Abstract
High-moor peat land has some useful function in environmental conservation involved by factors of its formation. For its conservation, it is desired to clarify water factor which plays an important part in its formation, especially water flow in peat layer. In this study, it was tried to do its flow in case of Akaiyachi high- moor peat land. The principal results are as follows. The groundwater in shallow layer of high-moor peat land flows down through the shallow layer along the gentle slope from the top of dome. Most of the rainfall flows down through the top layer of high moor peat land along the gentle slope. Most of the rainfall loss is due to the evapotranspiration of sphagna. Most of the groundwater is supplied by the cool water which springs directly from mountainous regions under the peat land to flows horizontally through the peat layer. This cool groundwater brings on decomposition control of plant remains which is indispensable for formation of peat land. In the future, for the conservation of Akaiyachi highmoor peatland, it is desired to conserve these water conditions. Also for the conservations of other high-moor peat lands, it will be pointed out to conserve almost the same water conditions as this peat land.
