• Title/Summary/Keyword: Land Problems

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An Adjustment for a Regional Incongruity in Global land Cover Map: case of Korea

  • Park Youn-Young;Han Kyung-Soo;Yeom Jong-Min;Suh Yong-Cheol
    • Korean Journal of Remote Sensing
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    • v.22 no.3
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    • pp.199-209
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    • 2006
  • The Global Land Cover 2000 (GLC 200) project, as a most recent issue, is to provide for the year 2000 a harmonized land cover database over the whole globe. The classifications were performed according to continental or regional scales by corresponding organization using the data of VEGETATION sensor onboard the SPOT4 Satellite. Even if the global land cover classification for Asia provided by Chiba University showed a good accuracy in whole Asian area, some problems were detected in Korean region. Therefore, the construction of new land cover database over Korea is strongly required using more recent data set. The present study focuses on the development of a new upgraded land cover map at 1 km resolution over Korea considering the widely used K-means clustering, which is one of unsupervised classification technique using distance function for land surface pattern classification, and the principal components transformation. It is based on data sets from the Earth observing system SPOT4/VEGETATION. Newly classified land cover was compared with GLC 2000 for Korean peninsula to access how well classification performed using confusion matrix.

A Study on the Problem and Improvement Plan of Management of Public Land Parcels (국공유지 필지 관리의 문제점 및 개선 방안)

  • Kim, Jin;Jung, Young-Jin;Kim, Jun-Ho;Lee, Hyun-Joon;Hong, Sung-Eon
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.1
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    • pp.136-145
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    • 2015
  • This study analyzes the status and problems of current parcel management in the public land, and it suggests measures for improvement based on the analysis. For this, it looked into the status and problems of the public land's parcel management. One of the major problems was that the number of parcels was continuously increasing due to insufficient parcel management. The study found that the number was increasing every year by 128,520 parcels on average as of 2008. It also found that there was also non-coincidence between the status and the land use conditions in the cadastral records. An increasing set of minute parcels (minute polygon) has appeared because of these outstanding issues, and these errors have been included in the statistics survey on parcels, negatively influencing the credibility of the data. This study suggests ways to improve these issues including reduction in the number of parcels through annexation, enhancement of credibility of cadastral information through cadastral confirmation survey, and registration and management of public land parcels in consideration of the current status.

Improvement of Land Cover / Land Use Classification by Combination of Optical and Microwave Remote Sensing Data

  • Duong, Nguyen Dinh
    • Proceedings of the KSRS Conference
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    • 2003.11a
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    • pp.426-428
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    • 2003
  • Optical and microwave remote sensing data have been widely used in land cover and land use classification. Thanks to the spectral absorption characteristics of ground object in visible and near infrared region, optical data enables to extract different land cover types according to their material composition like water body, vegetation cover or bare land. On the other hand, microwave sensor receives backscatter radiance which contains information on surface roughness, object density and their 3-D structure that are very important complementary information to interpret land use and land cover. Separate use of these data have brought many successful results in practice. However, the accuracy of the land use / land cover established by this methodology still has some problems. One of the way to improve accuracy of the land use / land cover classification is just combination of both optical and microwave data in analysis. In this paper for the research, the author used LANDSAT TM scene 127/45 acquired on October 21, 1992, JERS-1 SAR scene 119/265 acquired on October 27, 1992 and aerial photographs taken on October 21, 1992. The study area has been selected in Hanoi City and surrounding area, Vietnam. This is a flat agricultural area with various land use types as water rice, secondary crops like maize, cassava, vegetables cultivation as cucumber, tomato etc. mixed with human settlement and some manufacture facilities as brick and ceramic factories. The use of only optical or microwave data could result in misclassification among some land use features as settlement and vegetables cultivation using frame stages. By combination of multitemporal JERS-1 SAR and TM data these errors have been eliminated so that accuracy of the final land use / land cover map has been improved. The paper describes a methodology for data combination and presents results achieved by the proposed approach.

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A Issue of Semi-agricultural Zones Management and Countermeasure in City Planning (도시계획에 있어서 준농림지 성장관리의 문제점과 대책)

  • Lim, Myung-Gu
    • Journal of The Korean Digital Architecture Interior Association
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    • v.7 no.2
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    • pp.25-32
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    • 2007
  • Cities should be developed and managed deliberately since reckless development and selfish expansion deteriorate the quality of life in the cities by creating various problems in transportation, residence and environment. In particular, the semi-agricultural zones have been designated in order to address such problems as the overpopulation caused by the influx of people into the cities and promote balanced regional development and eco-friendly cultivation of the land across the nation. But the problems of metropolitan areas, such as the overpopulation and lack of infrastructure, are spreading even to the semi-agricultural zones, which should be the last areas to be developed into cities. We should blame the indolence of our policies on land first, rather than the selfish cities that slip from the grip of the law. This study concludes that the self-agricultural zones should be developed and managed with plans by the public sector rather than the autonomous development by the private sector.

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Physical processes related to coastal water quality problems

  • Takeoka, Hidetaka
    • Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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    • 1996.10a
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    • pp.60-63
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    • 1996
  • Industrialization and urbanization of coastal areas in recent years have brought about a lot of coastal marine environmental problems. Water quality problems such as eutrophication or pollution by toxic chemicals are especially serious, threatening coastal ecosystems. These problems are mainly induced by anthropogenic loads of materials from the land. In order to design suitable counter measures, we should well understand the processes causing the problems. (omitted)

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A Study on the Strategies for Land Information System Development (토지관련 업무의 정보화 추진방안에 관한 연구)

  • 고준환
    • Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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    • v.20 no.1
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    • pp.93-101
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    • 2002
  • By the rapid development of computer technology and the more efficient use of land-related information, Land-related Information System has been developed by the central and local government respectively. The problems of the storage, maintenance and exchange of land-related data will be anticipated. The purpose of this study is to meet the demands of governments and prevent the duplicate investment for the information system. The data sharing and standardization should be achieved for the more efficient land management. The theme of UN's sustainable land management and the future vision of cadastre according to Cadastre 2014 are thoroughly reviewed. The advanced foreign cases of LIS development are studied, too. Linkage among land-related data, the improvement of organizational institution and the training for GIS specialists are suggested as the strategies for the more efficient land-related information system development.

The Spatial and Social Characteristics of the Farmland Reduction Area in Urban Vicinity - Focusing on Gimhae City in Gyeongsangnamdo - (도시주변 농지감소지역의 공간 및 사회적 특성 - 경상남도 김해시를 중심으로 -)

  • Lee, Seung-Hye;Lee, Yoo-Jick
    • Journal of Korean Society of Rural Planning
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    • v.24 no.1
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    • pp.99-111
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    • 2018
  • This study was conducted for the purpose of deriving implications by observing the changing patterns and characteristics of the farmland reduction area in urban vicinity with Gimhae city, Gyeongsangnam-do as the subject. In order to achieve this goal, we first examined the problems and possibilities of farmland reduction area in urban vicinity through a theoretical review. Additionally, the characteristics of land use and community were examined for Gimhae city, Gyeongsangnam-do. The results of the study are summarized as follows. First, for 35 years from 1981 to 2015, Gimhae decreased $50.52km^2$ of farmland, which is about 17.4 times that of Yoido, and about 69.4% of the decreased farmland area. Second, the decrease in agricultural land has been expanding to the whole of Gimhae City from 1990 to 2010, and has been continuing since 2010 around dong-area. Third, in the farmland reduction area in urban vicinity, the number of settlements increases rapidly, but the aging population also increases. Fourth, the composition of the community is getting complicated with the change of the members. Taken together, it is necessary to manage the area efficiently because rapid change is present in the farmland reduction area in urban vicinity. Based on this, the implications are summarized as follows. First, there is a change in land use due to the reduction of farmland not designated as agricultural development region. Therefore, it is necessary to supplement the farmland-conversion standard. Second, despite the fact that land use management has been carried out, there have been problems such as uncontrolled development due to the development pressure beyond institutional management, and therefore it is necessary to improve the structural defects of the pertinent legal system. Fourth, while the traditional farming activities are decreasing with the decrease of agricultural land area, the increase in farms with secondary jobs and the urban-rural interchanges organization's efforts can lead to increased visits from outsiders that seek rural tourism and experiential learning.

A Study on Urban Land Use Analysis using Land Information Systems (토지정보체계를 활용한 토지이용분석에 관한 연구)

  • 이우종
    • Spatial Information Research
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    • v.2 no.2
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    • pp.117-134
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    • 1994
  • The problems of urban land use are becoming worse by the increase of population and facilities. Land use planning is the major part of comprehensive city plan¬ning. Understanding and forecasting the present and future conditions of land use are the main process of land use planning. In order to comprehend the various phenomena which occured on the land, collecting accurate land information is the most important thing for the effective management of land use. Therefore, it is necessary for us to establish the land information systems. In this study, theories of functions, objectives, components and applications of land information systems were investigated as the basis of this research. Case studies of Korea and Japan were examined, not only for the desirable selection of input data items, but also for the effective land use anslysis in land information systems. Through this kind of study, we can anslize and understand the changing patterns of land use over time, and we can also prepare a more desirable and adjustable land use plan-ning programs for the future.

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Establishment of Building Work Section of LH Guide Specifications (건축부문 LH 전문시방서 작성 방안)

  • Oh, Eun-Ho;Kim, Tae-Song;Lee, Kab-Won;Koo, Jai-Dong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2011.11a
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    • pp.177-179
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    • 2011
  • The difference the guide specifications of between housing and land development has been caused many problems, since Korea Land Corporation and Korea Housing Corporation were merged into LH (Land and Housing Corporation) in 2009. Those are that specification criteria to establishing lower level specifications are disordered; duplicated investment on sites; management systems are conflicted site to site, which are based on different operation system from old land and housing corporations, etc. Thus, this paper aims to suggest a direction of integrated guide specification system of LH including improved and advanced classification hierarchy and specification.

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A Study on the Introduction of Urban Agriculture to Permanently Rental Apartment Complexes

  • Yoon, Eun-Joo;Yoon, Young-Ho
    • Land and Housing Review
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    • v.2 no.2
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    • pp.93-99
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    • 2011
  • Urban agriculture is drawing people's attention along with environmental problems and recent changes in population and society such as the expansion of the aged, and various related discussions are going on for expanding the base. The purpose of this study was to suggest the application of urban agriculture in the permanently rental apartment complex to build a social welfare. Aiming at the introduction of urban agriculture in permanently rental apartment complexes, this study presented the roles and necessities of urban agriculture in response to environmental changes at home and overseas, explained the current state of permanently leased apartment complexes, estimated the land area usable for urban agriculture in existing complexes, and proposed strategies for the introduction of urban agriculture.