• International journal of advanced smart convergence
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• 제10권1호
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• pp.216-224
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• 2021

Aim of this research was to classify forest types at Wando in Jeonnam Province and develop warm temperate forest management system with application of Remote Sensing and GIS. Another emphasis was given to the analysis of satellite images to compare forest type changes over 10 year periods from 2009 to 2019. We have accomplished this study by using ArcGIS Pro and ENVI. For this research, Landsat satellite images were obtained by means of terrestrial, airborne and satellite imagery. Based on the field survey data, all land uses and forest types were divided into 5 forest classes; Evergreen broad-leaved forest, Evergreen Coniferous forest, Deciduous broad-leaved forest, Mixed fores, and others. Supervised classification was carried out with a random forest classifier based on manually collected training polygons in ROI. Accuracy assessment of the different forest types and land-cover classifications was calculated based on the reference polygons. Comparison of forest changes over 10 year periods resulted in different vegetation biomass volumes, producing the loss of deciduous forests in 2019 probably due to the expansion of residential areas and rapid deforestation.

• Journal of Forest and Environmental Science
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• 제37권3호
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• pp.260-268
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• 2021

This study was conducted to grasp users' preferences and behavior of forest paths and to provide basic data for forest path construction in the future. Among forest path users, males and females over 20 years old were surveyed on forest path preferences, motives for visiting, using time and distance, companions, and sources for obtaining information on forest paths. A total of 587 people participated in the questionnaire, and cross-analysis was conducted simultaneously using the SPSS statistical program. In analyzing the preference of forest paths, it was found that male and the general public preferred trekking path for activities while female and foresters preferred forest path for relaxation and healing (p<0.05). As for the motives for visiting forest paths, the response that they visited for a walk/rest was the highest in gender, occupation, and age group. As for the number of annual visits, less than 5 was the highest in overall, and foresters tended to visit forest path more often than the general public, and the number of visits to the forest paths increased with age (p<0.01). The most common route to acquire information about forest paths is the Internet, while the Internet use is relatively low in those over 60s (p<0.05). The response ratio of accompanying their family in visiting forest paths were the highest, while the response in their 20s and 60s was the most in accompanying their friends (p<0.05).

• Journal of Forest and Environmental Science
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• 제9권1호
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• pp.81-95
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• 1993

본 연구는 우리나라 국유림(國有林)의 시업계획(施業計劃)의 체계화(體系化)와 바람직한 발전방향(發展方向)의 수립에 기여하고자 일본(日本) 국유림(國有林)의 시업계획(施業計劃) 방침(方針)에 대한 사적(史的) 전개과정(展開過程)을 검토, 고찰하였다. 전전기(戰前期) 일본(日本)의 국유림(國有林) 시업(施業)은 토지순수확(土地純收穫)과 삼림순수종(森林純收種) 합앙체계(合仰體系)의 시업방침(施業方針)에 의해, 주로 작업급(作業級) 및 벌채렬구(伐採列區)를 수반한 소면적(小面積)의 개벌작업(皆伐作業)과 간이한 면적평분법(面積平分法), 그리고 절충적인 중장기(中長期)의 륜벌기(輪伐期)가 채용되어져, 법정림(法正林) 사상(思想)이 점차 정착되었다. 전후기(戰後期)에는 이전의 합경종계(合耕種系)의 시업(施業)으로부터 기업적(企業的) 경영(經營)이 전개되었다. 고도성장기(高度成長期)에는 예상성장량(豫想成長量)의 벌채(伐採)와 대면적(大面積) 개벌작업(皆伐作業)에 의해 약탈적(掠奪的) 시업(施業)이 추구됨에 따라, 본래의 시업법(施業法) 및 법정림사상(法正林思想)은 부정되었고, 그 결과 삼림(森林)의 황폐(荒廢)를 초래하였다. 저성장기(低成長期)에는 감량경영(減量經營)에 의한 방치적(放置的) 시업(施業)과 불황(不況)의 심화(深化)에 의해, 삼림자원(森林資源)의 보속생산을 곤란하게 하였다. 그러므로, 금후의 국유림(國有林) 시업(施業)은 지력(地力)을 유지(維持)하여 삼림자원(森林資源)의 재생산과 환경(環境)의 보전(保全)을 동시에 실현 할 수 있는 시업법(施業法)을 확립(確立)시켜 나가야 한다. 벌출(伐出)과 경신(更新)의 통일을 기하고, 입지조건(立地條件)에 최적(最適)한 작업법(作業法) 및 수종규정법(收種規整法)의 채택 등, 제반 조건의 종합적 고려를 통한 집약적(集約的) 시업체계(施業體系)의 확립(確立)이 필요하다. 또한, 삼림자해(森林資海)의 기능적(機能的) 특성상, 삼림(森林)에 대한 보다 적극적인 투자(投資)의 확대(擴大)가 이루어져야 한다.

• 한국산림과학회지
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• 제94권3호통권160호
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• pp.168-177
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• 2005

본 연구는 환경친화적이고 경제적인 녹색임도 건설에 기초 정책자료를 제공하고자 우리나라의 산지지형 및 산림특성을 고려하여 임도밀도를 산정하였다. 그 결과, 효율적인 산림관리 및 보호를 도모하고 공익적 기능의 고도 발휘를 위한 사회간접자본(SOC) 개념에서의 기본임도밀도는 8.57 m/ha로 나타났으며, 또한 지속가능한 산림경영 체계를 구축하기 위한 산림경영기반시설 개념에서의 적정임도밀도는 14.01 m/ha로 산출되었다.

• 농업과학연구
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• 제47권4호
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• pp.951-962
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• 2020

One hundred ninety-five countries reached agreement on a new climate treaty in Paris, France to reduce the carbon emissions. South Korea has been selected as a target country for reducing greenhouse gas (GHG) obligations since 2020. In this context, the Korean government developed several GHG emissions reduction programs using forests called the "Forest carbon offset scheme (FCOS)." The forest management method is one of the tools to implement FCOS. Most of the participants registered forest management as the preferred methodology to participate in the FCOS. For a successful implementation of the FCOS, it is necessary to explore the optimal methods by considering the cost-effective aspect of conducting the forest management as a tool to increase carbon absorption. In this context, this study investigated the value optimized FCOS projects based on the forest management methodology in South Korea. Three forest management scenarios, 1) extending the final age of maturity of Pinus densiflora stands (S1), 2) extending the final age of maturity of Quercus acutissima stands (S2), and 3) reforestation with new species (Pinus densiflora to Quercus acutissima) (S3), were examined and evaluated to identify the optimal carbon absorption and value optimized economic perspective. The results of the scenario-based modelling indicated that S3 showed value optimized from an economical perspective, and S2 was the most effective method to absorb carbon among the scenarios. It is anticipated that this paper will contribute to provide valuable information by presenting innovative approaches as a value optimized FCOS implementing tool in a GHG reduction program in South Korea.

• 한국산림과학회지
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• 제95권2호
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• pp.188-193
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• 2006

Volunteerism is an emerging issue in public resource management such as forest recreation management. As volunteers, forest interpreters play a significant role in supporting and educating visitors to forest recreation areas. The purpose of this study was to examine forest interpreters' motivation and their job satisfaction. To collect data, a set of self-administered questionnaire was sent to 250 members of Chungbuk Forest Interpreters' Association during August and September of 2005. 152 completed questionnaires were returned. Principal component factor analyses yield five motivation factors and four satisfaction factors. All the factors were highly correlated.

• 한국산림과학회지
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• 제98권3호
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• pp.247-254
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• 2009

이 연구에서는 산림과학원 광릉시험림을 사례연구 대상으로 산림기능에 따른 목표임상 조건이 산림경영에 미치는 영향을 알아보기 위하여 선형계획법을 적용하였다. 이를 위해 대상산림의 사회 경제 생태적 요구에 따라 자연환경림, 자원생산림, 수원함양림 그리고 경관보존림으로 구성된 4개의 산림기능으로 구분하고, 각 기능에 적합한 산림시업체계표를 작성하였다. 선형계획수식모형은 Model II 기법을 적용하여 구성하였으며, 재적생산의 극대화를 목적함수로 그리고 비감소수확, 벌채허용면적, 계획기간말의 영급구조 및 수종선택 등의 경영방침을 제약조건에 포함시켰다. 선형계획수식모형을 이용하여 각 경영시나리오별로 최적해를 계산하고 재적생산량, 순현재가 그리고 영급구조 등을 비교하여 목표임상 조건이 산림경영에 미치는 영향을 알아보았다.

• 한국산림과학회지
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• 제99권2호
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• pp.163-171
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• 2010

Forest fires have potentials to change the structure and function of forest ecosystems and significantly influence on atmosphere and biogeochemical cycles. Forest fire also affects the quality of public benefits such as carbon sequestration, soil fertility, grazing value, biodiversity, or tourism. The prediction of fire occurrence and its spread is critical to the forest managers for allocating resources and developing the forest fire danger rating system. Most of fires were human-caused fires in Korea, but meteorological factors are also big contributors to fire behaviors and its spread. Thus, meteorological factors as well as social factors were considered in the fire danger rating systems. A total of 298 forest fires occurred during the fall season from 2002 to 2006 in South Korea were considered for developing a logistic model of forest fire occurrence. The results of statistical analysis show that only effective humidity and temperature significantly affected the logistic models (p<0.05). The results of ROC curve analysis showed that the probability of randomly selected fires ranges from 0.739 to 0.876, which represent a relatively high accuracy of the developed model. These findings would be necessary for the policy makers in South Korea for the prevention of forest fires.

• 한국조경학회지
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• 제20권4호
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• pp.1-11
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• 1993

This study was conducted to investigate the plant community structure and to propose ecological management planning for the urban forest on Sungdongku, Joongku and Yongsanku in Seoul. Field survey was excuted October 1991 and the results were as follows. Robinia pseudoacasia community covered 61.1% and Populus x albaglandulosa covered 3.8% of survey site II and survey site was covered by the deciduous-broad leaf mixtured forest. According to the human impact and inappropriate management impact, survey area was divided into five forest community. As for the analysis of plant community structure which was classified into five forest community, the importance values, ecological diversity, number of species, number of individuals, basal area and crown coverage of the native plant community showed relatively higher than community that vegetation deterioration degree by the human impact showed seriously. In landscape forest of Mt. Daehyun, it showed problems for the planting method and the soil condition. So it was proposed to management guide, vegetation restoration and soil management through ecological management planning based on above results.

• Journal of Forest and Environmental Science
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• 제28권1호
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• pp.24-29
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• 2012

This paper assesses the stmpage value of Korean white pine (Pinus koraiensis) stands in the Research Forest of Kangwon National University. Assessment was done by means of the cost value method (Faustmann formula) for age class I, Glaser method for age class II-V, and inversion market method for age class over VI. Generally the value of stumpage is calculated by the inversion market method in the market. However, immature trees and middle age class trees are not assessed in market, and the Korean forest is not old enough to harvest. So, when forests are damaged by attacks from forest fire, blight and harmful insects, the forest cannot be compensated for the loss from the government or insurance company. For this reason, the value of all-age class trees are calculated by using appropriate methods. As a result, the value of age I class stands (0.3 ha) is calculated as 1,786,305 (won), age II-Vclass stands (22.1 ha) 206,677,975 (won) and age VI class and over stands (24.8 ha) 523,789,603 (won).