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All Journal JURNAL HUTAN TROPIS
Rudi Hilmanto
Jurusan Kehutanan Fakultas Pertanian Universitas Lampung

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KINERJA MODAL SOSIAL DALAM KAITANNYA DENGAN PENDAPATAN MASYARAKAT AGROFORESTRY: STUDI DI DESA KARANG REJO KECAMATAN JATI AGUNG LAMPUNG SELATAN Samsul Bakri; Rommy Qurniati; Rahmat Safe’i; Rudi Hilmanto
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 | Full PDF (796.451 KB) | DOI: 10.20527/jht.v9i1.10494

Abstract

Social capital of agroforestry’s community needs to be developed to enhance their productivity. It is because the physical capital has generally been very intensively utilized, as in Karang Rejo Village, Jati Agung Subdistrict, South Lampung Regency. This study aims to model [1] Total household income [Y-tot] as the function of 5 groups of variables (demographics, sources of income from other sectors, physical capital, social capital and access to information, and to model [2] the network as function of accessibility to information. A survey of 25 households was conducted in August 2019, to collect data of total income, demographics, physical capital (land tenure, ownership of motorbikes, cattle, goats, and chickens), accessibility (to cultivated land, to the village center, and to sub-districts), social capital performance (norm strength, trust, and network), access to information (participation in extension, watching TV habits, and cellphone signal strength). The ordinary least square was applied to build both for the Model [1] and Model [2]. The results showed that: [1] The total income [Y-Tot] can significantly be increased through the addition of physical capital as well as access to information (especially participation in extension), and [2] The elements of social network capital can be developed through the use of motorbikes, increasing community participation in extention, and reducing the frequency of watching TV.
PEMANFAATAN CITRA LANDSAT UNTUK VALUASI JASA LINGKUNGAN HUTAN NEGARA DALAM PENGENDALIAN PENYAKIT DEMAM BERDARAH DENGUE (DBD) : STUDI DI PROVINSI LAMPUNG Yustinus Seno; Samsul Bakri; Dyah W.S.R. Wardani; Rudi Hilmanto
Jurnal Hutan Tropis Vol 6, No 3 (2018): JURNAL HUTAN TROPIS VOLUME 6 NOMER 3 EDISI NOVEMBER 2018
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (3492.844 KB) | DOI: 10.20527/jht.v6i3.6004

Abstract

The current population has not been balanced by the fulfillment of minimum land needs for sustainable welfare improvement. This reality can be a trigger for communities to convert forest land. Changes in forest cover due to conversion will lead to microclimate change that may affect temperature rise and ecological changes. Temperature, moisture, and nutrient affect vector distribution, population dynamics, feeding activity, virus incubation period in mosquito body, adult mosquito life and the gonotrophic cycle of mosquitoes such as Aedes aegypti that causes Dengue Hemorrhagic Fever (DHF). Therefore, this study aims to determine the valuation of forests role in providing environmental services upon the control of dengue disease in Lampung Province. The data that collected were primary data of the land cover change in Lampung Province and secondary data such as rainfall data, population density and Incidence Rate of Dengue Hemorrhagic Fever. Afterwards, the dynamics of forest and land cover change at the district/city were identified through image Landsat of 5, 7 and 8 of 2001, 2006, 2009 and 2014, their contribution to DHF case was analyzed using multiple linear regression models while in determining the valuation of environmental services, a human capital approach was used . The results showed that there was a significant correlation between population density 0.020966 (p = 0,000), the change of community forest cover -7,875 (p = 0,070), protected forest -7,782 (p = 0,099) and land conversion -6,941 (p = 0,060) towards the rate of DHF case in Lampung Province in 2001, 2006, 2009 and 2014. The valuation of environmental services of protected forest in Lampung Province through human capital approach by DHF medical cost approach technique was Rp.3.033.561.760, - / year, while for the community forest was Rp. 3.070.307.460, - / year.Jumlah penduduk yang ada saat ini ternyata belum diimbangi dengan pemenuhan kebutuhan lahan minimal untuk peningkatan kesejahteraan secara berkesinambungan. Realitas ini dapat menjadi pemicu masyarakat untuk mengkonversi lahan hutan. Perubahan penutupan lahan hutan karena konversi akan mengakibatkan perubahan iklim mikro yang dapat berpengaruh terhadap peningkatan suhu dan perubahan ekologi. Suhu, kelembaban dan nutrisi mempengaruhi distribusi vektor, dinamika populasi, aktifitas makan, masa inkubasi virus dalam tubuh nyamuk, jangka hidup nyamuk dewasa dan siklus gonotrofik nyamuk seperti nyamuk Aedesaegypti yang menyebabkan Demam Berdarah Dengue (DBD). Penelitian ini bertujuan menentukan valuasi peranan hutan dalam penyediaan jasa lingkungan pada pengendalian penyakit DBD di Provinsi Lampung. Data yang dikumpulkan meliputi data primer perubahan tutupan lahan di Provinsi Lampung dan data sekunder berupa data curah hujan, kepadatan penduduk dan insiden rate (IR) DBD. Dinamika perubahan tutupan hutan dan lahan per kabupaten/kota diidentifikasi melalui interpretasi citra Landsat 5, 7, dan 8 tahun 2001, 2006, 2009 dan 2014, kontribusinya terhadap insiden DBD dianalisis menggunakan model regresi linier berganda dan untuk menentukan valuasi jasa lingkungan digunakan pendekatan human capital. Hasil penelitian menunjukkan bahwa ada hubungan yang nyata antara kepadatan penduduk 0,020966 (p=0,000), perubahan tutupan hutan rakyat -7,875 (p=0,070), hutan lindung -7,782 (p=0,099) dan perubahan lahan terbangun -6,941 (p=0,060) terhadap angka kejadian DBD di Provinsi Lampung dari tahun 2001, 2006, 2009 dan 2014. Valuasi jasa lingkungan hutan lindung di Provinsi Lampung dengan pendekatan human capital melalui teknik pendekatan medical cost DBD adalah Rp. 3.033.561.760,-/tahun, sedangkan untuk hutan rakyat sebesar Rp. 3.070.307.460,-/tahun.  
PERBANDINGAN METODE MAXIMUM LIKELIHOOD CLASIFICATION (MLC) DAN OBJECT ORIENTED CLASSIFICATION (OOC) DALAM PEMETAAN TUTUPAN MANGROVE DI KABUPATEN LAMPUNG SELATAN Emi Artika; Arief Darmawan; Rudi Hilmanto
Jurnal Hutan Tropis Vol 7, No 3 (2019): Jurnal Hutan Tropis Volume 7 No 3 Edisi November 2019
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v7i3.7513

Abstract

Hutan mangrove berperan penting dalam menjaga ekosistem daerah pesisir. Ekosistem ini telah banyak mengalami konversi dan alih fungsi lahan menjadi tambak, pemukiman, perkebunan, dan sawah. Informasi mengenai tutupan hutan mangrove secara periodik dan akurat sangat diperlukan untuk memastikan ekosistem ini terjaga dengan baik, akan tetapi saat ini informasi tersebut masih sangat terbatas ditinjau dari aspek kuatitas data maupun metodologi pemetaannya. Penelitian ini bertujuan untuk menganalisis teknik deteksi hutan mangrove yang paling tepat dengan menggunakan citra satelit penginderaan jauh secara digital. Lokasi penelitian adalah Kabupaten Lampung Selatan. Tutupan lahan mangrove dihasilkan dari proses klasifikasi citra satelit menggunakan algoritma maximum likelihood classification dan object oriented classification. Hasil penelitian menunjukkan  bahwa algoritma object oriented classification merupakan metode klasifikasi yang lebih baik dan akurat dalam memetakan hutan mangrove dengan nilai akurasi sebesar 95%. Total tutupan hutan mangrove di Kabupaten Lampung Selatan yang dihasilkan dari hasil klasifikasi ini pada tahun 2017 adalah seluas 458 ha.
TINGKAT KENYAMANAN RUANG TERBUKA HIJAU (RTH) PERUM BUMI WAY URANG KALIANDA Enda Susianti; Rudi Hilmanto; Rahmat Safe’i
Jurnal Hutan Tropis Vol 8, No 3 (2020): Jurnal Hutan Tropis Vol 8 No 3 edisi November 2020
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v8i3.9625

Abstract

Kalianda is the capital of South Lampung Regency which has 4 city parks. One of the city parks is an area of Green Open Space (RTH) known as RTH Perum Bumi Way Urang. RTH is located in a housing complex, so it becomes a place for social interaction of local people, as well as places for other creatures to live and develop sustainably. However, the assessment of the comfort of RTH is unknown. The convenience of green space is important in maintaining the balance of community activities. The purpose of this study was to determine the comfort level of open green perum Bumi Way Urang Kalianda. The importance of this research as a reference for the government in planning and to make the decision to develop Perum Bumi Way Urang open green space is ideal and comfortable. The method used to determine the comfort level of open green space is the Temperature Humidity Index (THI) method and the percentage of canopy density. The data measured is temperature and humidity using a thermohigrometer and canopy density using the Habitapp application. The results showed that the comfort level of RTH Perum Bumi Way Urang based on the temperature and humidity index in the morning and evening was moderate with a value (THI = 23-27), during the daytime it showed a value (THI => 27) that is uncomfortable. It is necessary to add tree species that have a tight canopy, so that these conditions can make the visiting community feel comfortable.
DETEKSI TUTUPAN REPONG DAMAR DI PESISIR BARAT LAMPUNG MENGGUNAKAN CITRA SATELIT PENGINDERAAN JAUH Cecilinia Tika Laura; Arief Darmawan; Rudi Hilmanto
Jurnal Hutan Tropis Vol 7, No 3 (2019): Jurnal Hutan Tropis Volume 7 No 3 Edisi November 2019
Publisher : Lambung Mangkurat University-Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jht.v7i3.7511

Abstract

Sistem agroforestri yang khas dari Pesisir Barat Lampung ialah Repong Damar yang telah memberikan hasil bernilai ekonomi,ù bagi masyarakat secara turun temurun. Secara ekologi, peranannya sebagai penyangga kehidupan masyarakat sangatlah penting karena secara fisik memiliki kemiripan dengan hutan alam.  Penelitian ini dilakukan untuk mencari metode deteksi tutupan repong damar yang tepat dan akurat menggunakan data penginderaan jauh, sehingga pemantauannya secara berkelanjutan dapat dilakukan. Tiga metode deteksi tutupan repong damar dari Citra Landsat 8 dievaluasi, yaitu Maximum Likelihood Classification (MLC), Object Oriented Classification (OOC) dan Indeks Vegetasi (Normalized Difference Vegetation Index/NDVI, Normalized Difference Water Index/NDWI dan Enhanced Vegetation Index/EVI) melalui perbandingan matriks kesalahan (error matrix) dari tabel kontingensi. Hasil menunjukkan bahwa nilai akurasi total (overall accuracy) metode MLC adalah 92,16%, metode OOC adalah 92,27% dan metode Indeks Vegetasi dengan algoritma EVIadalah 83,33%. Metode OOC dan MLC memiliki perbedaan nilai akurasi yang sangat kecil yaitu sebesar 0,11%. Dari ketiga metode tersebut, metode OOC memiliki tingkat akurasi paling tinggi dengan nilai sebesar 92,27%