Preservation of Vegetation Diversity to Maintain the Riparian Ecosystem of the Sampean Watershed
Abstract
Riparian vegetation on river borders can affect the riparian ecosystem of the watershed related to its function as a buffer zone and ecotone between water and land. A high diversity of riparian vegetation can indicate that the ecosystem of a river border is in good condition. Therefore, it is helpful to inventory the diversity of vegetation in the riparian zone, which was done in this study using the Shannon-Wiener diversity index. In this research, four plots measuring 5m x 5m, spread across upstream, middle, and downstream areas were used to analyze the types of vegetation, including trees, shrubs, and herbs. The diversity index (H’) results revealed four vegetation species at the tree level, twelve species at the shrub level, and six species at the herb level. The range of H’ values in all sample plots was 1< H’ <3, so the river border was shown to have moderate diversity, which indicated that the ecosystem in the Sampean watershed is relatively balanced. It is necessary to preserve the riparian buffer zone through riparian vegetation restoration management to improve the ecosystem balance of the Sampean watershed.
Keywords: riparian vegetation, watershed, Shannon-Wiener diversity index
References
[1] Siahaan R, Ai NS. Jenis-jenis vegetasi riparian sungai ranoyapo, minahasa selatan. Jurnal LPPM Bidang Sains dan Teknologi. 2014;1(1):7-12.
[2] Nurika FBP, Wiryani E, Jumari J. Keanekaragaman vegetasi riparian sungai panjang bagian hilir di kecamatan. Jurnal Akademika Biologi. 2019;8(1):30-53.
[3] Wuryanta A. Banjir situbobdo akibat kerusakan kawasan hutan DAS sampean provinsi Jawa Timur. Seminar Nasional Geografi UMS; Surakarta, Indonesia; Publikasi Ilmiah; 2013[cited 2021 Jan 4]. Avaliable from: http://hdl.handle.net/11617/4222
[4] Rujakat A. Pendekatan penelitian kuantitatif. Yogyakarta: Deepublish; 2018.
[5] Siyoto S, Sodik A. Dasar metodologi penelitian. Yogyakarta: Literasi Media Publishing; 2015.
[6] Suprapto S. Indeks keanekaragaman jenis ikan demersal di perairan tarakan. Jurnal Bawal. 2014;6(1):47-53.
[7] Arifianto A, Darmawan Y. Studi alternatif pengelolaan banjir daerah aliran sungai (DAS) sampean hilir, provinsi Jawa Timur. Jurnal Infrastruktur. 2017;3(2):73-80.
[8] Ulfa F, Sarong MA, Abdullah A. Dampak pengalihan lahan mangrove terhadap keanekaragaman benthos di kecamatan jaya baru kota Banda Aceh. BIOTIK: Jurnal Ilmiah Biologi Teknologi dan Kependidikan. 2017;4(1):57-64 https://doi.org/10.22373/biotik.v4i1.1069
[9] Sodiq M. Ilmu kealaman dasar. Jakarta: Kencana Prenadamedia Grup; 2014.
[10] Yudianingrum D. Evaluasi dan perencanaan ruang terbuka hijau zona riparian sungai surabaya. Tugas akhir. Surabaya: Institut Teknologi Sepuluh Nopember (ITS); 2016.
[11] Peraturan Menteri Pekerjaan Umum 05/PRT/M/2008 tentang pedoman penyediaan dan pemanfaatan ruang terbuka hijau di kawasan perkotaan. Direktorat Jenderal Penataan Ruang, Departemen Pekerjaan umum; 2008.
[12] Peraturan no. 28/PRT/M/2015 tentang penetapan garis sempadan sungai dan garis sempadan danau. Menteri Pekerjaan Umum dan Perumahan Rakyat RI; 2015.