• Title/Summary/Keyword: Ecological Characteristics

Search Result 2,430, Processing Time 0.038 seconds

Ecoregional Characteristics of Korea for Application on Forest Landscape Restoration in North Korea (북한 산림경관복원 적용을 위한 한반도 생태지역 특성)

  • Yu, Jaeshim;Kim, Kyoungmin
    • Journal of the Korean Society of Environmental Restoration Technology
    • /
    • v.18 no.6
    • /
    • pp.61-71
    • /
    • 2015
  • The objectives of this study are to construct an ecoregion map and to extract ecological factors from each ecoregion to adapt FLR (Forest Landscape Restoration) of North Korea. An ecological map was constructed by PCA(Principal Component Analysis) and MGC(Multivatiate Geographical Clustering). An ANOVA test verified the differences among ecoregions, and post-hoc pair wise comparisons were performed to determine similarities between them. Factor analysis was conducted to extract ecoregional characteristics. Ecoregions were distributed into clusters reflecting differences of south and north and of east and west of their ecological factors. About 12% of land area in North Korea shared similar ecological factors with South Korea, but the remaining 88% was found to be ecologically different. The ANOVA test showed a p-value of 0.000, indicating significant differences between the regions. Post-hoc pair wise comparisons indicated statistically significant similarities in annual mean temperature between ecoregion D and G, precipitation seasonality between ecoregion H and O, and precipitation of the warmest quarter between ecoregion K and O. Because ecoregion A and N showed same in their soil water contents, they were assumed that the dense of forest cover in the Southern ecoregion A is similar to that in the Northern ecoregion N of Korean peninsular. Based on the results of this study, it is necessary to accommodate quantitative and spatial based planning, when South Korea aids forest restoration projects in North Korea. In addition, it is recommended for both South and North Korea to share on Forest Landscape Restoration methodologies with each other.

Distribution Characteristics of Riparian Vegetation in the Mid and Lower Reaches of the Nakdong River, Korea (낙동강 중.하류지역의 수변 식생 분포 특성)

  • Yeo, Un-Sang;Lee, Yong-Min;Kim, Ki-Sup;Sung, Ki-June;Kang, Dae-Seok;Lee, Suk-Mo
    • Journal of Environmental Science International
    • /
    • v.17 no.2
    • /
    • pp.149-162
    • /
    • 2008
  • Aquatic and riparian vegetation of river ecosystems are very important both in ecological and management perspectives. Vegetation surveys were conducted to understand the characteristics of riparian vegetation in the mid and lower reaches of the Nakdong River, Korea. A total of 68 families and 260 species were identified at eleven survey sites. The numbers of taxa were similar to those reported in a previous survey in 1996,but the percentage of naturalized plants increased more than two times compared to that in the previous survey. Survey sites near Yangsan Bridge and Nambu Park in Yangsan showed the highest percentage of naturalized plant species. Urbanization indices of the survey sites were high at 18.8% on average. Therophytes were the most dominant plant life form at the survey sites with 39.2% of total plants identified, followed by phanerophytes (19.2%), hemicryptophytes (18.9%), aquatic plants (13.9%), cryptophytes (5.8%), and chamaephytes (3.1%). The relative composition of hemicryptophytes decreased whereas those of therophytes and chamaephytes increased compared to those in the survey in 1996. This may be due to increase in dryness of riparian soils or degradation of riparian areas. Plant compositions at sites near Jeokpo Bridge and Hwoicheon suggest that the composition and distribution of riparian vegetation are affected by land use pattern surrounding riparian areas or human accessibility to the areas.

A Study on the ecological characteristics of the 'traditional house' and how it is ecologically applied from a natural aspect (자연성에 근거한 전통주거건축의 생태학적 특성과 적용에 관한 연구)

  • 한경희;김자경
    • Korean Institute of Interior Design Journal
    • /
    • no.25
    • /
    • pp.236-244
    • /
    • 2000
  • The concept of the true house' is based on the balance of a person's life and nature and represents the life in which lies an organic harmony between environment and ecology. However, humans have always been in a position of dominance over nature and with their developments have brought on much destruction and corruption to the ecosystem. With this, the position of the true house has intensified and the ecological approach of architecture has started to come into consideration as its alternative plan. Accordingly, it is essential to reconstruct and take on a new perspective of nature. The conversion to a more Oriental approach, which dwells in the adaptation and harmony of nature, is especially sufficient to the ecological aspect of architecture. From this we can realize that the ecological approach is none other than a modern interpretation of what our ancestors have lived by. In other words, an architectural concept deriving from the adaptation of climate, season, and nature-the coexistence of man and nature. From an ecological point of view, the idea of favoring nature in the traditional house can be found in the inclination of being one with nature by adapting to its geographical and preferable climate conditions. This results in the use of natural energy, the use of natural resources, the organic connection between the inner and outer natural space, and the application of nature itself. By approaching these elements from a modern point of view and applying it to the current time, we can open up the door to a more lasting human-environment based ecological position of architecture where our own climatic characteristics and traditions can be reflected in the pursuit of harmony between man and nature.

  • PDF

Setting Ecological Goals and Success Criteria Items for Ecological Restoration Projects : Focusing on the Coastal Restoration Projects (생태복원사업의 생태적 목표 및 성공 판단기준 항목 설정 : 연안복원사업을 중심으로)

  • Lee, Sukmo;Lee, Dongjoo;Seo, Jinhyeong
    • Journal of the Korean Society for Marine Environment & Energy
    • /
    • v.20 no.1
    • /
    • pp.12-17
    • /
    • 2017
  • This study established ecological goals and success criteria by using results of the coastal ecosystem restoration demand survey. The ecological goals are set for species diversity, regulation of seawater flow, improvement of purification, erosion prevention and habitat provision by ecosystem types. The indicators of success criteria are chosen the number of emergence species and community characteristics of target organism and pertinent items of hydrologic, water quality and sediment environment by ecological goals among the investigation items of tidal flat investigation guideline.

A Study on the Planning Characteristics of Ecological City - A Case Study of HafenCity, Hamburg - (생태도시 구축을 위한 계획 특성에 관한 연구 - 독일 함부르크 하펜시티 사례를 중심으로 -)

  • Park, Jong Ki;Chin, Kyung Il
    • KIEAE Journal
    • /
    • v.12 no.4
    • /
    • pp.3-12
    • /
    • 2012
  • Nowadays, interests on Eco-city planning as Solution for problems of energy demand and environmental change has grown. so Eco-city planning became a major political topic for urban planning and urban design in many advanced nation cities. The purpose of this study is to find out the organized characteristics of Eco-City planning by analyzing successful overseas case where wasted historic port area in city is are regenerated with a environment-friendly concept for Eco-City "HafenCity". It is located on Hamburg-mitte in Hamburg, Germany and is currently the largest construction project in Europe. HafenCity as Home to about 12,000 and the workplace of 40,000 people is being created to accommodate a variety of uses including residential buildings, business, office and retail space as well as cultural and leisure facilities. First of all, HafenCity impresses because of its size as well as because of its Urban planning for eco-city. It presents the excellent change from wasted historic port to the ecological urban space.

Factors Associated with Health Promotion of Caregivers Based on a Socio-ecological Model (사회생태모형에 기초한 요양보호사 건강증진행위의 관련요인)

  • Kim, Young-Ae;Yoon, Hee-Sang
    • Journal of Korean Public Health Nursing
    • /
    • v.25 no.1
    • /
    • pp.61-72
    • /
    • 2011
  • Purpose: To investigate the behavioural factors of the health promotion for caregivers based on a socio-ecological model. Methods: This study was a cross-sectional descriptive study using a self administered questionnaire. The survey was conducted in 219 people chosen through convenient sampling between September and December 2008. The collected information included general characteristics, individual, interpersonal, community, policy level. Results: For the statistical analysis, the t-test was used for the health promotion according to the general characteristics and to each level of the socio-ecological model, by assessing the high and low values and dividing them into mean points. The influence elicited by different health promotion factors was determined using the hierarchical multiple regression. At the individual level, the factors influencing health promotion in caregivers included perceived seriousness, perceived benefits, and self efficacy. Social support was important at interpersonal level, and the use of community resource was relevant for the community level. We found no statistically significant factors relating to the policy level. Conclusions: In conclusion, the socio-ecological models seems appropriate for explaining health promotion and its associated factors in caregivers. We suggest that, for caregivers, strategies should be developed for their social support and to offer information about how to use community resources in relation with factors relating to the individual level.

Estimations on population ecological characteristics of small yellow croaker, Larimichthys polyactis by the drift gillnet fishery in Korean waters (한국 주변해역 참조기의 자원생태학적 특성치 추정)

  • Lee, Jong Hee;Seo, Young Il;Oh, Taeg Yun;Lee, Dongwoo
    • Journal of the Korean Society of Fisheries and Ocean Technology
    • /
    • v.49 no.4
    • /
    • pp.440-448
    • /
    • 2013
  • Estimations on population ecological parameters of the small yellow croaker, Larimichthy polyactis in Korean waters, were calculated using catch data based on coastal and offshore drift gillnet fishery and biological data from 2010 to 2012. The population ecological parameters included survival rate, instantaneous coefficient of natural and fishing mortality and age/length at first capture. The survival rate (S) of the small yellow croaker was estimated to be 0.20 from catch curve method. The instantaneous coefficient of natural mortality (M) was estimated to be 0.46/year with Alverson and Carney method. The instantaneous coefficient of total mortality (Z) was 1.611/year, used to be transformed the survival rate and the instantaneous coefficient of fishing mortality (F) were 1.153/year. The length at first capture ($L_c$) was 19.1cm by Pauly method, and the age at first capture ($t_c$) was 1.303 years of the small yellow croaker by the coastal and offshore drift gillnet fishery.

Characteristics of woodland changes in an agricultural landscape - The case of Gwangju (농촌경관지역의 산림변화 특성)

  • Lee, Young-Chang;Jung, Woon-Joo;Kim, Keun-Ho
    • Korean Journal of Agricultural Science
    • /
    • v.38 no.3
    • /
    • pp.429-436
    • /
    • 2011
  • Recent landscape changes from human activities, such as agricultural development and urbanisation frequently result in the loss of habitats, the reduction in habitat patch size and an increasing isolation of habitat patches. However, there is little information on woodland changes in agricultural landscapes. Therefore, the aim of this research was to assess spatial characteristics and changes of woodland in an agricultural landscape and how these may have had an impact on ecological process for 33 years. One of the agricultural landscape character units was analysed based on aerial photographs from 1976, 1983, 1994, 2002 and 2009 in Gwangju city. The results indicated that landscape ecological metrics clearly showed that they could be used to monitor changes of woodland ecological conditions during the past 33 years. The results imply that particularly human activities have been leading to the decrease of the mean size of woodland patches and finally result in woodland isolation. These changes may have a negative impact on woodland bird species in the study area. This woodland information can be used to identify the potential and specific needs for setting priorities for conservation planning.