Composting of forest leaf litter in satoyama [countryside forests] preservation activities: Changes in chemical and biological characteristics of forest leaf litter with difference in composting years and the effects on plant growth
2010
Ichikawa, T., Tochigi Agroforestry Club, Utsunomiya (Japan) | Ichikawa, A. | Urakawa, R.
In recent years, forest leaf litter collections and composting have been carried out as maintenance activities in Satoyama, Japan. The purpose of this study is to clarify the changing of chemical and biological characteristics differences in composting year of forest leaf litter in Satoyama and the effects on plant growth. Significant differences in water content of weight, percentage by nitrogen, C/N ratio, the degree of huminification (Absorbance at 600 nm = Asub(600)) , water-soluble carbon, microbial biomass carbon, the degree of microbial activity (Absorbance at 490 nm = Asub(490)) of forest litter collections were compared with composting of one year were observed. The composting one year was not different from the composting in the following year. This study also indicated that plant growth was because of chemical fertilizer and composting the one and following year. These results showed that composting the one and following year was an effective contribution toward plant growth. In addition, it is considered that the degree of huminification (Asub(600)) and microbial activity (Asub(490)) represented compost maturity of forest leaf litter and non-inhibition of plant injures.
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