• Title/Summary/Keyword: Forest Change

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Improvement of the Environmental Conservation Value Assessment Map (ECVAM) by Complement of the Vegetation Community Stability Item (식생 군집구조 안정성 평가항목 보완을 통한 국토환경성평가지도 개선방안 연구)

  • Jeon, Seong-Woo;Song, Won-Kyong;Lee, Moung-Jin;Kang, Byung-Jin
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.13 no.2
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    • pp.114-123
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    • 2010
  • The Environmental Conservation Value Assessment Map (ECVAM) is a five grade assessment map created with nationally integrated environmental information and environmental values. The map is made through the evaluation of 67 items, including greenbelt area and bio-diversity. The ECVAM assesses the stability of the community using forest maps. However, the existing assessment method is problematic because the assessment grades are evaluated using higher than practical values; in part because it uses even-valued overlay and minimal indicator methods. This study was performed in order to suggest an integrated assessment method that could complement the stability evaluation based on existing methods. Accordingly, this study added forest type information, including whether the forest was natural or artificial, to the overlay method using forest diameter maps and forest density maps. As a result, the proposed ECVAM indicated a drastic grade change. After applying the method in South Korea, Grade I areas decreased 12.1%, from 52.6% to 40.6%, Grade II areas increased 11.9%, from 17.4% to 29.2%, and Grade III areas increased 0.2%, from 17.1% to 17.4%, respectively. From the results of the field survey, we found differences between natural forest and planted forest with regard to the number of mortality, species of shrubs, and vine cover. This means that natural forests are more stable than planted forests. This study suggests an improved assessment methodology to complement the existing EVCAM method. The results are expected to be used in environmental evaluations and forest conservation value assessments in ecology and environmental fields.

Land cover change and forest fragmentation analysis for Naypyidaw, Myanmar (미얀마 네피도 지역의 도시개발로 인한 토지피복변화 탐지 및 산림파편화 분석)

  • Kong, In-Hye;Baek, Gyoung-Hye;Lee, Dong-Kun
    • Journal of Environmental Impact Assessment
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    • v.22 no.2
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    • pp.147-156
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    • 2013
  • Myanmar(Burma) has been preserved valuable environmental resources because of its political isolation. But recently, Myanmar has moved a capital city(Naypyidaw) at central forest area and it has been urbanized radically since 2005. In this paper, we built multi-temporal land cover map from Landsat images of 1970s to 2012 with ENVI 4.5 software. For a broad approach, administrative district Yamethin which includes Naypyidaw is classified into 3 classes and with only Naypyidaw region is classified with 4-5 classes to analyse specific changes. And with forest cover extracted by Object Oriented Classification, we evaluated forest fragmentation before and after the development using Patch Analyst(FRAGSTATs 3.3) at Yamethin area. For Yamethin area, there were significant forest cover change, 51% in 1999 to 48% in 2012, and for Naypyidaw area, 67% in 1999 to 57% in 2012 respectively. Also landscape indices resulted from Patch Analyst concluded that the total edge, edge density and mean shaped index of forest patches increased and total core area is decreased. It is attributed from land cover change with urbanization and agricultural land expansion.

A Study on the Effects of Children's Forest Experience Activities on Parent-Child Relationship and Child Attitude Change (유아의 숲체험 활동이 부모와 자녀의 상호 관계 및 태도변화에 미치는 영향)

  • Kang, Young-Sik
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.19 no.2
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    • pp.413-421
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    • 2018
  • This study is intended to look into the effects of children's forest experience activities on parent-child relationship and child attitude change. To achieve this, a survey was empirically carried out to 185 children. The results were as follows. First, the normality of parent-child relationship before and after forest experience activities showed that the parent-child relationship increased from 3.229 points before participation in forest experience activities to 3.841 points after participation in forest experience activities on average. And the child attitude increased from 3.226 points before participation in forest experience activities to 3.765 points after participation in forest experience activities, which there was a change of mean value before and after forest experience activities in both concepts. Second, the difference in parent-child relationship and child attitude change before and after forest experience activities showed that both parent-child relationship(Z=-10.98, p<.001) and child attitude(Z=-11.05, p<.001) did have significant differences before and after forest experience activities in the significant level of .05. As for the above-mentioned findings, children's forest experience activities improves the parent-child relationship and changes their behaviors outside the kindergarten. Consequently, nature-friendly forest experience education can provide emotional stability for children and help them build a positive rapport between teacher, parent and peer.

Recalculation of Forest Growing Stock for National Greenhouse Gas Inventory (국가 온실가스 통계 산정을 위한 임목축적 재계산)

  • Lee, Sun Jeoung;Yim, Jong-Su;Son, Yeong Mo;Kim, Raehyun
    • Journal of Climate Change Research
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    • v.7 no.4
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    • pp.485-492
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    • 2016
  • For reporting national greenhouse gas inventory in forest sector, the forest growing stock from the National Forest Inventory (NFI) system has used as activity data sources. The National Forest Inventory system was changed from rotation system by province to annual system by 5 years across the country. The forest growing stocks based on the new inventory system produced a different trend compared to the previous estimations. This study was implemented to recalculate previous forest growing stocks for time series consistency at a national level. The recalculation of forest growing stock was conducted in an overlap approach by the IPCC guideline. In order to support the more consistency data, we used calibration factors between applied stand volumes in 1985 and 2012, respectively. As a result, the time series of recalculated forest growing stock was to be consistency using the overlap approach and the calibration factor with the lower middle/middle site index. According to the applied overlap period, however, we will recalculate activity data using more complete data from national forest inventory system.

Predicting the Effect of Climate Change on Forest Biomass by Different Ecoprovinces and Forest Types in Korea (기후변화에 따른 생태권역별·임상별 산림 바이오매스 변화량 예측)

  • Shin, Jin Young;Won, Myoung Soo;Kim, Kyongha;Shin, Man Yong
    • Korean Journal of Agricultural and Forest Meteorology
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    • v.15 no.3
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    • pp.119-129
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    • 2013
  • This study was conducted to predict the changes in forest biomass in different ecoprovinces and forest types under climate change scenario based on cumulative data (i.e., digital forest site and climate maps, National Forest Inventory data) and various prediction models. The results from this study showed that predicted changes over time in biomass varied according to ecoprovince and forest type in Korea. A reduction in biomass was predicted for all forest types associated with the mountain, southeastern hilly, and southwestern hilly ecoprovinces. On the other hand, the biomass was predicted to increase for the coniferous forest and mixed-forest types in the central hilly ecoprovince. Furthermore, increases in biomass are predicted for all forest types, except coniferous forests, in the coastal ecoprovince. The results from this study provide a basis for developing technology to predict forest impacts due to climate change by predicting changes in forest biomass based on the estimation of site index.

Development of FAPIS(Forest Aerial Photograph Interpretation System) for Digital Forest Cover Type Mapping(Version 1.0) (수치임상도 제작을 위한 산림항공사진 영상판독시스템 개발(Version 1.0))

  • You, Byung-Oh;Kim, Chong-Chan;Kim, Sung-Ho
    • Journal of the Korean Association of Geographic Information Studies
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    • v.14 no.2
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    • pp.128-137
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    • 2011
  • The purpose of the FAPIS(Forest Aerial Photograph Interpretation System) development is to increase accuracy and efficiency of the digital forest cover type mapping for improving conventional analog-based mapping procedures by optimizing work-flow and mapping technology. The database models including digital forest cover type map, aerial photograph, and topographic map were designed for use in this system construction. The interface configured concisely to connect with functions such as search engine, display control, conversion to stereo interpretation mode, modification tools, automation of print layout and database models. It is expected that the standardization methodology based on this system can be applied and extended in making all kinds of digital thematic maps, providing decision-making and information of forest resources.