Equilibrium Between Pollutant Load and Self-purification in Forest Ecosystem

Abstract

The purpose of this study is to investigate equilibrium between pollutant load and self-purification in forest ecosystem. The results are as follows. In the coniferous forest, the load of organic matter was 152-828 g/m²/year, and the load of holocellulose, 52~284 g/m²/year; in the oak forest, 249~1,028 g/m²/year and 44-211 g/m²/year, respectively. This result showed that the load of the oak forest was higer than that of the coniferous forest. The self-purification coefficients of organic matter and holocellulose were 0.10~0.26 and 0.17~0.42 in the coniferous forest, and 0.17~0.28 and 0.56~0.71 in the oak forest. The self-purification coefficient of holocellulose was higher than that of organic matter in both forests, and the value of organic matter and holocellulose in the oak forest was about two times in coniferous forest. Filter papers buried in the humus layer of Rigida forest were decomposed about two times faster than Pinus rigida leaves. The self-purification coefficients decreased as the altitude and latitude increase, and they were high in the south and the south-east and lowest in the north