scholarly journals Analisis Fungsi Jasa Bio-Ekologis Hutan Kota Kawasan Industri

2020 ◽  
Vol 20 (1) ◽  
pp. 1
Author(s):  
Akhmad Syihabuddin ◽  
Budi Darmadi ◽  
Tarsoen Waryono
Keyword(s):  
Urban Forest ◽  
Public Attitudes ◽  
Growth Dynamics ◽  
Urban Forests ◽  
Industrial Area ◽  
Forest Tree ◽  
Climatic Conditions ◽  
Industrial Estates ◽  
Industrial Estate ◽  
Samanea Saman

The construction of green areas in the form of urban forests around the industrial area on the belief Pulogadung role bio-ecological service, functions of various types of plant communities is considered capable of improving the environmental quality of industrial estates. The purposes of study: (1) analyze the dynamics of the urban forest tree growth; (2) analyze the micro-climatic conditions; (3) to analyze the carbon stored amount; (4) analyze the knowledge and attitudes; and (5) urban forest management analyze the industrial area. The study was conducted in Urban forest Industrial Estate Pulogadung, East Jakarta. Samples of vegetation consist of three single swath, while human sample consisted of 40 respondents and two informants. The structure and composition of vegetation that dominates in the Urban forest Industrial Estate Pulogadung Samanea saman for phase trees with IVI 67.68%; Swietenia mahagoni for phase pole with IVI 241.846%; Leucaena leucocephala for phase stake with IVI 126.13%. The growth dynamics of urban forest tree unnatural. Micro-climatic conditions in the category uncomfortable are 29.75, whereas the condition ideally convenient in the range 25.0 - 27.0°C. The amount of carbon stocks in urban forest Industrial Estate Pulogadung of 77.27 tons/ha, while the average carbon density per hectare is 283.3 tons/ha. People's knowledge of the existence of the benefits of urban forests Industrial Estate Pulogadung as a producer of oxygen is greater (97.5%) of the thermostat (90%), and infiltration of rainwater (82.5%), while public attitudes as much as 83.75% agree to participate in managing the urban forest Industrial Estate Pulogadung.

scholarly journals Indonesia Local Industry Structure and Firms Productivity in Industrial Area

2021 ◽  
Vol 10 (1) ◽  
pp. 93-112
Author(s):  
Rinayanti Rinayanti ◽  
Riatu Mariatul Qibthiyyah
Keyword(s):  
Industrial Area ◽  
Industry Structure ◽  
Firm Productivity ◽  
Industrial Firms ◽  
Industrial Estates ◽  
Industrial Estate ◽  
Industry Competition ◽  
Negative Effect ◽  
Structure Indices ◽  
Positive Effect

Using three industry structure indices: specialization, diversification, and competition, we explore how local industry structure may affect firm productivity in the industrial estates. Based on unbalanced panel data of large and medium-sized industrial firms in Indonesia during 2010-2015, our study found that local industry structure influences firm productivity, measured as total factor productivity (TFP). The effect differs between firms outside the industrial estate and firms in the industrial estate. Specialization decreases the productivity of both firms in the industrial estate and outside. Diversification has a positive effect on increasing firm productivity in the industrial estate. As for firms outside the industrial estate, diversification has a negative effect, but the effect is less significant. Meanwhile, local industry competition has a positive and significant effect on firm productivity outside the industrial estate, but the effect is not significant for firms within the industrial estate. Empirically, firms in industrial estates may only benefit from a diversified local industry structure.JEL Classification: D24, L52, R10How to Cite:Rinayanti., & Qibthiyyah, R. M. (2021). Indonesia Local Industry Structure and Firms Productivity in Industrial Area. Signifikan: Jurnal Ilmu Ekonomi, 10(1), 93-112. doi: http://doi.org/10.15408/sjie.v10i1.17197.

scholarly journals A comparative study of tree community structure and natural regeneration status in Bontang urban forest and conservation forest of the LNG Industrial Plant Area, East Kalimantan, Indonesia

2019 ◽  
Vol 20 (10) ◽  
Author(s):  
Sudrajat Sudrajat Sudrajat ◽  
MINTORO DWIPUTRO
Keyword(s):  
Community Structure ◽  
Natural Regeneration ◽  
Urban Forest ◽  
Urban Forests ◽  
Industrial Area ◽  
Industrial Plant ◽  
Tree Level ◽  
East Kalimantan ◽  
Regeneration Status ◽  
Plant Area

Abstract. Sudrajat S, Dwiputro M. 2019. A comparative study of tree community structure and natural regeneration status in Bontang urban forest and conservation forest of the LNG Industrial Plant Area, East Kalimantan, Indonesia. Biodiversitas 20: 2841-2847. The objective of this study was to describe and compare the community structure and natural regeneration status of tree species in urban forests within industrial estates. This study was conducted in two types of forests, Bontang urban forests within industrial area and conservation forests in the Industrial buffer zone area. At each forest location, a transect was made, and along the transect, a plot of size 20 x 20 meters was made with a distance between plots of 100 meters. In each plot, several subplots were made with size of 5m x 5m for sapling level, and 2m x 2m for seedling level. The results of this study showed that in urban forest areas there were 32 tree-level species, 21 sapling species and 15 seedling species, belonging of 49 genera and 39 families. The number of species, species richness, species diversity, evenness of sapling and tree-level species was more in urban forests than in conservation forest, and the condition was vice versa for seedling level. The value of species dominance index in conservation forest was greater than urban forest, and conversely, the value of individual density/ha for tree-level was 562.50 individuals/ha, sapling level was 7,933 ind./Ha and for seeding level 80,625 ind./ha. Of the 53 urban forest species, 28 species (52.83%) were in no regeneration category, 3 species (5.66%) were in poor regeneration category, and 22 species (41.50%) were in the new species category. In contrast, among 76 species of the conservation forests, 8 species (10.52%) showed good regeneration status, 13 species (17.10%) showed poor status and 55 species (72.36%) showed no regeneration status. From the results, it can be concluded that the Bontang urban forest in the industrial area shows no regeneration status and the emergence of new species. In the context of conservation, it is recommended to implement special silvicultural techniques to maintain the biodiversity of this urban forest.

scholarly journals Quantifying Tree Cover Loss in Urban Forests within Nairobi City Metropolitan Area from Earth Observation Data

2020 ◽  
Vol 3 (1) ◽  
pp. 78
Author(s):  
Francis Oloo ◽  
Godwin Murithi ◽  
Charlynne Jepkosgei
Keyword(s):  
Land Cover ◽  
Metropolitan Area ◽  
Land Surface ◽  
Urban Forest ◽  
Urban Forests ◽  
Earth Observation ◽  
Tree Cover ◽  
Observation Data ◽  
Vegetation Health ◽  
Earth Observation Data

Urban forests contribute significantly to the ecological integrity of urban areas and the quality of life of urban dwellers through air quality control, energy conservation, improving urban hydrology, and regulation of land surface temperatures (LST). However, urban forests are under threat due to human activities, natural calamities, and bioinvasion continually decimating forest cover. Few studies have used fine-scaled Earth observation data to understand the dynamics of tree cover loss in urban forests and the sustainability of such forests in the face of increasing urban population. The aim of this work was to quantify the spatial and temporal changes in urban forest characteristics and to assess the potential drivers of such changes. We used data on tree cover, normalized difference vegetation index (NDVI), and land cover change to quantify tree cover loss and changes in vegetation health in urban forests within the Nairobi metropolitan area in Kenya. We also used land cover data to visualize the potential link between tree cover loss and changes in land use characteristics. From approximately 6600 hectares (ha) of forest land, 720 ha have been lost between 2000 and 2019, representing about 11% loss in 20 years. In six of the urban forests, the trend of loss was positive, indicating a continuing disturbance of urban forests around Nairobi. Conversely, there was a negative trend in the annual mean NDVI values for each of the forests, indicating a potential deterioration of the vegetation health in the forests. A preliminary, visual inspection of high-resolution imagery in sample areas of tree cover loss showed that the main drivers of loss are the conversion of forest lands to residential areas and farmlands, implementation of big infrastructure projects that pass through the forests, and extraction of timber and other resources to support urban developments. The outcome of this study reveals the value of Earth observation data in monitoring urban forest resources.

scholarly journals Assessing the Ecological Value of an Urban Forest Park: A Case Study of Sinhua Forest Park in Taiwan

Forests ◽  
2021 ◽  
Vol 12 (6) ◽  
pp. 806
Author(s):  
Wan-Yu Liu ◽  
Yo-Zheng Lin ◽  
Chi-Ming Hsieh
Keyword(s):  
Urban Forest ◽  
Contingent Valuation Method ◽  
Urban Forests ◽  
Green Spaces ◽  
Socioeconomic Background ◽  
Tobit Regression ◽  
Ecological Value ◽  
Forest Park ◽  
Study Results ◽  
Ecological Conservation

Urban forests offer multiple functions: they can balance negative effects from the environment and provide the public with a place for leisure and recreation. Hence, urban forests are crucial to urban ecology and have been widely studied. In addition, relevant study results were applied for policymaking in urban development and forest park management. This study evaluated the ecological value of the Sinhua Forest Park and examined whether the socioeconomic background of participants influences their willingness to pay (WTP) for ecological conservation. Questionnaires were distributed to visitors in the Sinhua Forest Park in Tainan, Taiwan, and the payment card format of the contingent valuation method was employed to evaluate the ecological value. The results showed that the visitors had an annual WTP of $22.01 per person. However, when samples with protest responses were excluded, the WTP rose to $24.58. By considering the total number of visitors of a year, the total ecological value was $1,426,964.14/year and reached $1,593,257.31/year after excluding the protest samples. This study also analyzed participants’ within-variable socioeconomic background (e.g., gender and education) and discovered that male participants who are aged 60 years or older, with an education level of senior/vocational high school, and those who visited green spaces two to three times per week presented a high WTP score on average. A Tobit regression model was employed for examination, and the results indicated that participants’ education and frequency of visiting green spaces significantly influenced their WTP for the ecological conservation of the Sinhua Forest Park.

scholarly journals Effects of Urban Forest Types and Traits on Soil Organic Carbon Stock in Beijing

Forests ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 394
Author(s):  
Xinhui Xu ◽  
Zhenkai Sun ◽  
Zezhou Hao ◽  
Qi Bian ◽  
Kaiyue Wei ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Stock ◽  
Urban Forest ◽  
Coniferous Forest ◽  
Predictor Variable ◽  
Urban Forests ◽  
Least Squares Regression ◽  
Forest Types ◽  
Organic Carbon Stock

Forests can affect soil organic carbon (SOC) quality and distribution through forest types and traits. However, much less is known about the influence of urban forests on SOC, especially in the effects of different forest types, such as coniferous and broadleaved forests. Our objectives were to assess the effects of urban forest types on the variability of SOC content (SOC concentration (SOCC) and SOC density (SOCD)) and determine the key forest traits influencing SOC. Data from 168 urban forest plots of coniferous or broadleaved forests located in the Beijing urban area were used to predict the effects of forest types and traits on SOC in three different soil layers, 0–10 cm, 10–20 cm, and 20–30 cm. The analysis of variance and multiple comparisons were used to test the differences in SOC between forest types or layers. Partial least squares regression (PLSR) was used to explain the influence of forest traits on SOC and select the significant predictors. Our results showed that in urban forests, the SOCC and SOCD values of the coniferous forest group were both significantly higher than those of the broadleaved group. The SOCC of the surface soil was significantly higher than those of the following two deep layers. In PLSR models, 42.07% of the SOCC variance and 35.83% of the SOCD variance were explained by forest traits. Diameter at breast height was selected as the best predictor variable by comparing variable importance in projection (VIP) scores in the models. The results suggest that forest types and traits could be used as an optional approach to assess the organic carbon stock in urban forest soils. This study found substantial effects of urban forest types and traits on soil organic carbon sequestration, which provides important data support for urban forest planning and management.

scholarly journals Beijing Resident’s Preferences of Ecosystem Services of Urban Forests

Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 14
Author(s):  
Han Zhi-Ying ◽  
Youn Yeo-Chang
Keyword(s):  
Ecosystem Services ◽  
Air Quality ◽  
Fresh Water ◽  
Urban Forest ◽  
Urban Forestry ◽  
Urban Forests ◽  
Wildlife Habitat ◽  
Quality Regulation ◽  
Water Provision ◽  
Air Quality Regulation

This paper aims to investigate the Beijing resident’s preferences over various options of urban forest management strategies. The literature investigation and expert Delphi method were conducted to classify the ecosystem services of urban forests into six categories: (1) fresh water provision, (2) noise reduction, (3) moderation of extreme events, (4) air quality regulation, (5) species diversity and wildlife habitat, and (6) recreation and spiritual experience. To elicit the relative preferences to ecosystem service (hereafter referred to as ES) of Beijing residents, we employed the choice experiment method. The data were collected by interviews with questionnaires conducted in October 2017, and a total of 483 valid questionnaires were analyzed. The subjects of this experiment were residents older than 19 years old who have lived in Beijing for more than 1 year and have visited any one of the urban forests located in Beijing more than once during 2016. The results were as follows: Firstly, the air quality regulation ES was considered as the most important service for Beijing residents in terms of their choices of urban forest. In addition, Beijing residents regarded the fresh water provision ES as the second most important ES. Beijing residents were willing to pay up to 1.84% of the average monthly income of Chinese households annually to expand urban forest ecosystems in order to improve air quality. Secondly, apartment owners were willing to pay more municipality tax for forest ESs than residents who did not own an apartment. Thirdly, residents were more willing to pay for urban forest ESs as their income increases. The results indicated that Beijing residents were willing to pay more tax in support of urban forestry for air quality improvement. This research suggests that urban environmental policy makers in Beijing should pay more attention to the regulation function of forests (especially improving air quality) when designing and managing urban forests.

scholarly journals Spatio-Temporal Changes of Urban Forests and Planning Evolution in a Highly Dynamical Urban Area: The Case Study of Wrocław, Poland

Forests ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 17 ◽  
Author(s):  
Justyna Jaworek-Jakubska ◽  
Maciej Filipiak ◽  
Adam Michalski ◽  
Anna Napierała-Filipiak
Keyword(s):  
World War Ii ◽  
Urban Forest ◽  
Urban Forests ◽  
Spatial Dimension ◽  
Temporal Changes ◽  
City Centre ◽  
Socialist Economy ◽  
Urban Green Spaces ◽  
Spatio Temporal ◽  
The City

Knowledge about urban forests in Poland is still limited, as it is primarily based on aggregate, formal data relating to the general area, ignoring the spatial dimension and informal green areas. This article describes and analyses spatio-temporal changes in the actual urban forest resources in Wrocław in 1944–2017, which covers the first period of the city’s rebuilding after its destruction during World War II and its development during the nationalised, centrally-planned socialist economy, as well as the second period of intensive and only partly controlled growth under conditions of market economy. The study is based on current and historical orthophotomaps, which were confronted with cartographic data, as well as planning documents. We found that between 1944 and 2017, the percentage contribution of informal woodlands increased tenfold (from 0.5 to 4.9% of the present total area of the city). The area occupied by such forests has grown particularly during the most recent years of the city’s intensive development. However, the forests have been increasingly fragmented. During the first period, new forest areas were also created in the immediate vicinity of the city centre, while during the second one, only in its peripheral sections. The post-war plans regarding the urban green spaces (UGS), including the current plan, are very conservative in nature. On the one hand, this means no interference with the oldest, biggest, and most valuable forest complexes, but on the other hand, insufficient consideration of the intensive built-up area expansion on former agriculture areas. Only to a limited extent did the above-mentioned plans take into account the informal woodlands, which provide an opportunity for strengthening the functional connectivity of landscape.

Growth and development of Hippophae rhamnoides L. introduced in Absheron

2020 ◽  
Vol 02 (03) ◽  
pp. 35-38
Author(s):  
Kamala Arastun Sadigov ◽  
Keyword(s):  
Root System ◽  
System Development ◽  
Growth Dynamics ◽  
Climatic Conditions ◽  
Hippophae Rhamnoides ◽  
Seedling Morphology ◽  
Hippophaë Rhamnoides ◽  
Root System Development ◽  
Hippophae Rhamnoïdes L ◽  
Seed Propagation

The presented article provides seed propagation, seedling morphology and growth dynamics, root system development in connection with the introduction of Hippophae rhamnoides L. species found in our natural flora in Absheron. The study found that the species Hippophae rhamnoides L. is well adapted to the soil and climatic conditions of Absheron and can be grown in cultural conditions. Key words: Hippophae rhamnoides L., introdiction, seed, repoduction, morphology, dewelopment, root system

scholarly journals New Silvicultural Treatments for Conifer Peri-Urban Forests Having Broadleaves in the Understory - The First Application in the Peri-Urban of Xanthi in Northeastern Greece

2019 ◽  
Vol 10 (2) ◽  
pp. 107-116 ◽  
Author(s):  
Elias Milios ◽  
Kyriaki Kitikidou ◽  
Kalliopi Radoglou
Keyword(s):  
Urban Forest ◽  
Urban Forests ◽  
Basal Area ◽  
Conifer Forests ◽  
Research Hypothesis ◽  
Silvicultural Treatments ◽  
Dead Trees ◽  
Selective Approach ◽  
Conifer Trees ◽  
Cutting Intensity

Background and Purpose: In Greece, forest practice did not develop special silvicultural treatments for planted conifer peri-urban forests where broadleaf trees appear as natural regeneration in the understory. The aims of this study are: a) to analyze the new proposed selective silvicultural treatments for the planted peri-urban forest of Xanthi and for analogous planted conifer forests, where broadleaf trees are naturally established in the understory b) to check the research hypothesis that the new selective silvicultural treatments exhibited higher intensity in terms of the basal area of cut trees, compared to that of traditional treatments in the studied peri-urban forest. Materials and Methods: In the traditional treatments, in the pine overstory cuttings, apart from the dead trees, mainly the malformed, damaged, suppressed and intermediate trees were cut. In the lower stories, the goal of the thinning was the more or less uniform distribution of broadleaf trees. In the proposed selective treatments, the main aim of pine cuttings is to release the broadleaf formations growing in the lower stories, while the treatments of the broadleaf trees will be a form of “positive selection” thinning. Plots were established in areas where the two types of treatments were going to be applied. In each plot, tree measurements and a classification of living trees into crown classes took place. After the application of the treatments the characteristics of cut trees were recorded. Results: In the established plots, before the cuttings (and thinning), total basal area was not statistically significantly different between the two types of treatments. In selective treatments, the basal area of all cut trees was statistically significantly higher than that of the results of traditional treatments. In the broadleaf cut trees there were statistical differences in the ratios of dominant, intermediate and suppressed trees between the two silvicultural approaches. Conclusions: The research hypothesis was verified. The intensity of treatments in terms of the basal area of cut trees was higher in the selective approach, compared to the traditional treatments in the Xanthi peri-urban forest. However, the overstory cutting intensity of the selective treatments depends on the spatial distributions and densities of broadleaved and conifer trees. In the broadleaf trees, the different objectives of the two types of treatments resulted in thinning with different qualitative characteristics. The proposed silvicultural treatments will accelerate the conversion of peri-urban conifer forests having an understory of broadleaf trees into broadleaved forests, or into mixed forests of conifers and broadleaf trees.

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