scholarly journals KEANEKARAGAMAN JENIS POHON SEBAGAI SALAH SATU INDIKATOR KESEHATAN HUTAN LINDUNG (Studi Kasus di Kawasan Hutan Lindung yang Dikelola oleh HKm Beringin Jaya)

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Rahmat Safei ◽  
Hari Kaskoyo ◽  
Arief Darmawan ◽  
Fansuri Fikri Haikal
Keyword(s):  
Tree Species ◽  
Life Support ◽  
Great Influence ◽  
Forest Health ◽  
Stable Condition ◽  
Health Condition ◽  
Forest Area ◽  
Main Function ◽  
Biodiversity Indicators ◽  
Protected Forests

Protection forest becomes a forest area with the main function as protection of life support systems. The health condition of protected forests has a great influence on the environment of the ecosystem. It is important to assess the health of protected forests in view of their main function. Thus to determine the health condition of the forest, one indicator that can be used is tree biodiversity. Biodiversity is the richness of life found on earth. Assessment of biodiversity indicators is very necessary to do because it is sensitive to changes, ecological system indicators, spatial heterogeneity, temporal, and and the order in the food chain. This study aims to determine the diversity of tree species in protected forest areas managed by HKm Beringin Jaya as an indicator of forest health assessment. The study was conducted using the Forest Health Monitoring (FHM) method. The results showed that the final value of forest health status with indicators of biodiversity (tree species diversity) in the protected forest area managed by HKm Beringin Jaya was in the good category of 50% in cluster plots (2, 5 and 6) and bad by 50% on cluster plots (1, 3 and 4), thus showing that the protected forest area managed by HKm Beringin Jaya has a fairly healthy (stable) condition with a moderate category.

scholarly journals RESOLUSI KONFLIK TENURIAL PEMANFAATAN KAWASAN HUTAN DI HUTAN LINDUNG RIMBO DONOK KABUPATEN KEPAHIYANG (The Tenurial Conflicts Resolution of Utilization of Forest Areas in Protected Forests Rimbo Donok Kepahiang District)

2020 ◽  
Vol 26 (1) ◽  
pp. 28
Author(s):  
Gunggung Senoaji ◽  
Muhamad Fajrin Hidayat ◽  
Iskandar Iskandar
Keyword(s):  
Land Use ◽  
Agroforestry System ◽  
Forest Area ◽  
Buffer System ◽  
Main Function ◽  
Crop Land ◽  
Protected Forests ◽  
Agricultural Plants ◽  
Mapping Techniques ◽  
Land Management System

ABSTRAKHutan Lindung Rimbo Donok memiliki luas 377,99 Ha, terletak di Kabupaten Kepahiyang Provinsi Bengkulu. Fungsi utama dari hutan lindung ini adalah sebagai sistem penyangga kehidupan untuk mengatur tata air, mencegah banjir dan erosi, dan menjaga kesuburan tanah. Seharusnya, tutupan vegetasi kawasan hutan ini berupa hutan primer. Namun fakta di lapangan, seluruh kawasan hutan ini telah berubah menjadi lahan pertanian. Penelitian ini bertujuan untuk mengetahui karakteristik masyarakat penggarap lahan di kawasan hutan lindung Rimbo Donok dan mencari alternatif resolusi konflik yang terjadi. Metode penelitian yang digunakan adalah teknik pemetaan, pengamatan lapangan dan wawancara. Hasil penelitian menunjukkan bahwa penggunaan lahan di hutan lindung Rimbo Donok seluruhnya berupa lahan pertanian, yang digarap masyarakat secara tidak sah dengan menanam kopi dan tanaman pertanian lainnya. Rata-rata luas lahan garapan untuk setiap kepala keluarga sekitar 1,33 ha. Resolusi konflik pemanfaatan hutan ini harus bisa mengakomodir fungsi sosial ekonomi dan fungsi perlindungan lingkungan. Upaya legalisasi pemanfatan hutan harus dilakukan dengan berbagai skema seperti : hutan kemasyarakatan, hutan desa, atau kemitraan. Pengolahan lahannya dapat menggunakan sistem agroforestry. ABSTRACTRimbo Donok Protected Forest covers 377.99 Ha area, located in Kepahiyang District, Bengkulu Province, Indonesia. The main function of protected forest is to protect life buffer system. Therefore, the land use must be forest. In Rimbo Donok Protected Forest, there has been a change of land use from forest land to crop land. There has been tenurial conflicts in the utilization of forest area. The objective of this study was to determine the characteristics of tenants in Rimbo Donok protected forest area and choose alternatives to resolve tenurial conflicts. The data of uses were collected through mapping techniques, field observation, and interview. The results showed that land use of Rimbo Donok Protected Forest in 2016 is entirely crop land. All of this protected forest have been illegaly occupied by people. These people are planting coffe and other agricultural plants in the area. The average land area of head family is 1.33 ha. This conflict resolution of forest utilization should be able to accommodate the socio-economic function and environmental protection function. Efforts to legalize the utilization of forests should be carried out under various schemes such as: community forest, village forest, or partnership. the agroforestry system can be selected as its land management system.

scholarly journals Health condition parameters for deciduous trees in the forest stands of Trostyanetske Forest Enterprise

2019 ◽  
pp. 129-137
Author(s):  
Valentyna Meshkova ◽  
Tetiana Pyvovar ◽  
Oleksandr Tovstukha
Keyword(s):  
Tree Species ◽  
Forest Health ◽  
Alnus Glutinosa ◽  
Condition Index ◽  
Health Condition ◽  
Forest Steppe ◽  
Left Bank ◽  
Epicormic Shoots ◽  
Black Alder ◽  
Tree Defoliation

The aim of research was to evaluate the variability and relations with forest health condition its main parameters (defoliation, dieback and epicormic shoots occurrence) in seven tree species: Norway maple (Acer platanoides L.), black alder (Alnus glutinosa L.), silver birch (Betula pendula Roth.), European ash (Fraxinus excelsior L.), English oak (Quercus robur L.), small-leaved lime (Tilia cordata Mill.), and white elm (Ulmus laevis Pall). Research was carried out in 2018 in Trostyanetske Forest Enterprise (Left-bank Forest Steppe; Sumy region). Diameter (DBH), Kraft class, and category of health condition were assessed for each tree. Defoliation, dieback and epicormic shoots occurrence were evaluated as proportion of trees with respective symptoms. Severity of each parameter of tree health condition was estimated using respective scores. No tree species is defoliated over 50%. A birch is characterized by the lowest health condition index (1.6) for living trees, dieback (10%), epicormic shoots occurrence (15.9%) and recently died trees proportion (0.7%), but high proportion of trees died over year ago (10.7%). An oak is characterized by the highest health condition index (2.1), proportion of trees with dieback (45.4%) and epicormic shoots (21.7%). Proportion of trees with dieback is 21.5 to 25% for alder, lime and maple, a bit higher for elm and ash (30.9 and 31.3% respectively). DBH, Kraft class, and health condition index significantly correlate with health condition parameters of analyzed tree species, but the most of correlations are very slight and slight. Correlation between health condition index and defoliation score is significant, positive and high for all tree species (from 0.78 for alder to 0.9 for birch). Correlation between health condition index and dieback score is positive and significant for all tree species, is slight for ash, birch, lime, and alder, and moderate for maple, oak and elm. Correlation between health condition index and epicormic shoots occurrence is significant and positive for all tree species except birch, but is very slight in all cases except elm, where it is slight.

scholarly journals ANALISIS PRODUKTIVITAS SEBAGAI SALAH SATU INDIKATOR KESEHATAN HUTAN (Studi Kasus Pada Hutan Rakyat Jati di Kecamatan Natar Kabupaten Lampung Selatan Provinsi Lampung)

2020 ◽  
Vol 4 (2) ◽  
pp. 204-215
Author(s):  
Siti Fauzia Rochmah ◽  
Rahmat Safe’i ◽  
Afif Bintoro ◽  
Hari Kaskoyo
Keyword(s):  
Raw Materials ◽  
Forest Health ◽  
Health Condition ◽  
Main Function ◽  
Community Forests ◽  
Health Value ◽  
Health Values ◽  
Productivity Data ◽  
Productivity Indicators ◽  
Forest Managers

Currently, community forests are increasingly showing an important role in meeting the timber demand for the timber industry. This can be seen from the log production which continues to decline every year. The reduced supply of wood from natural and plantation forests is one of the reasons why community forests are used as an alternative to meet the demand for industrial wood raw materials. This study aims to determine the parameter value of productivity indicators and health status of jati community forests in Natar District. To achieve this, the stages include: determining the number of plot calculators, making FHM plot clusters in teak community forests, collecting data and analyzing productivity data and the final forest health value. The results of this study indicate that jati community forests in Natar District, South Lampung Regency have good forest health values ​​based on productivity indicators. This will affect the management of community forests in the future with the main function of forests, namely production. By knowing the productivity value and health condition of the forest, managers can make appropriate forest management decisions.

scholarly journals Wood-inhabiting fungal responses to forest naturalness vary among morpho-groups

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Purhonen Jenna ◽  
Abrego Nerea ◽  
Komonen Atte ◽  
Huhtinen Seppo ◽  
Kotiranta Heikki ◽  
...  
Keyword(s):  
Tree Species ◽  
Boreal Forests ◽  
Negative Impact ◽  
Important Variable ◽  
Host Tree ◽  
Conservation Areas ◽  
Fungal Community Composition ◽  
Forest Sites ◽  
Protected Forests ◽  
Host Tree Species

AbstractThe general negative impact of forestry on wood-inhabiting fungal diversity is well recognized, yet the effect of forest naturalness is poorly disentangled among different fungal groups inhabiting dead wood of different tree species. We studied the relationship between forest naturalness, log characteristics and diversity of different fungal morpho-groups inhabiting large decaying logs of similar quality in spruce dominated boreal forests. We sampled all non-lichenized fruitbodies from birch, spruce, pine and aspen in 12 semi-natural forest sites of varying level of naturalness. The overall fungal community composition was mostly determined by host tree species. However, when assessing the relevance of the environmental variables separately for each tree species, the most important variable varied, naturalness being the most important explanatory variable for fungi inhabiting pine and aspen. More strikingly, the overall species richness increased as the forest naturalness increased, both at the site and log levels. At the site scale, the pattern was mostly driven by the discoid and pyrenoid morpho-groups inhabiting pine, whereas at the log scale, it was driven by pileate and resupinate morpho-groups inhabiting spruce. Although our study demonstrates that formerly managed protected forests serve as effective conservation areas for most wood-inhabiting fungal groups, it also shows that conservation planning and management should account for group- or host tree -specific responses.

scholarly journals Managing Biodiversity: Impacts of Legal Protection in Mountain Forests of the Himalayas

Forests ◽  
2018 ◽  
Vol 9 (8) ◽  
pp. 476 ◽  
Author(s):  
Inger Måren ◽  
Lila Sharma
Keyword(s):  
Protected Areas ◽  
National Park ◽  
Flood Control ◽  
Forest Health ◽  
Legal Protection ◽  
Woody Species ◽  
Walking Distance ◽  
Participatory Management ◽  
Protected Forests ◽  
Agro Forestry

Legal protection has been used as means of conserving forests and associated biodiversity in many regions of the world since the eighteenth century. However, most forests in the global south, even those within protected areas, are influenced by human activities. Himalayan forests harbour much of the biodiversity of the region, maintain subsistence livelihoods, and provide regional and global ecosystem services like water regulation, flood control, and carbon sequestration. Yet few studies have quantitatively studied the impacts of legal protection on forest health and biodiversity. We assess woody biodiversity and forest health in relation to legal protection and biomass extraction in forests inside and outside Langtang National Park in Nepal (n = 180). We found more woody species in protected forests. Of the 69 woody species recorded, 47% occurred at both sites. Within protected forests, we found differences in forest health largely related to the intensity of biomass extraction expressed as walking distance to settlement. The closer the forest was to settlements, the heavier degradation it suffered, showing that within agro-forestry systems in the Himalayas, the resource-consumer distance is typically determining the intensity of biomass extraction. Our research brings forth the need to better address the drivers of resource extraction from protected areas in order to mitigate this degradation. It also brings forth the need to contribute to the development of appropriate participatory management programmes outside areas of formal protection in order to sustain both biodiversity and ecosystem service delivery from these forests for the future.

The Optimal Selection of Extrusion Parameters of As-Cast TC27 Titanium Alloy Based on Processing-Map

2017 ◽  
Vol 898 ◽  
pp. 1134-1139
Author(s):  
Xue Fei Li ◽  
Ai Xue Sha ◽  
Xu Huang ◽  
Li Jun Huang
Keyword(s):  
Titanium Alloy ◽  
Flow Stress ◽  
Strain Rate ◽  
Processing Map ◽  
True Strain ◽  
Great Influence ◽  
Stable Condition ◽  
Dynamic Materials ◽  
Dynamic Materials Model ◽  
Selection Of

The hot deformation behavior of TC27 titanium alloy at the temperatures of 900-1150 °C and the strain rate of 0.01-10 s-1, the height reduction of 70%, was investigated in the isothermal compression test to identify the optimal extrusion parameters. The processing-map of TC27 titanium alloy was constructed based on dynamic materials model (DMM) and principle of Prasad*s instability. The conclusion shows that temperature and strain rate of deformation had a great influence on flow stress. At the beginning of deformation, the flow stress increased quickly with the augment of true strain and decreased slowly after flow stress reaching to the maximum value. Finally, flow stress tended to relatively stable condition. The flow stress decreased with the increase of temperature and increased with the increase of strain rate. The TC27 titanium alloy was sensitive to temperature and strain rate. Processing-map exhibited two peak efficiencies of power dissipation; one peak was 49% at 900°C/0.01 s-1, which dynamic recovery occured. The other peak was also 49% at 1050 °C /0.01s-1, which dynamic recrystallization occured in the domain. Besides, there were two instability areas in the processing-map which should be avoided during the extrusion. Therefore, in order to obtain the satisfactory properties, the parameters that 1050 °C and 0.01 s-1 were selected in the extrusion.

scholarly journals Plântulas de espécies arbóreas na floresta ciliar do rio Mogi Guaçu, Pirassununga, SP, Brasil

Hoehnea ◽  
2021 ◽  
Vol 48 ◽  
Author(s):  
Israel Henrique Buttner Queiroz ◽  
Ricardo Augusto Gorne Viani ◽  
Renata Sebastiani
Keyword(s):  
River Basin ◽  
Plant Species ◽  
Tree Species ◽  
Riparian Forest ◽  
The State ◽  
Forest Area ◽  
Forest Community ◽  
Adult Individual ◽  
Morphological Aspects ◽  
Forest Remnant

RESUMO The permanence of a plant species in a forest community depends on its number of specimens and its distribution in the various sizes of individuals, including seedlings. Seedlings and seeds from a forest remnant in Pirassununga were collected and analyzed for the degree of threat, possible height of the adult individual, occurrence in phytophysiognomies and region and morphological aspects. 116 seedlings available in 39 morphospecies were collected, and the germination of collected seeds provided 40 species. The present study brought news regarding the morphological aspects, the identification and the distribution of seedlings of tree species in a riparian forest area in the Mogi Guaçu River Basin and in the State of São Paulo.

scholarly journals Community participation in conservation of petungkriyono protected areas in pekalongan district

2020 ◽  
Vol 202 ◽  
pp. 06002
Author(s):  
Marthalia Woelansari ◽  
Maryono Maryono ◽  
Fuad Muhammad ◽  
M. Arief Rahman Halim ◽  
Agus Setyawan
Keyword(s):  
Community Participation ◽  
Economic Value ◽  
Forest Area ◽  
Conservation Areas ◽  
Open Spaces ◽  
Forest Protection ◽  
Descriptive Research ◽  
Protected Forests ◽  
The Government ◽  
Data Collection Technique

The government determines forests based on the main functions of: Conservation forest, protection forest and production forest. The Petungkriyono protected forest is one of the conservation areas located in the Petungkriyono, Pekalongan City. Conservation of protected forests in Petungkriyono is very much needed considering the development of the wider city, so that the forests that were originally forest areas that functioned as green open spaces have been greatly reduced, especially in areas along the river that leads to Pekalongan City. The research method used in this study is to use descriptive research methods. The data collection technique used is the study of literature. Data analysis techniques were performed using a Likert scale calculated by discriminant analysis. Type of participation contributed by the community in the protected forest area of Petungkriyono; a) participation of ideas, b) energy, c) property, d) skill e) social participation. The form of community participation in the conservation of the Petungkriyono protected forest area; a) active participation, b) passive participation. Geographical factors that serve as a reference for the importance of conservation of the Petungkriyono protected forest are: a) habitat, b) consideration of the area, c) physical and human factors, and d) economic value.

scholarly journals Parameters of Pinus sylvestris health condition and Ips acuminatus population in pure and mixed stands of Sumy region

2020 ◽  
pp. 131-140
Author(s):  
Valentyna Meshkova ◽  
Ivan Bobrov
Keyword(s):  
Scots Pine ◽  
Bark Beetles ◽  
Forest Health ◽  
Health Condition ◽  
State Enterprise ◽  
Forest Steppe ◽  
Population Parameters ◽  
Mixed Stands ◽  
Pine Stands ◽  
Scots Pine Stands

Outbreaks of bark beetles have increased in recent years in various regions. Pine engraver beetle (Ips acuminatus (Gyllenhal, 1827); Coleoptera: Curculionidae: Scolytinae) is most common in the pine forests of many European countries. Research on its biology and spread carried out in different natural conditions, phases of pest outbreak and considered various parameters to characterize the population of the pest and forest health condition. The aim of the research was to compare the health condition of Scots pine stands and population parameters of I. acuminatus in its two generations in pure and mixed stands in Polissya and Forest-steppe parts of Sumy region. Research was carried out in 2017 in the pure Scots pine stands and mixed stands with Scots pine and other forest species in Polissya (State Enterprise "Seredyno-Budsky Agroforest Economy"; State Enterprise "Seredyno-Budsky Forest Economy") and Forest-steppe parts (State Enterprise "Velykopysarivske Agroforest Economy"; State Enterprise "Okhtyrske Forest Economy") of Sumy region at 26 sample plots. In sample plots, parameters of forest health condition and bark beetle population were assessed in June and in September, after completion of development of spring and summer generation of I. acuminatus.  By most of the parameters assessed, significant differences between sample plots in Forest-Steppe and Polissya parts of Sumy region were not found. In pure Scots pine stands the mean area of bark beetles’ foci and bark beetles’ production were larger in Forest-steppe in June, and the density of Ips acuminatus nuptial chambers in June and September. In pure Scots pine stands the area of I. acuminatus focus, the number of colonized trees, the proportion of recently died trees, health condition indices, the density of egg galleries and nuptial chambers as well as young beetle’s production increased from June to September. In mixed stands the focus area, the number of colonized trees and health condition index increased insignificantly, and population parameters of I. acuminatus decreased from June to September. Pure Scots pine stands changed the health condition from "severely weakened" to "drying up" in three months, and mixed ones remained in the "weakened" category. In pure pine stands, the density of egg galleries and beetles of the young generation increased for three months from the lower limit of a moderate level to a high level, the density of nuptial chambers – from low to a high level. In mixed stands, all population parameters of I. acuminatus correspond to a low population level. The parameters characterizing the investigated foci of I. acuminatus in the Sumy region significantly correlated with the participation of pine in the stand composition, and in September the correlation is closer than in June. The data obtained indicate the feasibility of creating predominantly mixed pine stands.

scholarly journals The Conflicts of Ultilization of Forest Area in Bukit Basa Limited Production Forest, Rejang Lebong District, Bengkulu Province

2019 ◽  
Vol 17 (1) ◽  
pp. 61
Author(s):  
Gunggung Senoaji
Keyword(s):  
Land Use ◽  
Agricultural Land ◽  
Sampling Technique ◽  
Forest Products ◽  
Forest Area ◽  
Main Function ◽  
Forest Land ◽  
Community Forests ◽  
Crop Land ◽  
Agricultural Business

Bukit Basa Limited Production Forest covers 125 hectares, located in Rejang Lebong District, Bengkulu Province, Indonesia.  The main function of limited production forest is to yield forest products, timber and non timber.  In Bukit Basa Limited Production Forest, there has been a change of land use from forest land to a crop land.  There has been conflict in this forest area. The objective of this study was to describe the characteristics of communities cutivating forest land and to suggest conflict resolution of this forest area. The data were collected by field observation, and interview.  The accidental sampling technique was used to select 42 respondents. Legal approaches were  used to find solutions to the tenurial conflict. The results showed that land use of Bukit Basa Limited Production Forest, in 2017 was entirely crop land. All of this forest areas have been illegaly occupied by people.  The average land area of occupied by a household was 1.24 ha. The people acquired their land by buying (4.76%), renting (21.43%), clearing the forest (42.86%), and inheriting (30.95%). The dependence of this community on the forest area was quite high. Only 38.10% of them had agricultural land outside the forest area; 61.9% depended on the land in the forest area. The contribution of farmers' incomes from agricultural business in forest land was 77.22% of their total income. The legalization of the use of limited production forests as crop lands must be enforced through policy schemes of community-based forest management, such as community forests, village forests, community plantations forest, or partnerships.

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