林土의 有機物의 分解速度와 無機養料의 垂直分布에 關한 考察 = Decomposition Rate of Plant Residue and the Vertical Distribution of Mineral Nutrients in the Woodland Soil

다국어 초록 (Multilingual Abstract)

Kim Choon Min, Chang Nam Kee and Chung Whan Ho:
Decomposition rate of plant residue and the vertical distibution of mineral nutrients in the woodland soil.
The relationship between decomposition rate of litter and the amount of mineral nutrients dispersed to the soil horizons were studied on the oak and pine forest stand. The results are as follows:
1. Decomposition rate of litter was highest in the F horizon of the oak stand, however in the pine stand it was highest in H horizon.
2. The correlation coefficients between decomposition rate and humus, organic carbon, moisture content, calcium, phosphorus, and nitrogen in the pine stand are; 0.90, 0.98, 0.76, 0.98, and 0.88, in oak stand; 0.97, 0.93, 0.92, 0.97, 0.74 and 0.73.
3. Factors which affect the decomposition rate of litter are humus, organic carbon, moisture content, calcium, phosphorus and nitrogen.
4. Among the variables, PH, moisture content and phosphorus under the oak and pine forest showed significant differences in each horizon.
5. C/N ratio of pine stands is higher than that of oak stands studied.
6. The vertical distribution of mineral nutrients is highly related with the amount of humus accumulated on top soil.