• Journal of Ecology and Environment
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• 제42권3호
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• pp.128-138
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• 2018

Background: This study investigated the variation of soil organic carbon in four land cover types: natural and mixed forest, cultivated land, Eucalyptus plantation and open bush land. The study was conducted in the Birr watershed of the upper Blue Nile ('Abbay') river basin. Methods: The data was subjected to a two-way of ANOVA analysis using the general linear model (GLM) procedures of SAS. Pairwise comparison method was also used to assess the mean difference of the land uses and depth levels depending on soil properties. Total of 148 soil samples were collected from two depth layers: 0-10 and 10-20 cm. Results: The results showed that overall mean soil organic carbon stock was higher under natural and mixed forest land use compared with other land use types and at all depths ($29.62{\pm}1.95Mg\;C\;ha^{-1}$), which was 36.14, 28.36, and 27.63% more than in cultivated land, open bush land, and Eucalyptus plantation, respectively. This could be due to greater inputs of vegetation and reduced decomposition of organic matter. On the other hand, the lowest soil organic carbon stock under cultivated land could be due to reduced inputs of organic matter and frequent tillage which encouraged oxidation of organic matter. Conclusions: Hence, carbon concentrations and stocks under natural and mixed forest and Eucalyptus plantation were higher than other land use types suggesting that two management strategies for improving soil conditions in the watershed: to maintain and preserve the forest in order to maintain carbon storage in the future and to recover abandoned crop land and degraded lands by establishing tree plantations to avoid overharvesting in natural forests.

• 한국산림과학회지
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• 제57권1호
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• pp.20-25
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• 1982

1965년(年)과 1980년(年)에 촬영(撮影)한 항공사진(航空寫眞)을 이용(利用)하여 대관령지역(大關嶺地域)의 산지이용상태(山地利用狀態)가 15년간(年間) 어떻게 변천(變遷)하였는가를 조사(調査)한 결과(結果) 다음과 같다. 1) 임지(林地), 경지면적(耕地面積)은 감소(減少)한 반면(反面), 초지면적(草地面積)은 3배(培) 이상(以上) 증가(增加)하였는데, 이는 대관령지역(大關嶺地域)의 입지조건(立地條件)이 목축업(牧畜業)에 적당(適當)하여 대단위(大單位) 초지(草地)가 조성(造成)된 데에 기인(起因)한다. 2) 임지(林地)가 초지(草地)나 경지(耕地)로 전환(轉換)된 것은 산지이용면(山地利用面)에서 개발효과(開發效果)가 크다고 하겠으나, 경지중(耕地中) 상당수(相當數)가 임지(林地)로 전환(轉換)된 현상(現狀)은 앞으로의 산지이용(山地利用)에 있어 고려(考慮)해야 할 점(點)이다. 3) 목축업(牧畜業)과 레저산업(産業) 등(等) 제산업(諸産業)의 발달(發達)은 이 지역발전(地域發展)에 크게 이바지하여 주댁(主宅), 축사(畜舍), 공공건물(公共建物) 등(等)이 증가(增加)하고 이 지역(地域) 상주인구(常住人口)가 증가하였다. 따라서 앞으로의 산지이용(山地利用)은 목재생산(木材生産)뿐만 아니라 국토보전(國土保全), 보건휴양(保健休養), 환경보전(環境保全) 등(等) 간접적(間接的) 효용(效用)을 증가(增加)시킬 수 있는 종합적(綜合的)이고 효율적(效率的)인 산림경영(山林經營)을 고려(考慮)하여 산지이용(山地利用) 계획(計劃)을 수립(樹立)하여야 한다.

• 대한원격탐사학회지
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• 제22권5호
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• pp.421-425
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• 2006

It can be important framework data to monitor the change of land-use pattern of river boundary in design and management of river. This study analyzed the change of land-use pattern of Gab and Yudeung River using time-series aerial images. To do this, we carried out radiation and geometric correction of image, and estimated land-use changes in inland and floodplain. As the analysis of inland, the ratio of residential, commercial, industrial, educational and public area, that is urbanized element, increases, but that of agricultural area shows a decline on the basis of 1990. Also, Minimum Distance Method, which is a kind of supervised classification method, is applied to extract water-body and sand bar layer in floodplain. As the analysis of land-use, the ratio of level-upped riverside land and water-body increases, but that of sand bar decreases. These time-series land use information can be important decision making data to evaluate the urbanization of river boundary, and especially it gives us goodness in river development project such as the composition of ecological habitat.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2004년도 Proceedings of ISRS 2004
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• pp.515-517
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• 2004

Although sustainable development of a city should in theory be based on updated spatial information like land cover/use changes, in practice there are no effective tools to get such information. However the development of satellite and sensor technologies has increased the supply of high resolution satellite data, allowing cost-effective, multi-temporal monitoring. Especially KOMPSAT-1(KOrea Multi-Purpose SATellite) acquired a large number of images of the whole Korean peninsula and covering some large cities a number of times. In this study land-use patterns and trends of Daejeon from the year 2000 to the year 2003 will be considered using land use maps which are generated by manual interpretation of multi-temporal KOMPSAT EOC imagery and to show the possibility of using high resolution satellite remote sensing data for urban analysis.

• 농촌계획
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• 제6권2호
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• pp.50-58
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• 2000

The purposes of the study were to detect and evaluate the historical land use and land cover changes on the Balan watersheds from three thematic mapper (TM) data, which were taken in 1985, 1993, and 1996. The supervised and unsupervised classification methods were adopted to classify five land cover categories: Paddy, upland, forest, residential, and water. The results indicated residential areas increased significantly during the past eleven years, Forest and paddy were converted to the urban areas. Future land cover patterns were forecasted using a Markov chain method, and the simulated land coiler change ratios presented.

• 대한원격탐사학회지
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• 제38권4호
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• pp.411-419
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• 2022

DPR Korea has been creating cropland across the country due to its chronic food shortage. Cropland was about 17.4% at the end of the 1980s, but it increased steadily to 19.6% at the end of the 1990s, 24.8% at the end of the first decade of 2000s, and 25.4% at the end of the 2010s. On the other hand, the forest land declined from about 74.8% in the late 1980s to 69.5% in the late 2010s. Urbanization is also progressing, increasing from about 1.15% at the end of the 1980s to 1.68% at the end of the 2010s. Most of the deforestation that occurred in DPR Korea was caused by conversion to cropland. These characteristics of land cover changes in DPR Korea provide useful information and implications for international and inter-Korean cooperation for DPR Korea.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.712-714
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• 2003

The modifications taking place within the alluvial plains impart a larger extent of disturbances to hydrologic systems. The objective of the present investigation is to detect the sensitivity of multi-temporal image data from Landsat TM (Thematic Mapper) for finding out the land-cover/land-use changes associated with alluvial low land. The eastern coast of Chiba Prefecture, Japan, forms a very important geographic unit owing to the existence of a unique alluvial landform. The alluvial plain occupied in the study area is widely known as 'Kujukuri Plain'. The TM images have been classified by means of maximum likelihood supervised classifier and the extent of changes has been estimated.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2006년도 추계학술발표대회 논문집
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• pp.452-455
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• 2006

The purpose of this study is to investigate tendencies on land use by grasping the characteristics of changes of use at the borders of single-detached housing area for planning single-detached housing area in the future. It is divided the borders of detached housing areas into three types, educational facility, parks and green spaces, and apartment complex, and then analyzed the characteristics of each location after a field study. It is summarized as follows. First, warehouses and vacant sites were distributed in adjacent borders near parks and green areas. Second, there were stationery and flour-based meal stores in adjacent borders near educational facilities, suitable for students' interest and motion patterns. Third, there were realty dealers, food stores, and laundries which provide the dwellers with service in adjacent borders near multi-family housing.

• 한국지역지리학회지
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• 제7권1호
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• pp.1-20
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• 2001

본 논문은 토지대장과 지적도를 이용하여 일제강점기 동안 광주의 금남로 지역을 대상으로 토지 이용의 변화, 가로형태의 변화, 토지소유의 사회적 패턴의 변화를 고찰하였다. 일제시대 광주의 대표적인 상징물인 전남도청과 광주역을 연결하는 직선 상징 축으로서 금남로는 1925년에 시작되어 1933년에 완성되었다. 금남로 지역은 밭과 논이 있었으나 1940년에 모두 대지화되었다. 광주읍성내는 일본인과 국가의 토지소유가 많았고, 읍성 밖은 한국인의 토지소유가 많았다. 금남로의 개설이 금남로 1 2 3 4 5가의 토지소유의 사회적 패턴의 변화에 큰 영향을 미치지는 못하였지만, 금남로 5가의 밭의 대지로의 전환에는 약간의 영향을 미쳤다고 할 수 있다. 금남로 지역의 토지이음의 변화에는 금남로의 개설보다는 광주의 인구증가 등 도시화에 의한 영향이 더 크게 작용하였다고 할 수 있다.

• 한국물환경학회지
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• 제27권2호
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• pp.159-166
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• 2011

The use of land cover was sharply changed during 1975~2007 in the Kyungan watershed $(561.12 km^2)$. The changes occurred over an area of more than $227.65 km^2$ during the overall period at changing rates of 1.04% per year for water area, 1.79% per year for residential area, 2.99% per year for bare area, 3.03% per year for wetland area, 3.04% per year for grass area, 0.87% per year for forest and 2.32% per year for agriculture area. Water, residential, bare and wetland areas increased, while grass, forest and agriculture areas decreased during the last 32 years. BOD concentrations of representative sites for each sub-watershed continuously increased until the early 2000s as residential area increased with the highest discharged load, but decreased after the mid 2000s except upper Kyungan watershed. Such decline appears to be associated with the planning of Total Maximum Daily Load management for Gwangju city and expansion of waste water treatment plant. It is necessary to control land use/cover changes of the upper watershed and to prepare appropriate watershed management system for improvement in river environment including water quality, stream flow and bio-diversity.