(1) After two growing seasons, the nusmber of individuals in the trenched quadrats were greater than those in the controlled quadrats. And so were the number of species. (2) The number of individuals had increased in two growing seasons in all the quadrats, and so has the number of species except Plot Nos. 5-T, 4-C, and 2-C. (3) Point density may be associated with the increase in the number of individuals, e.g., the lower the point density, the greater the numbers of individuals and species may become. (4) The vegetatio in the trenched quadrat was larger, darker and thriftier in all instances than in the controlled. Therefore, the following can be concluded ; 1. Trenching has increased the number of individuals as well as the number of species regardless of stand composition in two growing seasons. 2. The effect of thinning in 1964 in increasing soil moisture has been apparent. 3. The effect of trenching may have been accelerated by lower point density. 4. There may be competition among species within a quadrat.