Country：Japan

Country：Japan

<p>In recent years, “green infrastructure (GI),” which uses the infiltration function of the natural environment, has attracted attention as a new flood control measure. When introduced in actual urban spaces, the GI that can be introduced differs depending on the local social environment. Therefore, this study designs a GI by considering the local social environment through interviews with experts and then clarifying their effects using a numerical simulation model. The GI was found to have sufficient flood control effects. It was also found that prioritizing the introduction of GI to parking lots in downtown areas is desirable.</p>

DOI： 10.11361/journalcpij.59.1613

Authorship：Lead author  

DOI： 10.3130/aija.88.3295

DOI： 10.1016/j.cities.2023.104562

Authorship：Lead author  

DOI： 10.11361/journalcpij.58.812

DOI： 10.11361/journalcpij.58.796

<p>This study aimed to understand how different green spaces allocation would moderate higher urban temperatures. Specifically, numerical simulation was performed for understanding air temperature and wind distribution in August 2020, and the Weather Research and Forecasting meso-scale meteorological model was used in Sakai City. Furthermore, we performed climate simulation under three future green spaces allocation scenarios corresponding to population decline. In addition, climate analysis maps were created for each of these scenarios, and a comparison and discussion were conducted on how Sakai City’s green spaces should be arranged to accommodate future population decline. The results showed that conservation of green spaces reduced high temperatures in the city as a whole, but the distribution trends of temperature reduction area differed among the scenarios. These results suggested that while a large area of green spaces was effective in reducing temperatures locally, the green space network can also extend the temperature reduction over a wider area.</p>

DOI： 10.5632/jila.86.611

<p>COVID-19 has led to demands for a different lifestyle. Parks are required to respond to complex needs, such as promoting their use while preventing infection. This constitutes an opportunity for citizens to rediscover the appeal of the park, which is accessible to everyone. Therefore, this study aims to comprehensively understand the role and significance of urban parks in Japan and apply this understanding to improvement and management based on the changes in usage and user comments for urban parks. Specifically, we investigated both the objective viewpoint, such as the current state and actual usage of urban parks, and the subjective viewpoint, such as the comments and opinions of park users using the text data of newspapers from January 2020 to March 2021. In addition to changes in the number of people infected, the survey found positive feelings about living in a park as people are forced to refrain from living, although negative opinions were found about the park. Accordingly, we can understand the process by which people again realize the need for the urban parks itself.</p>

DOI： 10.5632/jilaonline.15.39

Green Infrastructure (GI) which utilizing various function of natural recourses for resolving social issue is necessary to correspond with the bad effects seems to be caused by climate change, such as urban warming and increasing floods in recent year. This study aims to proposing design guideline for using small valley called “Yato” as GI effectively and we evaluated the thermal (air temperature) and water environment (flow rate) in some of them in Yokohama. All Yato in Yokohama are also classified six types based on these results, and countermeasures to improving thermal and water environment were suggested for each type.

DOI： 10.3130/aijt.28.918

In this study, we investigated the actual utilization and the effects of the urban open spaces as a workplace through a web questionnaire survey performed in October 2020 for workers in Osaka city under the situation of the introduction of ABW or the spread of COVID-19. As a result, it is possible to identify many people who work in urban open spaces more than a few times a week, and the frequency is increasing in the spread of COVID-19. In addition, not only sidewalk cafes but also open spaces at public facilities and parks were chosen. It was found that environmental factors such as shade, sunshine, and greenery were emphasized in parks, plaza, and open spaces at private facilities, and that good ideas came to mind in parks, compared to other places.

DOI： 10.5632/jila.85.601

Publishing type：Research paper (scientific journal)  

DOI： 10.5632/jila.85.457

Kind of work：Joint Work  

Publishing type：Research paper (scientific journal)  

DOI： 10.11361/journalcpij.56.485

Publishing type：Research paper (scientific journal)  

In order to clarify the walkability of the urban environment, it is necessary to investigate not only the required behaviors but also voluntary behaviors. The purpose of this study is to clarify the characteristics that a walkable urban environment in urban areas of Osaka should have from the optional action of walking. First, we grasped the relationship between walks and environmental factors on a regional basis. Next, we grasped what kind of route was taken for what reason. In order to create a walkable urban environment that induces voluntary behavior in residential areas, it became clear that an environment that is “encouragement to walk” is required in addition to an environment that is “easy to walk”. It is important to clarify the issues and potentials of the district, and to consider the environment improvement according to the demand for walks.

DOI： 10.11361/journalcpij.56.477

CiNii Article

Other URL： https://www.jstage.jst.go.jp/article/journalcpij/56/3/56_477/_pdf

<p>This study aims at clarifying streetscape characteristics in harmony with kofun for planning urban area where kofun can be enjoyed while preserving the value of kofun in Mozu-Furuichi Kofun Group World Heritage by using landscape image taking a kofun as an object and a street crossing of residential urban district as a viewpoint place. This paper performed factor analysis by SD method using the words extracted from landscape plans, and understood the viewpoints of the evaluation. In addition, this paper organized the recognition elements in each target landscape, and understood the characteristics of landscape elements. Furthermore, harmony evaluation in streetscape with kofun in each landscape, and it was discussed what kind of landscape could be said the streetscape in harmony with kofun. From the results of these analyses, it can be understood that streetscape in harmony with kofun is evaluated from the three viewpoints of "regularity" "naturalness" and "history and culture" and that they are evaluated from the greenery along the streets, the color and design of wall surfaces of buildings, the walls and fences of buildings, and the pavement of roads and sidewalks, and their unity.</p>

DOI： 10.5632/jila.84.541

CiNii Article

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

<p>This study aims to discuss the psychological process how the evaluation and perception of residential area or neighborhood parks were connected with the formation of attachment to residential area through neighborhood parks. Concretely, the structural equation modeling was conducted based on the results of questionnaire surveys for the residents in new town. In addition, this study targeted two areas with different resident's activities, "Suzaku area" and "Sakyo area" in new town where the site of "Basic Parks for Community Use" is planned because the relationship between "evaluation and perception of residential area or neighborhood parks" and "attachment to residential area" is discussed limited to the park. As a result, the following findings were obtained; 1) in both areas, "attachment to residential area" is influenced "attachment to neighborhood parks." And, the positive "evaluation of neighborhood park environment" and "involvement through participation into neighborhood park activities" encourages "attachment to residential area" through "evaluation of residential environment," "involvement through participation into residential activities" and "attachment to neighborhood parks." 2) The difference is revealed that "attachment to residential area" and "attachment to neighborhood parks" have influence on each other only in "Suzaku area" which residents pursue activities.</p>

DOI： 10.5632/jila.83.545

CiNii Article

Kind of work：Joint Work  

<p>This study is the case study which verifies usefulness of the methodology we have developed to score changes in sequential riverscape. We extracted 24 riverbanks worth being part of waterscape viewed from the water surface and riverbank, located in the urban area of Osaka City, created a sequential 2D image of each riverscape, identified important elements of and open spaces, and then scored them in accordance with their features relevant to sequential changes. Through the scoring, the study found that the sequential views from the water surface were categorized into four types, ranging from the richest in scenery variation to the least changeable monotonous type. Furthermore, it discovered that the middle type was divided into two subgroups by the amount of green coverage space in variation, that is, whether it serves as the basis for landscape changes or solely appears as a frequent accent. Our scoring method made it easy to grasp contributors to landscape attractiveness, including a sequence of changes and scenic spot components, as well as human viewing locations along each river. This technique has thus been proved useful in understanding the characteristics of rivers when riverfront improvement is designed and planned.</p>

DOI： 10.5632/jila.83.615

CiNii Article

<p>In this study, we will understand the actual situation of street trees maintenance management systems in local governments in Japan and the development status of street trees maintenance management plans and management guidelines. Next, this study was to understand the current state of the street trees maintenance management system and its impact, and to investigate the problems of citizen's participation in street trees maintenance management. As a result, street trees maintenance work is mainly done in the civil engineering road sector. In large local governments, staff specializes in landscaping, while in small local governments, it's mainly civil engineering. In addition, most street trees management methods are outsourced by contractors, with less than half direct management by staff. The policy to maintain street trees is positioned in many local government green master plans. Since 2015, local governments have developed conservation plans for street trees and are working on sound conservation. Since the 2000s, local governments have been working on maintenance management systems with the participation of residents. Most of them are road beautification activities based on adaptive systems. In the future, the challenge will be to further expand the system and raise citizen's interest and value perception.</p>

DOI： 10.5632/jila.83.509

CiNii Article

Publishing type：Research paper (scientific journal)  

In recent years, the temperature rise of the city caused by global warming and urban heat island phenomenon is regarded as a problem in Japan, and the necessity of urban development considering that mitigation is pointed out. The main factors of the urban heat island phenomenon are an increase in anthropogenic heat release and an increase in urban land use, and mitigating temperature rise by changing urban land cover to natural land cover (for example, green land).

 Meanwhile, Japan is beginning to enter declining population era, and various problems caused by downgrading of urban district accompanying this are going to be concerned in the future. The need for "compact city" has been pointed out as a countermeasure, and examination of future land use arrangement is required. In the previous researches, authors will first prepare future land use deployment scenarios for the specific cities, predict and evaluate future city climate under those scenarios, and make effective land use arrangement from the viewpoint of mitigation of the city high temperature are considering. However, since the climate characteristics differ among cities, the appropriate land use scenario in each city may be different.

 Based on such background, it is thought that urban development should be considered in consideration of mitigation of high-temperature urbanization. And it is also thought that cities in Chugoku region has several climate characteristics (Tottori, Matsue, Okayama, Hiroshima, Yamaguchi). Authors first created the direction of urban area consolidation under the declining population as scenarios for each land use. Then numerical simulation by meso weather model WRF for each scenario is carried out.

 Authors set four scenarios: master plan scenario, sea breeze effect oriented scenario, distributed green scenario, suburban green scenario. Through the relative comparison of the results under each scenario, the objective is to grasp the suitable land use scenario for mitigating the urban warming for each city.

 According to the results of numerical simulation, it is inferred sea breeze effect scenario are effective in cities with less wind pattern of urban areas, and distributed green scenarios are more effective in cities with lower relative humidity. In addition, the master plan scenario and the suburban green scenarios are found to be less effective being compared with the other two scenarios. The scenario in which the average temperature in the urban area is the lowest is sea breeze effect scenario in Tottori, Matsue, Yamaguchi and the one in which distributed green scenario in Okayama, Hiroshima.

 As a conclusion, the land use scenario which has larger influences on the mitigation urban warming is different in each city. It is thought that it is necessary to make the strategic land use plan considering the local climate characteristics of each city in the future.

DOI： 10.3130/aije.84.771

CiNii Article

Other URL： https://www.aij.or.jp/paper/detail.html?productId=624798

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Kind of work：Joint Work  

Authorship：Corresponding author   International / domestic magazine：International journal  

J-GLOBAL

J-GLOBAL

J-GLOBAL

The aim of this study was to investigate the character of Nakanoshima through an evaluation of the landscape from the perspective of water and greenery. First, 1,804 photos are taken on October 2021. Next, the photos were classified into the stream axis river-view and the opposite shore river-view, and analyzed them by inside and outside of Nakanoshima. And the composition of the landscape was evaluated by combining the appearance forms of water and green. As a result, it was found that in the stream axis view, in addition to the view with perspective emphasis by water and green on both sides, the floor surface and the banded water surface accentuate the greenery as a background, and in the opposite shore view, the superimposed landscape of water and green and the enclosed landscape where the water surface is emphasized by the green support the character of Nakanoshima.

DOI： 10.11361/cpijkansai.20.0_129

The purpose of this study is to clarify the characteristics of the use by conducting a survey of Chayamachi district, where there are some public spaces with different characteristics. The actual situation of use was understood by the following method. A route census survey conducted in October 2021 on weekdays and holidays, and we confirmed them by weekday / holiday, time period, and space type. As a result, we found that the public spaces in the Chayamachi district accommodate a variety of user groups, with different trends in use on weekdays and holidays and at different time period. Also, their public spaces are used differently according to the different characteristics of the space, such as spaces that are used for long time and spaces that are used for temporary time. Therefore, the district as a whole accommodate the different purposes of use of the people who spend time in the district.

DOI： 10.11361/cpijkansai.20.0_133

This study aims to discuss the using and understanding environment by park users based on "active approach" for the environment to bring outdoor equipment and "discernible approach" for the environment to select appropriate locations. A survey of the actual conditions of park users was conducted at eight parks located in the six wards of central Osaka City in September-October 2021 and identified 365 groups. 51 types of "active approach" can be identified among them many users bring rug for casual relaxation. 22 types of "discernible approach" can be identified among them users emphasize the natural surfaces of the canopy, floor and sides. Additionally, 151 groups of the using and understanding environment chose the environment of nature surface of canopy, floor, sides. Among them, 140 groups talk, eat or drink and take a rest. Therefore, we can confirm the using and understanding environment according to each purpose by park users.

DOI： 10.11361/cpijkansai.20.0_17

In this study, to explore the ideal green environment for mitigating high temperatures in Sakai City, we used the meso-scale meteorological model WRF to analyze the current climate in August 2020 and the climate under the scenario of conservation and maintenance of the green environment with reference to the green future vision map of the ""Basic Plans for Greening,"" and created and compared the respective climate analysis maps.The results showed that during the daytime, the effect of the area greening was larger in the inland area, which is less affected by sea winds, and smaller in the coastal area.During the night, the temperature reduction effect of the green maintenance of the axis was clearly observed. In addition, it was suggested that the preservation of the existing hills and conservation and improvement of adjacent farmland will promote the effect of cool air flow and mitigate the high temperatures due to the integrated green environment.

DOI： 10.11361/cpijkansai.20.0_81

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With the declining birthrate, schools are being consolidated nationwide. It is required to make effective use of closed school facilities based on the actual conditions and needs of the community, and it is important to participate in the community in the process of discussion of the usage and operation. In this study, the characteristics of community participation in the utilization of closed schools were first grasped from 76 excellent cases nationwide, and then the detailed process from consideration to management of the utilization of closed schools was clarified from four excellent cases in Hyogo prefecture. We explored the main points of community participation in the utilization of closed schools in. There is community participation in half of the excellent cases nationwide. In the discussion process, It is effective for the local community to form an organization and collaborate with the local government, to use methods such as workshops and social experiments based on consensus building at meetings, and to consider flexible ideas with the participation of experts and young people.

DOI： 10.11361/cpijkansai.19.0_65

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The purpose of this study was to clarify the characteristics of the use of different spaces for different purposes by conducting a survey of the actual conditions of stay in the East Park of Utsubo Park. The tendency of visitors to stay in the park was examined by time of day, weekday, and holiday, and then by space (parkway type and area type) and by the presence or absence of elements that support actions and behaviors. As a result, it was confirmed that people used the parkway and area spaces differently according to their purposes, and especially in the lawn and forest areas, there was an active approach to the space, as seen in the creation of a place to live. In the future, it will be necessary to plan comfortable spaces based on the human behavior of use.

DOI： 10.11361/cpijkansai.19.0_93

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Kodo is a valuable historical resource that has supported exchanges between regions as a place for people and goods to move. On the other hand, in modern times, traveling by car has become the mainstream, and the attractiveness of the landscape that can be felt by walking has been lost. The historical ancient road "Ariwara no Narihira" is said to have been passed by Ariwara no Narihira, a poet of the Heian period, to Princess Kawachi. It is located in Yao City from the current Tenri City, and is popular as a walking route. There is. In this study, the attractive effect was clarified by symbolizing the spatial structure of the sequence landscape of the business flat road. Regarding symbolization, we applied Lynch's method of symbolizing sequence landscapes on highways to pedestrian spaces, and applied "sense of space and movement" and "position of gaze objects" consisting of nodes, landmarks, districts, and edges. We identified and analyzed the "look" and searched for the attraction effect.

DOI： 10.11361/cpijkansai.19.0_33

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In this research, we grasped the role of edible landscape in regional revitalization from its history in the world and its activities in Japan, and explored the potential. In the surveys, we conducted bibliographic surveys and interviews on the case of edible landscape in Japan managed by local residents. As a result, edible landscape has not only food security but also a role of comprehensive regional revitalization including educational meaning, economic effect, and community revitalization. Also, in each process from planting to eating of edible plants, in addition to the collaboration with neighborhood associations, the theme of edible may induce the collaboration with public organizations and various stakeholders such as companies and community organizations.

DOI： 10.11361/cpijkansai.18.0_9

CiNii Article

A place where people are interacting each other is said to be the good place in public space. The purpose of this study is to find the effect of installing street furniture in public space on the interaction of the people. We conducted a social experiment by installing some sets of table and chair in the fountain square in Amagasaki Central Park and observed behaviors of people in there. The sets of table and chair were set in two ways, one is along the fountain, the other is in one place. This experiment was found that people sitting on the installed chairs have a higher ratio of “eating/drinking”, “talking with their family or friends” and “seeing strangers” than people sitting on the fountain. In addition, behaviors of people talking with strangers are observed when the sets were set in one place. Therefore, the installation of street furniture in public space may stimulate the interaction of the people.

DOI： 10.11361/cpijkansai.18.0_5

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Midosuji is working on space redesign to transform the street for pedestrians from for cars. In recent years, number of population and tourists in surrounding areas are increasing and the people’s needs to midosuji has changed greatly. This study looks for the changes in staying behavior between 10years by analyzing comparatively on results of investigation about midosuji’s pedestrians’ staying behavior from Yodoyabashi to Namba in 2009 to the same investigation done in 2019. by examining the changes in physical characteristics of sidewalk as well as roadside private site and staying behavior characteristics the ways for forward space maintenances were searched. The characteristics of staying behavior are largely different in each area, and space maintenance are required depending on those situations for each area, such as to ensure walkable space by widening the sidewalk or introduction of sidewalk café.

DOI： 10.11361/cpijkansai.18.0_65

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