• 대한공간정보학회지
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• 제20권4호
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• pp.77-87
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• 2012

북한의 산림 파괴를 막는 동시에 남한의 탄소배출권 확보라는 측면에서 북한 지역을 UN-REDD 사업 대상지로 등록하고자 하는 논의가 지속되고 있다. 그러나 북한이라는 정치적 폐쇄성으로 인해 REDD 등록 과정에서 필요한 정보를 취득하기 어려운 것이 현실이다. 본 연구는 북한 지역을 REDD에 등록하는 과정에서 객관적 자료 확보에 대한 문제점을 극복하고자 위성영상을 활용하여 금강산에 대해 기초자료를 제시하였다. 그 결과 금강산 지역은 20년 동안 산림의 20% 이상이 훼손되었고, 산림 훼손의 원인이 대부분 농지 전용에 기인하고 있어 향후에도 지속적인 파괴가 이루어질 것으로 나타났다. 금강산 지역의 잠재적 탄소 배출 감축량은 519,000 tCO2/year-663.000 tCO2/year에 이를 것으로 나타나, 남한의 입장에서 향후 온실가스 배출감축 의무를 부담하게 될 경우, 매력적인 REDD 대상지로 확인되었으며, 정치적, 사회적 공편익을 고려할 경우 이에 대한 가치는 더 클 것으로 추정된다.

• 농업과학연구
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• 제47권4호
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• pp.1083-1096
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• 2020

Global attention to the greenhouse gas emissions from deforestation and forest degradation is increasing. There is a growing recognition of reducing emission from deforestation and forest degradation plus (REDD+) as an effective way to reduce greenhouse gas emissions in the forestry sector. The Republic of Korea is implementing REDD+ pilot projects in four Southeast Asian countries as part of its efforts to reduce greenhouse gas emissions. This study evaluates countries with the potential to become priority partner countries for Korea's REDD+ programs, using the following five criteria: The first criterion is that a country should include the forest sector and REDD+ in its national plan for reducing greenhouse gas (GHG) emissions. The second and third criteria refer to an average forest coverage rate of over 44% and a forest change rate of over - 0.1%, among the countries with forest cover of more than 10 million ha. The fourth criterion is that the country should meet the Forest Reference Emission Level requirements, one of the four elements of the Warsaw REDD+ Framework. The fifth criterion is that the country should have bilateral relations with the Republic of Korea in forestry while at the same time be a partner country for cooperation on climate change as well as a REDD+ pilot country. Based on our evaluation, we conclude that the first priority countries are Indonesia, Cambodia, and Myanmar. The second priority countries include Brazil, Ecuador, and Peru. Finally, the third priority countries are Columbia, Congo, and Mozambique. This study suggests that for the selection of priority partner countries, Korean REDD+ programs should center on existing REDD+ pilot countries.

• 인간식물환경학회지
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• 제22권6호
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• pp.563-573
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• 2019

The North Korean government conducted its first nuclear test in 2006 and more recently the sixth nuclear test on September 3, 2017. In order to identify how North Korea's nuclear tests have affected the environment, a scientific approach is required. Although North Korea's nuclear tests and their environmental destruction are not a severe threat to the environment of the Korean Peninsula at this time, identifying environmental damage and taking countermeasures in advance are essential to minimize their potential threats to the environments. The purpose of this study is to study the environmental impact of North Korea's nuclear tests using Google Earth image analysis. As a method of the study, we compare Google Earth images taken before and after each nuclear test was conducted in North Korea. To overcome limitations of the suggested comparison method, we cross-checked our results with those of previous scientific research. After the 1st-3rd nuclear tests, green spaces were found to be considerably reduced. In particular, when comparing the Google Earth images before and after the second nuclear test, some ground subsidences were observed. Such subsidences can cause tunnels on the mountainsides and cracks in rocks around the mountains, leading to the release of radioactive materials and contaminating groundwater. Besides, after the 4th-6th nuclear tests, decay and deforestation were observed not in the nuclear test sites, but in their surrounding areas. Especially after the 5th and 6th nuclear tests, the topography and the forests of the surrounding areas were severely damaged. In relation to North Korea's nuclear tests and their impact on the natural environment, we need to prepare various policy measures to reduce North Korea's environmental pollution and natural environment destruction. Those policy measures include the establishment of various cooperative governance between the Korean government, the private sector, the academia, NGOs, and international organizations.

• Spatial Information Research
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• 제22권2호
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• pp.1-9
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• 2014

UN-REDD/AR-CDM이 산림파괴로 인한 이산화탄소 배출을 줄이기 위한 중요한 제도로 국제사회에서 부상되고 있다. 북한의 산림 파괴를 막는 동시에 남한의 탄소배출권 확보라는 측면에서 북한 지역을 UN-REDD/AR-CDM 사업대상지로 등록하고자 하는 논의가 지속되고 있다. 백두산의 산림은 황폐화되어 있는 지역과 거대한 숲의 바다를 이루고 있는 지역이 혼재하고 있어 UN-REDD과 AR-CDM의 등록대상이 될 수 있는 것으로 확인된다. 따라서 본 연구의 목적은 기존의 REDD와 AR-CDM의 개별 등록방식에서 탈피하여 소유역별 탄소저장량 변화추세에 의거 UN-REDD와 AR-CDM 등록가능성을 모색하는 데 있다. 소유역별로 AR-CDM/REDD을 동시에 적용할 경우 AR-CDM 단일 방식 보다 21.9%, REDD 단일방식보다 53.2% 높은 탄소저장량을 나타내었다. 본 연구의 결과는 소유역별 탄소저장량 변화특성에 의거 UN-REDD나 AR-CDM을 선택하여 등록여부를 검토하는 과정에서 중요한 참고자료로 활용될 수 있을 것이다.

• 한국산림과학회지
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• 제111권2호
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• pp.330-344
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• 2022

전 세계 산림 면적이 여전히 감소하고 있는 가운데 산림을 포함한 육상생태계의 보전은 지구 공동체가 함께 달성해야 할 지속가능발전목표 중 하나로 이를 달성하기 위한 국제사회의 적극적인 노력이 요구된다. 공적개발원조 사업의 대상국은 전통적으로 국가이익을 고려하여 결정되었으나 최근 글로벌 규범인 지속가능발전목표가 국내의 공적개발원조 전략에 내재화됨에 따라 산림 부문 ODA 대상국 탐색이 다각적으로 이루어질 필요가 있다. 본 연구에서는 산림 파괴가 심한 개도국을 대상으로 기후변화 대응, 생물다양성 보전, 사막화 방지 측면에서 국가의 경제·사회·환경 부문의 이행 준비 및 필요성을 분석하여 '그린 ODA'에 충족될 수 있는 협력 대상국을 제시하였다. 본 연구의 결과는 기존의 산림 협력이 중점적으로 이루어진 아시아 국가에서 나아가 남아메리카와 아프리카 국가로 산림 협력의 확대가 필요한 것으로 나타났다. 또한 식량·에너지·수자원·산불 등 산림 전용요인의 근본적인 해결을 위하여 녹색기술과의 융·복합을 추진하고 사업 활동과 재원, 참여자의 다각화를 통해 산림분야 양자 ODA를 확대하는 방안을 제시하였다. 본 연구는 산림 부문 양자 협력 대상국 범위를 확대하는데 있어 산림 파괴가 진행 중인 전 세계 국가를 대상으로 장기적인 전략 수립을 위한 기초 정보를 제공하는데 기여할 수 있다.

• Journal of Forest and Environmental Science
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• 제28권3호
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• pp.152-157
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• 2012

Sarawak is the largest state in Malaysia that covers 37.5% of the total land area. Multitemporal satellite images of Landsat and SPOT were used to examine deforestation and forest fragmentation in Sarawak between 1990 and 2009. Supervised classification with maximum likelihood classifier was used to classify the land cover types in Sarawak. The overall accuracies of all classifications were more than 80%. Our results showed that forests were reduced at 0.62% annually during the two decades. The peat swamp forest suffered a tremendous loss of almost 50% between 1990 and 2009 especially at coastal divisions due to intensified oil palm plantation development. Fragmentation analysis revealed the loss of about 65% of the core area of intact forest during the change period. The core area of peat swamp forest had almost completely disappeared during the two decades.

• 한국환경과학회지
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• 제5권4호
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• pp.429-440
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• 1996

A global carbon cycle model (GCCM), that incorporates interaction among the terrestrial biosphere, ocean, and atmosphere, was developed to study the carbon cycling aid global carbon budget, especially due to anthropogenic $CO_2$ emission. The model that is based on C, 13C and 14C mass balance, was calibrated with the observed $CO_2$ concentration, $\delta$13C and $\Delta$14C in the atmosphere, Δ14C in the soil, and $\Delta$14C in the ocean. Also, GCCM was constrained by the literature values of oceanic carbon uptake and CO, emissions from deforestation. Inputs (forcing functions in the model) were the C, 13C and 14C as $CO_2$ emissions from fossil fuel use, and 14C injection into the stratosphere by bomb-tests. The simulated annual carbon budget of 1980s due to anthropoRenic $CO_2$ shows that the global sources were 5.43 Gt-C/yr from fossil fuel use and 0.91 Gt-C/yr from deforestation, and the sinks were 3.29 Gt-C/yr in the atmosphere, 0.90 Gt-C/yr in the terrestrial biosphere and 2.15 Gt-C/yr in the ocean. The terrestrial biosphere is currently at zero net exchange with the atmosphere, but carbon is lost cia organic carbon runoff to the ocean. The model could be utilized for a variety of studies in $CO_2$ policy and management, climate modeling, $CO_2$ impacts, and crop models.

• 대한지리학회지
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• 제33권3호
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• pp.365-376
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• 1998

본 연구는 사면에서 식생이 제거된 후 침식지형이 발달하는 경우에 어떠한 지형인자가 영향을 줄 수 있는지를 알고자 하는 것이다. 지금까지 보고된, 사면에서 일어날 수 있는 지형형성작용에는 표면침식과 사면이동이 있으며, 본 연구 지역에서는 사면이동보다는 표면침식이 진행되었던 것으로 판명되었다. 연구지역에서 영향을 준 지형인자를 비교하기 위해서 사면의 면적과 사면의 길이, 너비, 사면의 경사, 사면의 형태, 사면의 방향 등이 지형인자로 고려되었다. 통계적인 모델링을 통하여 나타난 회귀모델은 사면의 면적과 사면의 길이, 너비가 표면 침식의 정도를 좌우하는 지형인자로 판명되었다.

• Journal of Forest and Environmental Science
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• 제33권4호
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• pp.281-294
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• 2017

Tropical forests constitute almost half of the global forest cover, account for 35% of the global net primary productivity and thereby have potential to contribute substantially to sequester atmospheric $CO_2$ and offset climate change impact. However, deforestation and degradation lead by unsustainable management of tropical forests contribute to the unprecedented species losses and limit ecosystem services including carbon sequestration. Sustainable forest management (SFM) in the tropics may tackle and rectify such deleterious impacts of anthropogenic disturbances and climatic changes. However, the existing dilemma on the definition of SFM and lack of understanding of how tropical forest sustainability can be achieved lead to increasing debate on whether climate change mitigation initiatives would be successful. We reviewed the available literature with a view to clarify the concept of sustainability and provide with a framework towards the sustainability of tropical forests for enhanced carbon stock and climate change mitigation. We argue that along with securing forest tenure and thereby reducing deforestation, application of reduced impact logging (RIL) and appropriate silvicultural system can enhance tropical forest carbon stock and help mitigate climate change.

• Geomechanics and Engineering
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• 제33권2호
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• pp.167-174
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• 2023

This study evaluated slope stability through a case study to determine the disaster risks associated with increased deforestation in structures, including schools and apartments, located in urban areas adjacent to slopes. The slope behind the ○○ High School in Gwangju, Korea, collapsed owing to heavy rain in August 2018. Historically, rainwater drained well around the slope during the rainy season. However, during the collapse, a large amount of seepage water flowed out of the slope surface and a shallow failure occurred along the saturated soil layer. To analyze the cause of the collapse, the images of the upper area of the slope, which could not be directly identified, were captured using unmanned aerial vehicles (UAVs). A digital elevation model of the slope was constructed through image analysis, making it possible to calculate the rainfall flow direction and the area, width, and length of logging areas. The change in the instability of the slope over time owing to rainfall lasting ten days before the collapse was analyzed through numerical analysis. Imaging techniques based on the UAV images were found to be effective in analyzing ground disaster risk maps in urban areas. Furthermore, the analysis was found to predict the failure before its actual occurrence.