scholarly journals Dynamics of vegetation structure and composition within early regeneration forest in the Danau Bangko Protected Area, Jambi, Indonesia

2021 ◽  
Vol 2 (1) ◽  
pp. 52-61
Author(s):  
Asep Sadili ◽  
Dolly Priatna ◽  
Sutanto Sutanto
Keyword(s):  
Vegetation Structure ◽  
Protected Area ◽  
Dominant Species ◽  
Permanent Plot ◽  
Growth Phases ◽  
Plantation Forest ◽  
Plot Structure ◽  
Early Regeneration ◽  
Tree Sapling ◽  
Dynamics Of Vegetation

 An analysis of the growth dynamics of a 1-ha  (100 m x 100 m) permanent plot was carried out in the Danau Bangko Protected Area (DBPA) in March 2020. DBPA is part of the industrial plantation forest concession of PT Rimba Hutani Mas (PT RHM) in Jambi Province. The study aims to determine the dynamics of vegetation structure and composition between 2018 and 2020 in early regeneration forest. All trees tagged in 2018 were remeasured in 2020. Trees that had not been tagged previously but were 10 cm in diameter at breast height (DBH) were identified as a new recruit and tagged with a new number. Observations and data analysis were carried out on three stages of growth phases, namely in the tree phase ( 10 cm DBH), sapling phase (10 cm DBH), and seedling phase (height 1.5 m). The results showed that the number of species, genera, and families within the tree and sapling phases were high, but were low in the seedling phase. The dominant species in the tree phase in 2018,  Alseodaphne bancana,  had been  replaced by Archidendron bubalinum  in 2020, whereas the dominant species in the sapling phase (Rothmania sp.) and seedling phase (Aporusa microsphaera) remained the same from  2018  to 2020 . Mortality rates in all growth phases (tree, sapling and seedling) together is 4.67%. Recruitment into the tree phase from 2018 to 2020 was 2.67%,  consisting of eight species, eight genera, and seven families. Within one hectare permanent plot, all members of each tree species were distributed randomly. The vertical structure of the forest area is dominated by stratum C (4-20 m height). The results of hypothesis testing for each phase (tree, sapling, seedling) were different, however overall the results showed that the plot structure and composition had changed. Studi dinamika hutan dilakukan di Kawasan Lindung Danau Bangko (KLDB) pada Maret 2020 dengan menggunakan pendekatan plot permanen seluas satu hektar (100 m x 100 m). KLDB merupakan bagian dari konsesi hutan tanaman industri PT Rimba Hutani Mas (PT RHM) di Provinsi Jambi. Penelitian ini bertujuan untuk mengetahui dinamika struktur dan komposisi vegetasi antara pengukuran tahun 2018 dan 2020, khususnya pada areal dengan tutupan Belukar Tua (BT). Diameter semua pohon yang telah diberi tanda nomor pada tahun 2018 diukur kembali. Pohon yang belum diberi tanda sebelumnya tetapi diameternya 10 cm setinggi dada (DBH) ditetapkan sebagai rekrutmen baru dan diberi tanda dengan nomor baru. Pengamatan dan analisis data dilakukan terhadap tiga tahap tahap pertumbuhan, yaitu tingkat pohon (10 cm DBH), tingkat pancang (10 cm DBH), dan tingkat semai (tinggi 1,5 m). Hasil penelitian menunjukkan bahwa jumlah spesies, jumlah marga, dan jumlah famili pada tingkat pohon dan pancang tinggi, sedangkan pada tingkat semai rendah. Jenis dominan pada tingkat pohon pada tahun 2018 adalah Alseodaphne bancana telah digantikan oleh Archidendron bubalinum pada tahun 2020, sedangkan pada tingkat pancang (Rothmania sp) dan tingkat semai (Aporusa microsphaera) merupakan jenis yang dominan baik pada tahun 2018 maupun pada tahun 2020. Angka kematian pada semua tahapan pertumbuhan bervariasi dengan rata-rata 4,67%. Rekrutmen di tingkat pohon 2,67% yang terdiri dari 8 spesies, 8 marga, dan 7 famili. Secara keseluruhan, semua spesies tersebar secara acak. Tinggi tajuk pohon didominasi oleh stratum C (tinggi 4 m - 20 m). Hasil pengujian hipotesis pada setiap tingkatan (pohon, pancang, semai) berbeda, namun hasil penggabungan semua data menunjukkan bahwa telah terjadi dinamika.

scholarly journals Composition of Vegetation Types and Structures in Gunung Ciremai National Park Forest

2021 ◽  
Vol 748 (1) ◽  
pp. 012009
Author(s):  
Agusyadi Ismail ◽  
Yayan Hendrayana ◽  
Dadan Ramadani ◽  
Sri Umiyati
Keyword(s):  
Plant Species ◽  
Vegetation Structure ◽  
National Park ◽  
Stand Structure ◽  
Complex Structure ◽  
Forest Vegetation ◽  
Intensity Data ◽  
Vegetation Types ◽  
Growth Phases ◽  
High Level

Abstract Mount Ciremai National Park forest that area had been encroached. Because of that condition, stand structure especially the species composition and vegetation structure need to be researched. The aim of this research was to identify plant species and analyze forest vegetation structure. This research was conducted between March–April 2018 in the 15.500 ha area with 0.02% sampling intensity. Data was collected using grid line method that consisted of 34 sample plots with the 10 m distance between the plots and 20 m between the lines. The numbers of identified plant species at the research location were 43 species, classified by 10 families and 24 genera. Cinnamomum sintoc has a high level of dominance species. The forest vegetation was consisting by the different growth phases. The tree phase has the highest density of 3672 species/ha, while the seedling phase was lowest density of 1060 species/ha. The forest crown stratification were consisting of A, B, C, D and E stratum. The highest number of plants were from C strata for 4651 trees and the least from A strata with 25 trees with the highest tree was 42 m. Could be concluded that the composition of Mount Ciremai National Park forest have so many number of species and complex structure vegetation forest.

Recovery Dynamics of Vegetation and Soil Properties in Karst Rocky Desertification Areas in Guizhou, China

2012 ◽  
Vol 518-523 ◽  
pp. 4532-4544 ◽  
Author(s):  
Hong Yan Liu ◽  
Fang Liu
Keyword(s):  
Soil Fertility ◽  
Soil Properties ◽  
Vegetation Structure ◽  
Vegetation Recovery ◽  
Native Forest ◽  
Forming Process ◽  
Karst Rocky Desertification ◽  
Rocky Desertification ◽  
Available Nitrogen ◽  
Dynamics Of Vegetation

Abstract. Dynamics of vegetation and soil properties responses to vegetation recovery in the selected 72 Karst desertification sites in Guizhou, China were studied. Six typical and representative vegetation types along a chronosequence of vegetation recovery (corn land, sparse grass, regeneration forest, shrub, grass and shrub, and native forest with 0, 3-5, 10-15, 20-30, 30-40, and >100 yrs, respectively) were selected for the study of the plant species, vegetation features as well as soil physical & chemical properties in order to assess interaction between soil properties and vegetation structure. It was found that vegetation species had dry-resistant characteristics because of their extensive exposure to the basement rocks and thinness soil. Grass community was always coarse grass, shrub was generally dominated by vines, thorn bushes and tree species were almost leather-like, single and mini-type leaf plants. Factor analysis showed that the 3 factors, soil fertility, pH and clay, explain 67.97 % of total variance among the 19 soil property parameters. Soil fertility changed significantly effects included the increasing of soil organic matter, total and available nitrogen, humic acid, CEC, fuvic acid, exchange Ca, porosity and total P but decreasing bulk density. This trend was followed by enhancing of bio-enrichment capacity along the chronosequence of vegetation recovering process. Soil pH had no significant correlation with the vegetation recovery stages because it was determined by soil forming process and characteristic of parent materials. The factor clay only decreased slightly in the recovery stages. Cluster analysis indicated that vegetation structure could develop within short time under anthropocentric interfering, but soil fertility only accumulated with annual litter decomposing. We can conclude that recovery of vegetation community structure proceeded restoration of soil function.

scholarly journals Dynamics of vegetation structure in a fragmented landscape in Minas Gerais, Brazil

2019 ◽  
Vol 79 (4) ◽  
pp. 678-685 ◽  
Author(s):  
N. V. Salomão ◽  
M. D. D. Silva ◽  
E. L. M. Machado
Keyword(s):  
Edge Effect ◽  
Fire Resistance ◽  
Edge Effects ◽  
Vegetation Structure ◽  
Patch Dynamics ◽  
Minas Gerais ◽  
Fragmented Landscape ◽  
Landscape Changes ◽  
Dynamics Of Vegetation

Abstract Considering that area and edge effects are the most important factors that lead to landscape changes from the fragmentation of terrestrial communities, the present study aimed to analyze changes in the structure of vegetation classes of a fragmented landscape. The methodology employed was based on a model of patch dynamics for the years between 1979 and 2015. The analysis was performed with quantitative (area, shape and edge effect) and qualitative (low declivity of the terrain, fire resistance and tolerance to variation in light) variables of the classes of vegetation. Processes of retraction and expansion of the vegetation classes were identified, as well as the alteration of the structure of the fragments, which resulted in the intensification of the edge effect.

scholarly journals Factors affecting Bittern Botaurus stellaris distribution in a Mediterranean wetland

2004 ◽  
Vol 14 (3) ◽  
pp. 153-164 ◽  
Author(s):  
M. CLAUDIA ADAMO ◽  
LUCA PUGLISI ◽  
N. EMILIO BALDACCINI
Keyword(s):  
Water Level ◽  
Vegetation Structure ◽  
Temporal Dynamics ◽  
Temporal Variations ◽  
Important Variable ◽  
Vegetation Density ◽  
Factors Affecting ◽  
Nesting Site ◽  
Seasonally Flooded ◽  
Dynamics Of Vegetation

The habitat requirements of a resident population of Bittern Botaurus stellaris were investigated during the breeding season in a Mediterranean upland wetland, with particular reference to the area's isolation from other wetlands, its small size and hydrological conditions. Vegetation structure and water-level were described and associated with booming male and nesting female distribution within the marsh. A logistic regression model showed that water-level was the only significant factor affecting the distribution of booming males, which occupied areas seasonally flooded with shallower water (< 1 m). Females nested in seasonally flooded zones, while vegetation density appeared an important variable for nesting-site choice. Management of the wet area is discussed and the importance of a better understanding of the temporal dynamics of vegetation cover and spatial and temporal variations in water-level, and their possible effects on prey distribution, is highlighted.

Assessment of vegetation structure and human impacts in the protected area of Alédjo (Togo)

2012 ◽  
pp. n/a-n/a ◽  
Author(s):  
Kperkouma Wala ◽  
Agbélessessi Y. Woegan ◽  
Wiyao Borozi ◽  
Marra Dourma ◽  
Abalo Atato ◽  
...  
Keyword(s):  
Vegetation Structure ◽  
Protected Area ◽  
Human Impacts

scholarly journals Current diversity of small mammals of the “Sarykum Barkhans” of Dagestan Reserve

2021 ◽  
Vol 35 ◽  
pp. 00010
Author(s):  
Marinat Gudova ◽  
Fatimat Tembotova ◽  
Marita Emkuzheva ◽  
Albina Amshokova ◽  
Ekaterina Kuchinova
Keyword(s):  
Species Diversity ◽  
Small Mammals ◽  
Indicator Species ◽  
Protected Area ◽  
Dominant Species ◽  
Nature Reserve ◽  
Vital Activity ◽  
Terrestrial Mammals ◽  
Spring And Autumn Period ◽  
First Time

We studied the species diversity and abundance of small terrestrial mammals in the spring and autumn period of 2016-2019 in four groups of habitats of the protected area “Sarykum barkhans” of the Dagestan Nature Reserve: barkhan, floodplain forest, ailant plantations, the territory of the cordon. During the study period, 10 species of terrestrial small mammals were recorded – E. roumanicus, C. suaveolens, C. leucodon, M. musculus, M. macedonicus, A. fulvipectus, C. migratorius, M. socialis, D. sagitta, D. nitedula. Apodemus and Mus mice are the dominant species in the studied area. Mice of Apodemus and M. macedonicus were registered for the first time in the territory of barchans. Indicator species of xerophilic ecosystems – C. migratorius, M. socialis, D. sagitta, were recorded locally, exclusively in the only biotope of barkhan. H. auritus, S. pygmaeus, A. major, M. arvalis, A. terrestris, R. norvegicus, M. tamariscinus, which were previously noted by several authors, were not registered (both traces of vital activity and animals themselves) in the studied area during the whole period of research (2016-2019). Seasonal and annual fluctuations of species diversity and abundance taking into account groups of biotopes and small mammal habitats were revealed.

scholarly journals The main trends in the dynamics of vegetation on the territory affected by the catastrophic eruption of Bezymyanny Volcano on March 30, 1956 (Kamchatka)

2019 ◽  
Vol 151 (5) ◽  
pp. 32-47
Author(s):  
S. Yu. Grishin
Keyword(s):  
Dominant Species ◽  
Pyroclastic Flows ◽  
Impact Zone ◽  
Shiveluch Volcano ◽  
Pyroclastic Surge ◽  
Subalpine Zone ◽  
Previous State ◽  
The Impact ◽  
Dynamics Of Vegetation ◽  
Vast Territory

The transformation of the vegetation cover in the impact zone of the 1956 eruption, in territories covered by various deposits, is considered. As a result of a gigantic eruption (VEI 5), vegetation was exposed to a series of different volcanic impacts. Five main categories of events are distinguished: the movement of material of a huge volume of volcano edifice over a large distance as a result of a giant clastic avalanch, the pyroclastic surge of a direct blast, the pyroclastic flows, the formation of a giant eruptive cloud and ashfalls, as well as the lahars. The volume of erupted (initially high-temperature) deposits was, according to various estimates, in the amount of 1.35-1.5 km3, the volume of cold deposits of a clastic avalanche was 0.5-0.8 km3. The volume of lahar was 0.5 km3. The area covered by the pyroclastic wave of the directed explosion was about 500 km2. Within this lesion zone, deposits of pyroclastic flows have occupied 30-40 km2, and clastic avalanche deposits from 35 to 60 km2. Below 900 m above sea level (a.s.l.) these deposits buried cover of subalpine dwarf alder (dominant species is Alnus fruticosa) and mountain meadow vegetation, as well as forest vegetation (dominant species is Betula ermanii) at its upper limit. Forest and partially dwarf alder vegetation was destroyed on a vast territory mainly under the influence of a pyroclastic wave (in the altitude range from 700-800 to 200 m a.s.l.), as well as lahars (in the range of 250-50 m a.s.l.). Primary successions occur in the alpine and partially subalpine zone on avalanche deposits and pyroclastic flows deposits, as well as in the upper part of the zone impacted by pyroclastic surge of the direct blast (40-45 km2). In part of the territories where thick deposits of the lahars were formed, primary successions also probably occurred. In the zone of primary successions, deposits of a clastic avalanche are settled by plants most slowly due to not-favourable edaphic factors. The process is somewhat more efficient on the deposits of pyroclastic flows (the same ratio was noted on the Shiveluch Volcano). The surface overlapped by deposits of the pyroclastic surge is populated relatively quickly. Secondary succession occurs in the zone of damage to the forest and dwarf trees by the influence of a pyroclastic wave, as well as in the zone of passage of the lahars. Restoring of vegetation to its previous state will take from 50 to ~500 years on different deposits and in different parts of an impact zone.

scholarly journals About evaluation of vegetation changes on permanent sample areas in Järvselja protected compartment

2015 ◽  
Vol 63 (1) ◽  
pp. 5-28
Author(s):  
Jaanus Paal ◽  
Kristiina Jürisoo ◽  
Taimi Paal
Keyword(s):  
Vegetation Structure ◽  
Dominant Species ◽  
Nature Reserve ◽  
Forest Area ◽  
Experiment Planning ◽  
Vegetation Changes ◽  
Virgin Forest ◽  
Sample Area ◽  
Tree Layer ◽  
Moss Layer

Abstract The changes in tree layer saplings, shrub, field and moss layer in Järvselja Nature Reserve virgin forest compartment (JS226) were analysed on the ground of data collected in 1955, 1985, 1993 and 2012. Four forest stands (sub-compartments) were studied; in every stand one 4 × 4 m sample area was established: area A1 represented Hepatica nobilis and Anemone nemoralis dominanted spruce stand, area A3 – drained transitional mire pine forest, area A4 – Mercurialis perennis-rich spruce stand and area A5 – Hepatica nobilis and Anemone nemoralis dominanted aspen stand. The number of tree layer saplings and shrub layer stems, as well as their species content have changed largely in all sample areas, being a bit more stable only on area A1. In field layer the abundance of initial dominant species changed remarkably in all areas or were replaced by other species in the course of succession. Changes in moss layer were the most striking in drained transition mire forest (area A3), where Pleurozium schreberi, Sphagnum centrale and S. capillifolium dominating in 1955 were replaced by S. centrale in 1993. The experiment planning in the current study is regrettably insufficient: to study forest communities succession using only one 4 × 4 m sample area in every stand does not allow to gather representative data about the vegetation structure and its variation limits. Moreover, in that way it is not possible to separate the time-induced successional trend from the drainage impact that has an obviously prevailing importance in forest compartment JS226 being surrounded by ditches.

scholarly journals Komposisi dan Vegetasi Hutan Mangrove di Pulau-Pulau Kecil, di Pasaman Barat (Mangrove Forest Composition and Vegetation Small Islands at West Pasaman)

2014 ◽  
Vol 19 (2) ◽  
pp. 113
Author(s):  
Eni Kamal ◽  
Hasnil Haris
Keyword(s):  
Plant Species ◽  
Vegetation Structure ◽  
Mangrove Forest ◽  
Dominant Species ◽  
Mangrove Ecosystem ◽  
Forest Composition ◽  
Small Islands ◽  
The West ◽  
Type Composition ◽  
Important Value Index

Komposisi dan vegetasi ekosistem mangrove pada suatu kawasan yang tumbuh di pulau-pulau kecil umumnya tidak sama dan tergantung kepada ekologi dari ekosistem pulau tersebut. Tujuan ini penelitian ini adalah untuk memperoleh informasi dari komposisi, struktur vegetasidan jenis mangrove yang hidup pada masing-masing pulau kecil di kawasan Pasaman Barat. Metode ang digunakan adalah survei lapangan untuk mendapatkan jenis, komposisi dan struktur vegetasi dari masing-masing pulau dengan melakukan teknik  transek kuadrat. Pada penelitian yang telah dilakukan di beberapa tiga pulau di Kabupaten Pasaman Barat (pulau Taming, pulau Harimau, dan pulau Panjang) menunjukkan bahwa ke tiga pulau tersebut telah teridentifikasi tumbuhan 15 spesies, 11 famili, 2 famili dan 5 spesies merupakan masuk pada kategori mangrove sejati dan spesies dominan adalah R. stylosa dengan indek nilai penting (IVi) untuk tingkat pohon 192,88% di pulau Taming, pulau Harimau 36 spesies, 24 famili, 9 spesies dan 4 famili masuk pada mangrove sejati, spesies dominan R. apiculata, (IVi ) adalah 229,82%, sedangkan pada pulau Panjang 18 spesies, 14 famili, dimana 5 spesies dan 2 famili masuk kategori mangrove sejati, spesies dominan R. mucronata dengan (IVi ) 92,98%. Dari masing-masing pulau menunjukkan komposisi, struktur vegetasi dan kedominan speises yang berbeda dan ini disebabkan oleh perbedaan  subtrat yang dominan yang terdapat pada masing-masing pulau. Kata kunci: komposisi; vegetasi; mangrove, pulau-pulau kecil; Pasaman Barat Composition and vegetation of mangrove ecosystem in an area including that grown in small islands is different and depends on ecology and ecosystem of the islands. The purpose of the research is for getting the information of composition, vegetation structure and mangrove type that grown an each small islands in west Pasaman area. The method use was a survey of the field to get the type, composition and vegetation structure of each island by using transectsquares technique.In the research that has been done on several islands in the West Pasaman (Taming Island, Harimau Island, and Panjang Island), have been identified plants on Tamang Island that had 15 species and 11 families, which 2 families and 5 spesies were categorized as true mangroves and the dominant spesies is R. stylosa with important value index (IVi) is 192.88%, on Harimau Island found 36 species and 24 families, which 9 species and 4 families were categorized as true mangroves and the dominant is R. apiculata with 229.82% (Vi), while on Panjang Island found 18 plant species and 14 families, which 5 species and 2 families were categorized as true mangroves, the dominant species is R. mucronata with 92.98%. From each island showed composition, vegetation structure and different dominant spesies and this different is caused by the dominant substrate fand on each island. Keywords: composition; vegetation; mangrove; small islands; West Pasaman

scholarly journals Effect of microrelief and water-table on vegetation dynamics in silty loam saline soils of coastal areas

2021 ◽  
Vol 3 (3) ◽  
Author(s):  
Mohammad Mansouri ◽  
Seyed Akbar Javadi ◽  
Mohammad Jafari ◽  
Hossein Arzani
Keyword(s):  
Water Table ◽  
Vegetation Structure ◽  
Soil Moisture Content ◽  
Floristic Composition ◽  
Growing Season ◽  
Soil Characteristics ◽  
Coastal Areas ◽  
Saline Soils ◽  
Silty Loam ◽  
Dynamics Of Vegetation

AbstractMicrorelief (MR) and water-table (WT) severely influence plant communities formation and development in silty loam saline soils of coastal areas. This research aimed to investigate the effect of MR and WT fluctuations on the dynamics of vegetation in coastal silty loam saline soils of southern Iran. Soil characteristics, vegetation structure and composition were investigated through the growing season, and obtained data were submitted to a canonical correspondence analysis. Based on the results, MR (min = 0.5 m and max = 1.0 m) and WT (max = 1 m) fluctuations significantly changed both structure and floristic composition through change in soil characteristics (Sig. < 0.05). Factors of soil moisture content, SAR and Na severely changed under MR and WT fluctuations and received new eigenvalues through the year. Our results demonstrated that a minimum change in MR and/or WT influence soil properties and vegetation structure and composition in silty loam saline soils of coastal areas.

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