOSISI VEGETASI DAERAH PASCA BANJIR DI NEGERI KAMARIAN KECAMATAN KAIRATU KABUPATEN SERAM BAGIAN BARAT Sapiya, Danielle Allesandro; Sahupala, Andjela; Tetelay, Febian
MARSEGU : Jurnal Sains dan Teknologi Vol. 2 No. 8 (2025): MARSEGU : Jurnal Sains dan Teknologi
Publisher : PT. BARRINGTONIA ASIATICA LESTARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.69840/marsegu/2.8.2025.518-536

Abstract

The objective of this study was to determine the structure and composition of natural forest vegetation following post-flood conditions in Kamarian Village, Kairatu District, West Seram Regency. Vegetation analysis was employed by collecting data on species types, number, diameter, and tree height. The data collection method in this study utilized the continuous strip sampling method and line plot sampling method with 100% intensity. The research area covered 3 hectares (30,000 m²) consisting of a transect length of 500 meters and an observation strip width of 20 meters. The results showed that the vegetation structure in the post-flood area consisted of four strata: Stratum A (tall trees), Stratum B (medium trees), Stratum C (lower trees), Stratum D (shrubs and ferns), and Stratum E (ground cover layer). The dominant species in each stratum varied; however, they were generally dominated by Pulai (Alstonia scholaris), Pulaka (Octomeles sumatrana), and Salam (Syzygium polyanthum). The vegetation composition in the post-flood area indicated moderate species diversity, with the dominance of several species showing adaptive value. The Importance Value Index (IVI) at each growth stage (trees, poles, saplings, and seedlings) demonstrated that Pulai, Pulaka, and Salam play a very important role in the plant community at the research location.