• 제목/요약/키워드: valley forests

검색결과 81건 처리시간 0.029초

자연계에 있어 부유사 발생원의 특성에 관한 연구 (A research on the features of suspended sediments origination in natural world)

  • 이성기
    • 한국환경과학회지
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    • 제11권6호
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    • pp.483-488
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    • 2002
  • Suspended sediment outflows mainly by natural situation and artificial action and affects in down-stream. This research studied suspended sediments origination in forests size and mountain stream for natural situation, density for artificial action, and measured the size and possible quantity of suspended sediments origination and studied obstruction method of the generation by artificial action. As the result, I found that the size of generation is about 2~3% of forest size and the forest size which is affecting bare area of valley is about 1∼2ha. In addition, possible outflow segments quantity by artificial facilities is assumed to be maximum 200ton/ha and abstract of mountain incline for mountain development needs minimize bare area valley by make right angle with minimum size.

자연휴양림의 이용특성 및 방문동기에 관한 연구 (Studies on the Use Characteristics and Visit Motivation in Recreation Forests)

  • 전경수;김세천;송형섭;조영복
    • 한국조경학회지
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    • 제24권2호
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    • pp.43-51
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    • 1996
  • The main purpose of this study is to obtain information on users' socio-economic characteristics, pattern of main use activities, and visit motivation in recreation forests. From June to September in 1994, respondents were selected 548 adults more than 18 years old from 6 recreation forests which were classified 3 recreation forest types as 2 recreation forest in national forest, 2 in public forest, and 2 in private forest. Analysis of data was conducted through frequency and factor analysis. The most of noticeable characteristics of users were rather 30's age group, high education level, company workers, city residents. The major preference activities in recreation forest were resting, enjoying green shower, and walking. In 24 items of visit motivation, resting, releasing stress, enjoying in a cool forest & valley, and contacting close to nature were high preference, while buying special product, and contacting close to nature were high preference, while buying special product, having enough and to money, observing wildlife, and training body & mind were low preference. The remarkable difference in 3 recreation forest types didn't present. Eight dimensions of motivation were classified through factor analysis.

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Carbon Stock Variation in Different Forest Types of Western Himalaya, Uttarakhand

  • Shahid, Mohommad;Joshi, Shambhu Prasad
    • Journal of Forest and Environmental Science
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    • 제34권2호
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    • pp.145-152
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    • 2018
  • Quantification of Carbon stock has become in the contest of changing climate and mitigation potential of forests. Two different forest types, Dry Shiwalik Sal Forest and Moist Shiwalik Sal Forest in Barkot and Lachchiwala of Doon Valley, Western Himalaya are selected for the study. Volume equations, destructive sampling and laboratory analysis are done to estimate the carbon stock in different carbon pools like trees, shrubs, herbs and soils. Considerable variations are observed in terms of carbon stocks in different forest types. In Dry Shiwalik Sal Forest, carbon stock density varied between 129.81 and $136.00MgCha^{-1}$ while in Moist Shiwalik Sal Forest, carbon stock density ranged from 222.29 to $271.67MgCha^{-1}$. Tree species like Shorea robusta, Syzigium cumini, Miliusa velutina, Acacia catechu, and Mallotus philippensis had significant role in carbon sequestration. Shorea robusta had contributed highest in carbon stock due to highest density. Total of 2,338,280.165 Mg carbon stock was estimated in all the forest types.

국가중요농업유산 구례 산수유 농업지의 관속식물상 특성 (The Characteristic of Vascular Plants in Cornus officinalis Farmland in Gurye which Designated as Korea's Important Agricultural Heritage System)

  • 김진원;오충현
    • 농촌계획
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    • 제24권2호
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    • pp.101-107
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    • 2018
  • This study has been conducted to understand the relationships such as interspecific interactions between species and landscapes within and outside of agricultural land by identifying the flora features of Cornus officinalis farmlands in Gurye which designated as Korea's Important Agricultural Heritage System. For this, the flora of vascular plants was surveyed in every land uses of two representative districts. These two districts represent the own features of Cornus officinalis farming area which including land uses like forests(especially pine tree), valley, farmland(rice paddy, farms, Cornus officinalis farmland), and residence. Also differences in flora by stone wall's existence and Cornus officinalis's DBH were surveyed. As a result, Cornus officinalis farmlands showed the various vascular plants than the other land uses. According to the existence of stone wall in Cornus officinalis farmlands, there were no differences in appearance flora. But the flora in Cornus officinalis farmlands which have different Cornus officinalis' DBH(Divided into average over 15cm and under 8cm), various plants were showed in average over 15cm than average under 8cm. In conclusion, Cornus officinalis farmlands have been actively engaged in various types of land use and species exchanges, including forests, valleys, villages, and fields, and it has been confirmed that it acts as an ecological axis connecting forests to villages.

개발예정지역에서의 서식지 가치평가를 통한 보전지역 설정에 관한 연구 (A Study on Setting up Conservation Areas through Habitat Value Assessment of Developing Area)

  • 박용수;김대희;조동길;김귀곤
    • 한국환경복원기술학회지
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    • 제9권3호
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    • pp.26-38
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    • 2006
  • For both a healthy environment and sustainable development, we frame a habitat assessment method, concerning biodiversity and physical characteristics. With the method, we set up and extract conservation areas from Peace Valley Resort Development Areas which can function as habitats. Absolute and relative assessment items which are the size of area, habitation of species with conservation value, distribution of communities, functions of habitats, ratio of non-native plants, connectivity of habitats, vegetation layers of forests and age of forests, and water systems are considered on newly extracted conservation areas, and the habitat value assessment was calculated on the items in a 3-point scale. By comparing and examining 3 existing proposals for extracted conservation areas, we assess existing proposals, make an alternative proposal, and try to verify the possibility of applicability to extracted conservation areas. Proposal A and C must not be adopted since almost all conservation areas would be developed in the proposals. Proposal B, consisting of 53% development areas and 47% non-development areas, does not have enough development areas, so high density building arrangements should be encouraged in order to preserve conservation areas. Therefore, proposal B would be the best in ecological terms among the 3 proposals, if 3 conditions are considered : 1) new extracted conservation areas should be conserved; 2) 10~15m wide green-zones on both sides of the water system, which can play a role as ecological corridors, should be considered in development areas; 3) building arrangement should not interrupt the ecological corridors.

낙동정맥 삼척시 용소골 계곡의 식생구조 (Vegetation Structure of Yongso Valley in the Nakdong-jeongmaek, Samcheok-si)

  • 조현서;이수동
    • 한국환경생태학회지
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    • 제24권5호
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    • pp.582-590
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    • 2010
  • 백두대간에 대한 관심은 현황조사 및 분석, 관리 및 복원 방안 등 다양한 연구결과를 도출한 반면, 지맥인 정맥에 대한 관심은 증가하고 있으나 현황연구는 없는 상태이다. 본 연구는 향후 관리 및 복원방안을 제안하기 위한 기초연구로서 낙동정맥 중 용소골의 식생구조를 밝히고자 $10m{\times}10m(100m^2)$ 조사구 30개소를 설치하여 조사하였다. 상대우점치 및 평균상대우점치에 의한 군집분류 결과 소나무군집, 박달나무군집, 황철나무군집, 신갈나무군집, 굴참나무군집의 5개 유형이 용소골 계곡을 대표하는 군집이었다. 소나무군집은 능선부에 주로 분포하며 꼬리진달래가 출현하는 것이 특징이었고 박달나무군집은 참나무류와 경쟁을 피할 수 있는 능선부 급경사지와 완만한 전석지에 분포하였다. 단위면적당($400m^2$) 종다양도는 0.7914~0.9442이었으며 수령은 30~115년으로 층위구조가 형성된 보호가치가 있는 숲이었다.

오대산 국립공원 노인봉 일대 삼림식생의 군락분포에 관한 연구 (Community Distribution on Mountain Forest Vegetation of the Noinbong Area in the Odaesan National Park, Korea)

  • 김창환;오장근;강은옥;최영은
    • 생태와환경
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    • 제47권2호
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    • pp.103-115
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    • 2014
  • 오대산 국립공원 노인봉(해발고도 1,338 m) 일대의 산지삼림식생은 산지낙엽활엽수림, 산지습성림, 산지침엽수림, 아고산침엽수림, 아고산활엽수림, 산지관목림, 식재림으로 세분되었으며, 평지삼림식생은 하반림, 기타식생으로 암벽식생, 농경지 등이 조사되었다. 상관대분류에 의하여 구분된 각각의 산지삼림식생을 구성하고 있는 분포군락수는 산지낙엽활엽수림은 62개 군락, 산지습성림 85개 군락, 산지침엽수림 18개 군락, 아고산침엽수림 4개 군락, 아고산활엽수림 4개 군락, 산지관목림 2개 군락, 식재림 21개 군락, 하반림 1개 군락, 기타식생 7개 군락이 조사되었다. 조사된 주요 군락의 분포 비율을 보면 산지낙엽활엽수림은 신갈나무군락이 $36,970,088.196m^2$의 48.140%로 가장 높은 분포 비율로 조사되었고, 굴참나무군락이 $3,078,054.002m^2$의 4.008%, 졸참나무군락 $2,079,416.007m^2$, 2.708%를 차지하고 있으며, 노인봉일대 산지낙엽활엽수림의 78.175%는 신갈나무가 우점 또는 차우점종으로 분포하고 있다. 산지습성림은 들메나무-층층나무군락이 전체의 15.482%를 차지하고 있으며, 들메나무와 상층부의 식피율이 비슷하여 혼생군락을 이루고 있는 군락은 8개 군락으로 전체의 17.368%를 차지하고 있다. 산지침엽수림은 소나무 군락이 전체의 78.091%로서 대부분의 산지침염수림은 소나무 1종이 상층부에서 우점종으로 나타나는 군락의 양상을 나타내고 있다. 기타식생에서 아고산침엽수림은 전나무-신갈나무군락 등 총 3개 군락이 조사되었으며 오대산 국립공원 전체 식생면적의 0.005%를 차지하고 있다. 아고산활엽수립은 사스래나무군락 등 총 4개 군락이 조사되었으며 오대산 국립공원 전체 식생면적의 0.443%를 차지하고 있다. 식재림은 일본잎갈나무가 식재림 전체의 72.222%로 가장 많이 식재되었으며, 식재림이 17.721%, 잣나무가 2.613%로 3개 수종이 전체의 92.556%로 대부분이 이들 3종에 의하여 식재되어졌다. 결론적으로 오대산 국립공원 노인봉 일대의 산림식생은 신갈나무, 소나무, 피나무, 들메나무, 층층나무, 졸참나무, 굴참나무 등 소수의 수종들이 최상층부의 우점종으로 구성되어 있으며, 이들 종들과 관련된 수많은 군락들은 식생천이 및 기후적 요인들에 의하여 군락 대체가 매우 빠르게 일어날 것으로 보인다. 따라서 이 지역 일대 잠재 자연 식생의 주요종은 산지낙엽활엽수림은 신갈나무, 산지습성림은 들메나무, 산지낙엽활엽수림과 산지습성림의 경계부 중 습도가 높은 계곡은 층층나무, 들메나무, 사면부는 피나무, 신갈나무 등에 의하여 우점될 것으로 보인다. 그러나 아고산의 침염수림은 기후온난화 등에 의하여 점차적으로 낙엽활엽수의 분포비율이 증가할 것으로 보인다.