A Study on Detection of Deforested Land Using Aerial Photographs

Ham, Bo Young; Lee, Chun Yong; Byun, Hye Kyung; Min, Byoung Keol

doi:10.7319/kogsis.2013.21.3.011

Cited by 5 publications

(2 citation statements)

References 2 publications

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“…한편 산지 훼손에 관한 연구들은 기존의 산지 훼손 탐지 (Ham et al, 2013)과 훼손실태 (Huh et al, 2007;Park et al, 2010;Choi et al, 2014), 훼손으로부터의 복원 (Lee et al, 2008;Choi et al, 2014) 등이 진행되어 오다가 최근 산림복지 이슈가 접목되면서 산 지관리 중요성이 부각되었으며 (Kim et al, 2013;Yoo, 2014) 명산이었고 (Shin, 2007), 진주 8경의 하나이면서 (Kim and Hwang, 2003), 진주시를 상징하는 도시경관의 주된 요소로 평가되어 왔다 (Park et al, 2010).…”

Section: 반면에 산지 훼손은 산지의 지속적 기능유지에 커다란 난제로unclassified

Civic Consciousness Analysis on the Damaged Forest Lands’ Restoration and Use

허¹,

허²,

박³

2015

J. People Plants Environ.

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The purpose of study was to find critical problems which needed urgent solution and give policy priorities on the damaged forest lands close to cities through analysis of public perception. A survey was conducted of forest land users at the entrance of Mt. Bibongsan. And the survey consist of the questions of socioeconomic background on its nominal scale and the questions of cultural value, problem, solutions, maintenance methods and main body to drive related policies for the highly damaged Mt. Bibongsan on 5-point Likert scale. The 86.7 percent of respondents were in the over forties' age and 65.3 percent visited the forest land more than two times a month. The early five categories' averaged values were ranging from 3.54 to 3.89. Among the categories, 'Solutions of the damaged forest land,' 'Mt. Bibongsan Restoration method' and 'Main body to drive policies' showed statistical significance in their internal variables from Kruskal-Wallis test. But they did not show exact the ranking between variables and ranking. So thirty variables were reclassified to five categories (F1 ~ F5) by factor analysis. And with using this categories as dependent variables, five regression models were established respectively. The result showed that 'Problem of Mt. Bibongsan (F1a)' could be severer by illegal facilities and soil erosion from farming and 'Solutions of Mt. Bibongsan (F1b)' took the restoration of forest and destruction of aged houses on hillside as priories. For 'Historical resources restoration (F2)', it required to find folk tales and commune with citizen more from restoration of historical resources. To enhance 'Mt. Bibongsan's cultural value (F3)', it was very important to consider citizen's emotion linked to Mt. Bibongsan. As a 'Main body to drive policies (F4)', citizen's active participation is more effective to policy enforcement. 'Maintenance policy projects (F5)' took restoration forest from farmland and forestscape improvement on city-viewed part as urgent projects.

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Section: 반면에 산지 훼손은 산지의 지속적 기능유지에 커다란 난제로unclassified

Civic Consciousness Analysis on the Damaged Forest Lands’ Restoration and Use

허¹,

허²,

박³

2015

J. People Plants Environ.

View full text Add to dashboard Cite

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“…3). Kim and Yeom (2012) and Ham et al (2013) selected the best scale weighted value as the lower number than 60, and it is higher than scale weighted value of this study. This is because classification category was diverse in the previous studies, but in this study, Scale weighted value was chosen low to obviously divide crown of infected trees and uninfected trees with pine wilt disease.…”

Section: Resultsmentioning

confidence: 97%

Detection of Trees with Pine Wilt Disease Using Object-based Classification Method

Jeongmook¹,

WooDam²,

Lee³

2016

Journal of Forest and Environmental Science

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In this study, regions infected by pine wilt disease were extracted by using object-based classification method (OB-infected region), and the characteristics of special distribution about OB-infected region were figured out. Scale 24, Shape 0.1, Color 0.9, Compactness 0.5, and Smoothness 0.5 was selected as the objected-based, optimal weighted value of OB-infected region classification. The total accuracy of classification was high with 99% and Kappa coefficient was also high with 0.97. The area of OB-infected region was approximately 90 ha, 16% of the total area. The OB-infected region in Age class V and VI was intensively distributed with 97% of the total. Also, The OB-infected region in Middle and Large DBH class was intensively distributed with 99% of the total. In terms of the topographic characteristics of OB-infected region, the damages occurred approximately 86% below the altitude of 200 m, and occurred 91% with a slope less than 10 degree. The damage occurred a lot in low hilly mountain and undulating slope. In addition, the accessibility to road and residential area from OB-infected region was less than 300 m in large part. Overall, it was figured out that artificial effect is stronger than natural effect with regard to the spread of pine wilt disease.

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A comparative analysis of forest area differences between statistics information and spatial thematic maps

Park

Lee

2022

Forest Science and Technology

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A Study on Detection of Deforested Land Using Aerial Photographs

Cited by 5 publications

References 2 publications

Civic Consciousness Analysis on the Damaged Forest Lands’ Restoration and Use

Civic Consciousness Analysis on the Damaged Forest Lands’ Restoration and Use

Detection of Trees with Pine Wilt Disease Using Object-based Classification Method

A comparative analysis of forest area differences between statistics information and spatial thematic maps

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