1997 Fiscal Year Final Research Report Summary
Landscape ecological study on torrent control planning in harmonizing with environment
| Project/Area Number |
07806020
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
林学
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| Research Institution | Niigata University |
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Principal Investigator |
MARUI Hideaki Niigata University, Research Institute for Hazards in Snowy Areas, Professor, 積雪地域災害研究センター, 教授 (10219545)
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| Project Period (FY) |
1995 – 1997
|
| Keywords | landscape ecology / nature-orientated torrent control / conventional torrent control engineering / destruction of continuity / monotonizing of environment / riffle-pool structures |
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| Research Abstract |
1. On the basis of "Iandscape ecology", the basic concepts of the torrent control engineering in harmonizing with nature was considered in relation with various landscape factorors.
2. Problematic aspects of conventional torrent control engineering were considered. The conventional torrent control engineering was aimed to be mitigation of destructive sediment transport. It has been neglected to control the usual dimension of sediment transport.
3. Various types of influences of conventional torrent control engineering to torrent ecosystem was considered. Main aspects of such influences are the followings : 1) destruction of continuity, 2) mitigation of disturbance, 3) release of space, 4) monotonizing of environment, 5) drastic change of environment and ecosystem.
4. Basicideas on improving conventional torrent control engineering was introduced. Sediment transport and disturbance of torrent environment should be allowed to an certain extent in torrent control engineering
5. In relation to assessment of influence of conventional torrent control engineering a complexmethod to evaluate the whole structure of torrent environment was introduced in some model watersheds.
6. Distribution of riffle-pool structures of river floors and related hy draulic conditions were analyzed in a model torrent.
7. Recent examples of torrent control engineering in harmonizing with nature in Austria ware introduced.
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Research Products
(12 results)
