Abstract
A preliminary experiment using storage-type rain gauges was conducted to assess changes in the interception loss ratio of Cryptomeria japonica foliage growing on logging residues after thinning. The interception loss ratio increased as the amount of C. japonica foliage increased. The interception loss ratio (%) was calculated with rainfall as a variable. When the amount of dry foliage in the area of feeding into the storage-type rain gauge was 10 t ha-1 and 20 t ha-1, the interception loss ratios were estimated respectively as 2.7 % and 5.4 %. Results suggest that it is important to elucidate the effects on the interception loss ratio of C. japonica foliage growing on logging residues.
