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 KEANEKARAGAMAN JENIS POHON DI REPONG DAMAR PESISIR TENGAH DAN PESISIR SELATAN

2021 ◽  
Vol 9 (2) ◽  
pp. 260
Author(s):  
Mefki Sunardi ◽  
Afif Bintoro ◽  
Rusita Rusita
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Forest Products ◽  
Buffer Zone ◽  
Systematic Sampling ◽  
Importance Value Index ◽  
Importance Value ◽  
Wiener Diversity Index ◽  
Starting Point ◽  
Non Timber Forest Products

Repong Damar is a form of hereditary since the days of the Dutch colonial government owned by the Krui Lampung people in the West Coast. Repong damar functions as a buffer zone in the Bukit Barisan Selatan National Park. The flagship product from Non-Timber Forest Products (NTFPs) in Indonesia found in Krui Pesisir Barat is Damar Mata cat (Shorea javanica). The management and use of resin repong can cause various types of plants. Damar reong found in the Regency of Pesisir Barat has very important benefits for life, and therefore it is necessary to act as a preservation effort for this repong damar to remain sustainable and continue to grow. One of the efforts made is to analyze the diversity of tree species that are in the resin dunk. This study aims to determine the diversity of tree species in the Central Pongir Pongon Repong Pahmungan and Tenumbang Pekon Coastal Equipment and to compare the diversity of tree species in the Central Pekon Pahmungan and South Pekon Tenumbang Pekon Coastal Areas. This research was conducted in August-September 2019 which is located in two locations, namely Tenumbang Pekon, Pesisir Selatan District and Pahmungan Pahmungan Tengah Pesisir Tengah District, Pesisir Barat District. The method used to determine the diversity of tree species using the plot line method where the determination of the plot starting point is done by Systematic sampling with random sampling. Analysis of the data to be used is the relative density (KR), relative frequency (FR), and relative closure area (CR). Importance Value Index (INP) = KR + FR + CR (Indriyanto, 2006). The Diversity Index used is the Shanon Wiener Diversity Index (H '). The results of the research that have been carried out there are 28 species of trees found in Pahonungan Pahmungan, Central Pesisir Tengah and 32 species found in Tenumbang Pekon, Pesisir Selatan District and Diversity of tree species in Pahonungan Pekm Tengah, Pesisir Tengah District, 1.86 and Diversity of tree species in Pekon Tenumbang. Pesisir Selatan District at 2.44.

scholarly journals The Species Diversity and Structure of The Limited Production Forest in Arui Watershed of Manokwari District of West Papua, Indonesia

2019 ◽  
Vol 11 (2) ◽  
pp. 279-288
Author(s):  
Mahmud Mahmud ◽  
Ambar Kusumandari ◽  
Sudarmadji Sudarmadji ◽  
Nunuk Supriyatno
Keyword(s):  
Species Diversity ◽  
Wiener Index ◽  
Systematic Sampling ◽  
Forest Conversion ◽  
Vegetation Analysis ◽  
Importance Value Index ◽  
Importance Value ◽  
Forestry Sector ◽  
West Papua ◽  
Chisocheton Ceramicus

The detailed causal factors of flood have not been established, whether because of the damage of upper watershed, sedimentation resulting in shallow river, forest conversion, the decrease in abundance and structure or high rainfall. The study aimed at finding out the species diversity and structure of the limited production forest (LPF) from the seedling to the tree stage of Arui watershed in Manokwari district. The species diversity was determined based on Shannon-Wiener index, while vegetation structure was determined based on Importance Value Index. There were totally 92 plots of samples drawn using systematic sampling. The results of vegetation analysis showed that there were 174 species of 43 families with the species diversity of 1.5-1.8 that was categorized as moderate. The four dominant species that were always found in seedling, sapling, pole and tree stages included: Pometia pinnata, Teijsmanniodendron bogoriense, Chisocheton ceramicus, and Horsfieldia irya. The conversion of the LPF into non-forestry sector for the purpose of accelerating development must be reviewed by considering hydrology, land, biodiversity, and social and regional aspects in order to prevent and to reduce flood in the coming days.

scholarly journals Floristic, structural, and allometric equations to estimate arboreal volume and biomass in a cerradão site

2017 ◽  
Vol 38 (4) ◽  
pp. 1691
Author(s):  
Eder Pereira Miguel ◽  
Alba Valéria Rezende ◽  
Fabrício Assis Leal ◽  
Eraldo Aparecido Trondoli Matricardi ◽  
José Marcelo Imana Encinas ◽  
...  
Keyword(s):  
Tree Species ◽  
Vertical Structure ◽  
Diversity Index ◽  
Species Group ◽  
Systematic Sampling ◽  
Ecological Groups ◽  
Floristic Diversity ◽  
Importance Value ◽  
Horizontal Structure ◽  
Standing Trees

This objective of this study was to characterize the floristic, structural, and ecological groups and to estimate the arboreal volume and biomass of a cerradão site in Palmas, Tocantins, Brazil. A forest inventory was conducted on 10.15 ha of the study area. Plots of 400-m2 were used for systematic sampling. All standing trees (dead or alive) with a breast-height diameter (DHB) greater than 5 cm were identified and measured. Floristic diversity and horizontal structure were assessed using the Shannon and importance value indices, respectively. Forest vertical structure was classified into three stratata and the tree species were categorized into ecological groups. Ninety tree volumes were rigorously cubed and weighed. Fresh- and dry biomass were sampled and estimated. Mathematical models were applied and adjusted to estimate tree volume and biomass. It was observed that the species Myrcia splendens and Emmotum nitens and the families Fabaceae and Chrysobalanaceae were dominant in our study site. The pioneer (613 individuals ha-1) and climax (530 individuals ha-1) tree species group predominated. The floristic diversity index was estimated as 3.35 nats ind- 1. The vertical structure analysis indicated fewer individuals in the superior stratum (13%) compared to the medium (63%) and inferior (24%) stratum. The Schumacher and Hall model showed better results with regard to estimated forest production. Forest volume and biomass estimates were 126.71 m³ ha-1 and 61.67 Mg ha-1, respectively. The studied cerradão area had high floristic diversity and climax species predominated. Since this cerradão is in close proximity to the Amazon biome, its volume and biomass stocks were higher than those estimated for other cerradão and forest formations within the Cerrado biome.

scholarly journals Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape

2020 ◽  
Vol 22 (1) ◽  
Author(s):  
Ida Ardiyaningrum ◽  
MARIA THERESIA SRI BUDIASTUTI ◽  
KOMARIAH KOMARIAH
Keyword(s):  
Species Composition ◽  
Agricultural Landscape ◽  
Short Communication ◽  
Diversity Index ◽  
Sampling Technique ◽  
Terrestrial Ecosystems ◽  
Importance Value Index ◽  
Importance Value ◽  
Vegetation Diversity ◽  
Wiener Diversity Index

Abstract. Ardiyaningrum I, Budiastuti MTS, Komariah. 2021. Short Communication: Species composition and diversity of vegetation in dryland agricultural landscape. Biodiversitas 22: 65-71. Drylands are a part of the terrestrial ecosystems with a relatively larger area compared to wetlands. Selo has dryland with steep slopes and high rainfall, resulting in relatively high soil erosion. The land use in this sub-district is dominated by plantations and agriculture, with conditions that have not been fully balanced by trees as a means of controlling erosion and supporting vegetation diversity. Therefore, studies on biodiversity are important as an indicator of dryland sustainability, especially in terms of soil and water conservations. This research aimed to study the species composition and diversity of vegetation in the dryland agricultural landscape in Selo Sub-district, Boyolali District, Central Java Province, Indonesia. Vegetation analysis was performed by using the quadratic sampling technique for tree category, pole category, sapling category, and seedling categories. The results indicated that Fabaceae had the highest number of species. Tree species with the highest Importance Value Index were Toona sureni, Artocarpus heterophyllus, and Casuarina junghuhniana, respectively. The Shanon-Wiener Diversity Index showed that the vegetation at tree, pole, and sapling stages had a moderate diversity, and seedling-stage vegetation had a low diversity.

scholarly journals Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia

2019 ◽  
Vol 20 (4) ◽  
pp. 1215-1221
Author(s):  
ERNIK YULIANA ◽  
YUNI TRI HEWINDATI ◽  
ADI WINATA ◽  
WIBOWO A DJATMIKO ◽  
ATI RAHADIATI
Keyword(s):  
Tree Species ◽  
Diversity Index ◽  
Forest Edge ◽  
Importance Value Index ◽  
Importance Value ◽  
Mangrove Species ◽  
Protection Forest ◽  
Mangrove Tree ◽  
Mangrove Vegetation ◽  
Study Sites

Abstract. Yuliana E, Hewindati YT, Winata A, Djatmiko WA, Rahadiati A. 2019. Diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra, Indonesia. Biodiversitas 20: 1215-1221. The purpose of the study was to analyze the flora diversity and characteristics of mangrove vegetation in Pulau Rimau Protection Forest, Banyuasin District, South Sumatra. Data collected were the number and girth diameter of mangrove tree species, and aquatic ecology parameters using transect method. The sample plots size were 2m×2 m; 5m×5 m; 10m×10 m; for seedling, sapling, and tree, respectively. The observation plots were arranged in a row of 120 m length on two sides of the forest edge, namely Calik Riverbank and Banyuasin Riverbank. Data were analyzed using importance value index (IVI), Simpson’s diversity index and Sørensen’s community similarity. The study revealed that there were differences in mangrove characteristics in two study sites. There were 57 plant species identified inside and outside sample plots, but only 15 species (26.32%) among them were categorized as true mangrove species. Inside the sample plots, there were 11 and 10 mangrove tree species recorded on the Calik Riverbank and Banyuasin Riverbank, respectively, but only 7 species among them were found in both sites. The mangroves on Calik Riverbank were dominated by Nypa (IVI 53.59%) and Bruguiera (51.12%), while those on Banyuasin Riverbank were dominated by Sonneratia (66.91%) and Avicennia (51.73%). The Simpson’s diversity index for Calik Riverbank and Banyuasin Riverbank was 0.82 and 0.78, respectively, whereas the Sørensen’s coefficient of community between the two sites was 0.67.

scholarly journals Estructura y diversidad de la vegetación del matorral espinoso tamaulipeco con condiciones prístinas en el noreste de México

2018 ◽  
Vol 66 (4) ◽  
Author(s):  
Carlos Gerardo Valdez Marroquín ◽  
Marco Antonio Guzmán ◽  
Arcadio Valdés ◽  
Rahim Forougbakhch ◽  
Marco Antonio Alvarado ◽  
...  
Keyword(s):  
Plant Community ◽  
Diversity Index ◽  
Importance Value Index ◽  
Importance Value ◽  
Coverage Density ◽  
A Value ◽  
Wiener Diversity Index ◽  
Structural Variables ◽  
Species Area ◽  
The One

Tamaulipan scrubland is a type of shrub vegetation endemic to Northeastern Mexico and Southern Texas in the U.S.The structure of the Tamaulipan scrubland was evaluated in the study, establishing the minimum area with plots of 256 m2 by determining the species-area curve, valuing the composition and diversity of the strata of the plant species (arboreal, shrub, low forest, semi shrubby, herbaceous and epiphytes); three sampling sites of 16 × 16 m were established. Dasometric information such as height, diameter and cup coverage was recorded to determine the structural variables of coverage, density, relative density, dominance, relative dominance, frequency, relative frequency and Importance Value Index, as well as estimation of the Margalef richness index, Shannon-Wiener diversity index, Menhinick, Simpson and Pielou’s evenness index. The floristic richness was of 33 species distributed in 30 genera and 19 families, leaving the predominance value of the highest species of Leguminosae (Fabaceae). Six strata were recognized for the studied vegetation from which the highest IVI was Helietta parvifolia with 17.68 % for the shrubby stratum with 14 species and within the plant community of the MET the IVI was 8.53 %; for the low forest stratum with 8 species, the one with the highest IVI was Bernardia myricifolia with 39.20 %; and within the vegetal community 7.74 % for the semi shrubby there were 7 species where Lantana canescens has an IVI of 60.38 % and of 13.09 % inside the community. For the herbaceous stratum with 2 species, Wissadula sp. dominates with 54.20 % and 2.06 % for the community. In the arboreal stratum, the species with the highest IVI was Celtis laevigata with 100.00 % and when integrated to the plant community, it presented a value of 1.98 %. For the stratum formed by the epiphytes, the species Adiantum capillus-veneris had an IVI of 100 % and inside the plant community presented an IVI of 1.55 %. For the MET plant community studied, an H' value of 2.42 and a DMg value of 4.34 was obtained.

scholarly journals Natural regeneration potential of Madhupur National Park, Bangladesh

2020 ◽  
Vol 49 (4) ◽  
pp. 989-996
Author(s):  
Md Rayhanur Rahman ◽  
MK Hossain ◽  
Md Akhter Hossain ◽  
Mohammad Emran Hasan
Keyword(s):  
Tree Species ◽  
Natural Regeneration ◽  
National Park ◽  
Alien Invasive Species ◽  
Importance Value Index ◽  
Importance Value ◽  
Height Range ◽  
Shorea Robusta ◽  
Extensive Collection ◽  
Litsea Glutinosa

Natural regeneration is an essential tool to evaluate the overall health of a forest ecosystem. Natural regeneration of the tree species in Madhupur National Park showed 47 regenerating tree species among which Shorea robusta has maximum density (18,046 seedlings per ha) followed by Aporosa sp., whereas minimum density (19 seedling per ha) was recorded for Cassia nodosa, Litsea glutinosa, Grewia asiatica and Syzygium cumini, respectively. Relative density, relative frequency and relative abundance were estimated to assess the Importance Value Index (IVI) of the seedlings of different tree species. IVI of S. robusta was highest (66.25 out of 300) followed by Mallotus philippensis (27.33). G. asiatica, Derris robusta, and L. glutinosa showed the lowest IVI (0.93) among the regenerating tree species. Distribution of seedlings into different height classes showed that maximum number (31.4%) of seedlings in the height range of 50 - <100 cm. Among the recorded seedlings, Protium serratum showed maximum (11%) recruitment success. Alien invasive species, pineapple and banana based participatory agroforestry, frequent occurrence of fire, extensive collection of fuelwood and litter are the potential threats to the natural regeneration of Madhupur National Park.

scholarly journals ANALISIS VEGETASI DI KAWASAN SEMPADAN EMBUNG BUAL, DESA AIK BUAL KECAMATAN KOPANG KABUPATEN LOMBOK TENGAH

2019 ◽  
Vol 2 (2) ◽  
pp. 119
Author(s):  
Diah Permata Sari ◽  
Kornelia Webliana B ◽  
Maiser Syaputra
Keyword(s):  
Water Conservation ◽  
Diversity Index ◽  
Tourist Attraction ◽  
Vegetation Analysis ◽  
Importance Value Index ◽  
Importance Value ◽  
Border Area ◽  
High Category ◽  
A Value ◽  
Life Phase

Embung Bual is one of the tourist attraction objects in Lombok Tengah Regency. Vegetation analysis in the border area of Embung Bual is necessary to know dan to identify the structure and composition of vegetation in the border area of Embung Bual because vegetation is an important elemen in water conservation efforts. This study aims to analyze the structure and composition by analyzing the importance value index and diversity index in the border area of Embung Bual. Vegetation in the border area of Embung Bual was analyzed by using the striped path method with nested quadrats. The vegetation data obtained were carried out with an importance value index (INP) and diversity index. The results showed that the Embung Bual border area was dominated by Mahogany species at the tree life phase with an INP value of 60.21%, the pole life phase was dominated by Cempaka species with an INP value of 74.36%, at the sapling phase was dominated by Kumbi with INP value 55,09% and the seedling life phase was dominated by Mahogany species with an INP value of 88.54%. Embung Bual border area has a composition of 22 species and has a Simpson diversity index with a value of 0.86 which is included in the high category, and has a Shannon diversity index with a value of 2.43 which is included in the high category

scholarly journals Studi Ekologi Kuantitatif Hutan Pilan Sebagai Dasar Pengembangan Kebun Raya Gianyar

2018 ◽  
Vol 12 (2) ◽  
pp. 184
Author(s):  
Farid Kuswantoro ◽  
I Nyoman Lugrayasa ◽  
Wawan Sujarwo
Keyword(s):  
Ecological Study ◽  
Diversity Index ◽  
Similarity Index ◽  
Principal Component ◽  
Importance Value Index ◽  
Importance Value ◽  
Sacred Forest ◽  
Wiener Diversity Index ◽  
Level Data ◽  
Study Results

Penelitian ekologi kuantitatif diperlukan sebagai baseline dalam proses pembangunan dan pengembangan kebun raya di masa mendatang. Penelitian ini bertujuan untuk mendapatkan data vegetasi di kawasan hutan yang akan dibangun kebun raya dan menganalisisnya secara kuantitatif. Penelitian dilakukan dengan metode petak kuadrat (PU), dengan petak ukur 20 m x 20 m untuk pengamatan tingkat pohon dan tiang, serta 2 mx 2 m untuk pengamatan tingkat tumbuhan bawah. Analisis data dilakukan mengunakan indeks nilai penting, indeks keanekaragaman ShannonWiener, indeks similaritas, analisis kluster, dan analisis komponen utama (PCA). Komunitas tumbuhan di hutan Pilan didominasi oleh Magnolia montana (Blume) Figlar dan Arenga pinnata (Wurmb) Merr. pada tingkat pohon serta Daemonorops sp. pada tingkat tumbuhan bawah. Indeks keanekaragaman pada tingkat pohon dan tiang menunjukan nilai sedang dan rendah pada tingkat tumbuhan bawah, sementara indeks similaritas mayoritas kombinasi PU adalah rendah. Hasil kluster menunjukan terbentuknya dua subset pada kedua tingkat pertumbuhan, dimana PU VI berada di luar kluster sedangkan PCA menunjukan setiap PU mendukung jenis tumbuhan yang berbeda-beda. Hasil penelitian ini menyimpulkan bahwa komposisi vegetasi hutan Pilan mendekati klimaks yang disebabkan karena statusnya sebagai hutan keramat sehingga relatif bebas dari gangguan. Faktor-faktor yang diduga mempengaruhi perbedaan komposisi tumbuhan di setiap PU adalah pH tanah, intensitas sinar matahari, jenis pohon yang dominan, efek tepi, dan persebaran bijioleh hewan.Quantitative Ecological Study of Pilan Forest as a Baseline for Development of Gianyar Botanic GardenAbstractQuantitative ecological research is needed as a baseline in the future construction and development of botanic gardens. This study aims to acquired the vegetation data in the forest area where a botanic garden will be established and analyse it quantitatively. The study was conducted using the quadrat plot (PU) method, with a plot measuring 20 m x 20 m for observation and tagging of all trees and saplings, as well as 2 mx2 m for observation of the understorey level. Data analysis was performed by utilising the importance value index, Shannon-Wiener diversity index, similarity index, cluster analysis, and principal component analysis (PCA). Plant communities in Pilan Forest were dominated by Magnolia montana(Blume) Figlar and Arenga pinnata(Wurmb) Merr. at the canopy level and Daemonorops sp. in the understorey level. The diversity index was moderate and low respectively, while the similarity index was mostly low. The clustering results showed the formation of two subsets in both growth rate as the PU VI was outside the cluster and the PCA indicated that each plot supports different plant species. The study results concluded that the composition of vegetation at Pilan forest is approaching the maximum diversity, and is relatively undisturbed due to its status as a sacred forest. Factors thought to affect the different composition of plants in each plot was the pH of the soil, the intensity of sunlight, dominant tree species, edge effects and distribution of seeds by animals.

scholarly journals KEANEKARAGAMAN DAN KEGUNAAN TUMBUHAN BAWAH PADA BEBERAPA TEGAKAN DI ARBORETUM BALAI PENELITIAN DAN PENGEMBANGAN TEKNOLOGI SERAT TANAMAN HUTAN (BP2TSTH) KUOK

2021 ◽  
Vol 16 (2) ◽  
pp. 128-152
Author(s):  
Arifin Budi Siswanto ◽  
Hadinoto Hadinoto ◽  
Azwin Azwin
Keyword(s):  
Diversity Index ◽  
Systematic Sampling ◽  
Technology Research ◽  
Plant Fiber ◽  
Importance Value Index ◽  
Importance Value ◽  
Mixed Stands ◽  
Plot Size ◽  
Air Infiltration ◽  
Fiber Technology

Underground plants have an important role in soil and air conservation efforts, namely as a source of organic matter, preventing erosion, a source of germplasm and increasing air infiltration into the soil. This study aims to identify the types, diversity and use of understorey under stands of meranti, gaharu and mixed stands in the arboretum of the Kuok Forest Plant Fiber Technology Research and Development Institute (BP2TSTH). The data collection method used systematic sampling with a random start, with a sampling intensity of 5%. The number of plots observed for meranti, gaharu and mixed stands were 50, 25 and 25, respectively, with a plot size of 2 x 2 (m). In the stands were found 17 families of undergrowth consisting of 23 species and 10,338 individuals. In the agarwood stands there are 10 families of undergrowth consisting of 13 species and 9,696 individuals. In the agarwood stands there are 11 families with a diversity of 13 species and 10,328 individuals. Diversity Index and Evenness Index in meranti, gaharu and mixed stands respectively; 1.25 and 0.4; 0.72 and 0.28; 0.72 and 0.28. Paspalum conjugatum is a understorey species with the highest Importance Value Index (IVI) in the three stands.

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