[논문]국가산림자원조사 자료를 활용한 고사목의 탄소저장량 변화: 강원도를 대상으로

문가현; 임종수

doi:10.14578/jkfs.2021.110.2.233

국가산림자원조사 자료를 활용한 고사목의 탄소저장량 변화: 강원도를 대상으로
Changes in Carbon Stocks of Coarse Woody Debris in National Forest Inventories: Focus on Gangwon Province 원문보기

한국산림과학회지 = Journal of korean society of forest science, v.110 no.2, 2021년, pp.233 - 243

문가현 (국립산림과학원 산림ICT연구센터) , 임종수 (국립산림과학원 산림ICT연구센터)

초록
AI-Helper

기후변화 영향의 심각성을 인지한 국제사회의 움직임에 발맞춰 우리 정부는 2050 탄소중립 선언을 통해 지속가능한 탄소중립 사회를 지향하고 있으며, 국가 온실가스 감축 목표의 이행을 위해 산림부문을 적극적으로 활용한 전략을 수행중이다. 특히 산림 내 고사목은 탄소저장고로서의 역할을 담당하므로 고정표본점에 대하여 모니터링이 이루어지는 국가산림자원조사(National Forest Inventory; NFI)에서 수집되는 고사목 자료를 활용하여 고사목 축적량과 고사목의 탄소저장량 변화 특성을 구명하는 것은 의의가 크다. 따라서 본 연구는 각 차수별(제5차-제7차 NFI) 고사목 자료를 활용하여 동일표 본점 내 고사목의 발생 현황 및 탄소저장량을 산출하고 시간에 따른 변화 특성을 분석하였다. 강원도 산림에서 각 차수별로 모니터링이 가능한 동일 표본점 2,021개를 분석한 결과 조사차수별 고사목 축적량(m³ ha^-1)은 제5차 및 제6차 NFI에서 각각 4.71과 4.09로 나타났으나, 제7차 NFI에서는 3.09로 감소하는 결과를 보였다. 연도별 고사목의 탄소저장량(ton C ha^-1)은 2009년 0.67, 2014년 0.64, 그리고 2019년 0.41로 분석되어, 시간의 흐름에 따른 감소추세를 나타냈다. 본 연구 결과를 기초자료로 활용하여 향후 전국 산림에 대한 고사목의 탄소저장량 추정 및 시계열적 변화 특성에 대한 지속적인 모니터링 연구가 수행될 필요가 있다.

Abstract ▼ AI-Helper

Considering worldwide efforts to mitigate repercussions of climate change, the South Korean government has declared to reach net zero by 2050 to achieve a carbon-neutral sustainable society. For full implementation of NDCs, the government has actively reflected its forestry sector into these strategies. Since coarse woody debris (CWD) in forests represents an enduring carbon storage, it is of particular significance to determine characteristics of changes in carbon stocks of CWD by utilizing data on dead trees monitored in permanent sample plots within national forest inventories (NFIs). In this study, therefore, both occurrence and carbon stocks of CWD were estimated in such plots using data on CWD from the 5th, 6th, and 7th NFIs. Subsequently, characteristics of changes in carbon stocks over time were analyzed. Based on the analysis of 2,021 plots available for monitoring in each NFI of Gangwon Province, the volume of CWD (m3 ha-1) was found to be 4.71 in the 5th NFI and 4.09 in the 6th NFI. However, the volume of CWD declined to 3.09 in the 7th NFI. Moreover, the annual carbon stocks of CWD (ton C ha-1) were estimated to be 0.67 in 2009, 0.64 in 2014, and 0.41 in 2019, showing a downward trend over time. This study provides a basis for future research to investigate long-term changes and estimate carbon stocks of CWD in South Korea forests.

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표/그림 (8)

그림 Figure 1. Sampling and plot designs for coarse woody debris (CWD) in the Korean NFI system (National Institute of Forest Science, 2011).
표 Table 1. The number of sample plots with coarse woody debris (CWD) in Gangwon Province.
$Table 3. Wood density(D) and carbon fraction (CF) of coarse woody debris (CWD) by decay class.*$ 표 Table 3. Wood density(D) and carbon fraction (CF) of coarse woody debris (CWD) by decay class.*
표 Table 2. Criteria for the classification of coarse woody debris (CWD) by decay class.*
표 Table 4. The change in the volume of coarse woody debris (CWD).
표 Table 5. Stand density and volume of coarse woody debris (CWD) by age class.
그림 Figure 2. Mean volume of coarse woody debris (CWD) by decay class.
표 Table 6. Carbon stocks of coarse woody debris (CWD) by decay class.

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