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All Journal Journal of Tropical Marine Science Jurnal Silva Tropika JURNAL HUTAN TROPIS
Irwan Sukri Banuwa
Jurusan Kehutanan, Fakultas Pertanian, Universitas Lampung
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

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Perubahan Luasan Lahan Mangrove Sebagai Ruang Terbuka Hijau Di Wilayah Pesisir Kota Bandar Lampung Maurent Kartika Maharani; Indra Gumay Febryano; Novita Tresiana; Irwan Sukri Banuwa
Journal of Tropical Marine Science Vol 4 No 1 (2021): Journal of Tropical Marine Science
Publisher : Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (351.79 KB) | DOI: 10.33019/jour.trop.mar.sci.v4i1.2038

Abstract

Coastal areas have many functions such as phisical, ecological, and economic with the existence of mangrove inside. The objective of the study is to find out the changes in mangrove area in Karang City. The method which is used in this study is the image interpretation tecnique with Geographic Information System (GIS) to the changes in area in 2012, 2015, 2017, and 2019. The data of mangrove’s extensive changes are analyzed by the result of direct interview on the changes in area that occur to find out the cause of the changes in mangrove area. The result shows that in 2015, there was a decrease in mangrove area of 0.4781 ha due to the development of coastal area to Pasaran Island. In 2017-2019, the increase occurred due to the ability of Mangroves to adapt with their habitat so that area increased towards the ocean of 1,193 ha. The increase of mangrove in the urban coastal areas can be considered to be designated as a green open space in addition to coastal conservation area and small islands.
Valuasi Ekonomi Air Terjun Sipiso-Piso Dengan Travel Cost Method Dan Willingness To Pay Lely Pratiwi Simanjorang; Irwan Sukri Banuwa; Rahmat Safe'i; Agus Setiawan
Jurnal Silva Tropika Vol. 2 No. 2 (2018): Jurnal Silva Tropika
Publisher : Fakultas Kehutanan Universitas Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22437/jsilvtrop.v2i3.5423

Abstract

Sipiso-Piso Waterfall is part of the Lake Toba area which is included in the Indonesian National Tourism Strategy Area. This study aims to determine the characteristics of visitors and the economic value of Sipiso-piso Waterfall. Economic assessments are carried out based on the travel costs incurred by visitors to the natural attractions they enjoy and willingness to pay. This research was conducted by distributing questionnaires to visitors then analyzed with descriptive. Visitors to Sipiso-piso Waterfall natural attractions are dominated by young people (18-30 years), with an education level equivalent to high school, working in the private sector, income levels of 1-4 million per month and are visitors who have no dependents or single . Some visitors come from Karo Regency, Medan City and Pematang Siantar City, come with groups or families. The total travel costs obtained amounted to Rp. 26.4 billion / year and total willingness to pay Rp. 1.2 billion / year. Economic value was obtained at 27.6 billion / year. This shows that the economic value obtained can be taken into consideration by the manager to increase the entrance ticket rate in line with the increase in facilities, facilities and infrastructure.
KOMUNITAS NEMATODA TANAH DI BLOK LINDUNG HUTAN PENDIDIKAN KONSERVASI TERPADU TAMAN HUTAN RAYA WAN ABDUL RACHMAN Yoshua Gdemakarti; Bainah Sari Dewi; I Gede Swibawa; Irwan Sukri Banuwa
Jurnal Hutan Tropis Vol 9, No 1 (2021): Jurnal Hutan Tropis Volume 9 No 1 Edisi Maret 2021
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v9i1.10464

Abstract

Hutan Pendidikan Konservasi Terpadu (HPKT) is part of Taman Hutan Raya Wan Abdul Rachman (Tahura WAR) enabled to support educational activities and research. The quality of the soil in this area is influenced by several factors, one of the factors i.e. nematodes. The aim of study to know the community of nematodes on the Protection Block, Hutan Pendidikan Konservasi Terpadu, Wan Abdul Rachman Forest Park. The research was conducted in April to May 2018. The soil samples were taken on arboretum seven, arboretum eight, arboretum nine and arboretum 10. Nematode observations were conducted in the laboratory of Plant Pests, Faculty of Agriculture, University of Lampung. Nematodes have been identified to genus level based on morphological traits. The result of study showed that there are 29 genus of nematode consists of 17 plant parasitic nematode genera, seven nematoda bacterial-feeding, three nematode fungal-feeding, one omnivore nematode and one predator nematode. The dominant nematode genera are Criconomella, Helycotylenchulus dan Rotylenchulus. The abundance of nematodes ranges from 251-613 individuals / 300cc soil. The diversity of soil nematodes based on the Shannon-Wienner index ranges from 2.33-2.62. The Shannon-Whienner Index criteria are classified as moderate. The Simpson Index ranges from 0.862-0.907. The highest similarity index genus in arboretum seven with arboretum nine and arboretum eight with arboretum nine with a value of 0.81. The lowest in arboretum seven and arboretum 10 that is 0.63.
Co-Authors Agus Setiawan Bainah Sari Dewi I Gede Swibawa Indra Gumay Febryano Lely Pratiwi Simanjorang Maurent Kartika Maharani Novita Tresiana Rahmat Safe’i Yoshua Gdemakarti