scholarly journals PREDIKSI REDAMAN GELOMBANG MENGGUNAKAN RANCANGAN DRAG TEKANAN GREEN BELT MANGROVE (GBM) PADA PERSAMAAN AIR DANGKAL (PAD)-DASAR LAUT RATA (DLR) DENGAN PENDEKATAN NUMERIK

2018 ◽  
Vol 17 (2) ◽  
pp. 101
Author(s):  
F. A. S. SUDARMOYO ◽  
S. NURDIATI ◽  
A. SOPAHELUWAKAN
Keyword(s):  
Green Belt

Berbagai fenomena alam yang banyak terkait dengan gelombang, di antaranya adalah bunyi, cahaya, pergerakan air laut, aliran sungai, riak pada air kolam, dan contoh-contoh lain yang banyak terjadi dalam kehidupan sehari-hari. Salah satu jenis gelombang yang banyak dikaji adalah gelombang tsunami, yang mana gelombang tsunami ini memiliki periode gelombang yang sangat besar dan gelombangnya tidak mudah hilang ataupun tereduksi. Gelombang tsunami dapat menghantam pantai dengan energi yang sangat besar sehingga mengakibatkan area sekitar pantai mengalami kerusakan yang sangat luas. Salah satu upaya untuk meredam gelombang adalah dengan adanya keberadaan hutan mangrove yang berfungsi meminimalisir kerusakan pantai.<br />Dalam penelitian ini, upaya untuk memprediksi redaman gelombang dilakukan dengan merancang drag tekanan Green Belt Mangrove (GBM) pada Persamaan Air Dangkal (PAD) untuk kasus Dasar Laut Rata (DLR). Persamaan yang merepresentasikan gelombang diterapkan melalui PAD untuk kasus DLR (PAD-DLR), sedangkan redaman gelombang dibangun melalui PAD-DLR dengan menerapkan drag tekanan fluida pada GBM yang tergantung pada koefisien drag dan luas GBM, dinamakan PAD-GBM-DLR. Solusi numerik PAD-DLR dan PAD-GBM-DLR diselesaikan dengan menggunakan Metode Beda Hingga. Adapun simulasi yang dilakukan guna menggambarkan perilaku gelombang dari solusi numerik PAD-DLR dan PAD-GBM-DLR. Pada penelitian ini telah diperoleh hasil prediksi redaman gelombang terhadap GBM melalui simulasi PAD-GBM-DLR. Berdasarkan hasil analisis pada simulasi yang telah dilakukan, Redaman Amplitudo Gelombang (RAG) dan Redaman Kecepatan Gelombang (RKG) terbesar diberikan pada kondisi IV yang memiliki nilai luas GBM 𝐴 = 22 dan koefisien drag GBM 𝐶𝐷 = 0.95 yaitu 93 % dan 32 %. Oleh sebab itu, semakin banyak dan besar nilai luasan GBM (𝐴) serta semakin kecil nilai koefisen drag GBM (𝐶𝐷) yang diberikan, maka redaman gelombang semakin membesar, begitupun sebaliknya.

scholarly journals The Productive Landscape in the Desert Margin for the Sustainable Development of Rural Settlements: An Innovative Greenbelt for Maranjab Desert in Iran

2021 ◽  
Vol 13 (4) ◽  
pp. 2077
Author(s):  
Mahnaz Sarlak ◽  
Laura Valeria Ferretti ◽  
Rita Biasi
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Low Cost ◽  
Agricultural Systems ◽  
Rural Settlements ◽  
Green Belt ◽  
The Sustainable Development ◽  
Research Questions ◽  
New Form ◽  
Low Levels

About two billion rural individuals depend on agricultural systems associated with a high amount of risk and low levels of yield in the drylands of Asia, Africa, and Latin America. Human activities, climate change and natural extreme events are the most important drivers of desertification. This phenomenon has occurred in many regions of Iran, particularly in the villages in the periphery of the central desert of Iran, and has made living in the oases so difficult that the number of abandoned villages is increasing every year. Land abandonment and land-use change increase the risk of desertification. This study aims to respond to the research questions: (i) does the planning of green infrastructures on the desert margin affect the distribution and balance of the population? (ii) how should the green belt be designed to have the greatest impact on counteracting desertification?, and (iii) does the design of productive landscape provide the solution? Through a wide-ranging and comprehensive approach, this study develops different scenarios for designing a new form of green belt in order to sustainably manage the issues of environmental protection, agricultural tradition preservation and desertification counteraction. This study proposes a new-traditional greenbelt including small low-cost and low-tech projects adapted to rural scale.

scholarly journals ASSESSMENT OF AMBIENT AIR QUALITY AND DEVELOPMENT OF GREEN BELT AROUND INDUSTRIES IN ASSAM USING SELECTIVE TREE AND PLANT SPECIES

2020 ◽  
pp. 610-613
Author(s):  
Jiban Jyoti Das
Keyword(s):  
Air Pollution ◽  
Air Quality ◽  
Plant Species ◽  
Ambient Air ◽  
Tolerance Index ◽  
Ambient Air Quality ◽  
Sensitive Species ◽  
Green Belt ◽  
Pollution Tolerance ◽  
Air Pollution Tolerance Index

Industrialization is an important aspect of a growing economy. However, rapid industrialization has caused many serious impacts on the environment. One such impact is the deteriorating air quality, especially around industries. It is said that afforestation is the best and simplest way for improving the air quality. Also, trees and plants have been increasingly used as filters for dust particles around the home, traffic roads, etc. In scientific studies, it has also been found that trees and plant leaves can be used to assess the ambient air quality by an index called the Air pollution tolerance index. A literature search has been done on the scientific database like Sciencedirect and Researchgate to review the existing knowledge of Air pollution tolerance index and to find the tolerant and sensitive species based on it so that these species can be selectively planted to assess the ambient air quality and also to develop a better green belt around refineries and industries in Assam. The study has reviewed the linkage of the impact of air pollution on leaves of plants and trees through scientific evidence. Through such scientific reviews, the most tolerant species of trees and plants were chosen with the condition that it can grow under the climatic condition of Assam. The recommendation and suggestions of tolerant tree and plant species can be used for specific species plantations for developing green belts around refineries and industries in Assam. The recommendation of sensitive species can be used for monitoring ambient air quality with reference to other standard procedures. KEYWORDS: Air pollution tolerance index, Industries, Air- pollution, Green belt

scholarly journals Transformasi Makna dan Fungsi Ruang di RPTRA Kalijodo dalam Pergulatan Citra Kota Jakarta

2018 ◽  
Vol 16 (2) ◽  
pp. 13-27
Author(s):  
Eka Permanasari ◽  
◽  
Thomas Lientino ◽  
Keyword(s):  
Everyday Life ◽  
Human Trafficking ◽  
Community Center ◽  
Highway Bridge ◽  
City Image ◽  
Top Down ◽  
Green Belt ◽  
The Everyday ◽  
The Relationship ◽  
The City

Kalijodo has a long history in terms of gambling, prostitution, human trafficking and other illicit activities. Although it is a green belt area, the location had always being filled with semipermanent buildings. The area was changed its meaning in 2016 when the late Governor of Ahok with the help of the police and army, eradicated these housing and transformed this place as the community center (RPTRA-Ruang Publik Terpadu Ramah Anak). Together with Yori Antar, Basuki changed Kalijodo into a new center for Jakarta with its mural and skatepark. Former illicit users have been pushed out from the site. Some built a temporary shelter under the highway bridge while others went to their villages. After the fall of Basuki due to the blasphemy crime, the image of RPTRA Kalijodo was contested. Within a day, the area was filled with illegal parking and prostitution returned in different forms taking place under the highway bridge. Layers of meaning and use of Kalijodo transforms rapidly and in results changes the image of the city. Through observation, interviews and archival research, this paper analyses the contestation of the city image by investigating the relationship between the top-down approach and the everyday life uses of space.

scholarly journals Repurposing the Green Belt in the 21st Century

2020 ◽  
Author(s):  
Peter Bishopw ◽  
Alona Perez Martinez ◽  
Rob Rogemma ◽  
Lesley Williams
Keyword(s):  
21St Century ◽  
Green Belt
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