scholarly journals Estimation of Tree Carbon Stocks in the Green Open Space of the Faculty of Forestry, Tanjungpura University

2021 ◽  
Vol 9 (3) ◽  
pp. 434-443
Author(s):  
Yonatan Ng ◽  
Dwi Astiani ◽  
Hanna Artuti Ekamawanti
Keyword(s):  
Urban Areas ◽  
Open Space ◽  
Ground Level ◽  
Organic Soil ◽  
Allometric Equation ◽  
Vital Role ◽  
Carbon Stocks ◽  
Tree Level ◽  
Open Area ◽  
Inventory Survey

The presence of green open space containing vegetation in urban areas plays a vital role in absorbing and storing carbon in biomass. Tanjungpura University (Untan) Pontianak has a green open area in the New Building of the Faculty of Forestry. This study aimed to describe carbon reserves stored in biomass above ground level (vegetation) in green open areas around the New Building of Faculty of Forestry Untan Pontianak. Data were collected using an inventory survey by non-destructive sampling, which includes recording with fully enumerated data collection on the type and diameter of trees with a continuous line plot system. The data were then analyzed using allometric equations to obtain biomass values. The results found as many as 56 species of trees with a total of 558 individuals dominated by Litsea garciae and Hevea brasiliensis. The results showed the amount of carbon stored at the tree level of 59.06 tons/ha (76.18%), pole level of 13.94 tons/ha (17.99%), and sapling level of 4.52 tons/ha (5.83%), with an average carbon stock of 77.52 tons/ha. Thus, the green open area could store 148.53 tons of carbon in tree biomass. Although it is a small area, this peatland ecosystem could accumulate peat in organic soil and its vegetation and should be managed as peatland forests. Therefore, proper management is essential, and hydrology management is needed mainly due to its nature. Keywords: allometric equation, biomass, carbon stocks, green open space

Keanekaragaman Jenis Tumbuhan di Taman Cerdas Kota Samarinda

2021 ◽  
Vol 23 (1) ◽  
pp. 18-24
Author(s):  
Nur Azizah ◽  
Sri Utami
Keyword(s):  
Population Density ◽  
Environmental Factor ◽  
Air Temperature ◽  
Environmental Quality ◽  
Urban Areas ◽  
Open Space ◽  
High Population Density ◽  
Open Area ◽  
Natural Therapy ◽  
Motorized Vehicles

Urban areas that have a high population density and availability of motorized vehicles required Green Open Space. Green Open Space is an open area in nature that contains vegetation which are necessary to support the ecological system and improve the environmental quality in urban areas. The purpose of this research is to identify the species and abundance of plant in Taman Cerdas Kota Samarinda. The applied method was cruise method by exploring the trails in Taman Cerdas. Every plant that are encountered are noted for the name of species and counted the number from each species. The results showed 21 species of plants consisting of 5 species of trees, 9 species of shrubs and 7 species of herbs included in 19 families with a total number of 3,704 individuals. Plants that are dominant is an ornamentals plants for aesthetic function and serve for natural therapy (healing service). The results of environmental factor measurements are Taman Cerdas located in elevation of 5 mdpl, coordinate S 0° 28' 32", E 117° 09' 01", air temperature: 30° C and humidity: 73%.

Considerations on Ambient Levels of Ozone Concentrations and Relationship with NOx in an Urban Environment

2017 ◽  
Vol 68 (4) ◽  
pp. 824-829
Author(s):  
Cornel Ianache ◽  
Laurentiu Predescu ◽  
Mirela Predescu ◽  
Dumitru Dumitru
Keyword(s):  
Nitrogen Oxides ◽  
Urban Areas ◽  
Road Traffic ◽  
Temporal Distribution ◽  
Ground Level ◽  
Distinct Pattern ◽  
Weekend Effect ◽  
Monitoring Site ◽  
Ground Level Ozone ◽  
Ozone Concentrations

The serious air pollution problem has determined public concerns, worldwide. One of the main challenges for countries all over the world is caused by the elevated levels of ground-level ozone (O3) concentrations and its anthropogenic precursors. Ploiesti city, as one of the major urban area of Romania, is facing the same situation. This research aims to investigate spatial and temporal distribution characteristics of O3 in relationship with nitrogen oxides (NOx) using statistical analysis methods. Hourly O3 and NOx measurements were collected during 2014 year in Ploiesti. The results obtained showed that the ozone spatial distribution was non-normal for each month in 2014. The diurnal cycle of ground-level ozone concentrations showed a mid-day peak, while NOx diurnal variations presented 2 daily peaks, one in the morning (7:00 a.m.) and one in the afternoon (between 5:00 and 7:00 p.m.). In addition, it was observed a distinct pattern of weekly variations for O3 and NOx. Like in many other urban areas, the results indicated the presence of the �ozone weekend effect� in Ploiesti during the 2014 year, ozone concentrations being slightly higher on weekends compared to weekdays. For the same monitoring site, the nitrogen oxides were less prevalent on Saturdays and Sundays, probably due to reducing of road traffic and other pollution-generating activities on weekends than during the week.

scholarly journals Development of a Line Source Dispersion Model for Gaseous Pollutants by Incorporating Wind Shear near the Ground under Stable Atmospheric Conditions

2020 ◽  
Vol 4 (1) ◽  
pp. 17
Author(s):  
Saisantosh Vamshi Harsha Madiraju ◽  
Ashok Kumar
Keyword(s):  
Air Pollution ◽  
Urban Areas ◽  
Wind Shear ◽  
Dispersion Model ◽  
Near Field ◽  
Ground Level ◽  
Gaseous Pollutants ◽  
Air Pollution Control ◽  
Mobile Sources ◽  
Input Variables

Transportation sources are a major contributor to air pollution in urban areas. The role of air quality modeling is vital in the formulation of air pollution control and management strategies. Many models have appeared in the literature to estimate near-field ground level concentrations from mobile sources moving on a highway. However, current models do not account explicitly for the effect of wind shear (magnitude) near the ground while computing the ground level concentrations near highways from mobile sources. This study presents an analytical model based on the solution of the convective-diffusion equation by incorporating the wind shear near the ground for gaseous pollutants. The model input includes emission rate, wind speed, wind direction, turbulence, and terrain features. The dispersion coefficients are based on the near field parameterization. The sensitivity of the model to compute ground level concentrations for different inputs is presented for three different downwind distances. In general, the model shows Type III sensitivity (i.e., the errors in the input will show a corresponding change in the computed ground level concentrations) for most of the input variables. However, the model equations should be re-examined for three input variables (wind velocity at the reference height and two variables related to the vertical spread of the plume) to make sure that that the model is valid for computing ground level concentrations.

scholarly journals A Quantitative Method for Evaluation of Visual Privacy in Residential Environments

Buildings ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 272
Author(s):  
He Zheng ◽  
Bo Wu ◽  
Heyi Wei ◽  
Jinbiao Yan ◽  
Jianfeng Zhu
Keyword(s):  
Urban Areas ◽  
Architectural Design ◽  
Ground Level ◽  
High Density ◽  
Rapid Expansion ◽  
High Rise ◽  
Visual Exposure ◽  
Building Management ◽  
Visual Privacy ◽  
Building Level

With the rapid expansion of high-rise and high-density buildings in urban areas, visual privacy has become one of the major concerns affecting human environmental quality. Evaluation of residents’ visual exposure to outsiders has attracted more attention in the past decades. This paper presents a quantitative indicator; namely, the Potential Visual Exposure Index (PVEI), to assess visual privacy by introducing the damage of potential visual incursion from public spaces and neighborhoods in high-density residences. The method for computing the PVEI mainly consists of three steps: extracting targets and potential observers in a built environment, conducting intervisibility analysis and identifying visible sightlines, and integrating sightlines from building level and ground level to compute the PVEI value of each building opening. To validate the proposed PVEI, a case study with a sample building located at the center of Kowloon, Hong Kong, was evaluated. The results were in accordance with the common-sense notion that lower floors are subjected to poor visual privacy, and privacy is relatively well-preserved in upper floors in a building. However, residents of middle floors may suffer the worst circumstances with respect to visual privacy. The PVEI can be a useful indicator to assess visual privacy and can provide valuable information in architectural design, hotel room selection, and building management.

Wetland Roofs as an Attractive Option for Decentralized Water Management and Air Conditioning Enhancement in Growing Cities—A Review

Water ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1845
Author(s):  
Andreas Zehnsdorf ◽  
Keani C. U. Willebrand ◽  
Ralf Trabitzsch ◽  
Sarah Knechtel ◽  
Michael Blumberg ◽  
...  
Keyword(s):  
Water Management ◽  
Urban Areas ◽  
Ground Level ◽  
Urban Environments ◽  
Positive Side ◽  
Climate Regulation ◽  
Decentralized Treatment ◽  
Attractive Option ◽  
Stormwater Retention ◽  
Positive Side Effects

While constructed wetlands have become established for the decentralized treatment of wastewater and rainwater, wetland roofs have only been built in isolated cases up to now. The historical development of wetland roofs is described here on the basis of a survey of literature and patents, and the increasing interest in this ecotechnology around the world is presented. In particular, this article describes the potential for using wetland roofs and examines experience with applications in decentralized water management in urban environments and for climate regulation in buildings. Wetland roofs are suitable as a green-blue technology for the future—particularly in cities with an acute shortage of unoccupied ground-level sites—for the decentralized treatment of wastewater streams of various origins. Positive “side effects” such as nearly complete stormwater retention and the improvement of climates in buildings and their surroundings, coupled with an increase in biodiversity, make wetland roofs an ideal multi-functional technology for urban areas.

scholarly journals EKSISTENSI RUANG TERBUKA PADA LINGKUNGAN PERMUKIMAN

2019 ◽  
Vol 10 (1) ◽  
pp. 54-58
Author(s):  
Eva Elviana ◽  
Diyan Lesmana
Keyword(s):  
Public Space ◽  
Urban Areas ◽  
Open Space ◽  
Descriptive Analysis ◽  
Public Facility ◽  
Current Development ◽  
Economic Activities ◽  
Joint Activities ◽  
Qualitative Descriptive ◽  
Karo Batak

The housing environment that appears in many urban areas today, is available in the form of real estate and in the form of simple housing. The existence of these houses is equipped with supporting infrastructure. One of them is the availability of open space as a public facility, which can be utilized by all residents of housing. If you look at the historical aspects of past traditional settlements, such as the Tanean Lanjang Madura settlement, the Samin Bojonegoro Community Village, the Sumatra Karo Batak Village, and so on, it is found that there is open space as a public space. Where the function and role of open space are used for joint activities, gathering places and socializing, as well as the center of orientation of several groups of houses, so that the location tends to be in the center. The purpose of this study is to see the existence of open space of traditional settlements (past) and present. As well as analyzing the activities carried out by the pas community and its current development. By using the method of field observation (observation) and qualitative descriptive analysis, the results show that the existence of open space in the present, such as in residential or residential groups, still exists. If in the past traditional settlements, the existence of open spaces was used as a means to gather and socialize, then in its current development, open space could be used as a means of playing and exercising for children, recreational activities (gathering on holidays), supported economic activities (traders who sell), as well as a means of worship (Eid al-Fitr / Eid al-Adha). This shows the development and diversity of functions and activities in the open space, so that its utilization can increase economic values, religious values and other social values.

scholarly journals STUDY ON URBAN RESIDUAL SPACE AS SOLUTIONS REVIEW FOR AREA PROBLEMS

SINERGI ◽  
2021 ◽  
Vol 25 (3) ◽  
pp. 245
Author(s):  
Diana Ayudya ◽  
Mona Anggiani
Keyword(s):  
Urban Areas ◽  
Open Space ◽  
Social Conditions ◽  
Urban Spaces ◽  
Vacant Land ◽  
Study Results ◽  
Spatial Use ◽  
Residual Space ◽  
Density Irregularity ◽  
The City

In cities, spaces were intentionally formed, planned, or unintentionally unplanned. Unlike planned spaces, unplanned spaces in urban areas eventually tend to cause problems for the area. These spaces were referred to as residual spaces, which were generally vacant land or open space in various urban spaces. Urban residual space was also commonly found in tertiary activity centers in big cities like Jakarta, one of which was in the trade and service area of the city. Residual space in such areas grew and developed due to dense activity within the area, resulting building density, irregularity in some spatial use and environmental degradation. Due such conditions, several questions are significant to be raised.  What are the typology, utilization, and its impacts on the area? Did it only cause a problem, or could it be a solution to problems within the area? This study aimed to examine the typology of residual space based on the shape, location, utilization, and impact of trade and service activities in South Jakarta, Kebayoran Lama area. The proposed approach used was a qualitative study of the residual spaces in predetermined trade and commercial areas. The study results of the physical, spatial, visual, and social conditions of urban residual space were explained descriptively to get a picture of the characteristics of the form, location, utilization, and impact on the area.

scholarly journals BUILT ENVIRONMENT: MODELLING THE URBAN SPACE

2019 ◽  
Vol XLII-2/W11 ◽  
pp. 595-600 ◽  
Author(s):  
F. Guzzetti ◽  
K. L. N. Anyabolu ◽  
L. D’Ambrosio ◽  
G. Marchetti
Keyword(s):  
Urban Space ◽  
Urban Areas ◽  
Open Space ◽  
Facility Management ◽  
Complex Environment ◽  
Open Spaces ◽  
Urban Open Space ◽  
Historical Significance ◽  
Green Areas ◽  
Environment Modelling

<p><strong>Abstract.</strong> In urban areas, the “built” is defined by many different elements. Not only buildings but also open spaces containing green areas, viability, urban furniture, underground facilities. While the H-BIM sector focuses, rightly, on buildings of great historical significance, in our case it is been consider a part of the built that it usually not analyse: the urban open space. One of the interesting themes is the possibility of having a single tool that integrates the different objects present in a complex environment such as the urban area. The process with BIM model could allow a huge saving in terms of time and costs considering public tender, maintenance or construction phase of a project. Facility management operating through BIM is another relevant theme considering the whole life of a construction. Finally, another important theme is the connections between elements above the ground (visible elements) and subsoil (not visible elements), not only for the administrations but also if related to the HBIM environment.</p><p>The paper reports the analysis of the experience performed, particularly related to questions about detail and accuracy of the BIM model.</p><p>A methodology for modelling open spaces is been assuming, it is described possible improvements and considerations on the result.</p>

scholarly journals Tangible Cultural Heritage Re-Appropriation Towards A New Urban Centrality. A Critical Crossroad In Semi-Peripheral Eastern Riverside Lisbon

2020 ◽  
Vol 13 (3) ◽  
pp. 139-146
Author(s):  
Joao C. Martins
Keyword(s):  
Cultural Heritage ◽  
Urban Areas ◽  
Urban Regeneration ◽  
Ground Level ◽  
Ground Field ◽  
Public And Private ◽  
Positive Effects ◽  
The Creation ◽  
Tangible Culture ◽  
Private Investors

. The transformation of decayed semi-peripheral riverside areas and its Tangible Culture Heritage is presented today as a contributing factor in urban regeneration by several public preservation bodies and agendas, as well as privately led investment. These practices demand the economic and symbolic valorization of abandoned Tangible Cultural Heritage, where the social coexistence of residents, workers and visitors is seen as a smoother urban integration of these deprived territories and their communities into the surrounding contemporary cities.We’ll focus our approach on socio-spatial changes occurring in Marvila and Beato, presented today as new urban areas in which to financially invest after the 2011 economic crisis occurred in Portugal, discussing public and private re- appropriation of Old Palaces, Convents and Farms and Reconverted Warehouses (industrial and commercial); towards the creation of a new urban centrality in Lisbon. In this case, public ground-field intervention established a culture led regeneration process, with the creation of a municipal library, a crucial point in the cultural use of this space, community participation and gathering. Dealing with private investors, despite the positive effects, such as a reduction in unemployment, economic diversification and re-use of urban voids, there is always the possibility of undesired consequences. This paper argues, and the research experiments in many European cities show us that the ambition to improve the image of these deprived areas, despite somGonzalex encouraging ground level achievements, has unwanted or unexpected outcomes, starting as urban regeneration practices, often sliding towards gentrification, where local public powers have a determinant role.

scholarly journals Application of green concept on mixed-use building design

2021 ◽  
Vol 878 (1) ◽  
pp. 012008
Author(s):  
M D Lubis ◽  
H T Fachrudin ◽  
F A S Lubis ◽  
P W Dari
Keyword(s):  
Water Conservation ◽  
Urban Areas ◽  
Open Space ◽  
Green Building ◽  
Building Design ◽  
Heat Radiation ◽  
Land Use Efficiency ◽  
Mixed Use ◽  
The Right ◽  
Space Requirements

Abstract Green concepts are important things to apply on buildings. The application of the green concept on mixed-use buildings must consider several criteria, one of which is the comfort aspect. The density of commercial buildings in Medan City causes a reduction in green open space, and even many buildings do not comply with the minimum green open space requirements on their buildings, which can support the development of this city to reduce environmental temperatures. The aim of this study is to analyze the green concept that can be applied to mixed-use buildings in urban areas. A mixed-use building design with the application of green building principles is the right choice to reduce the effects of climate. The green building concept can help reduce excess heat radiation inside and outside the building. The method used is qualitative with data collection techniques through observation. The analysis was carried out descriptively to obtain a mixed-use building model with the green building concept. The results show that land use efficiency, energy conservation, materials and water conservation can be applied to provide comfortable on buildings.

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