Search

Due to the land degradation, the land use conflicts have intensified, and there is an increasing necessity to adapt sustainable land management. Sustainable land management deals with the demands for land in terms of not only human society but also the nature conservation and biodiversity. To persue and realize sustainable land management, the indicators and evaluation system are necessary, and ecosystem services has emerged as the proper indicator for sustainable land management. This study focused on the balance between the demand and supply of ecosystem services. If the balance between them was maintained or supply exceeded demand, the land can be assessed to be managed sustainably. In this study, CO2 sequestration, Heat mitigation, and water provision were assessed as ecosystem service in South Korea. The supply of each ecosystem service was evaluated by using related models which had been developed and used widely in previous studies. The demand of each ecosystem service was defined based on specific figures which had already suggested as policy goals in South Kroea in purpose of drawing social consensus. Afterwards, the ecosystem services supply and demand ratio (ESDR) were calculated to show the balance between supply and demand quantified by region. As a result, the exessive demand for CO2 sequestration service was found compared to supply. The supply of heat mitigation service was found to be sufficient for the demand nationwide. However, in specific areas such as cities, the demand was higher than the supply. In the case of water provision service, the national demand was being met by some regional suppliers. Through these results, it is possible to find out the ecosystem services that need to be supplemented spatially and regionally, and ultimately, it is expected to support the establishment of urban space, green space, and environmental planning at the regional and national levels.

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 spatial resolution of 1 km2. The model was then applied in the scenario analysis for an understanding of how climate change affects cropland distribution. The potential high-quality cropland was found to be included in existing croplands, while the remaining were distributed around the Chu-Talas valley, the Issyk-kul area, and the Fergana valley. These potential high-quality croplands comprise grasslands (47.1%) and croplands (43.7%). In the future, the potential high-quality cropland exhibited inland trends at the periphery of original cropland category, with grassland and cropland as the primary land components. Due to climate change, potential high-quality cropland is expected to gradually reduce from the 2050s to the 2070s, exhibiting the largest reduction in potential high-quality areas for the Representative Concentration Pathway 8.5 scenario. Therefore, the short- and long-term adaptation strategies are needed for prioritizing the croplands to ensure food security and agricultural resilience.

The purpose of this study is to investigate the cause of increasing dry zones through analyzing relationships between land cover and Vegetation Temperature 2014년 2월 14일 접수 Received on February 14, 2014 / 2014년 6월 9일 수정 Revised on June 9, 2014 / 2014년 6월 26일 심사완료 Accepted on June 26, 2014 * 본 연구는 산림청‘산림과학기술개발사업(과제번호:S211214L030320)’의 지원을 받아 수행되었음(건조지 사막화 방지 연구사업단). 1 국립산림과학원 산림수토보전과 Dept. Forest Soil & Water Conservation. Korea Forest Research Institute 2 고려대학교 환경생태공학과 Dept. Environmental Science and Ecological Engineering, Korea University 3 동국대학교 산림자원학과 Dept. Biological and Environmental Science, Dongguk University ※ Corresponding Author E-mail : leewk@korea.ac.kr 미얀마 건조지 토지피복 변화와 식생온도조건지수간의 관계분석 / 최솔이 · 이우균 · Hangnan YU · 강호덕 · 김용석 83 Condition Index(VTCI) using Landsat 4-5 TM satellite images in Central Dry Zones of Myanmar. As a result of land cover classifications, while vegetation areas gradually decrease, residential area and cropland were increased. VTCI analysis shows that region (a) showed a gradual decrease in the area of severely arid, and increase in the area of moderate dry and wet, which sums up to a slight decrease in aridity. Region (b) also showed to increase in dry areas and severe aridity. The result of relational analysis between VTCI and land cover change showed high ratio of land cover change, from severe arid area to forest and residential farmland. The average VTCI decreased in the changed land covers, which indicates the relationship between aridity and land cover change and a gradual increase in the arid area was identified.

The main purpose of this study is to measure spatio-temporal variation of forest tree volume based on the RCP(Representative Concentration Pathway) 8.5 scenario, targeting on Pinus densiflora forests which is the main tree species in South Korea. To estimate nationwide scale, 5 th forest type map and National Forest Inventory data were used. Also, to reflect the impact of change in place and climate on growth of forest trees, growth model reflecting the climate and topography features were applied. The result of the model validation, which compared the result of the model with the forest statistics of different cities and provinces, showed a high suitability. Considering the continuous climate change, volume of Pinus densiflora forest is predicted to increase from 131 m 3 /ha at present to 212.42 m 3 /ha in the year of 2050. If the climate maintains as the present, volume is predicted to increase to 221.92 m 3 /ha. With the climate change, it is predicted that most of the region, except for some of the alpine region, will have a decrease in growth rate of Pinus densiflora forest. The growth rate of Pinus densiflora forest will have a greater decline, especially in the coastal area and the southern area. With the result of this study, it will be possible to quantify the effect of climate change on the growth of Pinus densiflora forest according to spatio-temporal is possible. The result of the study can be useful in establishing the forest management practices, considering the adaptation of climate change.

Desertification monitoring as a main portion for understand desertification, have been conducted by many scientists. However, the stage of research remains still in the level of comparison of the past and current situation. In other words, monitoring need to focus on finding methods of how to take precautions against desertification. In this study, Vegetation Temperature Condition Index (VTCI), derived from Normalized Difference Vegetation Index (NDVI) and Land Surface Temperature (LST), was utilized to observe the distribution change of vegetation. The index can be used to monitor drought occurrences at a regional level for a special period of a year, and it can also be used to study the spatial distribution of drought within the region. Techniques of remote sensing and Geographic Information System (GIS) were combined to detect the distribution change of vegetation with VTCI. As a result, assuming that the moisture condition is the only main factor that affects desertification, we found that the distribution of vegetation in Bulgan, Mongolia could be predicted in a certain degree, using VTCI. Although desertification is a complicated process and many factors could affect the result. This study is helpful to provide a strategic guidance for combating desertification and allocating the use of the labor force.

There are only a few reports of severe mesh-related complications, and major bowel complications after totally extraperitoneal (TEP) hernioplasty are also rare. A 75-year-old male patient, who had undergone TEP hernioplasty for a left inguinal hernia 2 months previously, presented with a left inguinal swelling that was found to be due to sigmoid colon-related mesh complications following TEP hernioplasty. Infection is an accepted complication of hernia operation; however, it may be more serious following laparoscopic techniques. Successful TEP hernioplasty requires adequate dissection and complete exposure and coverage of all potential sites that cause inguinal hernia. If infection and suppuration are resistant to conservative methods or occur in the early postoperative period, aggressive imaging study and treatment provides definitive treatment and reduces the burden of complications.