• Title/Summary/Keyword: metropolitan forests

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An Analysis of Urban Green Network using Nearest Features Model in Korean Metropolitan Cities (최근린사상법을 활용한 6대 광역시 녹지네트워크 경향 분석)

  • Oh, Jeong-Hak;Jang, Gab-Sue;Kim, Yong-Bum
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.13 no.5
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    • pp.135-145
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    • 2010
  • This study was carried out to investigate the current urban forest network and future plan of forest framework using nearest features program where stepping stones within 5km from the core forest were selected in the program. We found several conclusions as follows: First, we found that cities in inland area including Daegu, Dajeon and Gwangju have quite different types of forest network with comparing to the cities nearby coastline including Busan, Incheon and Ulsan. The cities in inland area have large mountain patch around each city. However they have small and lower number of island forests within their urban area. Otherwise, cities nearby coastline have more forest patches than in the cities in inland area, and Busan and Incheon especially have strong forest network using various size of forest patches. Second, Daegu and Daejeon have much smaller forest patches distributed in each urban area. So additional forest patches should be added to have highly strong forest network within urban area. Third, Ulsan and Gwangju have most stepping-stone forests close to the large mountain patches in suburban area, which are not able to connect to the forest patches in the central area of each city So additional forest patches are needed to be added in the central area of each city for reinforcing the effect of stepping stone in the central area. Though there should be an addition approach except for forest size and its isolation to construct the ecological network in an urban area, this indices can be a good method to check an environmental and ecological status in an urban area.

Correlation between a Soil Respiration and Environmental Factors, Air Temperature and Precipitation in Pinus densiflora Community in Namsan and Meaning on an Urban Forest Management (남산 소나무군락의 토양호흡과 환경요인인 기온과 강수량과의 상호관계 및 도시림 관리의 의미)

  • Lee, EungPill;Lee, SooIn;Park, JaeHoon;Kim, EuiJoo;Hong, YoungSik;Lee, SeungYeon;You, YoungHan
    • Journal of Korean Society of Forest Science
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    • v.109 no.2
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    • pp.136-144
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    • 2020
  • To prepare the management plan for reduction of the organic carbon emission caused by soil respirations, the amount of organic carbon emission from the pedosphere in Pinus densiflora community within metropolis park was quantified and then the correlations between quantified values and climate factors were analyzed. To this study, we investigated the amount of emitted organic carbon through soil respirations of Pinus densiflora community within Mt. Nam in Seoul-si, Korea, and identified correlationship with environmental factors. As a result, the average amount of organic carbons, included in soil respirations of P. densiflora community in Mt. Nam, was 7.978 ton C ha-1 yr-1. Also, precipitation of spring (March to May) was one of the environmental factors explaining the increase and decrease of soil respiration. This results suggest a drainage management to keep the low water content in understorey soils is important to an ecological management of metropolitan forests.

A Study on the Utilization of Biotope Map in Urban Planning - Focusing on the land use designation and planned urbanized area - (도시계획 수립에 있어 도시생태현황지도 활용방안 연구 - 용도지역과 시가화예정용지를 중심으로 -)

  • Kwon, Jeon-O;Park, Seok-Cheol;Baek, Seung-A
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.24 no.4
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    • pp.31-46
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    • 2021
  • In South Korea, there is a growing domestic need for a biotope map which contains ecological and environmental geographic information of a city. After the production of a Urban Ecological Maps(biotope map) by the Seoul metropolitan government in 2000, Natural Environment Conservation Act was revised in 2017 to make it mandatory for a local government to draw up its own urban ecological map. The aim of the present study was to find out ways to utilize an urban ecological map as a mean of communication between natural environment planning and urban planning sectors in a preliminary stage before introducing a big framework of 'environmental and ecological planning.' The northern area of Incheon metropolitan city was selected as the target area for this study. The major research content includes a comparative analysis of special-purpose zones, urban planning zones, restricted development zones, and conservation forests with focus on biotope types and Grades 1 of 'Biotope Type Assessment.' Farmland biotopes and forest biotopes within an area designated as an urban zone (residential, commercial and industrial zones) need to be redesignated as a zone which can conserve them. Especially considering a high possibility of damage to a large scale of natural green areas, these areas need to be readjusted immediately. If the entire area designated as an urban planning zone is to be developed, it is likely to cause serious damage to natural biotopes in the area (56.2%), including farmland biotope (30.4%), forest biotope (15.0%) and grassland biotope (10.8%), and thus, readjustment is needed. In case of a conservation forest, as it can possibly be damaged by the designation of special-purpose zones, it is necessary to match the designation of conservation forests or a special-purpose zones with their biotope types. In conclusion, we present a variety of thematic maps for utilization of an urban ecological map and propose a phase-specific environmental and ecological plan. Phase 1 is the establishment of a urban plan in consideration of ecological status; Phase 2 is the independent establishment of an environmental and ecological plan by an environment department; Phase 3 is an integrated management of ecological planning system and urban planning system.

The Relationship between Characteristics of Forest Fires and Spatial Patterns of Forest Types by the Ecoregions of South Korea (한국의 생태지역별 산불특성과 임상분포패턴과의 관계)

  • Lee, Byungdoo;Song, Jungeun;Lee, Myungbo;Chung, Joosang
    • Journal of Korean Society of Forest Science
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    • v.97 no.1
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    • pp.1-9
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    • 2008
  • It is necessary to examine relationship between spatial patterns of forest types and characteristics of forest fires for efficient management of fire and forest. By the ecoregions of South Korea, we computed landscape indices for whole types of forests(landscape level) and pine forests(class level), and analyzed characteristics of forest fires using statistics of forest fires from 1991 to 2006. We performed canonical correlation analysis to model the relationship between the landscape indices and the statistics of forest fires. At landscape level, forest patches were larger and more complex in the ecoregions which had higher percentage of forest area. At class level, pine forest patches were more complex and closer to neighbor patches in the coastal ecoregions. The ecoregions including metropolitan areas and cities had more frequent fire occurrences per 1,000ha, while mountainous coastal ecoregions had more burned areas and faster spread of fire growth rate. The canonical correlation between the landscape indices for pine forests and the statistics of forest fires was statistically significant at the 0.05 level and explained more than 70% of the variation in fire variables. The results showed that combustion time per fire was longer in the ecoregions which had larger and more aggregated pine forest patches.

Factors Affecting Changes in Forest Recreational Activities During the COVID-19 Pandemic (코로나19 팬데믹 이후 산림 휴양 활동의 변화 요인)

  • Chang, Chuyoun;Park, So-Hee;Seol, Ara
    • Journal of Korean Society of Forest Science
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    • v.110 no.4
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    • pp.711-723
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    • 2021
  • During the COVID-19 pandemic, social distancing affected daily life and leisure activities, including forest recreational activities. This study identified changes in people's participation in forest recreational activities and factors affecting their participation. It collected data from 1,000 samples through an online survey and analyzed it using a binary logit model with interaction terms. It was observed that there were decreases in the participation in visits to urban parks and green areas, outdoor activities in forests and mountains, and trips to mountain villages after the COVID-19 outbreak. People in their 40s, 50s, and 60s were more likely to decrease their participation in all kinds of forest recreational activities than those in their 20s. Moreover, higher household income earners were more likely to decrease their involvement in outdoor activities in forests and mountains. With respect to the place of residence, the residents in the Seoul metropolitan area were less likely to decrease their participation in trips to mountain villages than those outside this area. Thus, this study suggests that online forest recreation information services and forest management are needed to meet the demands of forest recreation for young generations and diversify the function of forests and rural areas as a safe leisurely space.

Study on the Regional Specialization of Major Species for Regional Forest Plans (지역산림계획을 위한 주요 수종의 지역별 특화에 관한 연구)

  • Park, Joowon
    • Journal of Korean Society of Forest Science
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    • v.106 no.3
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    • pp.330-339
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    • 2017
  • In Korea, metropolitan cities and provinces are responsible for setting up their own Regional Forest Plans to manage the forests at regional scales distinguished by administrative boundaries, and the role of the plans are very crucial by linking the Forest Basic Plan for nationwide forest management policy with Forest Management Plans for local-level forest management practices. Thus, the analysis of forest resources at regional levels is required to make more efficient regional forest plans by properly reflecting regional forest situations. This study aims to present which species are concentrated at each individual metropolitan city or province, contributing to more efficiently establishing its regional forest plan. In order to measure the concentration levels of species for each region, Location Quotient and Relative-Specialization Index are computed using area- and volume-data for the major species selected in the Statistical Yearbook of Forestry. As a result, the ranks among the indices of the major species for each individual municipal city and province are presented. The results from this study can contribute to the selection of regional target species and establishment of regional forest management objectives. Further study regarding the differences between the results from area-based and volume-based indices will be helpful to consider regional level productivity by species into the regional forest plans.

An Experience Needs Analysis on the Rural Amenity Resources of Urbanites (도시민의 농촌어메니티자원 체험욕구 분석)

  • Yun, Hee-Jeong
    • Journal of the Korean Institute of Landscape Architecture
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    • v.36 no.1
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    • pp.28-37
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    • 2008
  • This study intends analyzes the experience urbanites need regarding rural amenities when visiting rural areas for leisure. For this purpose, 18 rural amenities that can be experienced at 65 traditional rural villages and are designated by the rural development administration(RDA) were selected. Based on rural amenity selection, a questionnaire survey was conducted in 10 cities with 1,052 urban residents. The cities were divided into 5 metropolitan cities(Seoul, Busan, Daegu, Kwangju and Daejeon) and 5 small cities in each province(Chuncheon, Suwon, Jeonju, Chungju and Pohang). The study results suggest that of the 18 rural amenities, urbanites want greater experience with landscape resources near water and forests, health resources related to food and traditional resources such as traditional architecture and culture. Those amenities not chosen were animals, famous people and agricultural landscapes. In addition, women indicated more experience needs than men. Specifically, women want to experience the rural amenities dealing with tradition and health. In addition, people under 40 want to experience active program related festivals(events) and arts and crafts, whereas the group over 40 prefers a non-active program, such as observing the rural landscape and planting. College graduates want to experience the landscape while college students prefer arts and crafts and festivals(events). Those with below average salaries want to experience the most rural amenities. There were no differences in experience needs between those surveyed in metropolitan cities and those in small cities. Finally, the people who visited rural areas within the last year want to experience water, plants, agricultural landscape, health and rural life resources more than other groups, and there is correlation between plans to visit rural villages and experience needs. The results of this study provide insightful information for rural planning strategies such as selection of the type of marketing segments.

Planning System on Conservation and Improvement of Urban Forest - A Case Study in Daejon City, Korea - (도시림의 보호 및 증진관리를 위한 계획제도에 관한 연구 - 대전광역시를 사례로 -)

  • Chung, Soon-Oh
    • Journal of Korean Society of Rural Planning
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    • v.15 no.4
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    • pp.135-146
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    • 2009
  • Urban forest area in South Korea has been increased up to 20.8% of national land as of 2007 by the mergence of municipalities and counties. The rate of park and green tract among urban forest averages out to about 4% nationally but the Capital, Seoul, almost 105% level, not easy to split the two. Park and green has positive management system because of its infrastructure attribute and relevant security obligation standard while urban forest left alone with no such concerns. The most important reason of the negligence comes from institutional inertia although it is possible to be managed functionally by forest laws as like forests of park, landscape, wind and noise protection, and timber product. As a results, it reaches below than 92.64% of the national average level of the timber stockpile especially in the metropolitan areas and loses broad acres rapidly due to the easy conversion system to the urban land usage. Therefore, there must be required some alternative methodologies to conserve and foster it. The paper proposes the four urban forest management types and their control methods. The four types divide into conservation, foster, development, and reservation ones. Also it suggests the five furtherance tract types with the combination among the four earlier types, optionally having one of the six aim climaxes and recommends the standardization of operation design. The total green quantity index of urban forest also suggested by the weight method according to location and DBH class. The case study of the suggested model was executed on the Daejon Metropolitan area and its index calculated as 110.4% level compared with the acreage.

An EDA Analysis of Seoul Metropolitan Area's Mountain Usage Patterns of Users in Their 20~30s after COVID-19 Occurrence

  • Lee, BoBae;Yeon, PoungSik
    • Journal of People, Plants, and Environment
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    • v.24 no.2
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    • pp.229-244
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    • 2021
  • Background and objective: The purpose of this study was to comprehensively analyze the user behavior in order to cope appropriately with the increasing demand for mountain usage of those in their 20s and 30s and to allocate resources efficiently. Methods: To analyze the behavior of mountain hiking users, an exploratory data analysis (EDA) was conducted on the data which had been collected in the app Tranggle. The main target are users in their 20s and 30s who visited the mountains in the metropolitan area in 2019-2020. Among them, we have selected data on the top 13 mountains based on the frequency of visits. After data pre-processing, mountain usage patterns were analyzed through statistical analysis and visualization. Results: Compared to 2019, the number of users in 2020 increased 1.36 times. The utilization rate of the well-established hiking trails has also increased. The usage of mountain on weekends (Saturday > Sunday) was still the highest, and the difference in the usage between the days of the week decreased. Outside of work hours, early morning usage has increased and night-time usage has decreased. There was no significant change in usages depending on activity type, level (experience point) and exercise properties. Conclusion: Since the COVID-19 outbreak, the usage of mountains has been changing towards low user density and short-distance trip. in the post-COVID-19 era, the function and role of forests in daily life are expected to increase. To cope with this, further research needs to be carried out with consideration of the wider demographic and social characteristics.

A Study on Change of Wild Bird Habitat Characteristics According to Riparian Forest Construction in Yangjae Stream, Seoul (서울 양재천 하천 숲 조성에 의한 야생조류 서식특성 변화 연구)

  • Yun, Suk-Hwan;Han, Bong-Ho;Choi, Jin-Woo;Yun, Ho-Keun
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.21 no.5
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    • pp.97-110
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    • 2018
  • The purpose of this study is to provide basic data and evidence for the habitat improvement of wild birds in urban stream by analyzing changes in habitat characteristics of wild birds by riparian forest construction in Yangjae stream in Seoul. In Gangnam-gu, the multi layered riparian forest consisting of landscape trees and shrubs was formed on the slope. In Seocho-gu, the vertical vegetation structure of woody and herbaceous wetland plants was good. In Gangnam-gu, the vegetation area of the slope increased and the vertical stratification structure affected the species diversity of the forest birds. The number of species and individuals of plovers, sandpipers and wagtails decreased due to the impact of bicycle roads and trails. The poor forests on the levee slope in Seocho-gu affected the habitat selection and migration of the forest birds. The willows and amur silver-grasses formed in the riverside have been developed into the riparian forest, thus stabilizing the habitat of water birds by blocking disturbances from the influence of the trails.