설악산국립공원 낙엽활엽수림의 탄소저장량 평가

Estimation of Carbon Storage in Three Cool-Temperate Broad-Leaved Deciduous Forests at Seoraksan National Park, Korea

설악산국립공원 산림생태계의 탄소저장량을 평가하기 위하여 외설악 저항령 지구, 내설악 백담사 지구, 남설악 점봉산지구로 나누어 대표 낙엽활엽수림 군락의 식생권과 토양권의 탄소저장량을 추정하였다. 식생권의 탄소량은 119 ~ 156 tC ha-1의 범위로 평균 약 147 tC ha-1 정도의 양을 축적하고 있다. 또한 토양권의 탄소량은 48 ~ 124 tC ha-1의 범위로 평균 약 91 tC ha-1 정도의 양을 축적하고 있다. 토양권과 식생권을 포함한 생태계 전체의 탄소저장량은 204 ~ 268 tC ha-1의 범위로 평균 약 238 tC ha-1 정도의 양을 축적하고 있다. 토양권 탄소량의 지구별 차이가 크게 나타났으며, 이 추정 값에는 고사목 탄소량의 평가가 누락되어 과소평가 되었다. 그러나 전체적으로는 다른 연구결과와 북한산국립공원 낙엽활엽수림의 결과와 비교하여도 매우 많은 양의 탄소가 저장되어 있음을 알 수 있다.

Quantifying net carbon storage by forests is a necessary step in the validation of carbon sequestration estimates and in assessing the possible role of these ecosystems in offsetting fossil fuel emissions. Cool-temperate broadleaved deciduous forests are one of dominant forest cover types in Asia monsoon climate regions. However, our understanding of how much storages carbon in these ecosystems is limited. The aim of this study was to estimation of carbon storage in three cool-temperate broad-leaved deciduous forests at Seoraksan National Park, Korea. The average biomass of trees was 147 tC ha-1 in the three stands and ranged from 119 to 167 tC ha-1. The total amount of soil organic matter at a 30-cm sampling depth in the three stands on an average was 91 tC ha-1. In addition, the total carbon pools of biomass and soil was approximately 238 tC ha-1, ranged from 204 to 268 tC ha-1. The total ecosystem carbon pools might be underestimated in this study because the amount of coarse woody debris was not included. Nevertheless, the amounts of carbon storage in three ecosystems at Seoraksan National Park, were higher than those of other studies significantly.