Woo-Kyun Lee

Woo-Kyun Lee
Korea University | KU · Department of Environmental Science and Ecological Engineering

PhD

About

262
Publications
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2,899
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Publications

Publications (262)
Article
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Background Forests are atmospheric carbon sinks, whose natural growth can contribute to climate change mitigation. However, they are also affected by climate change and various other phenomena, for example, the low growth of coniferous forests currently reported globally, including in the Republic of Korea. In response to the implementation of the...
Article
There is a growing awareness of the need to integrate climate and biodiversity policies. As forests play an important role in mitigating biodiversity loss and climate change, numerous countries have established goals and are managing their forests to achieve them. However, forest management measures and land prioritization may differ depending on t...
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Carbon stored on land is discharged into rivers through water flow, which is an important mechanism for energy transfer from land to river ecosystems. The goal of this study was to identify the relationship between land cover and carbon flux mediated through precipitation. In order to clarify the general relationship, research was conducted on a ra...
Book
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Urban green spaces (UGS) improve health and environmental outcomes for urban residents by providing green areas for recreation and relaxation while supporting pollution control, biodiversity conservation, carbon sequestration and reducing heat retention. This paper analyses UGS as part of the response to COVID-19. It examines citizen perceptions ab...
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Drought is a natural disaster that occurs globally and is a main trigger of secondary environmental and socio-economic damages, such as food insecurity, land degradation, and sand-dust storms. As climate change is being accelerated by human activities and environmental changes, both the severity and uncertainties of drought are increasing. In this...
Article
Ethiopia currently faces severe land degradation and desertification and has attracted increasing attention for international restoration projects. However, selecting appropriate potential afforestation and reforestation areas is challenging because of limited geospatial assessment tools on a national scale. Therefore, the globally used MEDALUS app...
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This review paper presents the extent and magnitude of forest fires and adaptation responses to deepen our understanding of the dynamics of forest fires in the eastern Himalayan region. We used a narrative scooping review approach to narrate the present state of forest fires and resilient adaptation responses to guide the development of climate res...
Article
Abnormalities in climate in recent years have been attributed to climate change. In particular, an increase in the frequency of droughts has started to influence the way we live. There is an urgent need to study and monitor droughts to prevent severe damage. Drought monitoring research is conducted using the meteorological drought index, a compilat...
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Climate change is one of the greatest challenges in Kyrgyzstan. There have been negative spillover effects in agriculture. This study aims to assess the climate change impacts on cropland suitability in Kyrgyzstan. We used the random forest algorithm to develop a model that captures the effects of multiple climate and environment factors at a spati...
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The role of forests to sequester carbon is considered an important strategy for mitigating climate change and achieving net zero emissions. However, forests in North Korea have continued to be cleared since the 1990s due to the lack of food and energy resources. Deforestation in this country has not been accurately classified nor consistently repor...
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Biodiversity loss is progressing despite biodiversity being essential for human survival, prosperity, and well-being. Conservation, restoration, and sustainable use of the habitat, given that its change is the most prominent factor causing the deterioration of biodiversity, represents a highly effective way of securing biodiversity. Therefore, we a...
Book
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Nature-based Solutions (NBS) aim to strike a balance between human development and the conservation of nature. They simultaneously meet environmental and social challenges with actions protecting, managing, and restoring ecosystems for human well-being and biodiversity benefits. This paper focuses on the Republic of Korea's NBS practices in sustain...
Preprint
Global land degradation and urbanization are rapidly progressing during the 21st century. Herein, we assessed Spatio-temporal changes in global land cover using categorical intensity analyses from 1992 to 2018 to evaluate global land degradation and urbanization. Specifically, we evaluated the decrease, increase, and expansion processes and observe...
Article
Over the past century, the decline in biodiversity due to climate change and habitat loss has become unprecedentedly serious. Multiple drivers, including climate change, land-use/cover change, and qualitative change in habitat need to be considered in an integrated approach, which has rarely been taken, to create an effective conservation strategy....
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Understanding rainfall processes as the main driver of the hydrological cycle is important for formulating future water management strategies; however, rainfall data availability is challenging for countries such as Ethiopia. This study aims to evaluate and compare the satellite rainfall estimates (SREs) derived from tropical rainfall measuring mis...
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Hydrologic models play an indispensable role in managing the scarce water resources of a region, and in developing countries, the availability and distribution of data are challenging. This research aimed to integrate and compare the satellite rainfall products, namely, Tropical Rainfall Measuring Mission (TRMM 3B43v7) and Precipitation Estimation...
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We present a study about the integrated impact of adaptive management and climate change using spatially explicit tools at first time for assessing changes in forest ecosystem services in South Korea. The aims of this study were to (i) project potential changes among forest ecosystem services under various scenarios, (ii) assess the impact of fores...
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Global challenges including overpopulation, climate change, and income inequality have increased, and a demand for sustainability has emerged. Decision-making for sustainable development is multifaceted and interlinked, owing to the diverse interests of different stakeholders and political conflicts. Analysing a situation from all social, political...
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Constant environmental degradation and increased frequency and severity of natural disasters have been evident over the past few decades worldwide. As such, scientific tools to predict and assess risks keep being developed. Assessing disaster risk is an important task in supporting the transition to a sustainable society. However, as disasters and...
Article
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Land degradation and desertification is a great concern of arid and semiarid areas. Desertification trends in northern Ethiopia were quantified using the Normalized Difference Vegetation Index (NDVI), Topsoil Grain Size Index (TGSI), and Precipitation Concentration Index (PCI) calculated from 1990 to 2018 Landsat imagery and meteorological data fro...
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Forest spatial information is regularly established and managed as basic data for national forest planning and forest policy establishment. Among them, the grade of vegetation conservation shall be investigated and evaluated according to the value of vegetation conservation. As the collection of field data over large or remote areas is difficult, u...
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Nature-based tourism in protected areas is an easily experienced ecosystem service that humans enjoy, but it acts as tourism pressures on ecosystem. Some park managers, however, lack an understanding of the spatial distribution and ecological impact of these pressures. We analyzed the size and spatial distribution of these pressures in Korean natio...
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Rapid urbanization is changing landscapes often resulting in the degradation of ecosystem services and quality of urban life. Remote sensing and GIS tools can provide valuable information to deepen our understanding of the dynamics of these changes to better plan and build sustainable cities for the future. Using remote sensing data, socio-economic...
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Understanding the timing and variability of rainfall is crucial for the effective management of water resources in river basins dominated by rainfed agricultural practices. Our study aimed to characterize rainfall and analyze the trends in the length of wet spells (LWS) in the Upper Awash River Basin—one of the most water-stressed river basins in E...
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The threat of fine particulate matter (PM2.5) is increasing globally. Tackling this issue requires an accurate understanding of its trends and drivers. In this study, global risk regions of PM2.5 concentrations during 1998–2016 were spatiotemporally derived. Time series analysis was conducted in the spatial relationship between PM2.5 and three soci...
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This study aimed to analyze the probability of the occurrence of dry/wet spell rainfall using the Markov chain model in the Upper Awash River Basin, Ethiopia. The rainfall analysis was conducted in the short rainy (Belg) and long rainy (Kiremt) seasons on a dekadal (10–day) scale over a 30-year period. In the Belg season, continuous, three-dekad dr...
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Analysis of the correlation between vegetation greenness and climate variable trends is important in the study of vegetation greenness. Our study used Normalized Difference Vegetation Index-3rd generation data from the Advanced Very High-Resolution Radiometer - Global Inventory Modeling and Mapping Studies (AVHRR-GIMMS NDVI3g), land cover data from...
Article
Understanding the spatial and temporal changes in actual evapotranspiration (ETa) caused by different human activities is important for water management in watersensitive areas, because ETa plays a major role in regulating the availability of water on land. Thus, ETa observation is particularly important for observing land degradation in the waters...
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Central Asian countries, which are included the Mid-Latitude Region (MLR), need to develop regional adaptive strategies for reducing Sand and Dust Storm (SDS)-induced negative damages based on adequate information and data. To overcome current limitation about data and assessment approaches in this region, the macroscale verified methodologies were...
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Despite being Asia's fastest-growing economy, as of 2015, the Asian Development Bank (ADB) ranked the Philippines 33rd out of 48 countries in terms of water security. This verifies that economic development does not always lead to better provisions of basic needs. This study attempts to discover the fundamental issues that decrease water security i...
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Understanding land use and land cover changes has become a necessity in managing and monitoring natural resources and development especially urban planning. Remote sensing and geographical information systems are proven tools for assessing land use and land cover changes that help planners to advance sustainability. Our study used remote sensing an...
Article
The Aral Sea was the one of the largest lakes in the world, but almost 60,000 km² of the water body has been dried due to the over‐irrigation. It led land degradation, and the detection of areas where vegetation can be established is getting important. In this study, we aimed to find potential vegetation establishment area using remote sensed data...
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The applicability of deep learning to remote sensing is rapidly increasing in accordance with the improvement in spatiotemporal resolution of satellite images. However, unlike satellite images acquired in near-real-time over wide areas, there are limited amount of labeled data used for model training. In this article, three kinds of deep learning a...
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The velocity and impact of climate change on forest appear to be site, environment, and tree species-specific. The primary objective of this research is to assess the changes in productivity of five major temperate tree species ( Pinus densiflora , PD; Larix kaempferi , LK; Pinus koraiensis , PK; Quercus variabilis , QV; and Quercus mongolica , QM)...
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Economic assessment of forest management, including tending, thinning, and clear-cut, is essential to maximize social benefits. This study investigated the economic viability of forest management in the Republic of Korea at national scale (2017–2100) by quantitative approaches. The changes in benefits of four ecosystem services (timber production,...
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Air pollution is one of the most significant environmental hazards. The elderly, young, and poor are more vulnerable to air pollution. The risk of air pollution was assessed based on the risk framework published by the Intergovernmental Panel on Climate Change (IPCC) in terms of three aspects: hazard, exposure, and vulnerability. This study determi...
Article
The 2018 United Nations Development Programme (UNDP) report announced that deforestation in North Korea is the most extreme situation and in terms of climate change, this deforestation is a global scale issue. To respond deforestation, various study and projects are conducted based on remote sensing, but access to public data in North Korea is limi...
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Desertification is a global phenomenon caused by various processes, including climate change, vegetation processes, and human activities. The need to combat desertification is increasing in many countries. A reasonable assessment of the vulnerability or sensitivity of land cover to desertification at national scales is crucial to formulate appropri...
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This study analyzes the impact of land use/land cover (LULC) changes on the hydrology of the dry Afromontane forest landscape in northern Ethiopia. Landsat satellite images of thematic mapper (TM) (1986), TM (2001), and Operational Land Imager (OLI) (2018) were employed to assess LULC. All of the images were classified while using the maximum likel...
Article
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Forests play an important role in regulating the carbon (C) cycle. The main objective of this study was to quantify the effects of South Korean national reforestation programs on carbon budgets. We estimated the changes in C stocks and annual C sequestration in the years 1961–2014 using Korea-specific models, a forest cover map (FCM), national fore...
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This study was carried out in the southern zone of Tigray to identify and characterize traditional common agroforestry practices and understand the existing knowledge of farm households on the management of trees under different agroforestry in different agroecologies. We conducted reconnaissance and diagnostic surveys by systematically and randoml...
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The mid-latitude ecotone (MLE)—a transition zone between boreal and temperate forests, which includes the regions of Northeast Asia around 30°–60° N latitudes—delivers different ecosystem functions depending on different management activities. In this study, we assessed forest volume and net primary productivity changes in the MLE of Northeast Asia...
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The Earth Trends Modeler (ETM) is an earth observation software tool that allows for modeling environmental changes and trend analyses of earth observation data. We used Global Inventory Modeling and Mapping Studies (GIMMS)-Normalized Difference Vegetation Index-3rd generation (NDVI3g) and Climatic Research Unit Time Series (CRU-TS) for climate dat...
Book
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The paper presents key findings for developing geospatial and statistical (geo-statistical) indicators for disaster risk reduction (DRR). The paper adopted the concept of vulnerability which is composed of indicators as exposure (extreme climatic stimuli), sensitivity (environmental conditions), and adaptive capacity (socio-economic aspects) of IPC...