scholarly journals PEMILIHAN JENIS POHON MENJERAP DEBU DI MEDIAN JALAN KOTA BANDAR LAMPUNG

2019 ◽  
Vol 2 (2) ◽  
pp. 134
Author(s):  
Suci Rahmadhani ◽  
Slamet Budi Yuwono ◽  
Agus Setiawan ◽  
Irwan Sukri Banuwa
Keyword(s):  
Air Pollution ◽  
Sampling Method ◽  
Gravimetric Method ◽  
High Ability ◽  
The Road ◽  
Mimusops Elengi ◽  
Swietenia Mahagoni ◽  
Dust Absorption ◽  
Research Show

Trees species are suitable to be planted in the median of the road must be able to absorb and to reduce air pollution. Determination of leaf samples was carried out using the purposive sampling method. The measurement of dust was carried out using a laboratory experimental method, namely the gravimetric method. The results of the research show that the trees that have the greatest dust absorption ability on tanjung (Mimusops elengi) are 0.00123 gr/cm2 and trees that have the ability to lie falsely with mahogany (Swietenia mahagoni) are 0.00022 gr/cm2. Tanjung tree is a plant that has a high ability to absorb dust, has smooth, shiny leaves, curved leaves and curved upward, and fragrant flowers. Tanjung tree is the most effective tree planted in the median road for dust absorption. Tanjung trees are recommended to be planted in the median road so that dust in the air is reduced.

scholarly journals Traffic effects on leaf macro- and micro-morphological traits

2018 ◽  
Vol 45 (2) ◽  
pp. 92-101
Author(s):  
Masoomeh Allahnouri ◽  
Farhad Ghasemi Aghbash ◽  
Iman Pazhouhan
Keyword(s):  
Air Pollution ◽  
Discriminant Analysis ◽  
Environmental Conditions ◽  
Morphological Traits ◽  
Epidermal Cells ◽  
Morus Alba ◽  
The Road ◽  
Individual Trees ◽  
Research Show

AbstractThe aim of this study was to evaluate the traffic-related effects on morphological and anatomical traits of Fraxinus rotundifolia and Morus alba along the Malayer-Hamedan road. In the study area, populations of two species of F. rotundifolia (30 individual trees) and M. alba (30 individual trees) were selected for sampling. The results showed that the leaf and stomata dimensions at distances near to the roadside were significantly lower compared to longer distances from the road. For F. rotundifolia, the number of veins showed the lowest plasticity, while in case of M. alba, the stomata length (P = 0.52) and the number of veins (P = 0.54) showed the lowest plasticity related to the environmental conditions. Results of discriminant analysis for population grouping for the two species of F. rotundifolia and M. alba confirmed the accuracy of grouping 74.8% and 79.5%, respectively. In case of trees that were farther away from the road, guard and epidermal cells were located at the same level. We found that the leaf stomata in M. alba were closed more than in F. rotundifolia at the same distance. Totally, the results of this research show that the air pollution stress impacted the tree morphological traits. From the two species, F. rotundifolia was more resistant in terms of pollution stress.

scholarly journals Kajian Hidrostratigrafi Bentanglahan Kepesisiran Tipologi Marine Deposition Coast Kecamatan Ngambur Provinsi Lampung

2021 ◽  
Vol 2 (1) ◽  
pp. 11-24
Author(s):  
Evi mivtahul Khoirullah ◽  
I.g.L. Setyawan Purnama ◽  
Margaretha Widyastuti
Keyword(s):  
Coastal Area ◽  
Sampling Method ◽  
Sandy Beach ◽  
Research Area ◽  
Soil Resistivity ◽  
Fresh Groundwater ◽  
Constituent Material ◽  
Measurement Results ◽  
Research Show

This research was conducted on coastal area located in Ngambur Subdistrict, Pesisir Barat Regency, Lampung Province. Geomorphologically, typology of this coastal area formed of marine deposition coast. Which is consist of sandy beach (M1), beach ridge (M2), and fluviomarine (Fm). The purpose of this reasearch is to reconstruct and analyze charactreistic of hydrostratigraphy which is includes of soil stratigraphy system and properties, and physical properties of groundwater in the research area. Vertical distribution of soil resistivity obtained by measuring 24 of measuring points with depth of penetration’s up to 150 meters. Determination of measurement points are selected using purposive sampling method. Furthermore, the resistivity value of the measurement results is calculated using IP2Win software. Results of the calculation matched with soil resistivity tables. Results of the research show that vertically the type of aquifers identified are aquifer, aquitard, and aquifug. The constituent material is dominated by alluvium containing fresh groundwater which acts as an aquifer and sandstone materials which acts as aquitard. The electrical conductivity value (DHL) measured <1,200mmhos / cm which indicates that the groundwater in ths area is classified as fresh groundwater.

scholarly journals DETERMINATION OF ADDITIONAL HEALTH RISK DUE TO POLLUTANTS IN AMBIENT AIR DURING OPERATION OF ROAD-VEHICLES COMPLEX

2018 ◽  
Vol 97 (12) ◽  
pp. 1171-1178 ◽  
Author(s):  
Yu. A. Rakhmanin ◽  
A. V. Levanchuk ◽  
Olga I. Kopytenkova ◽  
N. M. Frolova ◽  
A. M. Sazonova
Keyword(s):  
Air Pollution ◽  
Health Risk ◽  
Population Health ◽  
Air Pollutants ◽  
Ambient Air ◽  
Residential Areas ◽  
Road Vehicles ◽  
The Road ◽  
Road Pavement

Introduction. According to the materials of the World Health Organization, air pollutants are one of the most significant factors affecting the health of the population. The main urban air pollution source is road transport. The determination of air pollutants amount during the operation of the road-vehicles complex (RVC) with suspended substances is an important procedure for monitoring the risk to human health, planning, and evaluation of measures for the protection of residential areas ambient air. The existing methodical documents and regulations do not fully regulate important aspects of air pollution monitoring and assessment by-products caused by exhaust gases of the vehicle and emissions associated with the operation of the RVC. Thus, the purpose of this study is to determine the additional population health risks due to pollutants reaching the air of residential areas during the RVC operation. Material and methods. The method of emissions measurement reaching the air during the operation of the RVC is based on existing methodical documents and regulations. To assess the pollution, the data of observations of the intensity of traffic flow in different time periods in the experimental territories are used. The calculation of pollutants amount released into the air during the operational wear of the RVC is determined separately for the tire treads, brake system, and road pavement. Results. Guided by the constructed nomogram, taking into account distribution zone of the air pollution, it is possible to determine population health risk during the RVC operation in the city based on the calculation of the hazard coefficient. Discussion. On the basis of the calculations, data on the number of pollutants reaching the air during the RVC operation (wear of tire treads, brake system, road pavement) and from vehicles of various types for 1 year are presented. The data on the pollutants quantities generating on the road on a per 1 km car run basis, reaching the ambient air for various periods of time (hours, days) with the aim of the derivation of the spatial-temporal characteristics of the pollutants. On the basis of the obtained data, approximate calculations of the number of pollutants reaching the air during the operation of the RVC from all vehicles registered by St. Petersburg traffic police at the moment and the forecast for the period 2020 were carried out. Сonclusions. The given data on the hazard coefficient calculation of suspended solids emissions of RVC allow summarizing the risk from all the compartmental RVC sources. On the basis of the distance from the road to residential buildings presented in the nomogram, it is possible to determine an additional population health risk due to pollutants reaching the air during the RVC operation using a mathematical model of dispersion.

scholarly journals Keanekaragaman Jenis Lichen di Kota Semarang

Life Science ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 10-16 ◽  
Author(s):  
Husna Mafaza ◽  
Murningsih Murningsih ◽  
Jumari Jumari
Keyword(s):  
Air Pollution ◽  
Random Sampling ◽  
Sampling Method ◽  
Diversity Index ◽  
Morphological Structure ◽  
Shade Trees ◽  
Wiener Diversity Index ◽  
Number Of Individuals ◽  
The City ◽  
Swietenia Mahagoni

Lichen is often used as a bioindicator of air pollution in an area because it is sensitive to pollution. The morphological structure of lichen that does not have a cuticle, stomata, and absorptive organ, forces lichens to survive under the stress of pollutants found in the air. The sensitivity of lichen to air pollution can be seen through changes in diversity. The purpose of this study was to examine the diversity of species of lichens, to assess the environmental conditions and shade trees as habitat for lichens in the city of Semarang. The research was conducted from October to November 2017 using the purposive random sampling method. Sampling was conducted at three research stations, namely: Mangkang Terminal, Simpang Lima Area, and Undalang Tembalang Campus. Based on the results of research at the three observation stations, 18 lichen species were obtained, 13 species were identified and 5 species were not identified. Lichen obtained as many as 8 families, namely Arthoniaceae, Caloplacaceae, Physciaceae, Graphidaceae, Lecanoraceae, Lecidellaceae, Leprariaceae and Parmeliaceae. These types of lichen belong to the talus group foliose and crustose. The shade tree that is most overgrown with lichens is mahogany (Swietenia mahagoni). The Shannon-Wiener diversity index values in the three research stations were: Terminal Mangkang (1.88), Simpang Lima Region (2.95), and Undip Tembalang Campus (3.71). The highest number of species and number of individuals is at the Undip Tembalang Campus, with a total of 17 species and 295 individuals lichen. Dirinaria spp. is the most found species in all three research stations.   Lichen sering dipakai sebagai bioindikator pencemaran udara di suatu daerah karena sifatnya yang sensitif terhadap polusi. Struktur morfologi lichen yang tidak memiliki lapisan kutikula, stomata, dan organ absorptif, memaksa lichen untuk bertahan hidup di bawah cekaman polutan yang terdapat di udara. Sensitivitas lichen terhadap pencemaran udara dapat dilihat melalui perubahan keanekaragamannya. Tujuan dari penelitian ini adalah untuk mengkaji keanekaragaman jenis lichen, mengkaji kondisi lingkungan dan pohon peneduh sebagai habitat lichen di Kota Semarang. Penelitian dilaksanakan pada bulan Oktober hingga November 2017 menggunakan metode purposive random sampling. Sampling dilakukan di tiga stasiun penelitian, yakni: Terminal Mangkang, Kawasan Simpang Lima, dan Kampus Undip Tembalang. Berdasarkan hasil penelitian di ketiga stasiun pengamatan, diperoleh 18 spesies lichen, 13 spesies berhasil diidentifikasi dan 5 spesies belum teridentifikasi. Lichen yang diperoleh sebanyak 8 famili yakni Arthoniaceae, Caloplacaceae, Physciaceae, Graphidaceae, Lecanoraceae, Lecidellaceae, Leprariaceae dan Parmeliaceae. Jenis lichen tersebut termasuk dalam kelompok talus foliose dan crustose. Pohon peneduh yang paling banyak ditumbuhi lichen adalah mahoni (Swietenia mahagoni). Nilai indeks keanekaragaman Shannon-Wiener di ketiga stasiun penelitian yaitu: Terminal Mangkang (1,88), Kawasan Simpang Lima (2,95), dan Kampus Undip Tembalang (3,71). Jumlah jenis dan jumlah individu tertinggi terdapat di Kampus Undip Tembalang, dengan total 17 spesies dan 295 individu lichen. Dirinaria spp. merupakan spesies yang paling banyak ditemukan di ketiga stasiun penelitian.

scholarly journals Evaluation of plant species diversity in the road dividers of Dhaka City

2021 ◽  
Vol 28 (1) ◽  
pp. 141-154
Author(s):  
Mohammad Zashim Uddin ◽  
Abulais Shomrat ◽  
Md Siddiq Hasan ◽  
Md Robin Khan ◽  
Abdur Rahman Fahad ◽  
...  
Keyword(s):  
Species Diversity ◽  
Plant Species ◽  
Leucaena Leucocephala ◽  
Plant Species Diversity ◽  
Dhaka City ◽  
The Road ◽  
Tabernaemontana Divaricata ◽  
Mimusops Elengi ◽  
Polyalthia Longifolia ◽  
Swietenia Mahagoni

The present study aims to evaluate the present status of plant species diversity in the road dividers of Dhaka city. A total of 90 plant species under 73 genera and 42 families have been recorded from the road dividers of Dhaka city. Analysis showed that among the 90 species, the most abundant plant species in the road divider are Mimusops elengi (Bakul) Polyalthia longifolia (Debdaru), Leucaena leucocephala (Epil-epil), Tabernaemontana divaricata (Togor) and Swietenia mahagoni (Mahagoni). In case of dominant analysis based important value index showed that Mimusops elengi is the top dominant plant species followed by Polyalthia longifolia, Leucaena leucocephala, Tabernaemontana divaricata and Swietenia mahagoni respectively. These plant species have also showed the higher relative density, relative frequency and relative abundance. The percentage of native and exotic species was found here 44% and 56%, respectively. Most abundant and dominant plant species in the road dividers are exotics including Mimusops elengi,Polyalthia longifolia, Leucaena leucocephala and Swietenia mahagoni. Species diversity value was found higher in Hatirjeel site whereas lowest in Baridhara- Badda site. A number of recommendations are made based on the present results for the management of plant species diversity in the road dividers of Dhaka city. Some recommended native plant species for plantation according to the width and soil depth in the road dividers are Cassia fistula, Holarrhena pubescens, Firmiana colorata, Shorea robusta, Miliusa valutina, Butea monosperma, Alstonia scholaris, Toona ciliata, Ficus racemosa, Bombax ceiba, Woodfordia fruticosa, Melastoma malabathricum, Sterculia villosa, Grewia microcos, Syzygium cumini, Tabernaemontana divaricata, Ixora coccinea, Terminalia bellirica, Terminalia arjuna and also native seasonal flowers. Bangladesh J. Plant Taxon. 28(1): 141-154, 2021 (June)

ANALISIS PENGUKURAN KONSENTRASI KARBONMONOKSIDA (CO) PADA BREATHING ZONE PETUGAS PARKIR BASEMENT MALL KOTA BANDUNG

2019 ◽  
Author(s):  
Gede H Cahyana
Keyword(s):  
Air Pollution ◽  
Indoor Air ◽  
Indoor Air Pollution ◽  
Sampling Method ◽  
Breathing Zone ◽  
Gas Concentration ◽  
Average Value ◽  
Co Concentration ◽  
Personal Dosimeter ◽  
Co Gas

Indoor air pollution in closed room is one of the air pollution that gives serious threats to human health. One of them come from vehicle gas emissions in closed parking area. This research identifies and analyses CO concentration measured in Mall X parking man’s breathing zone with closed parking area and in Mall Y semi-opened parking area. CO measurement carried out by passive sampling method using Personal Dosimeter Tubes. Measurement result of CO gas concentration to parking man’s breathing zone in Mall X was 25 – 81,25 ppm with average value in 50 ± 26,15 ppm. Meanwhile CO gas concentration in Mall Y gave result 3,13 – 12,5 ppm with average value in 7,88 ± 4,36 ppm. Correlation value between CO concentration and its intake in Mall X area was 0,9983, meanwhile correlation value between CO concentration and its intake in Mall Y area was 0,9903. It was concluded that CO gas concentration measured in parking man’s breathing zone influenced the differences of CO intake value in significance value.

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