scholarly journals EVALUASI FUNGSI EKOLOGIS RUANG TERBUKA HIJAU (RTH) PERKOTAAN SEBAGAI AREAL RESAPAN DI KOTA PONTIANAK (STUDI KASUS: TAMAN ALUN KAPUAS)

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
Febby Ekamukti Andini
Keyword(s):  
Physical Characteristic ◽  
Open Space ◽  
Ground Cover ◽  
Infiltration Rate ◽  
Economic Activities ◽  
Sand Soil ◽  
Rainwater Infiltration ◽  
Double Ring ◽  
One Year ◽  
City Park

   ABSTRACTAlun Kapuas Park is a city park that designated by The Park Departement as Green Open Space (RTH) in Pontianak city. In connection with the function of RTH as rainwater catchment, Alun Kapuas Park still got less attention because puddle often happens during the rainy season.  This research aims to determine 1) infiltration rate when the condition is not raining  and the day condition is raining, 2) the influence of soil physical characteristic and vegetation against the infiltration rate, 3) the potential of Alun Kapuas Park to absorb rainwater. Infiltration rate measurement method uses double ring infiltrometer, then it is analyzed by the method of Horton. The result of research indicate that the condition of dry day has average infiltration rate value of 5,62 cm/h greater than the condition of rainy days has average infiltration rate value of 3,20 cm/h. The highest infiltration rate value of  14,40 cm/h is point 4 with sand soil value of 64,64%, permeability value of 26,29 cm/h, and porosity value of 55,42%. Lowest infiltration rate value of 2,02 cm/h is point 3, with  sand soil value of 54,41%, permeability value of 5,14 cm/h, and porosity value of 47,33%. The greater values of permeability, porosity, and the sand fraction can increase the infiltration rate. Vegetation at Point 1, Point 2 and Point 4 is dominated by trees and grass have infiltration rate greater than 3 points dominated the ground cover plants and shrubs.  Potential seepage of rain for one year in Alun Kapuas  Park is 37% of the total volume of rainfall amounted to 54.801 m3, so it does not fulfill the ecological functions of city park as rainwater catchment have percentage of 75-95%. Something that can be suggested is  expanding the area of reforestation, choosing the composition of the vegetation right, replacing asphalt with paving blocks, and social-economic activities are not carried out in the area of reforestation.Key word: city park , infiltration rate, soil physical characteristic, vegetation  

scholarly journals Infiltrasi Pada Berbagai Tegakan Hutan Di Arboretum Universitas Lampung

2016 ◽  
Vol 4 (3) ◽  
pp. 21 ◽  
Author(s):  
Tomy Irawan ◽  
Slamet Budi Yuwono
Keyword(s):  
Open Space ◽  
Hydrological Cycle ◽  
Ground Cover ◽  
Infiltration Rate ◽  
Free Standing ◽  
Mixed Stands ◽  
Double Ring ◽  
A Value ◽  
Run Off ◽  
Properties Of Soil

One of the important functions of the forest is as a provider of water through infiltration processes in the hydrological cycle. Green open space at Lampung University has a variety of tree stands, including Sengon Buto, Teak stands and mixed stands. The stand has the potential to increase infiltration and reduce run-off. The study aims to determine the rate of infiltration that occurs under a variety of stands by using Double Ring infiltrometer, and conducted during February - March 2015.The results showed a mix of stands have the highest infiltration rate of 56.60 cm/hour when compared with Sengon Buto, stands of teak, and free standing, each of which has a value of 51.60 cm/hour, 45.60 cm/hour, and 4.80 cm/hour. Based on the classification according Kohnke (1968), the infiltration rate contained under each of these stands belong to the classification very quickly, while on land classified as being free standing. Factors that affect the rate of infiltration directly that the initial soil water content, bulk density, soil porosity, and clay fractions. Tree density, density and canopy strata, as well as ground cover plants indirectly affects infiltration is to establish the physical properties of soil that can support increased infiltration.

scholarly journals Temporal and spatial infiltration characteristics of soil under acacia and pine plantations in the mountainous area of Van Don, Quang Ninh, Vietnam

2019 ◽  
Vol 11 (2) ◽  
pp. 51-64
Author(s):  
Xuan Dung BUI ◽  
Thi Hoai Thu VU ◽  
Thi My Linh NGUYEN ◽  
Takashi GOMI
Keyword(s):  
Ground Cover ◽  
Infiltration Rate ◽  
Mountainous Area ◽  
Soil Infiltration ◽  
Infiltration Process ◽  
Double Ring ◽  
Pine Tree ◽  
Dye Tracer ◽  
Significant Difference ◽  
The Hill

To determine the soil infiltration characteristics of pine and acacia plantations, we used a double-ring infiltrometer in 15 different locations of up-hill, mid-hill and down-hill part in each kind of plantation from June to August, 2018. The spatial infiltration characteristics of the soil at three plots (with no tree, with acacia tree and with pine tree) was determined by dye tracer method. The factors having an impact to the infiltration process were also analyzed. The main findings include: (1) The soil infiltration rate under both pine and acacia plantation decreased over time and it was the highest in the bottom of the hill and the lowest in the middle of the hill. The infiltration rate and the total infiltrated water in one hour at the acacia plantation were higher than ones at the pine plantation. However, statistical significant difference was only found for stable infiltration rate between two plantations; (2) The area and the depth of infiltrated water were the highest at the plot without trees, smaller at the soil of acacia plot and smallest at the soil of pine plot. All spatial infiltration rates were within the findings of previous studies; (3) The result indicated that soil with high ground cover has high infiltration rate. Để xác định đặc điểm thấm nước của đất dưới rừng trồng Thông và Keo, vòng đôi đo tốc độ thấm đã được sử dụng để đo ở sườn trên, sườn giữa và sườn dưới (5 lần/ ví trí) cho mỗi loại hình rừng từ tháng 6-8/2018. Trong khi, thuốc nhuộm được sử dụng để kiểm tra đặc điểm thấm nước của đất theo không gian trên 3 ô (ô không có cây, ô trồng Keo và ô trồng Thông). Các yếu tố ảnh hưởng đến đặc điểm thấm nước cũng được phân tích. Kết quả chính thu được: (1) Tốc độ thấm ở cả hai loại rừng giảm dần theo thời gian và cao nhất ở sườn dưới,  nhỏ nhất ở sườn giữa. Cả tốc độ thấm và tổng lượng nước thấm trong một giờ của rừng keo đều cao hơn so với rừng Thông. Tuy nhiên, chỉ có tốc độ thấm ổn định là khác biệt có ý nghĩa thống kê; (2) Diện tích và độ sâu nước thấm xuống đất cao nhất ở ô không có cây, nhỏ hơn ở ô trồng Keo và nhỏ nhất ở ô trồng Thông; (3) Độ che phủ thực vật càng cao thì lượng nước thấm càng lớn.

CITY PARK AS A NATURAL-ANTHROPOGENIC OBJECT (ON THE EXAMPLE OF THE PARK OF THE 50th ANNIVERSARY OF VLKSM IN THE CITY OF YEKATERINBURG)

2021 ◽  
pp. 133-140
Author(s):  
L. I. ATKINA ◽  
◽  
L. V. BULATOVA ◽  
L. P. ABRAMOVA
Keyword(s):  
Soil Cover ◽  
Negative Impact ◽  
50Th Anniversary ◽  
Ground Cover ◽  
Peat Bogs ◽  
Anthropogenic Transformation ◽  
History Of ◽  
High Level ◽  
The City ◽  
City Park

Based on a comprehensive assessment of the state of the park landscape, the level of its anthropogenic transformation is determined, which is necessary to identify the potential for restoring the natural biodiversity of the object. It is reported that the plantations and soil cover of the park of the 50th anniversary of VLKSM are very heterogeneous; they reflect the history of park establishment. The soil cover consists of three main types: sod, bog and urbanozem. It should be stressed that the best preserved part of the park is the plot with boggy soils around the pond. Herbaceous plants growing on the plot are very similar to the species composition of the ground cover of overgrown peat bogs. Over the 40 years since the foundation of the park, a high level of pollutants has been accumulated in the soil, which allows us to state that the negative impact occurs constantly. Consequently, the existing plantings are insufficient to protect visitors from vehicle emissions from the roads along Yasnaya and Shaumyana streets. There are enough natural elements in the park of the 50th anniversary of VLKSM; this should be taken into account in its redevelopment. There is an opportunity to restore the reservoir and return the plantings to their natural appearance. It is proposed to add elements of landscape decoration in the park.

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 PERGESERAN MAKNA FILOSOFIS ALUN-ALUN KOTA BANDUNG PADA ABAD XIX – ABAD XXI

2019 ◽  
Vol 11 (2) ◽  
pp. 203
Author(s):  
Miftahul Falah ◽  
Agusmanon Yuniadi ◽  
Rina Adyawardhina
Keyword(s):  
Open Field ◽  
Open Space ◽  
Sacred Space ◽  
City Centre ◽  
Tourist Destination ◽  
Historical Method ◽  
Public Open Space ◽  
The City ◽  
City Park

Sebagai kota yang dibangun dengan mempertimbangkan aspek kosmologis, alun-alun merupakan salah satu elemen pembentuk Kota Bandung sejak menjadi pusat pemerintahan Kabupaten Bandung pada 25 September 1810. Alun-alun Kota Bandung mengalami perubahan fungsi, dari titik batas ruang profan dan ruang sakral menjadi ruang terbuka publik sehingga makna filosofisnya mengalami pergeseran. Untuk memahami perubahan tersebut secara kronologis, dilakukan penelitian historis dengan menerapkan metode sejarah yang terdiri dari empat tahap, yaitu heuristik, kritik, interpretasi, dan historiografi. Hasil penelitian menunjukkan bahwa dalam perkembangannya, warga Kota Bandung tidak lagi memandang alun-alun sebagai salah satu elemen penyeimbang antara makrokosmos dan mikrokosmos, melainkan sebagai ruang terbuka publik tempat bersosialisasi seluruh warga kota. Fungsi Alun-alun Kota Bandung menunjukkan perubahan, dari sebuah lapangan terbuka dengan fungsi administratif kota tradisional hingga menjadi sebuah taman kota yang menjadi destinasi wisata di pusat kota sehingga memperlihatkan fungsi sosial-ekonomi.As a city that was built which takes the cosmological aspect into consideration, the square is one of the elements that formed the city of Bandung since becoming the capital of Bandung Regency on September 25, 1810. Its changing functions, which were traditionally perceived as a boundary of profane and sacred space into modern public open space, reflected a shifting in philosophical meaning. To understand the changes chronologically, this paper uses historical method which consists of four stages, namely, heuristics, critique, interpretation, and historiography. The results show that gradually the citizens of Bandung no longer look at the city square as one of the elements of the balance between the macrocosm and microcosm, but rather as a place for community gatherings. Its function changes from an open field with the administrative role of the traditional city into a city park that became a tourist destination in the city centre with socio-economic functions.

scholarly journals The effect of land uses to change on infiltration capacity and surface runoff at latung sub watershed, Padang City Indonesia

2021 ◽  
Vol 331 ◽  
pp. 08002
Author(s):  
Rusli HAR ◽  
Aprisal ◽  
Werry Darta Taifur ◽  
Teguh Haria Aditia Putra
Keyword(s):  
Land Use ◽  
Surface Runoff ◽  
Land Use Changes ◽  
Curve Number ◽  
Soil Infiltration ◽  
Infiltration Capacity ◽  
Rainwater Infiltration ◽  
Double Ring ◽  
Hydrology Modeling ◽  
Runoff Discharge

Changes in land use in the Air Dingin watershed (DAS) area in Padang City, Indonesia, lead to a decrease in rainwater infiltration volume to the ground. Some land use in the Latung sub-watershed decrease in infiltration capacity with an increase in surface runoff. This research aims to determine the effect of land-use changes on infiltration capacity and surface runoff. Purposive sampling method was used in this research. The infiltration capacity was measured directly in the field using a double-ring infiltrometer, and the data was processed using the Horton model. The obtained capacity was quantitatively classified using infiltration zoning. Meanwhile, the Hydrologic Engineering Center - Hydrology Modeling System with the Synthetic Unit Hydrograph- Soil Conservation Service -Curve Number method was used to analyze the runoff discharge. The results showed that from the 13 measurement points carried out, the infiltration capacity ranges from 0.082 - 0.70 cm/minute or an average of 0.398 cm/minute, while the rainwater volume is approximately 150,000 m3/hour/km2. Therefore, the soil infiltration capacity in the Latung sub-watershed is in zone VI-B or very low. This condition had an impact on changes in runoff discharge in this area, from 87.84 m3/second in 2010 to 112.8 m3/second in 2020 or a nail of 22.13%. Based on the results, it is concluded that changes in the land led to low soil infiltration capacity, thereby leading to an increase in surface runoff.

scholarly journals Análise Morfométrica da bacia hidrográfica do rio Marapanim, Pará: estudo aplicado ao planejamento ambiental e análise integrada da paisagem

2021 ◽  
pp. 2071-2086
Author(s):  
Aline Soares Lima ◽  
Marcia Aparecida da Silva Pimentel ◽  
Jones Remo Barbosa Vale
Keyword(s):  
Environmental Planning ◽  
Infiltration Rate ◽  
Morphometric Parameters ◽  
Central Theme ◽  
Economic Activities ◽  
Family Farming ◽  
Hydrographic Basin ◽  
Calculation Of Parameters ◽  
Territorial Planning ◽  
Arc Gis

This research has as its central theme the analysis of the morphometric parameters of the hydrographic basin of the Marapanim River, Pará, as a way to subsidize the environmental planning of the area. Studies like these are justified by the regional importance of the economic activities carried out in the municipalities that make up this unit, such as oil palm in its high course and the predominance of family farming and livestock in several sections of the medium and low course. Researches with this purpose are of fundamental importance for the knowledge of the environmental dynamics in the Eastern Amazon. The methodology used was carried out from the literature review, calculation of parameters using Arc Gis and preparation of cartographic material, in addition to the treatment of information with the inference of its applications to environmental planning. The results obtained allowed us to understand that the Marapanim basin has low runoff and a higher infiltration rate, due to its physical characteristics, in addition to medium to low flooding tendencies, which also occur due to the ratio of altitudes that vary from 0 to 70 meters and they are considered of low impact, indicating the need to implement actions aimed at planning related to territorial planning and the use of natural resources.

scholarly journals Impact of Overseeded Grass Species, Seeding Rate and Seeding Time on Establishment and Persistence in Bermudagrass

2011 ◽  
Vol 29 (2) ◽  
pp. 75-80
Author(s):  
Thomas Serensits ◽  
Matthew Cutulle ◽  
Jeffrey F. Derr
Keyword(s):  
Perennial Ryegrass ◽  
Ground Cover ◽  
Italian Ryegrass ◽  
Grass Species ◽  
Percent Cover ◽  
Seeding Rate ◽  
Cool Season ◽  
Seeding Time ◽  
One Year ◽  
Cool Season Grass

Abstract Cool-season grass species are often overseeded into bermudagrass turf for both aesthetics and functionality during the winter months. When the overseeded grass persists beyond the spring, however, it becomes a weed. Experiments were conducted to evaluate overseeded grass species and seeding rate on turf cover during the fall, spring, and summer. The ability of perennial ryegrass, Italian ryegrass, and hybrid bluegrass to then persist in bermudagrass one year after seeding was determined. Both perennial ryegrass and Italian ryegrass produced acceptable ground cover in the spring after fall seeding. Hybrid bluegrass did not establish well, resulting in unacceptable cover. Perennial ryegrass generally had the most persistence one year after seeding, either because of the survival of plants through the summer or because of new germination the following fall. The highest cover seen one year after seeding was 24% with perennial ryegrass in the 2005 trial. Maximum cover seen with Italian ryegrass and hybrid bluegrass 12 months after seeding was 19 and 8%, respectively. Seeding perennial or Italian ryegrass in February achieved acceptable cover in spring in the first trial but not the second. Persistence the following fall, however, was greater in the second trial, suggesting new germination. Percent cover 12 months after seeding tended to increase as the seeding rate increased, also suggesting new germination the following fall. Although quality is lower with Italian ryegrass compared to perennial ryegrass, it transitions out easier than perennial ryegrass, resulting in fewer surviving plants one year after fall seeding.

scholarly journals Ponding time in infiltration process for different land use

2021 ◽  
Vol 930 (1) ◽  
pp. 012054
Author(s):  
I K Hidayati ◽  
Suhardjono ◽  
D Harisuseno ◽  
A Suharyanto
Keyword(s):  
Land Use ◽  
Physical Properties ◽  
River Basin ◽  
Sugar Cane ◽  
Infiltration Rate ◽  
Soil Types ◽  
Land Uses ◽  
Infiltration Process ◽  
Double Ring ◽  
Density Values

Abstract Ponding time is the period from the beginning of rainfall/infiltration until the occurrence of ponding. This paper aims to determine the infiltration rate and ponding time on different land uses, such as open fields, residential, agriculture, and vegetation. This research was conducted in one of the watersheds in the Brantas River Basin, namely the Lesti River Basin, which is administratively included in the Malang Regency, East Java. The Lesti River is one of the tributaries of the Brantas River, which originates around Mount Semeru, a very intensive area for planting rice, sugar cane, and coffee. Infiltration data were collected at 35 points using a double-ring infiltrometer spread across the Lesti watershed with Andosol, Mediterranean, and Regosol soil types. At the same time, ponding time was obtained from infiltration measurements in the field using the flooding method. The physical properties of the soils were tested in the laboratory to obtain water content, porosity, and bulk density values. This study resulted in the infiltration rate and ponding time for each land use and shows how the physical properties of the soil affect the ponding time.

The evolution of informal land use in a Nigerian market

2018 ◽  
Vol 47 (5) ◽  
pp. 745-758
Author(s):  
Adekunle Moruf Alabi ◽  
Mubarak Olatunji Lasisi ◽  
Maryam Abimbola Azeez
Keyword(s):  
Land Use ◽  
Informal Economy ◽  
Open Space ◽  
Human Interaction ◽  
Geographical Information ◽  
Economic Activities ◽  
Urban Markets ◽  
The Unemployed ◽  
The Impact ◽  
Continuous Demand

Urban growth is one of the indicators that reflects human interaction with the environment and has a direct effect on land use change. Continuous demand for space in Nigeria’s urban markets to accommodate shops and other retail outlets used for informal economic activities is accompanied by a change of use. This study examined the impact of informal economic activities on change of use in Bola Ige International Market, Ibadan. The concept of informal economy and the bid rent theory provided the conceptual/theoretical framework for this study. Geographical Information System was used to capture the change of use between 2006 and 2016. Land used for informal economic activities increased from 39.45% in 2006 to 55.35% in 2016, signifying a 15.9% increase. This implies that other land uses have been illegally converted and encroached. Transportation land use decreased from 31.47% in 2006 to 30.28% in 2011 and to 28.73% in 2016. Land used for open space (including parking space, and open trading area) which was 26.7% in 2006 reduced to 20.24% and 11.05% in 2011 and 2016, respectively. Most of the green areas (62.1%) have been converted to informal trading spaces between 2006 and 2016. Illegal change of use was credited to harsh economic condition in the country, and the engagement of the unemployed and retirees in informal sector economic activities. It was suggested that urban managers in conjunction with informed activists, researchers and citizens need to formulate and implement planning regulations that will integrate informal economic activities.

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