Journal of the Japan Society of Erosion Control Engineering
Online ISSN : 2187-4654
Print ISSN : 0286-8385
ISSN-L : 0286-8385
Volume 38 , Issue 5
Showing 1-6 articles out of 6 articles from the selected issue
  • [in Japanese]
    1986 Volume 38 Issue 5 Pages 1-3
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    Download PDF (522K)
  • Hiroshi MURAI, Katuhiro INOUE
    1986 Volume 38 Issue 5 Pages 4-11
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    At present, there are many devastated mountains in Greece. Soil loss from this area is a serious problem in terms of national land safeguard. Under such a condition, dams are being established in some places in order to meet the increasing demand of water and to control flood. However, it is pointed out that there is a dangerous possibility that the dams may be stuck with much eroded soil running from upper part of stream. We, together with cooperating researches of Aristoteles University and Ministry of Agriculture Forest Research Insitute in Greece, are continuing our study so as to clarify the causes of mountain devastation and establish the measures for devastation prevention. In 1984, we started our research with the help of Japan Society for Promotion of Science and plan to finish it within two or three years.
    This report is based on the first field survey held in Oct. 1984 and is a summary of overall view of devastated mountain and results of measurement on infiltration capacity and analyzing of some soil erodibilities in ten survey areas. In each survey area of different cover condition, infiltration capacity was measured by the simple inf iltrometer of tube type and soil . hardness by Yamanka's penetrometer under the naturally undisturbed condition. We analyzed some other erodibilities such as erosion ratio and dispersion ratio of the sampling soils in 0-5cm depth. These erodibility indexes are higher especially on bare land where goats are trampling and in man-made pine forest (Pinus halepensis Miller etc.) than in naturaloak (Quercus: pubescens Willd etc.) and fir (Abies cephalonica Loundon etc.).
    In the survey of this time. we could not clarify the followings; relation to causes and effects of mountain devastation phenomenon, confirmation of changing process on devastation condition and grasping of exact sediment yield from denuded area. Therefore, we are planning to survey these three points neyt time.
    Download PDF (11913K)
  • [in Japanese]
    1986 Volume 38 Issue 5 Pages 12-15_2
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    Download PDF (18576K)
  • 1986 Volume 38 Issue 5 Pages 16-31
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    Download PDF (8335K)
  • Djoko Legowo
    1986 Volume 38 Issue 5 Pages 31-32
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    Download PDF (2669K)
  • [in Japanese]
    1986 Volume 38 Issue 5 Pages 33-34
    Published: January 20, 1986
    Released: April 30, 2010
    JOURNALS FREE ACCESS
    Download PDF (331K)
feedback
Top