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Strategi Pengembangan Hutan Rakyat di Desa Bandar dalam Kecamatan Sidomulyo Kabupaten Lampung Selatan Butar, Victor Butar; Duryat, Duryat; Hilmanto, Rudi
Jurnal Sylva Lestari Vol 7, No 1 (2019): Januari
Publisher : Universitas Lampung

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Abstract

The community forest is an alternative solution to the problem of the pressure of forest resources. The benefits obtained by the community depend on the management carried out by community forest farmers. This study aims to see and analyse the strategy of developing community forests in Bandar Dalam Village. The study was conducted in May 2015. The data collected is the potential data of wood analysed quantitatively. Measurement of wood potential data was carried out using a 10m x 10m square measuring plot with a sampling intensity of 1.3%. Analysis of Strengths, Weaknesses, Opportunities, and Threats was carried out to determine the right development in the community forests of Bandar Dalam Village. The community forest development strategy that needs to be implemented is the maintenance of trees, reducing the weakness of knowledge about forests by increasing knowledge about the benefits of forests and reducing threats by using simple technologies such as the use of complete agricultural tools and fertilisation.Keywords: forest products, wood private forests, the development strategy
Skarifikasi dengan Perendaman Air Panas dan Air Kelapa Muda Terhadap Perkecambahan Benih Saga (Adenanthera pavonina L.) Romdyah, Neneng Laila; Indriyanto, Indriyanto; Duryat, Duryat
Jurnal Sylva Lestari Vol 5, No 3 (2017): September
Publisher : Universitas Lampung

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Abstract

Saga (Adenanthera pavonina) has an orthodox seeds, that could be stored up to 8 months.  The seeds have a hard structure, which was covered by wax on the seeds coat.  The research aims was to determine the effect of scarification by immersion the seed in to hot water, with  initial temperature of 100oC continued by immertion to young coconut water, that gives the best effect on germination, average days to germinate, and the germinating power of saga seeds.  This research was conducted at Greenhouse in Integrated Field Laboratory, Agriculture Faculty, University of Lampung, on May 2016.  Randomize complete design in 5 treat-ments was applied as research design. The treatments consisted of scarification by immersion to hot water temperature of 100° C, continued by immersion to fresh water temperatur (24oC) for 24 hours; immertion to hot water temperature of 100° C continued to young coconut water for 6 hours; 12 hours; 18 hour; 24 hours.  Bartlett examination was used to analyze data homogenity.  Analysis of variance was applied to figur out the effect of treatments given.  The results showed none of the treatments with young coconut water was increasing germination of saga seed.Keywords: hot water, saga seeds, scarification, young coconut water
Estimasi Karbon Tersimpan Pada Hutan Rakyat Di Pekon Kelungu Kabupaten Tanggamus Ristiara, Liana; Hilmanto, Rudi; Duryat, Duryat
Jurnal Sylva Lestari Vol 5, No 1 (2017): Januari
Publisher : Universitas Lampung

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Abstract

The increasing rates of forest degradation and deforestation has been decreasing carbonstocks of forest. Pekon kelungu is one of the village that developing the community forestusing agroforestry system that is also has a function as a carbon stock. The research wasconducted to determine the dominant vegetation and to predict the amount of above groundcarbon stock at the community forest in Pekon Kelungu. The Important Value Index (IVI) wascalculated to measure plants domination.  Allometric equation was used to measure carbonstored for living and dead tree, volume formulas for necromass and Biomass ExpansionFactor formula for litter and seedlings. Durian, cacao and campaca is the dominat tree poleand seedling, respectively. The total carbon of above ground biomass of community forest inPekon Kelungu is amounted to 101,61 ton/ha. Carbon stored on tree component is amountedto 99,92 ton/ha, necromass is amounted to 0,81 ton/ha, litter is amounted to 0,87 ton/ha andseedling is amounted to 0,02 ton/ha.Keyword : carbon stock,community forest, IVI,
Komposisi, Struktur, Dan Keanekaragaman Jenis Vegetasi Di Jalur Wisata Air Terjun Wiyono Atas Taman Hutan Raya Wan Abdul Rachman Provinsi Lampung Dwi Saputra, Ardiyansa; Indriyanto, Indriyanto; Duryat, Duryat
Jurnal Sylva Lestari Vol 4, No 3 (2016): September
Publisher : Universitas Lampung

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Abstract

Wan Abdul Rachman Grand Forest Park has a potential of natural resources that can be used as natural attractions. One of the tourism potential is The Waterfall of Wiyono Atas.  In addition, plant diversity found around the waterfall also has a potential to support the tourism.   The aims of the research was to figure out the composition of plant species, structure of vegetation based on the density of each growth phase, and diversity of plant along the tourism track. The research was conducted in May—June 2015. Vegetation analysis with aterraced plot was employed as sampling method, that was consisting 44 plots which were 22 plots for left track and 22 plots for right track, and the distance between plots was 80 m.  The analysis of density, frequency, dominance, important value  index, Shannon diversity index, and canopy stratification were used as data analysis. The results showed that the plant composition along the tourism track was made up of 28 species in the left track and 31 species in the right track.  The vegetation density of tourism track was classified as high on seedling phase for 11,600 individu/ha, sapling phase 1,880 individu/ha, and it was classified low density on pole phase for 350 individu/ha, and tree phase for 63.64 individu/ha on the left track, while on the right track, vegetatation density was classified as high on seedling phase for 10,900 individu/ha, sapling phase for 1,140 individu/ha, and classified low density on pole phase for 309.09 individu/ha, and tree phase for 86.36 individu/ha.  The vegetation former, consist of 5 stratum, ranging from stratum A, B, C, D, and E.  The diversity in the tourism track was classified as low, with the value of diversity in the left track of 1.197 and the right track of 1.189. Keywords: composition, diversity, Grand Forest Park, structures
Analisis Rendemen Atsiri Biji Pala (Myristica fragrans) pada Berbagai Kelas Iintensitas Cahaya Matahari di Desa Batu Keramat Kecamatan Kota Agung Kabupaten Tanggamus Ariandi, Erin Agesta; Duryat, Duryat; Santoso, Trio
Jurnal Sylva Lestari Vol 6, No 1 (2018): Januari
Publisher : Universitas Lampung

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Abstract

Nutmeg tree (Myristica fragrans) is a spice tree with high economic value. Nutmeg fruit was contains essential oil as the results of secondary metabolism process. Adequacy of sunlight, the average distance of intersect trees, the tree species and numbers of intersect trees on photosynthesis and the results of secondary metabolism. The aimed of the study was to analyze the rendemen yield obtained from the nutmeg fruit based on differences sunlight intensity with the differences stratum canopy and determine the factors that influence the yield of nutmeg essential oil. The differences of sunlight intensity was used as a treatment there were three classes of sunlight intensity which were low sunlight intensity (0-25%), the moderate sunlight intensity (25-75%) and the high sunlight intensity (75-100%). The multiple linier regression was employed as data analysis method. The result explained that the best sunlight intensity was the moderate (25-75%) with essensial oil rendemen as much 198,2 ml/kg. The result test F shown that in all variable (the sunlight intensity (X1), the average distance of intersect trees (X2), the tree species (X3) and numbers of intersect trees (X4)), significanly influened the production of essensial oil. The results of multiple linear regression analysis deliver the equation of Y = 2,133 + 0.037X1 + 0.275X2 - 0.226X3 - 0.049X4, the equation show a positive value means direcly proporsional to the result of yield by nutmeg essensial oil and a negative value means the opposite. 60,2% coeficient determination value, which means that the equation could explain 60,2% the variables influence to the nutmeg essensial oil rendemen.Keywords: essential oil, multiple linear regression, Myristica fragrans, sunlight intensity.
Jenis Tanaman, Kerapatan, Dan Stratifikasi Tajuk Pada Hutan Kemasyarakatan Kelompok Tani Rukun Makmur 1 Di Register 30 Gunung Tanggamus, Lampung Septiawan, Wawan; Indriyanto, Indriyanto; Duryat, Duryat
Jurnal Sylva Lestari Vol 5, No 2 (2017): Mei
Publisher : Universitas Lampung

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Abstract

Protection forests have a protective function as a basic life support system to regulate the water system, prevent floods, control erosion, prevent sea water intrusion and maintaining soil fertility. This research aims to; 1) determined the type of forest vegetation component plants based on groups of forestry and agricultural crops; 2) determined the density of each type of plant; and 3) knowing the stratification of the forest canopy. To determined the condition of the forest vegetation in the area of arable land of farmer groups Rukun Makmur 1, the researcher conducted a vegetation survey with terraced line method in order to obtain an overview of the forest vegetation is formed through the implementation of community forestry system. Observations were made with the creation of as many as 31 pieces of sample plots. This study found 36 species of plants consisting of jungle wood class 14 types, 10 types of jungle MPTS, MPTS agriculture 9 types, 3 types of annual agricultural crops, and there is no seasonal agricultural crops.  Plant density for each class of plants namely class jungle wood 412.44 individuals / ha, MPTS jungle 44.28 individuals / ha, agricultural MPTS 25.40 individuals / ha, and the annual agricultural 1729.03 individuals / ha. Stratification canopy is formed consisting of five strata are strata A, B, C, D, and E. Key word: community forest, plant destiny, stratification canopy, type of plant
Karbon Tersimpan pada Repong Damar Pekon Pahmungan, Kecamatan Pesisir Tengah, Kabupaten Pesisir Barat Bhaskara, Dendi Restu; Qurniati, Rommy; Duryat, Duryat; Banuwa, Irwan Sukri
Jurnal Sylva Lestari Vol 6, No 2 (2018): Mei
Publisher : Universitas Lampung

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Abstract

The area of Repong Damar in Pahmungan Village is a form of mixed forest ecosystem managed by local communities. The diversity of plant species in Repong Damar is expected to contribute on carbon sequestration at the atmosfer, therefore it was necessary to conduct research that aims to find out the structure and composition of vegetation as well as to determine the potential of carbon stock in Repong Damar. The research was used the Important Value Index method, allometric equations, and Completely Randomized Block Design. The result of this research showed that species of Damar Mata Kucing (Shorea javanica) has the highest dominancy in all of growing stage. This result was estimated because Damar Mata Kucing able to survive and develop them selves both on the environmental conditions. Repong Damar classified as forest which has high carbon stock that range between 174,22 up to 254,09 ton/ha so it can be categorized as forest with good condition. Potential of CO2 sequestrated that range between 639,37 up to 932,52 tons/ha. The results showed that none of the three classes of altitude had significant differences in carbon stocks because in all three classes of altitude still had the same environmental conditions.  Keywords: carbon reseve, Pesisir Barat, Repong Damar.
Tingkat Kenyamanan Di Hutan Kota Patriot Bina Bangsa Kota Bekasi Evert, Audy; Yuwono, Slamet Budi; Duryat, Duryat
Jurnal Sylva Lestari Vol 5, No 1 (2017): Januari
Publisher : Universitas Lampung

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Abstract

The development of urban area was accured quickly and lead to many environmentalproblems such as the rising of temperatures and decreasing of environmental quality. Greenopen space (RTH)was needed to overcome those problems.  The objectives of the researchwere to figure out the characteristics of vegetation in Patriot Bina Bangsa Urban Forest(including the species, density, broad canopy coverage), to figure out comfort index ofPatriot Bina Bangsa Urban Forest and to find out the visitor’s perception about comfortsvalue of facilities.  The analysis of vegetation was employed as the method of data collectionsensus method was used as the sampling method, and temperature humidity index (THI) wasused to determine the comfort level.  Interview techniques with random sampling method wasused to determine the visitors perception.  The result showed that the vegetationcharacteristics of Patriot Bina Bangsa Urban Forest took effects to temperature andhumidity. High density of tree could decrease the air temperature and increase the humidity, where dense canopy class had air temperature at 27.6 ºC and humidity at 80.1%; moderatecanopy class had air temperature at 29.1 ºC and humidity at 73.2%; sparse canopy class hadair temperature at 30.1 ºC and humidity at 70.5%.  Based on the temperature humidity index(THI), Patriot Bina Bangsa Urban Forest was categorized as uncomfortable, with THI values>26.  Most of visitors (77.72%) believed that the facilities wich exist in Patriot Bina BangsaUrban Forest ware categorized good.Key words :Patriot Bina Bangsa Urban Forest, urban forest comfort, city
KONTRIBUSI KOMPOSISI VEGETASI DALAM PENYIMPANAN DAN SERAPAN KARBON DI HUTAN RAKYAT DESA NEGARA RATU II KECAMATAN NATAR KABUPATEN LAMPUNG SELATAN Afriansyah, Dian; Duryat, Duryat; Kaskoyo, Hari
Jurnal Belantara Vol 2, No 2 (2019)
Publisher : Forestry Study Program Mataram University

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Abstract

Tree stands in community forest have potential to absorb carbon in the air by storing in the body parts of the tree.  This study aims to determine the effect of community forest’s stand types on the number of reserves and carbon uptake.  The sampling method used is the cluster sampling method to determine the sample.  Biomass data are collection destructive and non destructive methods.  Estimation of biomass is carried out using the allometric equations.  Measurement of carbon content using the formula from BSN (2011) x 0.47.  Comparative  analysis of carbon reserves and removals uptake using the variance test  and 5 % BNT test.  Public  forests in the Negara Ratu II village with gold teak stands have carbon reserves and removals (135.87 tons/ha and 499,00 ton/ha). the most significant compared to community forests with other types of stands. While the reserve value and carbon uptake between white teak (44.86 tons/ha and 164.63 tons/ha), acacia (54.13 tons/ha and 191.20 tons/ ha), red jabon (51.20ton/ha and 187.90 tons/ha), white jabon (59.51 tons/ha and 218.40 tons/ha), is no different.  
Biophysical Studies In Khilau Watershed Taufiq, Azhary; Riniarti, Melya; Duryat, Duryat; Yuwono, Slamet Budi
EnviroScienteae Vol 15, No 1 (2019): EnviroScienteae Volume 15 Nomor 1, April 2019
Publisher : PS S2 PSDAL PPS ULM

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Abstract

Khilau Watershed (DAS) is one of the sub-watersheds with the status of should be restored. The biophysical conditions of the watershed must be assessed, to determine the suitable actions for land rehabilitation. The purpose of this study was to provide a comparative analysis of baseline data on the biophysical conditions of the Khilau Sub-watershed area based on edaphic and climatic parameters. Data collection method was using cluster sampling in five types of land cover. The data analysis used spatial and laboratory analysis. The results showed that agroforests and annual crops mostly were on moderately steep to steep slopes (15-45%) and all primary forests were in steep slopes (>45%).  All the land covers were ultisol.  The primary forest has the highest CEC, N-total, P-availability, and C-organic among other land covers.  The agroforest has the most acid pH soil among other land covers.  The primary forest has the most rapid soil permeability compared to other land covers.  The  primary forest has the lowest temperature and the highest humidity compared to other land covers