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Successor
Volume 35 (1971 - 197･･･
- Issue 4 Pages 3-
- Issue 3 Pages 1-
- Issue 2 Pages 9-
- Issue 1 Pages 15-
Volume 35, Issue 1
Displaying 1-6 of 6 articles from this issue
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On the dust-proof effects of the street leavesSyuzo TATUMI, Kenichi TOYAMA, Hiroshi ISHIHARA1971 Volume 35 Issue 1 Pages 15-21
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSIn the previous paper, the authors reported the differeences of the polluted materials in the street trees leaves between heavy and light traffic part. It was clearfyed that they were deposited on the leaves by various manner and, in heavy traffic, lower and side road parts of the tree crown, weredeposited more densely. This investigation was perfromed to clearly the dustproof effects of that tree leaves. The results obtained are as
follows:
1. The total polluted materials in the gauge, which was situated at 1 m height on the street tree zone, were maximum in Apri-May, and minimum in November-March. The authors presumed this was resulted of the abnormal leaffall phen-omenon of the camphor tree in Aipril.
2. Ash part of the polluted materials was the same result as total materials. Thr part, however, was changed seasonaly through the different manner from ash.
This was maximum in winter season.
This was presumed as a result of not only motor car gas but also the soot of heating fuel oil in winter season.
3. Lead contents, which were contained in motor car gas, were increased by followin7; order; winter>autumn>summer>spring.
4. The total polluted materials of a camphor tree leaves was estimated from the total leaf area of a tree, presumed about 1241.3×102 cm2.
In last summer (9/4 in september), there were 40 folds materials of early summer (5/22 inMay). This was presumed as a result of the differences of Ieaf growth form between early and last summer season.
5. A camphor tree was captured the materials more effectively in last summer than in early. It was the noticeble results that the polluted tar materials were highly captrued in last summer: 62% of the total materials at 1 m height on the tree zone.View full abstractDownload PDF (2480K) -
Rikio TAKAHASHI, Takaya OSAWA1971 Volume 35 Issue 1 Pages 22-30
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESS1. In order to research the effect of air Pollution on vegetation in Osaka region, flowering of osmanthus tree was quantitatively measured in 1965-6 wiht reference to carbohydrate content in its leaves. In 1966 brown discoloration of ginkgo leaves odserved in Osaka city was also investigatd.
2. Flowering of osmanthus was quite normal in cleam suburban area, while it was markedly restricttedly restricted in the central urban area of Osaka city. Carbohydrate content in leaves of osmanthus was apparently lower in Osaka city than in suburban area.
3. Leaves of ginkgo in Osaka city, especially in case of street trees, showed severe brown discoloration without reaching normal autumn coloring, which was supposedly affected by air pollution.View full abstractDownload PDF (2708K) -
Akira KAMEYAMA1971 Volume 35 Issue 1 Pages 31-40
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSThe judgement of grass slopes conditions must be done ecologically, for grass slopes are to be constructed to improve the localities and the landscapes from the road.
The ecological judgement of grass slopes is equal to the judgement of the progression of succession. And succession must be judged from two viewpoints. One is from floristic composition and the other is from biological spectra.
Firstly, the author investigated the plant communities of the railwayside slopes at Chuosen line in Tokyo, which were constructed 80 years before, in order to be able to compare succession stages of the slopes, which were constructed 1.5, 3, and 5 years before. The table work after this survey shows 4 plant communities.(Table 1) 2 Miscanthus types, Imperata type, and Zoysia type.
Secondly, vegetation survey was practiced on the slopes (constructed 1.5, 3, and 5 years before), which were at first covered by imported species (Festuca arundinacea Schreber and Eragrostis curvula Nees) (Table 2, 3, 4) and native species (Zoysia japonica steud.).(Table 5) From these results the progression of succession was diagnosed.
The method by floristic composition was firstly proposed. The diagnoses were as follows:
1. The difference of the progression between the two method of construction, by imported species and by native species, could not be recognized clearly.
2. On the banking slopes the progression is faster than the cutting slopes.
3. Earlier, the cutting slopes were wetter, but after 5 years or so they became drier than the banking slopes.
Then the method by biological spectra was proposed.(Table 6) The biological spectra were expressed according to the RAUNKIAER'S dominancy forms and the species percentage (Sp%). The results were as same as the former's. I recognized the stable condition of grass slopes, when the Sp% of Th became under 20% and the number of species became over 20View full abstractDownload PDF (1208K) -
Case Studies of Three Dimensional Design on Urban GreensKimio KONDOH, Wasako OTA, Yukie MORI, Yukiko SHIMAUCHI1971 Volume 35 Issue 1 Pages 41-45
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSResearching living habitations and feelings of users in roof gardens and balconies of apartment house, following results are conclused to establish fundamental designs of three dimensional urban greens, such as roof park.
1. Using percentages of roof garden on 9-stories buildings are about 5% of their population, and show a tendency to increase according to enrich ments of above gardens' facilities.
2. On their feelings, puposes of roof gardens' users are resting first, walking and speaking next; their hopes are beautifications with green and waterfirst, lawn next, wich playground level space.
3. About balconies of apartment houses, inhabitants hope gardening space first, children's play space next; the latter would be satisfyed in roof garden's planning on apartment houses.
4. Thus, depending upon tendsncies of apartment houses' increase, importances of roof garden become more; and depending upon those of urbanizations' progress, three dimensional designs on urban green must become to be studied.View full abstractDownload PDF (2755K) -
Satomi WATANABE1971 Volume 35 Issue 1 Pages 46-53
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSIn our country, the spaces as the Squares come into existence generally in the feudal age Edo-Jida for the first time historically.
And it is thought to be corresponded to the formation of the feudalistic Gemteinde.
In this study, such the socio-economic basis of the existence of the Squares, and its formative and developmental process are tried to be studied.View full abstractDownload PDF (1554K) -
[in Japanese]1971 Volume 35 Issue 1 Pages 54-57
Published: October 30, 1971
Released on J-STAGE: July 19, 2011
JOURNAL FREE ACCESSDownload PDF (6084K)
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