• Title/Summary/Keyword: SUCCESSION TREND

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Identification of ecological characteristics of Deciduous broad-leaved forest, Garasan(Mt.)·Nojasan(Mt.) at GeoJae (거제도 가라산·노자산 일대 낙엽활엽수림의 생태적 특성 규명)

  • Lee, Soo-Dong;Cho, Bong-Gyo;Lee, Gyounggyu;Yeum, Jung-Hun;Oh, Chung-Hyeon
    • Korean Journal of Environment and Ecology
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    • v.35 no.2
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    • pp.204-219
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    • 2021
  • This study was conducted to investigate and analyze the characteristics of the plant community structure of vegetation distributed on the western slope and ridge connecting Mt. Noja to Mt. Gara. This basic research was executed not only to restore and manage forest vegetation, but also to monitor the trend of change in the long term. As a result of classifying the communitise in 86 survey quadrats, the Pinus thunbergii-Platycarya strobilacea comm. and P. thunbergii-P. densiflora comm. were distributed around the lowlands. The Carpinus tschonoskii-Deciduous broad-leaved comm., Styrax japonicus-Deciduous broad-leaved comm., Acer pictum subsp. Mono-Deciduous broad-leaved comm., Deciduous broad-leaved comm., and Zelkova serrata comm. appeared in the valley and all stone areas. Quercus serrata comm., Q. serrata-S. japonicus comm., S. japonicus-Carpinus cordata comm., Euonymus oxyphyllus comm. were classified as being distributed on steep slopes with relatively high altitude. According to the succession trend of the forest, evergreen conifers will be transition to deciduous broad-leaved trees. However, deciduous broad-leaved arboreous forests, such as Carpinus tschonoskii, zelkova serrata, and Acer pictum subsp. Mono, were considered to maintain their current succession stage because not only the stratified structure was developed over about 50 years tree age, but also ecologically stabilized. As environmental factors, it was analyzed that altitude, pH, content of clay and silt, Mg++, Ca++, etc. directly or indirectly affect the distribution of plant communities.

The Attitude and Behavior toward the Inheritance of Asset and Ancestral Rites among Urban Families (도시 가족의 재산.제사상속 의식과 행동의 변화에 대한 연구)

  • 김기영;박혜인
    • Journal of Families and Better Life
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    • v.19 no.1
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    • pp.269-281
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    • 2001
  • The aims of this study is to investigate the trend of the attitude and behavior toward the inheritance of asset and ancestral rites among urban families. The aged were selected out of the continuing education center in Seoul for questionnaires to figure out the subjects above. The main results of this study are as follows: 1. For the attitude toward the inheritance of ancestral rites, it was positive for the eldest son or the one who inherited much asset or the religious organization to perform the ancestral rites. But it was negative for the married daughter or the adopted son to hold the ancestral rites. 2. For the inheritance behaviour of the ancestral rites, it is not common for the eldest son to inherit ancestral rites but common to perform it. 3. In the group who are positive to donate their property to society, it is common not to prefer the eldest son in inheriting property. In the group who are positive about preferring the eldest son in inheriting property, they preferred the eldest son in succession to an asset. 4. Most of sons, especially the eldest son, were preferred in inheriting asset and ancestral rites. And they were much more preferred in inheriting ancestral rites than asset.

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Past Vegetation of Moor in Mt. Daeam in Terms of the Pollen Analysis (대암산 습원의 이탄의 화분분석에 의한 식생변천에 관한 연구)

  • Chang, Nam-Kee;Yung-Pok Kim;In-Hye O;Yung-Hi Son
    • The Korean Journal of Ecology
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    • v.10 no.4
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    • pp.195-204
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    • 1987
  • Pollen analysis of moor peat of Daeam Mountain revealed vegetational history around Daeam Mountain. The pollen stratigraphy might be zoned into three, Zone I, Zone II and Zone III for the past 2, 200 years. The time required for amount of the accumulated peat in the moor was estimated in terms of the balance of the accumulation and decay of organic carbon of the deposit peat. Zone I(770~2, 200 yr BP) had Pinus and Quercus as main elements. Gramineae decreased while Typhaceae, Cyperaceae and spores such as Polypodiaceae increased. Zone II(300~770 yr BP) showed warming trend which is suggested by high pollen concentrations of Quercus, Juglans, Carpinus, Ulmus and by a more diverse flora of deciduous borad-leaved trees than Zone I. Pinus decreased in this zone. It suggests that the overall environment became milder than Zones I and III. Zone III(earlier than 300 yt BP) was predominantly Quercu and Pinus with amount of nonarboreal species such as Artemisia, Gramineae and Chenopodiaceae, that was grown under dry conditions. It suggests that overall environment vecome humid by comparison with the present time and it is surmised the course of boggy ground formation by a retrogressive succession.

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A Study on the Domestic Architecture of Vincenzo Scamozzi (빈첸초 스카모치(Vincenzo Scamozzi)의 주거건축에 관한 연구)

  • Lee, Eun-Jung;Hong, Seok-Joo
    • Journal of The Korean Digital Architecture Interior Association
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    • v.11 no.4
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    • pp.13-20
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    • 2011
  • Vincenzo Scamozzi as the successor of Palladio stands as a major accomplishment of the task of cleanup to the classicism in 16th century. In addition, unlike the trend seen over Palladian, he shows succession and change of Renaissance villa. "L'Idea dell' Archittectura Universale; The Idea of a Universal Architecture"(1615) is a book of Scamozz's representative. This book is represented his idea for a residential building. His concepts for a residential building were analyzed through the analysis of his book and work. Scamozzi thought that domestic architecture should be designed according to he owner's social status and reputation. These concepts as decorum and this is divided into three categories. This is a threefold order, the first category and highest encompassing reigning princess and their families, who were more or less regarded as God's representatives on earth. The second category comprised noblemen and high office holders whose houses were to be, in all respects, a degree less grand, costly and dignified than the prince's residence. The third category was made up of prominent citizens and wealthy merchants whose houses were to have only moderate commoner did not come into this classification at all. - the magnifiche, honorevoli, and commune style of speech.

Plant Community Structure & Distribution Density of Pinus thunbergii-Pinus densiflora Forest in Kojedo District, Hallyo-Haesang National Park (한려해상국립공원 거제도지구 곰솔-소나무림의 식물군집구조와 분포밀도)

  • 이경재;한봉호;김종엽
    • Korean Journal of Environment and Ecology
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    • v.12 no.4
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    • pp.361-372
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    • 1999
  • Thirty-two plots have been set up and surveyed to investigate the plant community structure and distribution density of Pinus thunbergii-P. densiflora forest in Kojedo District, Hallyo-Haesang National Park. By DCA ordination technique P. thunbergii-P. densiflora forest was classified into P. thunbergii community, P. thunbergii-P. densiflora community, and P. densiflora community. The trend of plant community succession was invalid. The results of simple regression analysis between mean DBH(cm), mean distribution distance(m), and number of individual of P. thunbergii and P. densiflora were as follows: Distribution distance(m) = 0.094$\times$DBH(cm)-0.1248, Number of individual=1,820.1$\times$(cm)$DBH^{-1.6734}$ , Distribution distance(m)=6.6805$\times$Number of $individual^{-0.5425}$ .

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A Study on University Student's Knowledge and Opinion of the Korean Traditional Foods - II. The evaluation and option for improvement on the Korean traditional foods - (남녀대학생들의 한국전통음식에 대한 지식 및 평가에 관한 연구 - II. 평가 및 개선방향에 대한 의견을 중심으로 -)

  • 이경애
    • Journal of the Korean Home Economics Association
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    • v.31 no.4
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    • pp.183-191
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    • 1993
  • This study was investigated the personal rating reason for preference, and opinion for improvement on the Korean traditional foods. Questionnaire were answered by male and female university students at 8 universities in Seoul and the results are summarized as follows. 1) General trend of subjects showed preference for traditional food in order of nutrition, appearance, taste, economics, and cooking method. While the value of food itself such as nutrition, appearance, taste was rated high, practical side such as economics, and cooking method was not so agreed. Especially female students set as lower value on cooking method. 2) As a reason for rating it low, male and female students answered without distinction that traditional food are laborious and much time is needed for cooking. 3) For the idea of improving traditional food, all students had same opinion that standardized cooking method should be developed for convenient use at home, and secondly, special salestore of traditional food should be promoted. Particularly more male students had the opinion that traditional cooking method should be succeeded to at home than female students. Summarizing some significant findings from the analysis of data, all students prefer traditional food itself relatiovely. But generally they rate it low because traditional food is difficult to cook and there are not so many chances of eating. Therefore, it is regarded that standardized cooking method and promoted special salestore for more chance of eating will activated the interest of young generation, and hence contribute to succession of tradition.

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Plant Community Structure Characteristic of the Evergreen Forest, Bijindo (비진도 상록활엽수림의 식물군집구조 특성)

  • Lee, Soo-Dong;Kim, Ji-Seok;Kim, Mi-Jeong;Kang, Hyun-Kyung
    • Korean Journal of Environment and Ecology
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    • v.30 no.2
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    • pp.228-242
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    • 2016
  • This research was conducted for understanding the evergreen forest community structure of the Bijin Island. The island was worth of vegetational value because of the representative warm temperate species such as Castanopsis cuspidata was distribute there. According to the results of community classification by TWINSPAN and DCA, the Bijin Island evergreen forest were classified by 9 communities, such as C. cuspidata, C. cuspidata-Pinus thunbergii, Neolitsea sericea-Camellia japonica, Platycarya strobilacea, Quercus serrata-Decidus broad-leaved, Alnus firma, P. thunbergii. Due to the C. cuspidata, N. sericea, Ca. japonica etc. were still dominated at canopy and under-canopy layer, so the evergreen forest will be sustain current conditions for a while if there is no artificial disturbances that were caused by human. Pl. strobilacea community will be expected to replace N. sericea and also Q. serrata-Decidus broad-leaved community will be changing caused by mutual competition. Normally, in the way of the succession process of the warm temperate forest, P. thunbergii will be expect via deciduous broad-leaved to evergreen forest such as Machilus thunbergii, C. cuspidata var. sieboldii, and N. sericea. In case of species diversity index, P. thunbergii comm.(1.2739), Q. serrata-Decidus broad-leaved comm.(1.2325), Decidus broad-leaved comm.(1.1807), and A. firma comm.(1.0854) are relatively high, while C. cuspidata and N. sericea-Ca. japonica that was dominated by evergreen species at canopy layer and P. thunbergii that was damaged by fire are relatively low(0.7380~0.8416). Soil pH was 4.72~6.33, electric conductance was 0.035~0.128dS/m, and content of organic matter was 3.4~17.4%.

The Analysis of Forest Successional Trend by Species Replacement Model in the Natural Forest (천연림의 수종 대치 작용 모델에 의한 산림천이 경향 분석)

  • 김지홍
    • Journal of Korea Foresty Energy
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    • v.22 no.3
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    • pp.1-10
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    • 2003
  • The successional status and potential natural vegetation were examined in the natural deciduous forest in Mt. Chombong area. The examination was based on the subsequent process of generation replacement by understory saplings for the dominant canopy trees within 106 20mx20m square sample plots. The transition matrix model, which was modified from mathematical theory of Markov chain, was employed to analyze the successional status of the study forest. The model suggests that study forest is still seral, and it is considered to be more than 500 years away from the steady state or climax in terms of species composition. The simulations predict a remarkable decrease in the proportion of species composition of the present dominant Quercus mongolica and Kalopanax pictus from current 42.6% and 8.1% to less than 13.3% and 0.5%, respectively, at the steady state. On the contrary, the proportions of Abies holophylla, Acer mono, Fraxinus mandshurica, Tilia amurensis, and Acer pseudo-sieboldianum will increase at the steady state. The change of predicted composition ratio was generally coincide with the result of tolerance index to be compared with the study model. The hypothesis and sensitivity of the model were also discussed to evaluate the applicability to the real situation. The overall results indicated that the present dynamics of the forest must reflect the seral state due to previous disturbance mainly by human related interference.

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Singapore 2017: Challenges and Prospects in the Post-Lee Kuan Yew Era (싱가포르 2017: 포스트-리콴유 시대의 도전과 과제)

  • KANG, Yoonhee;CHOI, Ina
    • The Southeast Asian review
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    • v.28 no.1
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    • pp.83-120
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    • 2018
  • For Singapore, 2017 was an uneasy year. The presidential election was fraught with controversy since the revised Presidential Election Act allowed only one candidate to be eligible for the election. The bitter feud between Prime Minister Lee Hsien Loong and his siblings shocked many Singaporeans. Succession planning for the next top leadership is still veiled in obscurity. The anti-globalization trend and the increasing pressure to raise the tax have become major challenges for Singapore's economy to overcome. China's continuous diplomatic pressure has called into the question Singapore's pragmatic foreign policy. Although its relations with China were back to normal, Singapore, the ASEAN chair in 2018, is still facing intractable problems in safeguarding ASEAN centrality in the growing US-China rivalry. In the meantime, Singapore has pursued its diversity and equality, heading toward a more matured multi-racial and multi-cultural society in 2017. The first female president, Halimah Yacob, served as a symbolic epitome of Singapore's emphasis on diversity and harmony among different ethnic groups and minorities. This great milestone, however, has largely been questioned by Singaporeans, as it seemed to be a political gesture that only utilized Halimah's double minority in the level of ideologies. The election of the Malay president has led Singaporeans to think about the real equity and equality among minorities, while strongly motivated to move toward a more inclusive society. In 2018, Singaporean leaders will try to resolve many challenging problems by reaffirming leadership succession planning, which is expected to lead Singapore to pursue a more integrated society.

Ecological Changes of the Larix kaempferi Plantations and the Restoration Effects Confirmed from the Results (일본잎갈나무조림지의 생태적 변화와 그 결과를 통해 확인된 복원 효과)

  • Kim, Se-Mi;An, Ji-Hong;Lim, Yun-Kyung;Pee, Jung-Hun;Kim, Gyung-Soon;Lee, Ho-Young;Cho, Yong-Chan;Bae, Kwan-Ho;Lee, Chang-Seok
    • Korean Journal of Ecology and Environment
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    • v.46 no.2
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    • pp.241-250
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    • 2013
  • Developmental process of vegetation over years after afforestation was analyzed in the Japanese larch (Larix kaempferi) plantations with different stand ages. The height and diameter of Japanese larch increased rapidly until 24 years after afforestation and tended to be blunted thereafter. The density of Japanese larch was similar with each other in the 8 and 17 years old stands but was reduced greatly in the 24 years old plantation and changing little thereafter. The floristic composition of the Japanese larch plantation did not show any clear trend depending on stand ages. The differences of species composition among plantation themselves with different ages were bigger than those between plantations and the reference stands, Mongolian oak (Quercus mongolica) stands. Japanese larch plantations showed a trend of succession to native vegetation dominated by Mongolian oak based on the results of analysis of frequency distribution by diameter class of major tree species. Species richness and diversity of all plantations were higher than those of the reference vegetation. As were shown in the above mentioned results, it can be evaluated that Japanese larch plantations practiced in the level of the functional restoration achieved successful restoration based on the floristic composition similar to the reference vegetation, the successional trend toward native vegetation, and higher species diversity compared with the reference vegetation.