scholarly journals Kajian Tumbuhan Obat Akar Kuning (Arcangelisia flava Merr.) di Kelompok Hutan Gelawan, Kabupaten Kampar, Riau

2016 ◽  
Vol 15 (1) ◽  
pp. 43 ◽  
Author(s):  
Endro Subiandono ◽  
N. M. Heriyanto
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Average Diameter ◽  
Tree Density ◽  
Line Transect ◽  
Vegetation Analysis ◽  
Association Index ◽  
Important Value Index

<p>The study of akar kuning species (Arcangelisia flava Merr.) in Gelawan Forest Complex, Kampar District, Riau, was conducted in April 2005. This research used square plot measuring 1 km x 1 km (100 ha), in square plot made 5 systematicly line transect covering an area 1,000 m length and 20 m width distance between line transect 200 m. Each square plot was divided into sub plot to measure seedling, sampling, pole, and tree. Replications used two sample plots. The result of vegetation analysis, wide plot of 20 ha, with diversity index of tree, pole, sampling and seedling in habitat A. flava is 2.98, 3.57, 2.86, and 3.10. Each nineteen species included 28 individual crept by 33 individu of A. flava or density 1.65 individu/ha. Moreover, the density of A. flava with the average diameter and length was 4.84 cm and 17.18 m. Tree density that have diameter bigger than 20 was 98.65 individual per hectare. The species that closely associated with A. flava was Palaquium hexandrum Engl., Dyera costulata Hook.f., Dipterocarpus costulasus V.Sl. and Campnosperma auriculata Hook.f., in which association index was about 0.43, 0.31, 0.21, and 0.21. Domination of tree species with important value index/IVI above 15% at this habitat was: D. costulasus, Shorea parvifolia Dyer, P. hexandrum, C. auriculata and D. costulata.</p><p> </p><p><strong>Abstrak</strong></p><p>Kajian tumbuhan obat akar kuning (Arcangelisia flava Merr.) di kelompok hutan Gelawan, Kabupaten Kampar, Riau, dilakukan pada bulan April 2005. Penelitian ini menggunakan satuan contoh berbentuk bujur sangkar dengan ukuran 1 km x 1 km (100 ha). Di dalam plot bujur sangkar dibuat 5 jalur ukur yang diletakkan secara sistematik dengan jarak antarjalur 200 m, lebar jalur 20 m panjang 1.000 m dan pada jalur ini dilakukan pengukuran semai, pancang, tiang, dan pohon. Jumlah satuan contoh dua buah plot. Hasil analisis vegetasi pada luas plot 20 ha, nilai indeks keanekaragaman jenis tingkat pohon, tiang, pancang, dan semai di habitat akar kuning masing-masing adalah 2,98; 3,57; 2,86; dan 3,10. Ditemukan 19 jenis pohon berjumlah 28 individu yang dirambati oleh 33 batang akar kuning atau kepadatan 1,65 individu/ha berdiameter dan panjang rata-rata, yaitu sebesar 4,84 cm dan 17,18 m. Kerapatan pohon berdiameter lebih besar dari 20 cm di lokasi penelitian, yaitu sebesar 98,65 individu per hektar. Jenis balam berasosiasi dengan akar kuning paling erat (indeks asosiasi 0,43), kemudian diikuti oleh jelutung (0,31), keruing, dan terentang masing-masing sebesar 0,21. Tegakan yang mendominasi pada lokasi penelitian dengan INP di atas 15% dalam habitat akar kuning untuk tingkat pohon, yaitu keruing (Dipterocarpus costulasus V.sl.), meranti (Shorea parvifolia Dyer), balam (Palaquium hexandrum Engl.), terentang (Campnosperma auriculata Hook.f.), dan jelutung (Dyera costulata Hook.f.).</p>

scholarly journals Vegetation analysis and plant diversity in Pinus Jantho Forest (PJF) nature reserve, Aceh Besar

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
HILMINA ITAWAMERNI ◽  
SAIDA RASNOVI ◽  
ZUMAIDAR ZUMAIDAR
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Nature Reserve ◽  
Diversity Index ◽  
Systematic Sampling ◽  
Vegetation Analysis ◽  
High Level ◽  
Piper Aduncum ◽  
Important Value Index ◽  
Pinus Merkusii

Pinus Jantho Forest (PJF) Nature Reserve has unique characteristics and distinctive ecosystem that plays an important role in the preservation of germplasm and the protection of natural resources. The sustainability of the PJF Nature Reserve is strongly determined by vegetation of its constituents. Therefore, an effort is needed to help its management properly, one of which is by knowing the diversity of plants that make up the community in PJF Nature Reserve. The purpose of this research is to analyze the composition and diversity of plant species in PJF Nature Reserve. Data collection and sampling were done using multiple square method. The plots were laid out by systematic sampling. PJF Nature Reserve composed of 111 species from 46 family. The seedling and understorey have the highest number individuals (1028 in total). Then there are 240 individuals at sapling level, 108 individuals at pole, and 72 individuals for tree.  The Euphorbiaceae family has the largest number of species (11 species). The highest Important Value Index (IVI) for seedlings and understorey, sapling and pole, and tree respectively were Chloranthus elatior (11.09%), Piper aduncum (21.90% and 19.32%), and Pinus merkusii (25.52%). The Diversity Index indicates a high level of plant species diversity (3.25-3.63).

scholarly journals Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia

2020 ◽  
Vol 21 (7) ◽  
Author(s):  
ARIDA SUSILOWATI ◽  
DENI ELFIATI ◽  
HENTI HENDALSTUTI RACHMAT ◽  
KUSUMADEWI SRI YULITA ◽  
ADI NURUL HADI ◽  
...  
Keyword(s):  
Tree Species ◽  
Vegetation Structure ◽  
National Park ◽  
Diversity Index ◽  
Good Condition ◽  
Floristic Composition ◽  
Line Transect ◽  
Growth Stages ◽  
Limited Information ◽  
Wiener Diversity Index

Abstract. Susilowati A, Elfiati D, Rachmat HH, Yulita KS, Hadi AN, Kusuma YS, Batu SAL. 2020. Vegetation structure and floristic composition of tree species in the habitat of Scaphium macropodum in Gunung Leuser National Park, Sumatra, Indonesia. Biodiversitas 21: 3025-3033. Scaphium macropodum (Miq.) Beumee Ex K Heyne is a member of Malvaceae tree species and globally recognized as malva nut and locally known as ‘kembang semangkok’, ‘tempayang’, ‘merpayang’ or ‘kepayang’. The nut of S. macropodum has many benefits for medicinal purposes, yet destructive extraction of this tree species has led them to extinction. Among its natural distribution in Indonesia, North Sumatra Province, Indonesia is known as its original range, but there is limited information about the existence of this species. This study aimed to determine the vegetation structure of some tree species in the habitat of S. macropodum in Sikundur, Gunung Leuser National Park, Sumatra, Indonesia. Purposive sampling technique was employed by creating line transect at some forest areas where the population of S. macropodum is known to grow naturally. Four line transects with each transect consisting of five plots with nested plots within were established to record data at four growth stages, resulting in 80 plots in total. The results showed that the Important Value Index (IVI) of S. macropodum within the floristic community at the studied area was 21.98, 13.85, 27.30, and 39.60 for tree, pole, sapling, and seedlings stages, respectively. The Shannon-Wiener Diversity Index (H) were 3.80, 3.70, 3.06 and 2.45, Index of evenness (E) are 0.94, 0.92, 0.86, 0.77 and the Index of Richness (R) are 11.76, 10.73, 6.59, 4.10 for tree, pole, sapling, and seedlings stages. This result suggests that the natural population of S. macropodum in Sikundur forest was still in good condition at all stages from tree to seedling.

scholarly journals Spatial distribution, association patterns and richness of tree species in a seasonal forest from the Serra Geral formation, southern Brazil

2011 ◽  
Vol 25 (3) ◽  
pp. 605-617 ◽  
Author(s):  
Rafael Barbizan Sühs ◽  
Jean Carlos Budke
Keyword(s):  
Spatial Distribution ◽  
Tree Species ◽  
Diversity Index ◽  
Rio Grande ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Forest Species ◽  
Forest Patches ◽  
Association Index ◽  
Shannon’S Diversity Index

This study aimed to determine the spatial distribution of the most abundant tree species, to look for relationships that may be responsible for their distribution and to compare the expected richness along the Serra Geral formation in the state of Rio Grande do Sul , Brazil. An one-hectare plot was divided in 100 contiguous 10 x 10 m sampling units and all individuals with at least 4.8 cm diameter at breast high were measured and identified. Each sampling unit received a description of the spatial position through metric coordinates (x,y) in order to quantify the spatial pattern. Later, an association index among species was applied. The observed richness was rarefied and compared to other surveys located on the slopes of Serra Geral in Rio Grande do Sul. We surveyed 1,063 individuals belonging to 69 species and 33 families, and the Shannon's diversity index showed a diversity of 3.35 nats (Pielou's species evenness - J' = 0.79). Most species showed an aggregated distribution. Both association and dissociation patterns occurred among species leading to distinct forest patches. The rarefaction results showed a decrease of Atlantic species, which were replaced by typical seasonal forest species, when analyzing floristic contingents towards the west.

scholarly journals VEGETATION ANALYSIS AND POPULATION STRUCTURE OF PLANTS AT MOUNT ENDUT FORESTED AREA, GUNUNG HALIMUN SALAK NATIONAL PARK, BANTEN, JAVA, INDONESIA

REINWARDTIA ◽  
2018 ◽  
Vol 17 (1) ◽  
pp. 39
Author(s):  
Edy Sambas ◽  
Cecep Kusmana ◽  
Lilik Budi Prasetyo ◽  
Tukirin Partomihardjo
Keyword(s):  
Population Structure ◽  
Tree Species ◽  
National Park ◽  
Basal Area ◽  
Tree Density ◽  
Tree Level ◽  
Vegetation Analysis ◽  
Importance Value ◽  
Forested Area ◽  
Sampling Locations

SAMBAS, E. N., KUSMANA, C., PRASETYO, L. B. & PARTOMIHARDJO, T. 2018. Vegetation analysis and population structure of plants at Mount Endut forested area, Gunung Halimun Salak National Park, Banten, Java,Indonesia. Reinwardtia 17 (1): 39–53. — Study of vegetation structure and species composition at Mount Endut was carried out by using transect and plot methods. Data of trees, saplings and seedlings were enumerated from four transects measuring 10 m × 2,000 m in four directions of slopes i.e. North, South, East and West. In total there were 180 species of trees and saplings belonging to 105 genera and 51 families. Tree density and basal area indicate the variation and the differences in each of the sampling locations. Density of saplings and abundance of seedlings tend to be low in locations with high density and basal areas at tree level. Tree species having higher Importance Value were Castanopsis acuminatissima, Schima wallichii, C. argentea, Quercus gemelliflora, and Altingia excelsa. Castanopsis acuminatissima, Garcinia rostrata, S. wallichii, Symplocos cochinchinensis, and Prunus arborea were saplings which had highest density, while Ophiorrhiza marginata, Cyathea contaminans, Pinanga coronata,C. acuminatissima, and G. rostrata were the most abundant listed seedlings at the study site. At least 27 tree species (21.91%) were recorded as relatively rare (presence represented by only 1–2 individuals), thus requiring special attention in the management of the area.

scholarly journals Vegetation analysis of tree communities at some forest patches in North Sulawesi, Indonesia

2019 ◽  
Vol 20 (3) ◽  
pp. 643-655
Author(s):  
MUSTAID SIREGAR ◽  
HENDRA HELMANTO ◽  
SRI ULIE RAKHMAWATI
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Conservation Status ◽  
Similarity Index ◽  
Natural Forests ◽  
Vegetation Analysis ◽  
Conservation Areas ◽  
Forest Patches ◽  
North Sulawesi ◽  
Tree Communities

Abstract. Siregar M, Helmanto H, Rakhmawati SU. 2019. Vegetation analysis of tree communities at some forest patches in North Sulawesi, Indonesia. Biodiversitas 20: 643-655. Deforestation has caused a decline in forest area in Indonesia. Now natural forests is left in the conservation areas while those outside conservation areas are narrow and fragmented. This study aims to analyze forest vegetation and conservation status of the species of trees in some forest patches in North Sulawesi. Diversity, structure and type of tree communities at five forest patches, namely in the villages of Bukaka, Garini and Lambak in East Bolaang Mongondow District, and Soyowan and Basaan villages in Southeast Minahasa District, North Sulawesi Province were studied using a point center quarter method. The total number of tree species (dbh ≥ 10 cm) across five patches is 84 species. The highest number of species is in Garini (37 species), followed by Lambak (25 species), Soyowan (19 species), Bukaka (10 species) and Basaan (7 species). The species diversity index also shows the same pattern with such species richness, but the dominance index demonstrates opposite trend. The highest evenness index (E) is found in Bukaka (E = 0.9524), followed by Soyowan (E = 0.9061), Garini (E = 0.7873), Basaan (E = 0.7809) and Lambak (E = 0.7099). The most important tree species based on the Species Important Value (SIV) in Bukaka is Ficus sp. (SIV = 52.17), in Garini is Octomeles sumatrana (SIV = 25.73), in Lambak is Boehmeria cylindrica (SIV = 65.03), both in Basaan and Soyowan is Dracontomelon dao with SIV of 96.87 and 46.46 respectively. The beta diversity analyzed based on species similarity index of Jaccard and Whittaker 's index shows a relatively large change in species composition from one location to another. The family of Moraceae, Malvaceae, Anacardiaceae, Annonaceae and Lauraceae are listed as the widest family with a relatively high population. The highest tree density is found in Bukaka (721 trees ha-1), followed by Lambak (482 trees ha-1), Basaan (439 trees ha-1), Garini (292 trees ha-1) and Soyowan (164 trees ha-1). The highest basal area is also found in Garini (53.59 m2 ha-1), followed by Basaan (51.62 m2 ha-1), Lambak (30.74 m2 ha-1), Soyowan (25.13 m2 ha-1) and Bukaka (20.98 m2 ha-1). The results of Cluster analysis using data of species abundance indicate that the five research locations tend to form two types of tree communities. The first community consists of Garini, Soyowan, Lambak and Bukaka, while the second community is represented only by Basaan.

scholarly journals Vegetation Structure of Ebony Leaf Monkey (Trachypithecus auratus) Habitat in Kecubung Ulolanang Nature Preservation Central Java-Indonesia

2018 ◽  
Vol 31 ◽  
pp. 08016
Author(s):  
Rahmawati Ervina ◽  
Hidayat Jafron Wasiq
Keyword(s):  
Food Source ◽  
Habitat Degradation ◽  
Diversity Index ◽  
Tectona Grandis ◽  
Line Transect ◽  
Illegal Hunting ◽  
Central Java ◽  
Leaf Monkey ◽  
Nature Preservation ◽  
Important Value Index

Kecubung Ulolanang Nature Preservation is ebony leaf monkey’s habitats in Central Java Indonesia. Continuously degradation of their population is caused by illegal hunting and habitat degradation that made this species being vulnerable. Habitat conservation is one of important aspects to prevent them from extinction. The purpose of this research was to analyze the vegetation’s structure and composition, which was potentially, becomes habitat and food source for the monkeys. Data collected using purposive sampling with line transect method of four different level of vegetation. Data analysis used Important Value Index and Diversity Index. There were 43 species of vegetation at seedling stage, 18 species at sapling stage, 8 species at poles stage and 27 species at trees stage. Species that had the highest important value index at seedling was Stenochlaena palustri , at the sapling was Gnetum gnemon, at pole was Swietenia mahagoni and at tree was Tectona grandis . Species of trees those were potentially to become habitat (food source) for ebony leaf monkey were T. grandis, Dipterocarpus gracilis, Quercus sundaica and Ficus superba. The highest diversity index was at seedling gwoth stage.

scholarly journals Vegetation Analysis in Community Forests of Terai Region, Nepal

2019 ◽  
Vol 8 (3) ◽  
pp. 68-82
Author(s):  
Rajeev Joshi ◽  
Ramesh Chhetri ◽  
Karan Yadav
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Systematic Sampling ◽  
Vegetation Analysis ◽  
Importance Value Index ◽  
Importance Value ◽  
Community Forests ◽  
Shorea Robusta ◽  
Wiener Diversity Index ◽  
Individual Trees

This paper deals with the study of vegetation analysis of tree species in Ganesh and Ramnagar community forests (CF) of the Terai region.  For the study, altogether 63 concentric sample plots (each plot of 500 m2) were laid using systematic sampling with a sampling intensity of 0.5%.  A total of 967 individual trees representing 16 different tree species were identified. Both CF was dominated by monospecies such as Mallotus philippensis (Ganesh CF) and Shorea robusta (Ramnagar CF) based on the Importance Value Index (I.V.I). Likewise, the Shannon-Wiener diversity index was higher in Ganesh CF whereas the dominance index was low. Similarly, the index of evenness and richness was also slightly higher in Ganesh CF than Ramnagar CF. The study provided information about the structure, composition, and dominance of tree species which is essential for conservation and sustainable management of community forests. Therefore, this article serves as an example of establishing community forests so as to initiate the conservation and preservation of local biodiversity.

scholarly journals STRUKTUR KOMUNITAS MANGROVE DI DESA LESAH, KECAMATAN TAGULANDANG, KABUPATEN SITARO

2020 ◽  
Vol 8 (2) ◽  
pp. 48
Author(s):  
Indra Asman ◽  
Calvyn F A Sondak ◽  
Joshian N W Schaduw ◽  
Deislie R H Kumampung ◽  
Medy Ompi ◽  
...  
Keyword(s):  
Relative Frequency ◽  
Diversity Index ◽  
Line Transect ◽  
Microsoft Excel ◽  
Rhizophora Stylosa ◽  
Ecological Index ◽  
Sonneratia Alba ◽  
Line Transect Method ◽  
Index Value ◽  
Important Value Index

Mangroves are forests that grow in brackish water and are affected by tides and seawater, and these forests grow specifically in places where there are pavement and accumulation of organic material. The purpose of this research is to identify the types of mangroves and determine the structure of the mangrove community in Lesah Village. This research was conducted from September to October 2019. The method used in this research is the quadrant line transect method. The types of mangroves were identified with identification books. Community structure data taken are density, frequency, dominance and important value index (IVI) and then analyzed with Microsoft Excel program. Based on the results of the research, there are 2 types of mangroves found in the research location, Rhizophora stylosa and Sonneratia alba. The highest density value (0.122 ind / m2), relative density (81.88%), frequency types (1), relative frequency (50%). Closure types (1.83 m2), types of relative closure (50.18%), the highest important value index at the research site was (182.12%). The results of the mangrove ecological index data analysis for the diversity index value (0.51), dominance (0.73). Keywords: Structure Community, Mangrove, Lesah Village. Abstrak Mangrove adalah hutan yang tumbuh di air payau, dan dipengaruhi oleh pasang surut air laut dan hutan ini tumbuh khususnya di tempat-tempat di mana terjadi pelumpuaran dan akumulasi bahan oraganik. Tujuan dari penelitian adalah mengidentifikasi jenis-jenis mangrove dan mengetahui struktur komunitas mangrove di Desa Lesah. Penelitian dilaksanakan dari September-Oktober 2019. Metode yang digunakan adalah metode line transek kuadran. Jenis-jenis mangrove di identifikasi dengan bantuan buku identifikasi. Data struktur komunitas yang di ambil adalah kerepatan, ferkuensi, dominasi dan indeks nilai penting(INP) dan kemudian di analisa dengan bantuan program computer Microsoft Excel. Berdasarkan hasil penelitian terdapat 2 jenis mangrove yang terdiri dari, Rhizophora stylosa dan Sonneratia alba. Nilai kerepatan tertinggi (0.122 ind/m2), kerapatan relatif jenis (81.88%), frekuensi jenis (1), frekuensi relatif jenis (50%). Penutupan jenis (1.83 m2), penutupan relatif jenis (50.18%), indeks nilai penting tertinggi dilokasi penelitian adalah (182.12%). Hasil analisis data indeks ekologi mangrove untuk nilai indeks keanekaragaman (0.51), dominasi(0.73). Kata Kunci: Struktur Komunitas, Mangrove, Desa Lesah.

scholarly journals Identification of highland peat vegetation in the Sub-district of Lintong Nihuta, Humbang Hasundutan Regency, North Sumatera, Indonesia

2021 ◽  
Vol 912 (1) ◽  
pp. 012027
Author(s):  
J M Hutagaol ◽  
Bintang ◽  
B Hidayat
Keyword(s):  
Sampling Method ◽  
Diversity Index ◽  
Current Status ◽  
Survey Method ◽  
Analysis Method ◽  
Vegetation Analysis ◽  
Minimum Area ◽  
Important Value Index ◽  
North Sumatra ◽  
Dicranopteris Linearis

Abstract This study aims to identify the structure, composition, and current status of highland peat vegetation in the Lintong Nihuta Sub-district, Humbang Hasundutan Regency, North Sumatra Province. The research conducted from December 2020 to April 2021. This study uses a survey method. The plots were laid using the purposive sampling method considering that the observed plots were those with naturally growing vegetation and accessible terrain. Sampling used the double plot vegetation analysis method with a plot size of 4 x 4 m for seedlings and 20 x 20 m for saplings obtained by measuring the minimum area of the plot. The data obtained were analyzed for frequency calculations, important value index (IVI), and Shannon-Weiner diversity index (H’). The results of the vegetation analysis showed that from the four existing growth classes, only two growth classes were found at the research site, namely seedlings and saplings with a total of 23 species. The vegetation composition is dominated by shrub habitus which indicates that this peatland has been degraded. The dominant species in the study site were Lepinoria mucronata Rich. and Dicranopteris linearis (Burm.) F. Underw. The value of the biodiversity index (H’) is 0.8 with a low criterion which means the vegetation ecosystem at the study site is unstable

scholarly journals Vegetation Analysis of Invasive Plants in Batang Gadis National Park Resort 7 Sopotinjak

2021 ◽  
Vol 5 (1) ◽  
pp. 1-9
Author(s):  
Putri Diana ◽  
Husnarika Febriani ◽  
Melfa Aisyah Hutasuhut
Keyword(s):  
Invasive Plants ◽  
Plant Diversity ◽  
National Park ◽  
Invasive Plant ◽  
Diversity Index ◽  
Vegetation Analysis ◽  
Ageratum Conyzoides ◽  
Purposive Sampling ◽  
Melastoma Malabathricum ◽  
Important Value Index

Introduction: The purpose of this study was to determine the type and diversity of invasive plants in Batang Gadis National Park (BGNP). Materials and Methods: This study was conducted in Batang Gadis National Park Resort 7 Sopotinjak, Mandailing Natal from February until April 2021. This study using the quadratic method by making transects and each transect is divided into 8 plots. Laying plots by purposive sampling as many as 8 plots. Results: BGNP Resort 7 had the invasive plants consisted of 12 families, 20 species and 1287 individuals. The highest species was found in Melastoma malabathricum L (230) and the highest important value index was found in Strobilanthes reptans (35.82%), while the species with the lowest significance index was Ageratum conyzoides (3.40%). The invasive plant diversity index was categorized as moderate (H'= 2.43).

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