• 제목/요약/키워드: coniferous forest

검색결과 400건 처리시간 0.021초

End-Member Mixing Analysis를 이용한 산림 소유역의 임상별 유출분리 비교 (Comparing of Hydrograph Separation in deciduous and coniferous catchments using the End-Member Mixing Analysis)

  • 김수진;최형태
    • 한국지형학회지
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    • 제23권1호
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    • pp.77-85
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    • 2016
  • To understand the difference of runoff discharge processes between Gwangneung deciduous and coniferous forest catchments, we collected hydrological data (e.g., precipitation, soil moisture, runoff discharge) and conducted hydrochemical analyses in the deciduous and coniferous forest catchments in Gwangneung National Arboretum in the northwest part of South Korea. Based on the end-member mixing analysis of the three storm events during the summer monsoon in 2005, the hillslope runoff in the deciduous forest catchment was higher 20% than the coniferousforest catchment during the firststorm event. Howerver, hillslope runoff increased from the second storm event in the coniferous catchment. We conclude that low soil water contents and topographical gradient characteristics highly influence runoff in the coniferous forest catchment during the first storm events. In general, coniferous forests are shown high interception loss and low soil moisture compared to the deciduous forests. It may also be more likely to be a reduction in soil porosity development when artificial coniferous forests reduced soil biodiversity. The forest soil porosity is an important indicator to determine the water recharge of the forest. Therefore, in order to secure the water resources, it should be managed coniferous forests for improving soil biodiversity and porosity.

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.

Characteristics of Breeding Bird Communities in Mt. Namsan, Seoul, Korea

  • Rhim, Shin-Jae;Lee, Ju-Young;Kang, Jeong-Hoon
    • 한국산림과학회지
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    • 제95권5호
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    • pp.580-584
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    • 2006
  • This study was conducted to clarify the characteristics of breeding bird communities between deciduous and coniferous forests from April to June 2005 in Mt. Namsan, Seoul, Korea. Two 10ha areas were selected for territory mapping of breeding bird communities. Number of breeding bird species, pairs,density and bird species diversity index were higher in deciduous forest with increasing amount of foliage in the forest profile or as forest structures developed compared with coniferous forest. The number of in coniferous forest. The differences in habitat structure between both study areas are very likely to have influenced how breeding birds used the available habitat. Forest structure and its interactions with birds should be consideration in forest management for birds and their habitat.

Antioxidant Characteristics in the Leaves of 14 Coniferous Trees under Field Conditions

  • Han, Sim-Hee;Lee, Jae-Cheon;Lee, Wi Young;Park, YoungKi;Oh, Chang-Young
    • 한국산림과학회지
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    • 제95권2호
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    • pp.209-215
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    • 2006
  • We investigated antioxidant capacity in leaves of 14 coniferous trees under field conditions. We focused on understanding the species characteristics on antioxidant systems and screening the coniferous tree species with the best antioxidant systems using their characteristics. The antioxidant capacity of 14 coniferous trees was divided into three groups. First group was Thuja orientalis and Chamaecyparis obtusa and those species had the highest content of ${\beta}$-carotene and xanthophyll. Second group, C. obtusa and Juniperus chinensis, used antioxidant enzymes to mitigate stress. C. obtusa represented high activity at superoxide dismutase (SOD), glutathione reductase (GR), and peroxidase (POD), and J. chinensis exhibited high activity at SOD, POD, catalase (CAT). Third group employed antioxidant such as ascorbic acid and ${\alpha}$-tocopherol. The antioxidant content of T. orientalis was the highest while that of Pinus parviflora and C. obtusa were the lowest. Few species belonged in three groups simultaneously, and most species belonged in at least one or two groups. In summary, we proposed that C. obtusa and T. orientalis had the highest antioxidant capacity while P. parviflora and P. desiflora for. multicalus had the lowest antioxidant capacity.

Differences in Artificial Nest Boxes Use of Tits Between Deciduous and Coniferous Forests

  • Rhim, Shin-Jae;Lee, Ju-Young
    • 한국산림과학회지
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    • 제94권5호통권162호
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    • pp.338-341
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    • 2005
  • This study was conducted to describe the differences in artificial nest boxes use of tits between deciduous and coniferous forests at 2nd campus of Chung-Ang University ($37^{\circ}00^{\prime}04^{{\prime}{\prime}}N$, $127^{\circ}13^{\prime}96^{{\prime}{\prime}}E$), Ansung, Korea from January to August 2005. Tree species richness, tree species diversity index (H') and total basal areas were higher in deciduous forest than in coniferous forest. High, middle, low and understory canopy layers were more developed in deciduous forest, except the coverage of bush-ground layer. Varied tit Parus varius, marsh tit P. palustris and great tit P. major used the artificial nest boxes in this study. Number of breeding pairs of tits used artificial nest boxes, clutch size, and weight and size of eggs were higher in deciduous forest than in coniferous forest. The differences in habitat structure between study sites are very likely to have influenced how breeding birds used the available habitat. Artificial nest boxes could be used as management and conservation tool for birds, particularly in areas, where the availability of natural cavities and coverage of higher layer are limited.

서울대 광양연습림내 토양 미소 절지동물에 관한 연구 - 3. 날개응애와 식생과의 관계 (Soil Microarthropods at the Kwangyang Experiment (3. Relationship between Soil Oribatid Mite and Vegetation))

  • Kwak, Joon-Soon;Kil, Bong-Seop
    • The Korean Journal of Ecology
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    • 제12권3호
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    • pp.191-202
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    • 1989
  • This study was carried out to investigate the relationship between soil mites(Acarina:Cryptostigmata) and vegetation in sampled area. From July 1984 to June 1985, samples were taken monthly from coniferous forests; a pinenut (Pinus koraiensis S. et Z.) forest (site C-1), a whitepine(Pinus strobus L.) forest (site C-2), a needle fir tree(Abies holophyla Max.) forest (site C-3), and three broad-leaved forests; site B-1, B-2, and B-3 in Cholanamdo province, southerm part of Korea. Vascular plants of 152 species belonging to 115 genera (53 families) were identified. The flora in the coniferous forests were more diverse than in the broad-leaved forest. Similarity coefficient to the flora was shown highly between the neighbouring sites. The oribatid species in the coniferous forests were more diverse than those in the broadleaved forests. The similarity index suggested that oribatid mites in those surveying sites could be divided into "coniferous forest type" and "broad-leaved forest type".d forest type".uot;.

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아고산 침엽수림 분포 면적의 20년간 변화 분석 (Change of Subalpine Coniferous Forest Area over the Last 20 Years)

  • 김은숙;이지선;박고은;임종환
    • 한국산림과학회지
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    • 제108권1호
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    • pp.10-20
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    • 2019
  • 본 연구는 기후변화로 점차 취약해지고 있는 아고산 산림생태계의 변화 및 쇠퇴 실태를 파악하기 위해 전국 아고산 지역 침엽수림의 장기 면적 변화를 파악하는 것을 주요 목적으로 하였다. 1990년대 중반 이후 20년간의 침엽수림 면적 변화 탐지를 위해 시계열 Landsat 위성영상을 분석하였고, 침엽수림 면적과 기후정보의 장기적 변화를 함께 비교하였다. 그 결과, 전체 분석대상지에서 침엽수림의 면적은 20년 동안 약 25 % 감소한 것으로 나타났다. 면적과 변화율의 측면에서 큰 변화가 있었던 지역은 설악산, 백운산-함백산-장산, 지리산, 한라산 등이었다. 이 중 감소면적이 가장 큰 지역은 백운산 지역이었으며(감소면적 542 ha), 침엽수림이 대면적으로 집단화되어 있으면서 감소율이 가장 큰 지역은 한라산이었다(감소율 33.3 %). 제주 지역은 타 지역보다 온도상승이 가장 가파르게 진행되고 있어 한라산이 기후변화 압력에 의한 산림생태계 취약성이 가장 높을 것으로 추정된다. 본 연구결과는 장기적인 관점에서 전체적으로 아고산대 산림지역의 임상이 침엽수림이 감소하는 방향으로 변화하고 있으나 그 추세는 각 지역별로 정도의 차이가 있다는 것을 보여주었다. 본 연구의 전국적이고 장기적인 아고산 지역 침엽수림 변화 정보는 향후 지역별로 수행될 상세한 멸종위기 아고산 침엽수 정밀실태조사 수행을 위한 기초자료로 활용될 수 있다.

Development of the forest type classification technique for the mixed forest with coniferous and broad-leaved species using the high resolution satellite data

  • Sasakawa, Hiroshi;Tsuyuki, Satoshi
    • 대한원격탐사학회:학술대회논문집
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    • 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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    • pp.467-469
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    • 2003
  • This research aimed to develop forest type classification technique for the mixed forest with coniferous and broad-leaved species using the high resolution satellite data. QuickBird data was used as satellite data. The method of this research was to extract satellite data for every single tree crown using image segmentation technique, then to evaluate the accuracy of classification by changing grouping criteria such as tree species, families, coniferous or broad-leaved species, and timber prices. As a result, the classification of tree species and families level was inaccurate, on the other hand, coniferous or broad-leaved species and timber price level was high accurate.

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저지대 이차림지역의 매토종자 발아특성 -예산군의 침엽수림과 활엽수림- (Germination of Buried Seeds in Secondary Forest of Basla Zone - Coniferous and Broadleaved Forest of Low Slope, Yesan-gun, Korea -)

  • 강희경;박준용;안상교;조용현;박봉주;김원태;신경준;어양준;송홍선
    • 한국환경생태학회지
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    • 제28권6호
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    • pp.705-714
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    • 2014
  • 본 연구는 이차림 잠재식생 변화의 기초자료로 제공하기 위하여 예산군의 침엽수림과 활엽수림 지상부 (현존식물)와 지하부 (매토종자 발아식물) 식생을 파악하고 비교하였다. 매토종자 발아의 관속식물은 침엽수림이 20과 27속에 딸린 28종 1변종의 29분류군이었고, 활엽수림은 18과 32속에 딸린 34종 2변종의 36분류군이었다. 국화과는 침엽수림과 활엽수림 모두 가장 많이 발아한 매토종자의 식물 집단이었고, 조사구 출현빈도는 침엽수림의 방동사니와 활엽수림의 고들빼기가 높게 나타났다. 토심별 분류군은 침엽수림이 토심 0~10cm, 활엽수림이 토심 0~5cm에서 가장 많았고, 개체수는 침엽수림과 활엽수림 모두 토심 0~2cm에서 가장 많이 나타났으며 토심이 깊을수록 감소하였다. 매토종자의 발아 개체수가 가장 많은 식물은 침엽수림과 활엽수림 모두 고들빼기이었다. 지상부와 지하부의 유사도지수는 평균 0.22로서 낮았으며, 침엽수림과 활엽수림은 유사도지수가 평균 0.40으로서 지상부와 지하부 비교보다 유사성이 높게 나타났다.

남산 지역 조류 군집의 서식 현황과 보호 및 관리방안 (Status, Protection, and Management of Bird Community in Mt. Nam Area)

  • 이우신;조기현;임신재
    • The Korean Journal of Ecology
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    • 제21권5_3호
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    • pp.665-673
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    • 1998
  • This study was conducted to clarified the relationship between bird community and forest structure and present the counterplan for protection and management of bird community from February 1993 to July 1995 at deciduous and coniferous forest within Mt. Nam area, Seoul, Korea. DBH distribution has not significant differences in each study site. Deciduous forest had more foliage coverage in all layers than coniferous forest. Total 41 species of birds, which were 16 species of resident, 14 species of summer visitor, 4 species of winter visitor, and 7 species of passage migrant were recrded in two study sites. Leaf use rate of birds was increased the increase of coverage. The number of breeding species and pairs, breeding density, and diversity index were greater in deciduous forest than coniferous forest. The number of species and pairs on bush-nesting and foraging guild were greater than other guilds. And the nuber of species and pairs on hole nesting guild were the fewest in nesting guild. Use rate of artificial nests for improvement of habitat quality was greater in coniferous forest than deciduous forest. Maintenance of bush layer, increase of coverage and leaf layer diversity, supply of artificial nests, management of large trees, and control of natural enemy were necessary for protection and management of bird community in Mt. nam area.

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