• 인간식물환경학회지
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• 제22권5호
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• pp.481-488
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• 2019

The purpose of this study is to suggest how to manage healing forests. Field investigation and surveys were conducted to produce results and 313 questionnaires collected from workers in the forestry sector and ordinary people were analyzed. The results were as follows: it is required to preserve flowering plants, scenic trees, and ecological trees in the understory vegetation, and to remove trees that block the forest landscape, leaving about 50 to 60 percent of the understory vegetation. The preferred density order of broadleaf trees was analyzed as follows: Betula platyphylla > Liriodendron tulipifera > Quercus acutissima. The preferred density order of coniferous trees was analyzed as follows: Abies holophylla > Cryptomerias japonica and Chameacyparis obtusa > Larix kaempferi > Pinus densiflora > Pinus koraiensis. The preferred density in healing forests was 81-89% compared to the number of residual trees for quantitative thinning. Specifically, the preferred density were 87% for P. koraiensis, 86% for L. kaempferi, 81% for P. densiflora, 83% for C. japonica, 84% for C. obtusa and 89% for Q. acutissima. In the case of healing forests, it is recommended to periodically conduct a small-scale thinning with different densities according to the species and diameter of trees based on the results of this study.

• 한국산림과학회지
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• 제82권1호
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• pp.1-6
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• 1993

본(本) 연구(硏究)는 밤 생산농가(生産農家)의 경영실태분석(經營實態分析)을 통(通)하여 산촌주민(山村住民)의 소득향상(所得向上)에의 기여(寄與)와 정책수립(政策樹立)을 위한 기초자료(基礎資料)의 제공(提供)에 그 목적(目的)이 있으며 밤 생산농가(生産農家) 145호(戶)를 대상(對象)으로 경영실태(經營實態)를 분석(分析)한 결과(結果)는 다음과 같다. 1. 산림부산물(山林副産物)의 생산(生産)이 농가경제(農家經濟)에서 차지하는 비중(比重)은 대단치 않으나 상대적(相對的)으로 소득수준(所得水準)이 낮은 산촌주민(山村住民)들의 소득원(所得源)이라는 점(點)에서 중요성(重要性)을 갖는다. 2. 경영규모별(經營規模別) 면적(面積)은 0.5-1.0ha미만(未滿)의 밤나무림(林)이 50.0%, 1.0-3.0ha미만(未滿)의 밤나무림(林)이 40.3%로서 전체(全體)의 90.3%를 차지하고 있어 이러한 경영규모(經營規模)의 영세성(零細性)은 경영정상화(經營正常化)와 합리화(合理化)를 이루지 못하는 주요인(主要因)이 되므로 규모(規模)의 경제성(經濟性)을 이룩해야 한다. 3. 밤나무림(林) 경영(經營)에 대한 애로사항(隘路事項)은 노동력(勞動力) 부족(不足)(38.5%), 병충해구제(病蟲害驅除)의 어려움(24.8%), 낮은 경제성(經濟性)(15.2%), 관리(管理)의 어려움(11.7%), 입지조건불량(立地條件不良)(5.9%), 기술습득(技術習得)의 어려움 (3.8%)의 순(順)으로 나타났다. 4. 저장시설(貯藏施設)에 대(對)해서는 조사농가(調査農家)의 87.6%가 필요성(必要性)을 인식(認識)하고 있었으나, 조사농가의 12.4%만이 저장시설(貯藏施設)을 보유(保有)하고 있는 것으로 나타나, 농가(農家)가 투자(投資)하기 어려운 저온저장시설(低溫貯藏施設)을 산림조합(山林組合)에서 투자(投資)하여 생산자(生産者)의 수취가격(收取價格)을 올릴 수 있도록 해야한다.

• 상하수도학회지
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• 제25권4호
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• pp.535-546
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• 2011

The study area investigated in this research is Hwaseong city, Gyeonggi-Do where small scale development is currently in progress. For the last three years, we carried out the environmental and ecological assessment by using data from The Ministry of Environment and Han River Basin Environmental Office. Most of development works in Hwaseong city, Gyeonggi-Do are small scale developments which are related with factory and distribution complex based on individual laws and regulations. However, environmental and ecological assessment is not being sufficiently reflected beforehand. Especially, because the development takes place mainly in the outskirts of the city, the fine forest is continuously being damaged. We analyzed changes in green zone area caused by the developments. As a result, the percentage of original green zone was decreasing while the percentage of artificial green zone was increasing. We should maintain the percentage of the original green zone in order to conserve natural environment. In the past three years, the damage of the DGN (Degree of Green Naturality) 7 area that has high conservative value was little, but, there was serious damage in the area of DGN 6. In order to conserve natural environment, political and institutional investigation should be seriously carried out for mitigation of environmental and ecological damages.

• 한국산림과학회지
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• 제98권6호
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• pp.799-805
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• 2009

산림바이오매스 자원의 소규모 난방에너지 이용을 위한 시스템 구축에 있어 목재칩의 연료 활용을 목적으로 목재칩 연료 생산단계에서의 비용분석과 에너지수지를 분석을 통해 산림바이오매스 자원의 에너지 이용 가능성을 검토하였다. 집재기계와 경사도별로 구분되어진 목재칩 생산 시스템에서 1 kg의 칩을 생산하기 위해 소요되는 총 생산비용은 195.45~210.54원/kg으로 산출되었으며, 에너지 투입률(%)분석에서는 26.58~27.38%의 에너지 투입률을 나타내었다. 경사도에 따른 에너지 투입률의 변화는 크지 않았으며, 생산비용의 경우와는 달리 타워야더 시스템인 시나리오 B가 트랙터 집재 시스템인 시나리오 A보다 에너지 투입률이 낮은 것으로 나타났다.

• 한국환경복원기술학회지
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• 제13권5호
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• pp.146-153
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• 2010

Urban development typically results in many species being confined to small, isolated and degraded habitat fragments. Fragment size and isolation underpin many studies of modified landscape to prevent biodiversity loss. However, habitat characteristics such as vegetation structure and edge effects are less frequently incorporated in planning. The relative influence of biogeographic (e.g. size, isolation) and vegetation parameters on assemblages is poorly understood, but critical for conservation management. In this study, the relative importance of biogeographic and vegetation parameters in explaining the diversity of forest-interior dwelling birds in forest fragments in Chungcheong Province Area. Fragment size and vegetation characteristics were consistently important predictors of bird diversity. Forestinterior bird richness was influenced by fragment size (0.437), wood age (0.332), wood diameter (0.068), and patch shape (-0.079). To preserve bird diversity of Chungcheong Province Area, it is important to consider differing responses of bird diversity to landscape change, move beyond a focus primarily on spatial attributes (size, isolation) to recognize that landscape change also has profound effects on habitat composition and quality. The result is very useful for long-term aspect of biodiversity conservation plan in regional scale.

• 한국산림과학회지
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• 제103권2호
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• pp.278-286
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• 2014

우리나라 산림의 소규모 분산적 임업경영 여건 개선과 산주의 고령화, 부재산주 증가 등으로 인한 임업경영의 문제점을 개선하기 위한 방안으로 산림의 매매, 임대차 등을 통해 임업경영 규모의 확대와 방치된 산림의 효율적인 경영관리와 산림을 담보로 한 임업인 노후생활 안정지원을 위해 산지은행제도 도입이 필요한 시점이다. 따라서 본 연구에서는 산지은행제도의 도입 타당성 및 수요 등을 파악하기 위해 산주, 비산주 및 귀농 귀촌인을 대상으로 산지은행제도 도입의 필요성, 기대효과, 이용의향, 도입방안 등에 대한 설문조사를 실시하였다. 소재산주 262명, 부재산주 152명, 비산주 427명, 귀농 귀촌인 101명을 대상으로 한 설문조사 결과, 산지은행제도 도입이 필요하다고 응답한 비율이 산주 77.5%, 비산주 63.8%로 나타났으며, 산주와 비산주 모두 산지은행제도에서 이용의향이 있거나 수행하기를 기대하는 사업으로 연금과 임대사업을 선호하였다. 귀농 귀촌인의 설문조사에서도 약 75%의 귀농 귀촌인들이 산지은행제도가 농산촌 생활에 도움을 줄 것으로 기대하였으며, 임차와 매수사업에 대한 사업이용 의향이 높게 나타났다. 본 연구를 통한 산지은행제도 도입의 타당성 분석결과를 바탕으로 산지은행 정책수립에 필요한 자료제공은 물론 산지은행제도의 기본방향, 주요기능, 사업종류와 범위 설정 등을 결정하는데 있어서 도움이 될 것으로 기대한다.

• 한국환경복원기술학회지
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• 제22권6호
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• pp.63-76
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• 2019

UAVs are unmanned, autonomous or remotely piloted aircraft. As UAVs become smaller, lighter and more economical, their applications continue to expand. Researches on UAVs in the field of remote sensing show development methods and purposes similar to those on satellite images, and they are widely used in studies such as 3D image composition and monitoring. In the field of environmental impact assessment(EIA), satellite information and data are mainly used. However, only low-resolution images covering long distances and large-scale data allowing for rough examination are being provided, so their uses are seriously limited. Therefore, in this paper, we construct spatial information of forest area by using unmanned aerial vehicle and seek efficient utilization and policy improvement in the field of environmental impact assessment. As a result, high-resolution images and data from UAVs can be used to identify the location status of SEIA, EIA, and small scale EIA project plans and to evaluate detailed environmental impact analysis. In addition, when provided together with infographics about Post-environmental impact investigation, it was confirmed that the possibility of periodic spatial information construction and evaluation can be used throughout the entire project contents and project post-process.In order to provide sophisticated infographics for the EIA, drone photography and GCP surveying methods were derived.The results of this study will be used as a basis for improving high-resolution monitoring and environmental impact assessment in the forest sector.

• 한국산림과학회지
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• 제87권3호
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• pp.415-421
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• 1998

본 연구는 휴양림 개발에 따른 개발 인접 지역의 주민 태도를 알아보기 위해 수행하였다. 기존 관광 영향 연구 문헌을 참조하여 20개 주민 태도 항목을 선발하였다. 본 연구를 위해 2개의 휴양림지역이 선정되었다. 1995년 휴양림 지역 인근에 거주하고 있는 204명의 지역 주민을 대상으로 직접방문조사가 실시되었다. 응답은 5 point 척도를 이용하였다. 주민 태도 분석결과 대부분의 응답자들은 현 휴양림 개발에 대해 경제적 혜택이 적고 지역 환경에 피해를 주고 있다는 부정적 시각을 갖고 있었다. 지각 태도는 응답자들의 사회 경제적 특성에 따라 유의한 차이가 있었다. 특히 휴양림 방문객으로부터의 수입 여부와 거주기간 정도에 따른 유의적 차이가 현저하였다. 본 연구결과 휴양림 개발지역은 정부가 의도하고 있는 긍정적 측면이 지각되지 못하고 있음을 보여주고 있었다. 현재 및 계획된 휴양림 개발 효과에 대한 지역 영향 연구가 수행될 필요가 있었다.

• 인간식물환경학회지
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• 제24권4호
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• pp.415-427
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• 2021

Background and objective: This study examined the changes in the cultural trend of use for green infrastructure in Seoul due to COVID-19 pandemic. Methods: The subjects of this study are 8 sites of green infrastructure selected by type: Forested green infrastructure, Watershed green infrastructure, Park green infrastructure, Walkway green infrastructure. The data used for analysis was blog posts for a total of four years from August 1, 2016 to July 31, 2020. The analysis method was conducted keyword frequency analysis, topic modeling, and related keyword analysis. Results: The results of this study are as follows. First, the number of posts on green infrastructure has increased since COVID-19, especially forested green infrastructure and watershed green infrastructure with abundant naturalness and high openness. Second, the cultural trend keywords before and after COVID-19 changed from large-scale to small-scale, community-based to individual-based activities, and nondaily to daily culture. Third, after COVID-19, topics and keywords related to coronavirus showed that the cultural trends were reflected on appreciation, activities, and dailiness based on natural resources. In sum, the interest in green infrastructure in Seoul has increased after COVID-19. Also, the change of green infrastructure represents the increased demand for experience that reflects the need and expectation for nature. Conclusion: The new trend of green Infrastructure in the pandemic era should be considered in the the individual relaxations & activities.

• 펄프종이기술
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• 제38권4호
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• pp.24-30
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• 2006

Formation which is an indicator of nonuniformity in fiber distribution is concerned with small scale variation in roughness, optical properties, print density, and so on. This study evaluated the formation of sheets which were made usning handsheet former and paper-machine with hydraulic headbox. Optical method and ${\beta}-ray$ method were used for formation test. The fiber type, freeness and basis weight of sheet were considered as variables. The formation of handsheet was affected by fiber type and freeness, and floe size distribution was influenced by basis weight. For machine made sheet, its formation seemed to be dependent on the hydraulic forces in headbox and former. When two formation test methods were compared, there was the highest relationship between optical formation index and normalized standard deviation from ${\beta}-ray$ method.