Analisis Is Structure and Vegetation Composition Increases Tree and Pillar at Hutan Lindung Oereu Village Bani Bani Is Io Kufeudistrict Malacca Regency

The purpose of this study was to determine the tree and pole-level plant species found in the Oereu Protected Forest Bani-Bani Village Io Kufeu District of Malacca District, To find out the structure and composition of tree-level plant vegetation and poles found in the Oereu Protected Forest in the Bani-Bani Village District of Io Kufeu District of Malacca, and To implement research on the structure and composition of tree and pole level vegetation in the Oereu Protection Forest of Desa Bani-Bani District of Io Kufeu District of Malacca in learning biology in schools. The method used in this study is the quadratic method by placing a plot beside the transect line. At each transect line, 5 observation plots were placed with the size of each plot 20 mx 20 m = 400 m2 for tree level, and 10 mx 10 m = 100 m2 for pole level, with a distance between plots 25 m. analyzing the structure and composition of tree-level vegetation, and poles found at research sites, namely by calculating absolute density, relative density, absolute frequency, relative frequency, basal area, relative basal area, and important value index. The results of the study were found as many as 13 types of plants consisting of 11 families. When looking at the importance value index at tree level vegetation, the highest important value index is Tectona grandis, L, 57.35%, while the one with the lowest important value index is Alstonia scholaris, L 13.22%, and at pole level vegetation, the index value the highest importance is Tectona grandis, L, 36.33%, while the one with the lowest important value index is Leucena lenccophalla, 16.25%. The type of vegetation that has the highest important value index is because it has a fairly high distribution ability and can adapt well to its environment.

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Keanekaragaman Vegetasi Pohon pada Lahan Pekarangan di Desa Tambakrejo Kecamatan Jombang Kabupaten Jombang

Agrotechnology Research Journal ◽

10.20961/agrotechresj.v5i2.51253 ◽

2021 ◽

Vol 5 (2) ◽

pp. 23-28

Author(s):

Indah Fitriani ◽

Nur Faisal Andani ◽

Anggi Indah Yuliana ◽

Ahmad Syaifudin

Keyword(s):

Data Analysis ◽

Diversity Index ◽

Residential Areas ◽

Importance Value Index ◽

Importance Value ◽

H Index ◽

Purposive Sampling ◽

Medium Level ◽

Index Value ◽

Important Value Index

Tambakrejo Village is an urban area located in the Jombang District. Tree vegetation continues to decline; one of the factors is the conversion of the function of yardland to residential areas. Changes in the land area will impact the structure of tree vegetation. This research was conducted by purposive sampling in 4 hamlets. Transects and species were included as random effects using the transect quadrat method (quadrat transect) by purposive sampling with tree size (10x10 m2). The data analysis was done qualitatively and quantitatively. Quantitative data analysis using vegetation analysis, namely: Importance Value Index (IVI), Dominance (C), and Diversity Index (Ĥ). Strata 3 tree vegetation H’ index in Tambakrejo Village, each hamlet is different, for Tambakberas Hamlet, H’ index value is 3.11%, Gedang Hamlet 2.97%, Nglungu Hamlet 2.91%, and for Petengan Hamlet 2, 89%. Most of the hamlets in Tambakrejo Village fall into medium-level diversity. INP index of Tambakberas Hamlet of 22.59% and lowest 2.07%. Gedang of 27.57% and lowest 2.84%, Nglungu of 19.76%, and lowest 2.86% Petengan of 28.79% and lowest 2.73%, The lowest Important Value Index is due to the transfer of the function of yard land for residential areas.

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Composição florística e estrutural de um componente arbóreo em área de cerrado, Paranã-TO

Revista Verde de Agroecologia e Desenvolvimento Sustentável ◽

10.18378/rvads.v10i5.3807 ◽

2015 ◽

Vol 10 (5) ◽

pp. 108

Author(s):

A. B. M. L. Rêgo ◽

P. B. Souza ◽

R. R. Silva ◽

P. L. Rêgo

Keyword(s):

Diversity Index ◽

Basal Area ◽

Floristic Composition ◽

Sensu Stricto ◽

Importance Value Index ◽

Importance Value ◽

Closed Area ◽

Absolute Density ◽

Density Values ◽

Individual Trees

O Cerrado Brasileiro apresenta uma enorme diversidade de fitofisionomias divididas em formações florestais, savânicas e campestres. Com o objetivo de estudar a composição florística e estrutural de um fragmento de cerrado sensu stricto, a fim de fornecer subsídios para conservação e manejo adequado de áreas similares. Foram instaladas sistematicamente quatro parcelas de 25x100m, sendo que as mesmas foram distanciadas 25 m entre si, perfazendo um total de 1,0 hectare de área amostral. No interior das parcelas, foram amostrados todos os indivíduos arbustivo-arbóreos, com circunferência a 1,30m do solo (CAP) maior ou igual a 15 cm. Para obtenção dos parâmetros fitossociológicos densidade relativa (DR), densidade absoluta (DA), dominância absoluta (DoA), dominância relativa (DoR), frequência absoluta (FA), frequência relativa (FR), índice de valor de importância (IVI), índice de valor de cobertura (IVC), índice de diversidade de Shannon (H’) e Pielou (J). Foram amostrados 245 indivíduos, distribuídos em 29 espécies, 29 gêneros pertencentes a 20 famílias, o que corresponde a uma área basal total de 1,94 m².ha-1 e densidade absoluta estimada de 327 ind.ha-1. As espécies que apresentaram maiores valores de (IVI) foram Qualea parviflora (38,45%), Curatella americana (34,53%), Byrsonima verbascifolia (32,20%), Psidium incanescens (31,89%), Pterodon emarginatus (18,62%) e Anachardium humile (18,34%). Qualea parviflora foi a espécie mais representativa dentro do componente arbóreo o que se conclui aos altos valores de densidade e dominância nos estratos.Floristic composition and structural components of a tree in closed area in the municipality of Parana-Tocantins Abstract: The Brazilian Cerrado presents a huge diversity of vegetation types divided into forests, savannas and country. In order to study the floristic and structural composition of a cerrado fragment in order to provide subsidies for conservation and proper management of similar areas. Systematically they were installed four installments of 25x100 m, being that they were spaced 25 m apart, totaling 1.0 hectare sample area. Inside the plots were sampled every shrub and individual trees with circumference at 1.30 m soil (CAP) greater than or equal to 15 cm. To obtain the Phytosociological relative density parameters (DR), absolute density (DA), absolute dominance (DoA), relative dominance (DoR), absolute frequency (AF), relative frequency (RF), importance value index (IVI) Coverage value index (CVI), Shannon diversity index (H ') and Pielou (J). We sampled 245 individuals belonging to 29 species, 29 genera belonging to 20 families, which corresponds to a basal area of 1.94 m².ha-1 and estimated absolute density of 327 ind.ha-1. The species showing higher values of (IVI) were Qualea parviflora (38.45%), American Curatella (34.53%), Byrsonima verbascifolia (32.20%), Psidium incanescens (31.89%), Pterodon emarginatus (18.62%) and Anachardium humile (18.34%). Qualea parviflora was the most representative species within the arboreal component which is concluded to high density values and dominance in the strata.

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Changes in the structure of a savanna forest over a six-year period in the Amazon-Cerrado transition, Mato Grosso state, Brazil

Rodriguésia ◽

10.1590/2175-7860201162215 ◽

2011 ◽

Vol 62 (2) ◽

pp. 425-436 ◽

Cited By ~ 12

Author(s):

Daniel David Franczak ◽

Beatriz Schwantes Marimon ◽

Ben Hur Marimon-Junior ◽

Henrique Augusto Mews ◽

Leandro Maracahipes ◽

...

Keyword(s):

Community Dynamics ◽

Basal Area ◽

Importance Value ◽

Mato Grosso ◽

Transition Zones ◽

Absolute Density ◽

Gap Opening ◽

Set Up ◽

The One

Abstract Vegetation changes in transition zones are still poorly studied. Changes in the vegetation structure of a savanna forest (cerradão) were assessed in the Amazon-Cerrado transition (14º42'2.3"S; 52º21'2.6"W), eastern Mato Grosso, within a period of six years (2002, 2005 and 2008). In 2002, fifty plots of 10 × 10 m were set up, where all trees with DSH30 ≥ 5 cm were measured; in 2005 and 2008 the plots were re-inventoried. In 2008, 84 species from 70 genera and 37 families were sampled; absolute density was 1,998 individuals/ha and basal area was 25.95 m2.ha-1. On the one hand, the absolute density of live individuals decreased from 2005 to 2008 (2,066 individuals/ha); on the other hand, the basal area increased in 2008 compared to 2005 (23.56 m2.ha-1) and 2002 (1,884 individuals/ha and 21.38 m2.ha-1). The species with the highest importance value in the period were Hirtella glandulosa, Tachigali vulgaris and Xylopia aromatica. Except for these three species, all other species underwent hierarchic changes in the importance value, indicating that most species frequently alternate. Community structure exhibited changes throughout the period; hence, we suggest investigations on the role of T. vulgaris in these changes, since environmental conditions caused by gap opening from the fall of senile individuals of this pioneer species with a short life cycle may contribute to community dynamics.

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Composition and Pattern of Vegetation Distribution at the Tree Level in the Forest Area of Sorong Nature Tourism Park

Agrologia ◽

10.30598/ajibt.v10i2.1424 ◽

2021 ◽

Vol 10 (2) ◽

Author(s):

Ponisri Ponisri ◽

Fajrianto Saeni ◽

Lona H. Nanlohy

Keyword(s):

Relative Density ◽

Plant Species ◽

Relative Frequency ◽

Tree Level ◽

Line Transect ◽

Importance Value Index ◽

Importance Value ◽

Nature Tourism ◽

Relative Dominance ◽

Important Value Index

This study aims to determine the species composition, frequency, density, dominance, important value index (INP) and the distribution of tree species. The method used in this research is the Line Transect Plot Method. The total area of the sample plots is 1 ha (10.000 m2) with a total of 25 sample plots, which are placed purposively at the study site. Observational data were analyzed according to the parameters and described qualitatively and quantitatively and presented in the form of tabulations and pictures. The composition of vegetation types in the Sorong Nature Tourism Park forest contains 50 plant species, namely 30 known families and 3 plant species not yet traded, scientific and family names. The number of tree levels is 36 species with the largest density value (K) for resak (Vatica papuana) and guava (Syzygium, sp ) which is 29.81/ha with a Relative Density (KR) of 15.897% with the smallest density value (K). 0.962/ha, and the value of relative density (KR) was 0.5128%, respectively. The largest frequency (F) value is found in guava with a value of 0.731, relative frequency (FR) of 13.19%, and the lowest value of frequency (F) is 0.038 %, the smallest relative frequency (FR) is 0.694%. With the largest dominance value (C) in resak plants of 2,561 and relative dominance of 15.95%, while the lowest dominance was 0.033 and relative dominance was 0.208%. Where the highest Importance Value Index (INP) is on the guava tree at 43.117 and the lowest Important Value Index (INP) is in the Trichadenia tree, sp 1.3964. The distribution pattern at the tree level is based on the morista index, which is spread in groups or in clusters.Keywords: Composition, Vegetation, Nature Park

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KEANEKARAGAMAN JENIS VEGETASI MANGROVE DI DESA DUSUN BESAR KECAMATAN PULAU MAYA KABUPATEN KAYONG UTARA

JURNAL HUTAN LESTARI ◽

10.26418/jhl.v8i2.40074 ◽

2020 ◽

Vol 8 (2) ◽

Author(s):

Cici Khairunnisa ◽

Eddy Thamrin ◽

Hari Prayogo

Keyword(s):

Species Diversity ◽

Mangrove Forest ◽

Avicennia Marina ◽

Forest Vegetation ◽

Forest Area ◽

Tree Level ◽

Importance Value Index ◽

Importance Value ◽

Mangrove Vegetation ◽

Vegetation Species

The diversity of mangrove vegetation is a community that has different characteristics from other communities. Diversity is an important component in mangrove management, but so far the availability of data related to mangroves is still very minimal, including those related to the species diversity of mangrove forest vegetation in the region. This study aims to obtain data on species diversity of vegetation found in the mangrove forest area of Dusun Besar Village, Pulau Maya District, Kayong Utara Regency. Method used was a combination of path and plot method, and the determination of the location and research path location were carried out using purposive sampling. The results of observation and data analysis showed that the dominant vegetation species with the highest importance value index (INP) for seedlings, saplings and trees was the Avicennia marina, namely the INP value of seedlings 37.04%, the INP values of sapling 65.24%, and the value of INP a tree rate of 65. Based on the results of the most dominant analysis found the species of Avicennia marina with a value of C = 0.03430 for seedling, C = 0.04729 for sapling, and C = 0.04736 for tree level. The diversity of mangrove forest vegetation species in Dusun Besar Village for seedlings, saplings and trees is low because it has an H 'value <1, and the abundance of mangrove vegetation species was not evenly distributed in each forest area because it only has an e value <1.Keywords: Dusun Besar Village, Mangrove Forest, Species Diversity

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Potential Regeneration of Mangrove Coastal of Payum Beach Merauke District

Musamus Fisheries and Marine Journal ◽

10.35724/mfmj.v2i1.1869 ◽

2019 ◽

pp. 11-23

Author(s):

Stenly M.B.S Wairara ◽

Reny Sianturi

Keyword(s):

Tree Level ◽

Sampling Location ◽

Mangrove Species ◽

Transect Line ◽

Rhizophora Apiculata ◽

Sonneratia Alba ◽

Avicennia Alba ◽

Data Collection Technique ◽

Aegialitis Annulata ◽

Important Value Index

The purpose of this study was to analyze the regeneration potential of mangroves found on the coast of Payum, Merauke Regency, Papua Province. This research was conducted in August-October 2018. The data collection technique was purposive sampling using Transect Line Plots. The sampling location was chosen based on the representation of the presence of mangroves in three locations, namely zones A, B and C. The results of this study explained that there were three tree-level mangrove species, namely Avicennia alba, Rhizophora apiculata and Sonneratia alba. Type A. alba dominates in zone A with an important value index (INP) of 205.76%, zone B does not have a certain type that dominates, while Rhizophora apiculata dominates in zone C with INP 185.35%. The potential of the three mangrove species in zones A, B and C is good. Aegialitis annulata species are only found in sapling and seedling levels. In zones A and B are classified as new while in zone C is classified as bad. This study concluded that Avicennia alba, Rhizophora apiculata and Sonneratia alba had the potential to regenerate in all three locations (Zones A, B and C) compared to Aegialitis annulata.

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Diversity of Weeds and Population Dynamics of Predators and Prey Present in Wheat-Mustard Ecosystem at Paklihawa, Rupandehi, Nepal

Journal of the Institute of Agriculture and Animal Science ◽

10.3126/jiaas.v35i1.22538 ◽

2018 ◽

Vol 35 (1) ◽

pp. 173-181

Author(s):

S. Khanal ◽

S. Adhikari ◽

A. Bhattarai ◽

S. Shrestha

Keyword(s):

Population Dynamics ◽

Chenopodium Album ◽

Effect Of Temperature ◽

Weed Species ◽

Importance Value Index ◽

Importance Value ◽

Mustard Aphid ◽

Wooden Frame ◽

Index Value ◽

The Given

A study was conducted at Institute of Agriculture and Animal Science (IAAS), Paklihawa Rupandehi, agronomy field to study the diversity of weeds and population dynamics of predators and prey in wheat-mustard ecosystem. The study was conducted by quadrate sampling method using the wooden frame by selecting 40 sample spots, and locating its coordinates. Predator, prey, some of the beneficial and harmful insects as well as weed species was recorded in 5 days interval in the study. Relationships between the population of the mustard aphid and wheat aphid, lady bird beetle to maximum and minimum temperature were recorded in order to know the effect of temperature in relation to population density. Number of mustard aphid and its nymph has shown the positive significant relationship with the population of the spider in the wheat mustard ecosystem. Shannon Weiner Index value was calculated and the species richness was found to be 2.63 with the effective number of species value 9. The species evenness value was found to be 0.83 in the studied ecosystem which signifies that the given weed ecosystem is somewhat even. The importance value index (IVI) of the given ecosystem with the value of different weed species was calculated and it was found that the weed Anagalis arvensis was ranked as first with the IVI value of 57.98 following Vicia sativa and Chenopodium album. This signifies that the species Anagalis arvensis has greater control over the wheat mustard ecosystem of Paklihawa, Rupandehi.

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Ervas daninha em pastagens: uma abordagem fitossociológica nas áreas do Ceará

Agrarian ◽

10.30612/agrarian.v12i45.7048 ◽

2019 ◽

Vol 12 (45) ◽

pp. 279-285

Author(s):

Josefa Maria Francieli da Silva ◽

Hercules Gustavo Santos Sarmento ◽

Hellen Thayse Nascimento Araújo ◽

Alexandre Bosco de Oliveira ◽

Lamartine Soares Cardoso de Oliveira

Keyword(s):

Relative Frequency ◽

Similarity Index ◽

Cyperus Rotundus ◽

Weed Species ◽

Importance Value Index ◽

Importance Value ◽

Brachiaria Decumbens ◽

The One ◽

Absolute Dominance ◽

Nicandra Physalodes

The aim of this study was to study the phytosociology of weed species in areas of pasture cultivated with Brachiaria decumbens and Cynodon sp. (Tifton 85), in Ceará State, Brazil. The square inventory methodology was used in order to assess the weed community. Weed samples were quantified and classified by family, genus and species, using books and classification keys. The classification and quantification data of species allowed to calculate the following phytosociological variables: frequency (F), relative frequency (Fr), density (D), relative density (Dr), absolute dominance (DoA), relative dominance (DoR), importance value index (IVI), and similarity index (IS). The Amaranthaceae family was the one with the greatest intensity of species in both areas, represented mainly by Alternanthera tenera colla and Amaranthus viridis. In the area cultivated with B. decumbens, Cyperus rotundus presented higher results for frequency, density and abundance. In the Tifton 85 area, Nicandra physalodes presented higher values of density and abundance. The similarity of weed populations in pasture areas was 42.11%, with four species common to both areas.

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Fuel beds variation of coastal tropical freshwater forested wetlands in three disturbance regimes at La Encrucijada, Biosphere Reserve, Mexico

10.21203/rs.3.rs-42037/v1 ◽

2020 ◽

Author(s):

Romeo de Jesús Barrios Calderón ◽

Dulce Infante Mata ◽

José Germán Flores Garnica ◽

Jony Ramiro Torres Velázquez ◽

Zulia Mayari Sánchez-Mejía ◽

...

Keyword(s):

Forest Fires ◽

Biosphere Reserve ◽

Basal Area ◽

Forested Wetlands ◽

Material Surface ◽

Importance Value Index ◽

Importance Value ◽

High Accumulation ◽

Horizontal Structure ◽

Tropical Freshwater

Abstract Background: Tropical freshwater forested wetlands in coastal regions are rapidly disappearing, one of the causes is forest fires. This is caused by high accumulation of fuel beds that can vary in origin and type. Therefore, the objective of this study was to characterize the fuel beds in tropical freshwater forested wetlands with three different level of disturbance at El Castaño, La Encrucijada Biosphere Reserve.Methods: Seventeen sampling units were used to described the strates of forest fuel beds (canopy, sub-canopy and understory) in both the vertical and horizontal stratum. Quantity and quality of dead (fallen woody material, surface litterfall and fermented litterfall) fuels were characterized using the planars intersections technique.Results: A total of eight tree species, two shrubs, five lianas and two herbaceous species were found in tropical freshwater forested wetlands. The vertical structure concentrates the highest proportion of trees between 2 and 12 m high, including the first two defined height classes. The horizontal structure denotes a higher percentage of trees with a normal diameter between 2.5 to 7.5 cm (61.4%) of the total. The sites none disturbance presented the highest arboreal density (2,686 ind. ha− 1), however the highest basal area was found in the sites with medium disturbance (39.41 m2 ha− 1). The richness and diversity of species shows that the Fisher, Margalef, Shannon and Simpson α indices were higher in the sites undisturbed, while the Berger-Parker index shows greater dominance in the sites high disturbance. Pachira aquatica Aubl. was the species with the highest importance value index, and contributes the most to the fuel beds. The average accumulation of dead fuel beds was higher in sites with high disturbance (222.18 ± 33.62 t ha− 1), with the largest accumulations of woody fuels occurring in the 1 h, 10 h and 1000 h classes, the latter in a state of fermentation.Conclusions: It’s important to consider the probability of occurrence of surface fires is high. In these tropical freshwater forested wetlands, independent of disturbance, underground fires have the same probability and the intensity will depend on the depth of the organic matter layer. This study contributes define fire-prone areas in these ecosystems. The results are of great importance to design fire prevention strategies.

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KOMPOSISI DAN STRUKTUR HUTAN RIPARIAN SEBAGAI PENAHAN GELOMBANG DI DESA SEMAYANG KABUPATEN KUTAI KARTANEGARA

Jurnal Pendidikan Matematika dan IPA ◽

10.26418/jpmipa.v10i1.27515 ◽

2019 ◽

Vol 10 (1) ◽

pp. 116

Author(s):

Muhammad Daryadi A ◽

Medi Hendra ◽

Nova Hariani

Keyword(s):

Riparian Forest ◽

Forest Vegetation ◽

Tree Level ◽

Vegetation Density ◽

Importance Value Index ◽

Importance Value ◽

Horizontal Structure ◽

Flood Season ◽

Composition And Structure

AbstractThis study aimed to determine the composition and structure of Semayang forest and the Importance Value Index (IVI) of riparian forest in its role of reducing the wave rate. The method used is multilevel plot method of 20x20 m for sampling of tree level, 5x5 m for sapling level and 2x2 m for seedling level. The result showed that the highest Importance Value Index at tree level was dominated by 3 species, they were L. javanicum (101,663), M. speciosa (76,201) and G. renghas (65,962). At sapling level dominated by P. indica (102,990). At seedling level dominated by M. pigra (95,004)andP. brevistipitata (70,109). In addition, Semayang riparian forest has an ecological function as a wave retaining. It can be seen based on the vegetation density and horizontal structure of species that make up the forest. Vegetation density is predicted to reduce the rate of Semayang lake waves that occur during flood season. Keywords: Composition and Structure, Riparian Forest, Semayang Lake.

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