Suo - Mires and peat vol. 43 no. 3 | 1992
Japanin suot ja niiden hyväksikäyttö seka suojelu.
English title: The utilization and conservation of mires in Japan.
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Japan has approximately 200 000 ha of mires (0.5% of the total land area), and peat reserves of ca. 625 million tons. Because of the great diversity in both climatic and topographic conditions various types of mire and wetlands are found. These range from the large coastal mires in Hokkaido to the mangrove forests with surrounding limnogenic mires in subtropical regions of the Ryukyu Archipelago. The majority of Japanese mires are, however, located in regions of recent volcanic activity and on the alluvial plains of Central Honshu and northwards. Most of the lowland mires have long since been reclaimed for rice culture or have partly been buried under built-up areas. In this paper, different forms of mire utilization are outlined and 30 legally (or otherwise) protected mires in Hokkaido are briefly described.
Keywords: Hokkaido, Japan, peatlands, preservation, utilization
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Miyazawa,
University of Helsinki, Hyytiälä Forestry Field Station, SF-35500 Korkeakoski, Finland
Sähköposti:
ei.tietoa@nn.oo
Karujen rämeiden kunnostusojituskelpoisuus.
English title: Evaluation of ditch network maintenance on drained poor pine mires.
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In the southern part of Finland there are over 400 000 hectares of old drainage areas which are on very poor pine mires. This paper presents their problematic site type classification, growing stock variation and some criteria to evaluate the profitability of the ditch network maintenance.
Keywords: Classification, drainage, peatlands, profitability
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Saarinen,
The Finnish Forest Research Institute, Parkano Research Station, SF-39700 Parkano, Finland
Sähköposti:
ei.tietoa@nn.oo
- Silver, Sähköposti: ei.tietoa@nn.oo
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