Article Per Year (5 Year)
p-Index From 2021 - 2026
0
P-Index
This Author published in this journals
All Journal Jurnal Ilmu Lingkungan Jurnal Penelitian Kehutanan FALOAK
Grace Serepina Saragih
Pusat Penelitian dan Pengembangan Kualitas dan Laboratorium Lingkungan
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Economics, Econometrics & Finance Environmental Science Immunology & microbiology

Published : 2 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 2 Documents
Search

 1 
PENENTUAN PRIORITAS PENANGANAN BANJIR GENANGAN BERDASARKAN TINGKAT KERAWANAN MENGGUNAKAN TOPOGRAPHIC WETNESS INDEX Studi Kasus di DAS Solo Arina Miardini; Grace Serepina Saragih
Jurnal Ilmu Lingkungan Vol 17, No 1 (2019): April 2019
Publisher : School of Postgraduate Studies, Diponegoro Univer

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1191.376 KB) | DOI: 10.14710/jil.17.1.113-119

Abstract

The increasing frequency of flood events is an indication of the failure of watershed management. Natural resource utilization activities in the Solo watershed tend to be intensive from upstream to downstream, cause a decrease in the carrying capacity of the watershed. To restore the carrying capacity of the watershed, efforts are needed to monitor and evaluate watersheds. The initial stage that needs to be done is to ensure the accuracy of the flood-prone areas by determining priority areas. The purpose of the study is to determine the flood-prone areas in the Solo watershed based on the level of flood vulnerability. Flood vulnerability is influenced by topographic conditions. The Topographic Wetness Index (TWI) method was used to determine the flood-prone areas. The high TWI value indicates that the area has high flood vulnerability and is associated with flat topography with high flow density. This method is based on raster data was derived from DEM 30 m data which is reduced to slope through spatial analysis tools and the accumulation flow is analyzed using Watershed Delineation Tools (WDT). Based on the results of the analysis, the priority of flood handling is determined in the criterion-very vulnerable area with TWI 11.65-38.30 identified as 387098.23 ha (39.68%). Flood handling in the Solo watershed is prioritized on 1) Bojonegoro Regency covering 105215.13 ha, 2) Ngawi (56810.68 ha), 3) Madiun (44102.06 ha), 4) Tuban covering an area of 43072.06 ha, and 5) Ponorogo (35853.62 ha).
Karakteristik Pertumbuhan Tanaman Faloak (Sterculia quadrifida R.Br.) Asal Populasi Pulau Rote Siswadi Siswadi; Heny Rianawati; Aziz Umroni; Muhammad Hidayatullah; Grace Serepina Saragih
Journal Penelitian Kehutanan FALOAK Vol 4, No 2 (2020): Jurnal Penelitian Kehutanan Faloak
Publisher : Balai Penelitian Dan Pengembangan Teknologi Hasil Hutan Bukan Kayu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpkf.2020.4.2.81-94

Abstract

Faloak (Sterculia quadrifida R.Br.) adalah tumbuhan obat yang digunakan oleh masyarakat di provinsi Nusa Tenggara Timur (NTT) untuk pengobatan hepatitis, maag, dan memulihkan stamina. Tumbuhan ini dapat dijumpai di beberapa pulau di NTT, salah satunya di Pulau Rote. Tujuan penelitian ini adalah untuk mengetahui pertumbuhan tanaman faloak dari pulau kecil P. Rote. Sumber materi genetik faloak berupa biji diambil dari tiga populasi asal P. Rote yakni Lobalain, Rote Barat, dan Pantai Baru. Biji dari ketiga populasi disemaikan lalu ditanam di Stasiun Penelitian Banamlaat, Kabupaten Timor Tengah Utara. Penanaman menggunakan rancangan Completely Randomized Design (CRD) dengan 3 populasi dan 62 famili, setiap famili ditanam sebanyak 8 anakan dengan jarak tanam 3 x 3 m. Karakter morfologis yang diamati adalah panjang, lebar, dan berat biji, ukuran daun, tinggi, dan diameter bibit. Parameter yang dianalisis adalah persen hidup, Indeks Mutu Bibit, Nisbah Pucuk Akar, dan Kekokohan Bibit. Analisis ANOVA digunakan untuk mengetahui perbedaan karakter morfologis dari ketiga populasi. Hasil penelitian menunjukkan bahwa pada umur enam tahun populasi asal Pantai Baru memiliki persen hidup tertinggi sebesar 73%, diikuti oleh populasi Rote Barat sebesar 71%. Populasi Lobalain memiliki persen hidup terendah yaitu 58%. Tanaman dari populasi Pantai Baru juga memiliki rerata tinggi dan diameter yang paling baik yaitu 74,26 cm dan 10,25 mm. Tanaman dari populasi Rote Barat dan Lobalain memiliki rerata tinggi dan diameter sebesar 57,19 cm dan 8,44 mm; 40,34 cm dan 5,94 mm. Tanaman faloak dari populasi Pantai Baru memiliki karakteristik pertumbuhan yang terbaik.
Co-Authors Arina Miardini Aziz Umroni Heny Rianawati Muhammad Hidayatullah Siswadi Siswadi