• 제목/요약/키워드: forest type

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수치임상도 제작을 위한 영상탑재 현장조사 시스템 개발 (Development of the Field Investigation System (FIS) loading Image Data for Digital Forest Type Mapping)

  • 유병오;권수덕;김성호
    • 한국산림과학회지
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    • 제97권4호
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    • pp.445-451
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    • 2008
  • 본 연구는 Tablet PC를 기반으로 정밀수치임상도 제작을 위한 현장조사용 맞춤형 시스템을 개발하는데 그 목적이 있다. 본 연구에서 개발한 FIS의 주요 개발내용 및 특징은 다음과 같다. FIS는 GPS에서 수신한 정보를 바탕으로 다양한 공간 Data에서 위치정보를 쉽게 파악할 수 있어 정보의 접근성이 용이한 장점이 있다. 또한 임상편집 뿐만 아니라 메모 및 야장도구를 통해 여러 가지 정보들을 현장에서 손쉽게 기록하고 관리할 수 있으며, 간단한 측정도구로 거리와 면적을 쉽게 산출할 수 있다. 본 연구에서 개발한 시스템을 활용하여 효율적인 현장조사가 가능하므로 현장에서 시간 및 비용을 절감할 수 있으며, 현장작업의 생산력이 향상될 것이다.

개발사업에 따른 산림식생 영향평가모형 개발 및 적용 (Development and Application of Impact Assessment Model of Forest Vegetation by Land Developments)

  • 이동근;김은영
    • 한국환경복원기술학회지
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    • 제12권6호
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    • pp.123-130
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    • 2009
  • Fragmentation due to land developments causes disturbances and changes of composition in forest vegetation. The purpose of the study was to develop the impact assessment model for quantitative distance or degree of disturbance by land developments. This study conducted a survey about structure and composition of forest vegetation to determine degree of impact from land developments. The results of field survey, there was a difference in structure and composition of forest vegetation such as tree canopy, herbaceous cover, and number of vine and alien species the distances from edge to interior area such as 0m, 10m, 20m, 40m, and over 60m. To assess the disturbance of forest vegetation, the factors selected were the rate of vine's cover and appearance of alien species. The impact assessment model about vine species explained by a distance, forest patch size, type of forest fragmentation, and type of vegetation ($R^2$=0.44, p<0.001). The other model about alien species explained by a distance, type of forest fragmentation, type of vegetation, and width of road (85.9%, p<0.005). The models applied to Samsong housing development in Goyang-si, Gyunggi-do. The vines and alien species in the study area have had a substantial impact on forest vegetation from edge to 20 or 40m. The impact assessment models were high reliability for estimating impacts to land developments. The impact of forest vegetation by development activities could be minimized thorough the adoption of the models introduced at the stage of EIA.

안면도 현존식생에 대한 군락분류 (Community Classification for Actual Vegetation of Anmyeon Island in Chungcheongnam-do Province, Korea)

  • 신재권;윤충원;양희문
    • 한국환경과학회지
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    • 제18권12호
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    • pp.1427-1436
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    • 2009
  • The purpose of this study was to explain community structure for actual vegetation and their environment variables in Anmyeon Island. Samples were collected for 106 plots using ZM phytosociology method and coincidence method. Actual vegetation were classified into three vegetations types(forest vegetation type, maritime vegetation type, lake vegetation type) and eleven community units. Pourthiaea villosa community in forest vegetation type was divided into 5 groups such as Carpinus coreana group, Pinus rigida group, Chamaecyparis obtusa group, Castanea crenata group and Typical group. Maritime vegetation type was divided into 3 communities, such as Vitex rotundifolia community, Koelreuteria paniculata community and Suaeda japonica community. V. rotundifolia community was subdivided into 2 groups, Rosa rugosa group and Diodia teres group. K. paniculata community was subdivided into 2 groups, Grewia biloba var. parviflora group and Typical group. Lake vegetation type was divided into 1 community, Nelumbo nucifera community. And it was entirely classified into 11 community units.

국가산림자원조사 자료와 임상도를 이용한 경기지역 산림의 임분재적 공간분포 추정 (Estimating the Spatial Distribution of Forest Stand Volume in Gyeonggi Province using National Forest Inventory Data and Forest Type Map)

  • 김은숙;김경민;김종찬;이승호;김성호
    • 한국산림과학회지
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    • 제99권6호
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    • pp.827-835
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    • 2010
  • 기후변화협약 대응을 위한 산림의 임목축적량과 변화량 탐지의 측면에서 국가산림자원조사는 신뢰성있는 산림통계량을 산출하기 위한 기반자료로서의 결정적인 역할을 담당하고 있다. 그러나 많은 정보들이 아직 행정구역단위 통계로만 산출되고 있어 산림 통계량의 공간적 분포와 같은 정보를 제공해주지는 못하고 있다. 따라서 본 연구는 국가산림자원조사 자료를 이용해 임상특성별 임분재적 추정모델을 개발하고, 임상도와 통합하여 임분재적의 공간분포를 추정하는 것을 목표로 하였다. 산림의 임분재적 추정모델 개발을 위해 연구대상지에 포함된 국가산림자원조사 자료를 이용하여 표본점별 임분재적과 흉고단면적합을 산출하고, 표본점의 임황정보(수종, 경급, 영급, 소밀도)를 모델개발에 활용했다. 결과적으로 수종, 영급, 소밀도 기준에 따른 임분재적 모델이 구축되었으며, 본 모델을 임상도에 적용해 임분재적 주제도와 불확실성 주제도를 제작했다. 임분재적 주제도에 의한 연구대상지의 평균 임분재적은 85.7 $m^3$/ha이며, 95% 신뢰구간을 고려했을 때 약 79.7~91.8 $m^3$/ha 구간에 포함되는 것으로 나타났다.

속리산 천왕봉 일대의 산림형 분류와 생태적 특성 (Forest Type Classification and Ecological Characteristics for Areas of Cheonwangbong, Songnisan)

  • 정상훈;황광모;성주한;김지홍
    • 한국산림과학회지
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    • 제104권3호
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    • pp.375-382
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    • 2015
  • 속리산 천왕봉 일대의 천연림을 대상으로 식생 단위별 생태적 시업방안을 도출하기 위한 기초자료를 제공하기 위해 산림형을 구분하고 각 산림형별로 생태적 특성을 파악하였다. 사분각법을 적용하여 250개의 표본점을 추출하였고, 각 표본점 마다 층위별 식생자료를 수집하였다. 연구대상지의 산림형을 구분하기 위해 다양한 다변량 통계분석 기법을 이용하였으며, 산림형별 식생의 안정성과 성숙도를 파악하기 위해 종다양성지수를 분석하였다. 군집분석을 통해 2~10개의 Cluster로 산림형을 분류하였고, 지표종분석으로 적절한 Cluster의 수를 5개로 추정하였으며, 다중판별분석으로 추정된 Cluster 수가 적절했음을 검증하였다. 5개의 산림형별로 수종구성을 분석한 결과, 계곡부에서는 졸참나무림과 중생혼합림, 능선부에서는 신갈나무림, 주능선에서 뻗어 나온 보조능선부에서는 소나무림, 보조능선과 계곡부 사이에서는 굴참나무-소나무림 등으로 분류되었으며, 전체적으로 참나무류와 소나무가 우점하는 것으로 나타났다. 상층의 수종 구성이 단조로운 소나무림의 종다양성지수가 가장 낮았던 반면, 식생 구성이 다양한 중생혼합림의 경우 종다양성지수가 가장 높은 것으로 나타나 식생구성이 다양할수록 종다양성지수가 증가하는 양상을 보였다.

산림식생유형에 따른 조류 종다양성 분석 (Bird Species Diversity Analysis According to the Type of Forest Vegetation)

  • 박인환;김유훈;조광진
    • 한국환경복원기술학회지
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    • 제15권6호
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    • pp.43-52
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    • 2012
  • For this paper, a study targeting 9 forest patches in Dangjin to suggest for the wild birds, was conducted. The correlation between the emergence of wild birds and the forest vegetation was analyzed, and the patterns of forest vegetation for the improvement of species diversity were suggested by classifying wild birds and foraging guild by the type of forest vegetation. As for the characteristics of the wild birds emerged, more species and bigger population appeared in the vegetation type of mixed stand forest where the natural deciduous broadleaf trees and evergreen needleleaf trees coexisted in the large scale vegetation area. Thus, it was known that the advent of summer migratory birds and resident birds were affected the most by forest patches and vegetation types. As for foraging guild, the larger the forest paches the more the species and the population of the wild birds inhabiting in shrubs and bushes.

DEVELOPING PREDICTIVE METHOD FOR FOREST SITE DISTRIBUTION USING SATELLITE IMAGERY AND TPI (TOPOGRAPHIC POSITION INDEX)

  • Kim, Dong-Young;Jo, Myung-Hee
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2008년도 International Symposium on Remote Sensing
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    • pp.281-284
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    • 2008
  • Due to the remarkable development of the GIS and spatial information technology, the information on the national land and scientific management are disseminated. According to the result of research for an efficient analysis of forest site, it presents distinguishing of satellite image and methodology of TPI (Topographic Position Index). The prediction of forest site distribution through this research, specified Gyeongju-si area, gives an effect to distinguishing honor system through Quickbird image with the resolution 0.6m. Furthermore it was carried out through TPI grid that is abstracted by DEM, slope of study area and type of topography, as well as it put its operation on analysis and verification of relativity between the result of prediction on forest site distribution and the field survey report. It distinguishes distribution of country rock that importantly effects to producing of soil, using 1: 5000 forest maps and grasping distribution type of soil using satellite image and TPI, it is supposed to provide a foundation of the result on prediction of forest site. With the GIS techniques of analysis, inclination of discussion, altitude, etc, and using high resolution satellite image and TPI, it is considered to be capable to provide more exact basis information of forest resources, management of forest management both in rational and efficient.

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Development of Safety Sensor for Vehicle-Type Forest Machine in Forest Road

  • Ki-Duck Kim;Hyun-Seung Lee;Gyun-Hyung Kim;Boem-Soo Shin
    • Journal of Forest and Environmental Science
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    • 제39권4호
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    • pp.254-260
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    • 2023
  • A sensor system has been developed that uses an ultrasonic sensor to detect the downhill slope on the side of a forest road and prevents a vehicle-type forest machine from rolling down a mountainside. A specular reflection of ultrasonic wave might cause severe issues in measuring distances to targets. By investigating the installation angle of the sensor to minimize the negative effects of specular reflection, the installation angle of lateral monitoring ultrasonic sensor could be determined based on the width of road shoulder. Obstacles such as small rocks or piece of log in a forest road may cause the forest machine to be overturned while the machine riding over due to excessive its posture change. It was determined that the laser sensor could be a part of a sensor system capable of specifying the location and size of small obstacles. Not only this sensor system including ultrasonic and laser sensors can issue a warning of dangerous sections to drivers in forest forwarders currently in use, but also it can be used as a driving safety sensor in autonomous forest machine or remote-control forest machine in the future.

리기다소나무 방부 정각재를 이용한 목재 옹벽의 강도 성능 평가 (Strength Properties of Wooden Model Retaining Wall Using Preservative Treated Square Timber of Domestic Pinus rigida Miller)

  • 박준철;김건호;이동흡;황원중;홍순일
    • Journal of the Korean Wood Science and Technology
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    • 제38권6호
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    • pp.532-540
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    • 2010
  • 국내산 주요 침엽수 소경목의 활용 방안으로 리기다소나무를 이용한 목재 모형 옹벽을 제작하여 강도 성능을 평가하였다. 목재 모형 옹벽은 가로, 세로 11 cm의 CUAZ-2 처리한 리기다소나무 방부 정각재를 사용하여 3개의 Type으로 제작하였다. 각 Type별 옹벽은 횡목 4층 종목 3층 총 7층의 높이 86 cm, 길이 300 cm, 폭 93 cm로 제작 하였으며 기본형인 Type I과 목재 사용량을 줄이기 위해 중간에 긴 종목과 짧은 종목을 번갈아 사용한 Type II, Type II와 동일하게 제작한 후 횡목의 연결부위를 보강목으로 보강한 Type III으로 제작하였다. 각 Type별 옹벽은 수평 재하 시험을 통한 강도 성능 평가와 화상처리를 통한 구조물의 변형을 검토하였다. 수평 재하 시험 결과 최대 하중을 비교해 보았을 때 Type I은 63.17 kN/m, Type II는 57.80 kN/m, Type III은 60.97 kN/m으로 나타났다. 화상 처리를 통해 측정된 전면부의 최상층 변형을 비교해 보았을 때 Type I에 비해 Type II의 변형이 약 1.5배 많은 변형을 보였으며 Type I과 Type III은 비슷한 변형을 보이는 것을 알 수 있었다. 실험 결과 Type III의 경우 목재 사용량을 절감하면서도 양호한 강도성능을 확인 할 수 있었다.

Comparison of Organic Matter Dynamics between Natural Deciduous Broad-Leaved Forest and Adjacent Artificial Evergreen Coniferous Forest

  • Takahiro, Ichikawa;Terumasa, Takahashi;Yoshito, Asano
    • The Korean Journal of Ecology
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    • 제27권4호
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    • pp.217-224
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    • 2004
  • The purpose of this study is to clarify the effects of the conversion of the forest management type from a natural deciduous broad-leaved forest to an artificial evergreen coniferous forest based on organic matter dynamics. We investigated the amounts and carbon contents of the forest floor and the litterfall, soil chemical characteristics and cellulose decomposition rates in the natural deciduous broad-leaved forest and adjacent artificial evergreen coniferous forest. In the artificial evergreen coniferous forest were planted Japanese cypress (Chamaecyparis obtusa) on the upper slope and Japanese cedar (Cryptomeria japonica) on the lower slope. The soil carbon and nitrogen contents, CEC and microbial activity had decreased due to the conversion of the forest management type from a natural deciduous broad-leaved forest to an artificial Japanese cypress forest, and were almost the same for the conversion to a Japanese cedar forest. Under the same conditions, it is considered that the soil fertility was different by planting specific tree species because the organic matter dynamics were changed by them.