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Volume 50 (1986 - 198･･･
- Issue 5 Pages 1-
- Issue 4 Pages 243-
- Issue 3 Pages 167-
- Issue 2 Pages 77-
- Issue 1 Pages 1-
Volume 50, Issue 5
Displaying 51-55 of 55 articles from this issue
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Namiko SHIBUYA, Masafumi SHIMADA, Yorikazu MARUTA1986 Volume 50 Issue 5 Pages 299-304
Published: March 31, 1986
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSThe avifauna are at the top of the food chain in the urban ecosystem. They are important in maintaining the balance of the urban ecosystem and give pleasure to many residents.
This study focused on the relation between the avifauna, the form of land-use and the extent of green covered areas in Matsudo.
The results are summarised as follows;
(1) 24 species were observed. The Japanese Tree-Sparrow (Passer montanus stauranus), the Brown-eared Bulbul (Hypsipetes amaurotis amaurotis) and the Grey Starling (Sturnus cineraceus) comprised 76% of the total observed. One may say that these 3 species are the representative avifauna there.
(2) The number and kinds of birds is determined by the general condition of the environment. Variety in the green covered areas attracts a great variety of birds. In the farming areas where conditions are relatively uniform, the number of species is limited, although the number of birds of each species is large.
(3) It is necessary to establish on open space system within the city. Particularly in the built-up areas that cannot accommodate much open space, it is important to plant many trees in the garden to attract avifauna.
(4) Certain kind of avifauna are attracted to specific environments. With detailed research the presence or absence of such avifauna can be used as an index for the environment.View full abstractDownload PDF (742K) -
Tsuyoshi HONJO, Tadashi TAKAKURA1986 Volume 50 Issue 5 Pages 305-309
Published: March 31, 1986
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSLandsat TM data is analyzed to give the distribution of green spaces in urban area with the three methods of classification; i. e. maximum likelihood decision rule, image ratioing technique and fuzzy clustering. The possibility of detecting small green spaces whose scales are less than a pixel is considered. The resulted distribution is compared with the ground truth to evaluate the efficiency of the methods.
Results show that maximum likelihood decision rule is not suitable for the analysis of urban cover which consists of various types of surfaces. Result of the ratioing technique generally agrees with the ground truth in spite of the simplicity of the method.
With fuzzy clustering, the distribution of green spaces agrees well with the ground truth and it can be said that small green spaces are well detected. This method is the most effective method in classifying urban surfaces among these tree methods.View full abstractDownload PDF (685K) -
Tuneo ITAGAKI, Sadao TAKIGAWA1986 Volume 50 Issue 5 Pages 310-314
Published: March 31, 1986
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSA field fire occurred at Kushiro moor in April 1985 and its influence on vegetation was investigated by means of aerial color photography. The investigation clearly revealed that the degree of destruction due to a fire's ability to progress can be limited by rivers, artificial structures, and thick forests which work as barriers to limit spread. The influence on vegetation was investigated by aerial photography 6 months following the fire. However, the investigation could not specify the extent of damage. This is due to the fact that the fire did not exert a significant influence upon the subsurface of the earth which had been frozen at the time of the fire.View full abstractDownload PDF (5180K) -
Noboru MASUDA, Daishu ABE, Isao NAKASE, Yasuhiko SHIMOMURA1986 Volume 50 Issue 5 Pages 315-320
Published: March 31, 1986
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSIn order to improve the quality of greenery, it is important to focus on the manners in which people contact the greenery in their daily activities. In this study, we analyze the image of greenery which is captured by the people through their daily activities. The study produced the following findings: 1) It has become clear that the environment of the areas in which people live strictly reflects their image of greenery. 2) It has become clear that the territory of peoples daily activities is Classified into the four stages, and it also has become clear that the various greenery are classified according to the stage of territory.View full abstractDownload PDF (1106K) -
Daishu ABE, Kenichi MIYAZAKI, Akiharu KAMIHOGI, Isao NAKASE1986 Volume 50 Issue 5 Pages 321-326
Published: March 31, 1986
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSThis study intends to clarify the recognitions of park's atmosphare and for the changes of internal environs at city park in Osaka City after revitalizing projects. The questionaire was held concerning the atmosphare which was changed by reconstruction or rehabilitation and also internal environs of the parks. The three parks were selected for the case study. The results of the investigation for physical environs and human responses of users and adjacent residents of parks showed some useful characteristics and tendencies for park planning. As to the atmosphare of revitalized parks, they recognized that the project remoted to beautificate the parks but few affection to create naturalness. And also regardig to internal environs, they recognized good changes of apperances.View full abstractDownload PDF (971K)