• Title/Summary/Keyword: forest ecosystem

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Effects of Clear-cutting on Forest Arthropod Communities at Two Different Vertical Levels (Crown and Ground Surface) (산림 벌채가 산림의 수관 및 지표 절지동물 군집에 미치는 영향)

  • Park, Young-Seuk;Park, Young Kyu;Yang, Hee Moon
    • Korean Journal of Ecology and Environment
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    • v.49 no.4
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    • pp.271-278
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    • 2016
  • Forest clear-cutting operations influence biodiversity through habitat changes and food resource availability for inhabitant species. This study examined the effects of clear-cutting on forest arthropod communities. Arthropods were collected from two different forest treatment areas (clear-cut and control) in summer and autumn. In each treatment area, arthropods were sampled from both crown and ground surfaces using sweeping and pitfall trap methods, respectively. Then, the taxonomic order of the collected arthropod specimens was easily identified. Results indicate that arthropod abundance and number of taxa present were higher at ground surface than at crown levels in both clear-cut and control areas. At crown level, more homopteran species were present in clear-cut areas than in control areas in summer. At ground surface, populations of Isopoda and Opiliones were higher in control areas than in clear-cut areas, whereas numbers of Araneae, Orthoptera, and Hymenoptera were greater in clear-cut areas. Cluster analysis and principal component analysis showed distinct differences between clear-cut and control communities at crown level in summer and at ground surface in autumn. Thus, our results indicate that clear-cutting significantly influences arthropod communities, and higher taxa are valuable for conducting rapid biological assessments of ecosystem disturbances.

Initial Survey on Pit and Mound in Fir Forests in Soraksan Mountain (설악산 전나무림에 나타난 흙 패임과 둔덕에 관한 기초조사)

  • 전상규;윤영일
    • Korean Journal of Environmental Biology
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    • v.22 no.2
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    • pp.287-294
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    • 2004
  • Pits and mounds created by windthrow have significant impacts on forest ecosystem. In order to establish initial data base, 80 pits and mounds were sampled and surveyed in 5 fir forests in Nae-Sorak Mountain. Characteristics and forms were surveyed and frequency of tree species appearance were surveyed as well. 4.9% of surveyed area (0.4 ha) was pits and mounds in El and E2 areas except old areas where survey was done by estimation. E3 area showed the highest proportion, 11.7% of 0.1 ha of sampling area.

Development of Spatial Data Management System to Estimate Regional Evapotranspiration Using a Land Surface Parameterization

  • Kim, Kwang-Soo;Chung, U-Ran
    • Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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    • 2003.09a
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    • pp.58-61
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    • 2003
  • A land surface parameterization has been used to simulate influences of the terrestrial surface on the atmosphere. A simple biosphere model (SiB2), one of land surface parameterization, calculates exchange of radiation, sensible heat, latent heat, and momentum between the surface and the atmosphere (Sellers, et al., 1996).(omitted)

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수치기후도 기반 사과 재배적지 평가시스템

  • Jeong, Yu-Ran
    • Proceedings of The Korean Society of Agricultural and Forest Meteorology Conference
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    • 2003.09a
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    • pp.97-114
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    • 2003
  • (1) MAPPLE 친구 만들기 MAPPLE.apr 파일을 실행시킨다. 그림1은 처음 화면이다.(Picture Omitted) \circled1 Tile : 제목 \circled2 Menu Bar : 8개의 상위메뉴로 이루어져 있다. \circled3Button Bar : Button을 클릭함과 동시에 원하는 명령을 수행하는 Button \circled4Tool Bar : Tool을 클릭하고 View 창으로 이동하여 원하는 명령을 내리면 수행하는 Tool \circled5View Document : Map 또는 메뉴, Button, Tool에서 수행된 결과물을 볼 수 있는 창(중략)

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A newly Recorded Species of the Genus Hallodapus (Hemiptera: Heteroptera: Miridae) from the Korean Peninsula

  • Kim, Junggon;Bae, Jongmin;Hong, Euijeong;Jung, Sunghoon
    • Journal of Forest and Environmental Science
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    • v.38 no.2
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    • pp.133-136
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    • 2022
  • A species, Hallodapus kyushuensis is first reported from the Korean Peninsula. Morphological information including the redescription, diagnosis, and a key to the Korean Hallodapus species are provided.

Landscape Ecological Analysis of Coastal Sand Dune Ecosystem in Korea (해안사구생태계의 경관생태분석)

  • Kim, Jae-Eun;Hong, Sun-Kee
    • Journal of the Korean Society of Environmental Restoration Technology
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    • v.12 no.3
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    • pp.21-32
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    • 2009
  • Coastal sand dune area is the important ecosystem as an ecotone which located between coastal area and terrestrial area. Moreover, it is very complicate landscape that have geomorphological interaction between erosion and accumulation of sand. Therefore, it is necessary to understand the sand dune ecosystem in view point of landscape scale including background landscape affecting origin of sand dune. Landscape ecological approach in the complicate ecosystem already started in developed countries, and it is applied to land management and biodiversity conservation strategies even in national scale. In this paper, landscape ecological analysis using landscape pattern analysis was carried out on 7 study areas (Yellow Sea : Hakampo and Doksan, South Sea : Namyeol and Balpo, East Sea : Hosan, Hupo and Goraebul) in Korean coastal sand dune ecosystem. Landscape elements were composed by 9 elements in these study areas. Major background landscape elements was the forest land and agricultural field. Namyeol (S06) has larger patch landscape compare to other areas. In patch shape indices, Hupo (E10) shows more complicate patch shapes. The high landscape heterogeneity showed in the Doksan sand dune area and that of Hosan. It shows that these areas were composed by various patch types. However, using landscape indices have to use very carefully because several variables have influence to the result such as scale and spatial pattern of study areas. Although landscape analysis through landscape indices shows sometimes difficult to explain the ecosystem, landscape scale approach on ecosystem assessment still useful to interpret in ecological process in large range of habitat.

A Study of Accumulated Ecosystem Carbon in Mt. Deogyusan, Korea (덕유산의 생태계 탄소축적량 산정에 관한 연구)

  • Jeong, Seok-hee;Eom, Ji-young;Jang, Ji-hye;Lee, Jae-ho;Cho, Koo-hyun;Lee, Jae-seok
    • Korean Journal of Environmental Biology
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    • v.33 no.4
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    • pp.459-467
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    • 2015
  • Understanding of a carbon storage in a regional scale ecosystem is a very important data for predicting change of global carbon cycle. Therefore, the real data collected in the various ecosystems are a very useful for enhancing accuracy of model prediction. We tried to estimate total accumulated ecosystem carbon in Deogyusan National Park (DNP) with naturally well preserved ecosystem. In DNP, vegetations were classified to four main communities with Quercus mongolica community (12,636.9 ha, 54.8%), Quercus variabilis community (2,987.0 ha, 13.0%), Pinus densiflora community (5,758.0 ha, 25.0%), and Quercus serrata community (402.9 ha,1.7%). Biomass and soil carbons were estimated by the biomass allometric equations based on the DBH and carbon contents of litter and soil (0~30 cm) layers collected in 3 plots ($30cm{\times}30cm$) in each community. The biomass and soil carbons were shown as high value as 1,759,000 tC and 7,776,000 tC, respectively, in Quercus mongolia community in DNP area. In Quercus mongolica, Quercus variabilis, Quercus serrata, Pinus densiflora communities, the accumulated ecosystem carbon were shown 9,536,000 tC, 1,405,000 tC, 147,000 tC, 346,000 tC, respectively. Also, the total ecosystem carbon was estimated with 11,434,000 tC in DNP.