渓流・渓畔林及び砂防施設周辺におけるマイナス荷電粒子(負の空気イオン)の分布特性に関する事例的研究

The healthy environment is desirable for the visitors of the forests along torrents and Sabo facilities. Among the healthy factors concerning torrents, the negative ion is the most popular one today. In this point of view, the distribution of the negative ion was scrutinized here. The negative ion c... View More