Effects of Forest Eire on Herb Layer Development and Chemical Properties of Soil

산화가 초본층의 발샐 및 토양의 화학적 특성에 미친 영향

  • 박관수 (충남대학교 산림자원학과) ;
  • 이미정 (충남대학교 산림자원학과) ;
  • 송호경 (충남대학교 산림자원학과)
  • Published : 2002.08.01

Abstract

This study was carried out to estimate the effect of forest fire on herb layer development and chemical properties of soil. The forest fire was in April 2000 in Pinus rigida(softwood) and Robinia pseudoacacia(hardwood) dominant forests at Gaejoksan, Daejeon. Vegetation studies were in the two communities and herb layer development study was in July using dominance of Dierssen. The coverage of herb layer was higher in the burned area than in the unburned area in the two study communities. There was no different herb layer species number between the burned and unburned areas, but there was different herb layer species number between the two communities. Soil samples were collected at 0~10cm and 10~20cm soil depths from the unburned and burned sites after 3 days and 8 months of forest fire. There was no forest floor in burned site, but unburned site has the forest floor of 1.5cm thick. There were no significant differences in soil organic matter, total N, available P, exchangeable K, Ca, Na, and Mg, and CEC, pH in all soil depth, between unburned and burned sites after 3 days of forest fire and between burned site after 3 days and 8 months of forest fire, except in organic matter in 10~20cm soil depth in hardwood sites and in exchangeable Ca in the 10~20cm soil depth, and in Mg in the two soil depths in hardwood sites. It seems to be that forest fire had not changed the chemical soil properties in this study.

본 연구는 산화가 초본층의 발생 및 토양의 화학적 특성에 미친 영향을 조사하기 위해 2000년 4월 대전의 계족산에서 발생한 산화지를 대상으로 실시되었다. 식생조사는 곰솔우점림 (침엽수림)과 아까시나무우점림(활엽수림)에서 10m$\times$10m의 방형구를 설치하여 실시하였고, 초본층의 발생조사는 7월 21일 Dierssen의 우점도법을 적용하여 실시되었다. 초본층의 피도는 침\ulcorner활엽수지역 모두에서 산화지가 비산화지보다 높았으며, 출현종수는 산화지와 비산화지의 차이보다 침\ulcorner활엽수 간에 차이가 더 높았다 토양 시료는 비산화지, 그리고 산화지에서 산화 3일 후 그리고 산화 8개월 후에 0~10cm와 10~20cm 토양깊이에서 채취되었다. 토양 유기물층은 비산화지에서는 깊이가 약 1.5cm이었으나 산화지에서는 유기물층이 없었다. 산화 발생 3일 후 산화지와 비산화지 간의 토양 유기물, 전질소, 유기인산, 치환성 양이온함량, pH및 CEC는 유의적인 차이가 없는 것으로 나타났다. 또한 산화지에서 산화 3일 후와 약 8개월 후의 토양의 화학적 특성들은 일부를 제외하고는 유의적인 차이가 없었다.

Keywords

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