• 제목/요약/키워드: forest ecology

검색결과 2,194건 처리시간 0.036초

Study on the Forest Watershed Classification Method for Forest Watershed Management

  • Kim, Han Soo;Lee, Yang Ju
    • 한국환경생태학회지
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    • 제29권2호
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    • pp.236-249
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    • 2015
  • The master plan of forest land management proposes forest watershed management that considers regional characteristics in order to overcome the problem of uniform forest land management. In order to manage the forest watersheds in Gyeonggi-do, this study classified 1,823 forest watersheds in Gyeonggi-do and attempted to understand their characteristics. It conducted a factor analysis and cluster analysis from the perspective of conservation value and development pressure using forest land indicators. In terms of conservation value, three factors were drawn: the topography factor, vegetation factor and public service factor, while in terms of development pressure, three factors were drawn: the easiness of development factor, economic benefits factor and development activity factor. Using these factors, forest watersheds were divided into three clusters in terms of conservation value while they were divided into three clusters in terms of development pressure. Using the results of the cluster analysis from a conservation-development perspective, the forest watersheds were classified into nine different types, and the characteristics were identified by each type. It is judged that the factors and clusters drawn as a result of the research accurately reflect the present conditions of Gyeonggi-do, and the nine types of forest watersheds have clear characteristics according to each type, which are judged to be utilized in forest management in the future.

산불피해지 복원을 위한 바이오차 처리가 굴참나무 묘목 생육에 미치는 영향 (Effect of Biochar Treatment on the Growth Characteristics of Q. variabilis for the Restoration of Post-fire Forest Areas)

  • 정유경;김소진;김주은;배정현;강원석;이영근;박기형
    • 한국산림과학회지
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    • 제112권3호
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    • pp.290-302
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    • 2023
  • 본 연구는 산불피해지에 바이오차를 처리하여 굴참나무의 초기 생장특성 변화를 살펴보고, 임목생장에 영향을 주는 인자를 파악하는데 그 목적이 있다. 굴참나무를 식재한 지역에 바이오차 처리방법(도포, 식혈)과 처리량에 따른 효과를 정량적으로 평가하기 위해 처리구를 조성하였다. 굴참나무의 활착률은 무처리구에 비해 도포와 식혈처리구에서 20% 높게 나타났으며, 도포처리구에서는 북사면, 식혈처리구는 남사면의 활착률이 더 높게 나타났다. 바이오차 처리방법에 따른 상대생장률은 식혈처리구에서 더 높게 나타났고, 근원경 생장에서 유의한 차이를 보였다. 사면향별로는 북사면의 상대생장률이 더 높았고, 수고생장에서 유의한 것으로 나타났다. 이는 바이오차의 처리용량이나 살포방법에 따라 생장량 증진효과가 다르게 나타날 수 있음을 시사한다. 사면향이나 처리방법이 토양의 건조조건에 영향을 주어 수분함량이나 양분동태에 영향을 준 것으로 보여진다. 연구결과를 활용하여 생육목적에 맞는 바이오차의 처리기준을 제시할 수 있으며, 산림시업에 적용하여 바이오매스 증진 및 산불피해지 조기 복원의 효과적인 대안이 될 것으로 판단된다.

The effect of thinning on trade-offs in ecosystem services: the case study of a Korean pine plantation on Mt. Gari

  • Kiwoong Lee;Soon Jin Yun;Minsoo Kim;Hee Moon Yang;A Reum Kim
    • Journal of Ecology and Environment
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    • 제48권2호
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    • pp.137-143
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    • 2024
  • Background: The study was carried out to analyze the temporal changes of trade-offs (TOs) between two ecosystem services (ESs) before and after thinning in a Pinus koraiensis plantation on Mt. Gari from 2006 to 2021. As target variables, aboveground carbon (AGC) storage and species richness (SR) were chosen for regulating and supporting services. Thinning was applied from 2007 through 2008 with three treatments: 1) light thinning (LT), 2) heavy thinning (HT), and 3) control (Con). Results: Thinning influenced both AGC and SR. In 2021, AGC in the Con (111.1 t C ha-1) was significantly higher compared to the LT (82.0 t C ha-1) and HT (60.4 t C ha-1) after thinning from 2007 to 2008. Also, SR was marginally higher in the LT (94 species) than in the Con (55 species) and HT (87 species) in 2011. Relative benefits of AGC and SR showed similar trends with the obtained values. In addition, the effects of thinning on TO varied among treatments and over time, demonstrating different degrees of TO between the two ESs. In the LT, TO was 0.13 in 2006 and slightly increased to 0.2 by 2021. TO in the HT exhibited a relatively rapid increase from 0.22 in 2006 to 0.58 by 2021, while To in the Con fluctuated, rising to 0.36 in 2011 from 0.1 in 2006 and decreasing to 0.25 by 2021. Among the three treatments, the degree of TOs between the two ESs was the lowest in the LT. Conclusions: Depending on thinning intensities, the responses of ESs and the degree of TOs vary. Regarding the balance between enhancements and TOs in ESs among treatments, the LT treatment showing intermediate carbon storage, higher SR, and lower TOs will be a proper silvicultural application.

기후변화 대비 강원 지역 산림부문 현황 분석 및 취약성 평가 (Vulnerability Assessment and Analysis of Gangwon Provincial Forest Sector in Response to Climate Change)

  • 채희문;이현주;엄기증
    • Journal of Forest and Environmental Science
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    • 제28권2호
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    • pp.106-117
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    • 2012
  • In an effort to analyze the impact of climate change, Gangwon provincial forest was divided into three sectors; forest ecology, forest disaster, and forest productivity and analysis of their current status from 2000 to 2009 and vulnerability assessment by climate change has been carried in this study. In case of vulnerability assessment, except for the forest ecology, forest disaster (forest fires and forest pests) and forest productivity sectors were analyzed in current status, the year of 2020, and 2050. It turned out that vulnerability of forest fires in the field of disaster would become worse and forest pests also would make more impact even though there is some variation in different areas. In case of the vulnerability of forest productivity there would be not a big difference in the future compared with current vulnerability. Systematic research on the sensitivity index used for vulnerability assessment is necessary since vulnerability assessment result greatly depends on the use of climate exposure index and adaptive capacity index.

Effect of forest restoration treatment on Abies holophylla growth and soil condition: Focusing on the Daegwallyeong alpine pastures

  • Ju-Eun Kim;Jeong-Hyeon Bae;So-Jin Kim;Ki-Hyung Park;Namin Koo;Won-Seok Kang;YuGyeong Jung
    • 농업과학연구
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    • 제51권1호
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    • pp.25-39
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    • 2024
  • This study aimed to determine a method for restoring grasslands to forests in mountainous areas. The study was conducted in an area damaged by trampling due to construction activity and herding. Additionally, there were concerns of hindered tree growth due to the alpine region climate, characterized by the low temperatures, drying, and strong winds. Therefore, forest restoration treatments such as tillage, furrow, and shading were performed to improve growth conditions. From July 2021 to April 2023, soil temperature and moisture were monitored for each treatment plot, and changes in the initial growth and survival rate of Abies holophylla were investigated. Both soil temperature and soil moisture showed significantly higher values during the four seasons in the grassland-furrow treatment plot (p < 0.05). Compared to the grassland-control plot, the average soil temperature in winter was as high as 1.1℃, and the soil moisture in summer was as high as 20.3%. Additionally, the survival rate and relative growth rate were the largest in the grassland-furrow treatment plot. The survival rate was 87.5%, the relative growth rate in terms of height was 0.013, and the relative growth rate in terms of diameter at root collar was 0.023, indicating that furrow treatment had a positive effect on the initial survival and growth of seedlings. These results suggest that furrow treatment may be an appropriate restoration method when implementing forest restoration projects in areas where tree growth is challenged.

플럭스 관측과 기계학습 기반의 데이터 주도 기술을 활용한 남한 산림 탄소 플럭스 추정 (Estimation of Forest Carbon Fluxes in South Korea using Flux Observation and Data-driven Technology based on Machine Learning)

  • 조성식;강민석;이치이 카즈히토;김준;임종환;천정화;박찬우;김현석;최성원;이승훈;요하나 마리아 인드라와티;김종호;손승원
    • 한국농림기상학회:학술대회논문집
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    • 한국농림기상학회 2019년도 하계 학술발표초록집
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    • pp.290-291
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    • 2019
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