• 한국자원식물학회지
• /
• 제25권6호
• /
• pp.719-730
• /
• 2012

This study was conducted to investigate the environmental characteristics of natural habitats, and the genetic variations in samples from 19 different quadrates of Asplenium scolopendrium 10 habitats. The natural habitats of A. scolopendrium were located at an altitudes 110-973 m with inclinations of $7-30^{\circ}$. All the quadrates were located on north facing slopes. The average field capacity of the soil is 31.4%, with organic matter at 16.7%, and the pH is 5.84. The soil texture was confirmed as sandy loam in 8 habitats and silt loam in 2 habitats. A total of 214 vascular plants were identified from 10 habitats. The importance value of the herbaceous layer (H) was the highest in A. scolopendrium, at 10.4%, followed by Arachniodes standishii (7.3%), Dryopteris crassirhizoma (6.5%), and Polystichum tripteron (5.3%), which implies that the natural habitats of A. scolopendrium are affinity with ferns. The species diversity of A. scolopendrium was estimated as on average 1.09, while the dominance and evenness were 0.12 and 0.87, respectively. The result of the RAPD analysis, among 59 bands amplified with a primer, 25 (42.4%) showed polymorphism. Twenty-one individuals of 10 habitats could be classified into four groups with similarity coefficient values ranging from 0.74 to 1.0. Mt. Mullae and Geumdaebong populations shows basal branching within the 21 individuals. Ulleung-do island and Jeju-do island population forms an independent clade, respectively. Mt. Moak and Byeonsan-bando clade formed a sister to the Ulleung-do island and Jeju-do island clade.

• 한국육종학회지
• /
• 제42권4호
• /
• pp.381-389
• /
• 2010

한국의 전역에 자생하는 달래를 대상으로 육종 및 재배의 기초 자료를 얻고자 자생환경과 자생특성을 조사하였다. 자생지의 광환경은 121개의 자생지 중에서 반음지가 66개의 54.6%, 음지가 42개의 34.7%, 그리고 양지가 13개의 10.7%의 순이었다. 자생하는 장소는 밭 주변이 55개의 45.4%, 사찰 주변이 34개의 28.1%, 산 주변이 22개의 18.2%, 하천변이 7개의 5.8%, 그리고 도로변이 3개의 2.5%의 순이었다. 자생지는 $33^{\circ}N{\sim}38^{\circ}N$, $126^{\circ}E\sim129^{\circ}E$ 범위의 모든 지역에 널리 분포하였다. 자생지의 지역적인 분포를 보면 충청북도와 경상북도에 많았고 전라북도와 전라남도에는 적었다. 자생양상은 개체와 개체 사이가 밀착하여 집단을 형성하였다. 생육은 자생지역에 따라 다소 차이가 있었으나 대체로 맹아기는 9월과 익년 3월이었으며, 월동 후 3월부터 4월까지 생장하였고 추대하는 개체는 없었다.

• Journal of Ecology and Environment
• /
• 제32권1호
• /
• pp.41-45
• /
• 2009

For last 150 years, blackbirds have moved from their ancestral habitat, the woodland edge, to man-made habitats such as farmland, parks and gardens. These alternative habitats have become one of main blackbird habitats. I compared density of nests and blackbirds in parks, woodland and campus of University of East Anglia to investigate habitat preference. Blackbirds preferred the area covered by $10\sim50%$ of tree or bush patches for their foraging and nesting sites. Blackbirds were more frequently found near buildings rather than far from buildings. Nest characteristics did not affect predation rate and nest preference. This study suggests that man-made habitats may be important for avoiding predation.

• 한국환경복원기술학회지
• /
• 제21권2호
• /
• pp.77-85
• /
• 2018

The intensive habitats loss of natural organisms as a consequence of anthropogenic activities has lead to the use of alternative habitats for species conservation. We reviewed the current status of alternative habitats and suggest the improvement of alternative habitats. Most of alternative habitats regarded in this study are not following the pre-arranged consultation at environmental impact assessment. These alternative habitats are rendered useless due to the insufficient consideration of ecological characteristics of species and lack of detailed plans. A number of alternative habitats are influenced by disturbance such as environmental pollution and construction. Post-monitoring of alternative habitats are needed to estimate immigration rate of species. Post management is also needed to assess the status of population stability. Overall, low effectiveness of alternative habitats is presented in this study. According to the status survey, methods for improvement of alternative habitats are required such as detailed guidelines, establishment of post-monitoring system, improvement of habitat restoration techniques, and guidelines for management and operation of alternative habitats.

• 한국환경과학회지
• /
• 제19권11호
• /
• pp.1337-1353
• /
• 2010

This study intended to investigate environmental factors including soil and vegetation in order to understand the environmental and ecological characteristics of 12 different habitats of Iris odaesanensis. These habitats, according to investigations, are mostly located at elevation of 280 m to 1,555 m with angles of inclination ranging from 2 degree to 30 degrees. A total of 273 vascular plants are identified in 23 quadrates of 12 habitats. Dominant species of woody plants in 12 habitats are represented as Quercus mongolica in the tree layer (T1) and the subtree (T2) layer, and Lespedeza maximowiczii, Lindera obtusiloba, Rhododendron schlippenbachii in the shrub (S) layer. The importance value of Iris odaesanensis is 9.65%, as regards the herbaceous layer, and 6 highly ranked species such as Carex siderosticta (3.92%), Meehania urticifolia (2.67%), Spodiopogon cotulifer (2.58%), Aconitum pseudolaeve (2.51%), Carex bostrychostigma (2.28%) and Disporum smilacinum (2.09%) are considered to be an affinity with Iris odaesanensis in their habitats. The degree of their average species diversity is 1.32, and that of dominance and evenness are 0.08 and 0.89, respectively. The type of soil is sandy loam and loam, and the average field capacity of soil is 28.31%. Their average organic matter is 16.71%, soil pH 5.29, and available phosphorus is 9.29%. Correlation coefficients analysis based on environmental factors, vegetation and soil analysis shows that the coverage of Iris odaesanensis is correlated with pH and dominance, and species richness is positive related with species diversity.

• 한국환경과학회지
• /
• 제21권9호
• /
• pp.1087-1095
• /
• 2012

The investigation was made about distribution and ecological characteristics of host plant for Phellinus linteus at habitats in Gangwon-Do. The habitats of P. linteus are the place where the fog is much generated and there is lots of the moisture. The flora of the vascular plants in P. linteus habitats were consisted of 76 taxa; 62 species, 10 varieties and 4 formas of 62 genera of 40 families. The plants of infiltration type were found 70% around P. linteus habitats. This results shows that the natural environments of P. linteus habitat is very stable condition. The categories of vegetation were classified into two types. The host plant for P. linteus appeared 61.6% from Populus tomentiglandulosa. The first type showed up above the sea about 600m and west exposure region. The second type was investigated around the facing north region of the steep slope-land.

• 한국환경과학회지
• /
• 제17권10호
• /
• pp.1129-1137
• /
• 2008

We investigated the ecological characteristics of reed populations growing in Korea and tried to select reed populations showing better growth patterns in waste landfill leachate. To examine the growth characteristics, 14 reed populations from various habitats were collected. Four reed populations were from inland reclaimed habitats, 4 reed populations from brackish or salt marsh habitats, and 6 reed populations from fresh water habitats. Total plant biomass after the treatment with landfill leachate showed that Daebudo and Nanjido reed populations had the higher biomass with 3755 g DW/pot and 3305 g DW/pot, respectively. Reed populations being sampled from the higher salinity and landfill habitats had relatively higher total biomass than that of other reed populations. Especially reed populations from landfill habitats showed higher biomass. Reed populations from Songjiho and Daebudo, which were believed to have tolerance to salt stress, also showed good growth patterns. Population from the fresh water habitats exhibited relatively lower tolerance to leachate treatment compared to others. From the results, we could conclude that reed populations from Nanjido and Daebudo with higher biomass and better salt tolerance were able to good candidates for purification of waste landfill leachate.

• 한국환경과학회지
• /
• 제31권7호
• /
• pp.665-675
• /
• 2022

The purpose of this study was to provide basic information for judging cultivation suitability by analyzing the growing environment of Zanthoxylum schinifolium habitats in Gyeongnam-do. The site environment, soil environment and community structure were analyzed in habitats of 7 cities and counties. The habitats were distributed in slopes at 87~764 m above sea level. It was found habitats was distributed in the well-drained soil with high content of sand and soil texture of habitats was mainly loamy sand and sandy loam. Bulk density and particle density were 0.89 g/cm³ and 2.65 g/cm³ on average, respectively. The soil had 5.10 of pH, 6.41% of OM content, 0.29% of TN content, 3.84 ppm of available P content, and CEC of 12.3 cmol⁺/kg on average. The habitats were classified into four communities (Z. schinifolium-Lindera erythrocarpa, Castanea crenata-L. erythrocarpa, Pinus densiflora-Z. schinifolium, P. thunbergii-Z. schinifolium by clustering analysis. Ecological niche breadth was highest of 0.885 in site (T VI ongyeong) and lowest of 0.608 in site (Goseong).

• 환경생물
• /
• 제36권2호
• /
• pp.107-116
• /
• 2018

이 연구는 거머리말(Zostera marina)의 서식지와 비서식지에서 퇴적환경과 대형저서동물의 분포양상을 파악하는 것을 목적으로 조사를 수행하였다. 영흥도에 서식하는 거머리말은 1월과 4월 사이에 성장을 시작하며, 7월에 급성장을 보이고 11월부터 입과 마디 탈락이 시작되고 나서 겨울에는 성장을 멈추는 것으로 판단되었다. 퇴적환경은 서식지에서 Sand와 같은 조립질 퇴적물이 우세하고, Sand와 Mud가 혼합된 퇴적 양상이 강하게 나타났으며, 비서식지에서는 Slit와 같이 세립질 퇴적물이 우세하였으며, 계절적 변화는 뚜렷하지 않았다. 그 결과로 거머리말의 서식지가 비서식지와 상이한 입도조성 및 유기물함량을 보이며, 이에 따라 대형저서동물의 종조성에도 영향을 미친 것으로 판단되었다. 대형저서동물군집은 서식지에서 비서식지에 비하여 높은 출현종수와 서식밀도를 가지는 것으로 나타났으며, 이 종조성에 기초한 생태학적제지수의 평가결과, 군집의 안정성을 나타내는 지수들이 서식지에서 높은 수치를 보였다. 특히 종풍부도지수(J)의 경우는 2배 정도의 차이를 보일 정도로 큰 차이를 나타내며, 군집의 안정성에서 거머리말 서식지가 더욱 높은 것으로 파악되었다. 집괴분석(Cluster analysis)을 수행한 결과 Similarity 50에서 2개의 정점군으로 구분할 수 있었으며, 2개의 정점군은 거머리말의 서식지와 비서식지로 구분되어 나타났다.

• 식물분류학회지
• /
• 제40권3호
• /
• pp.135-144
• /
• 2010

본 연구는 줄댕강나무 자생지의 환경과 생태적 특성을 알아보기 위하여 수행되었다. 조사 결과 자생지는 해발 203-297 m의 범위에서 나타났고, 경사는 $9-17^{\circ}$, 그리고 낙엽층의 두께는 2-5 cm로 확인되었다. 식생조사 결과 4개 지역의 7개 방형구 내에 출현한 관속식물은 총 113종류였으며, 생활형은 H-$D_4$-$R_5$-e로 조사되었다. 관목층의 중요치는 줄댕강나무가 39.61%로 가장 높았고, 다음으로는 떡갈나무(6.27%), 산조팝나무와 조팝나무(4.04%), 느릅나무(3.84%) 등의 순으로 나타나 이 종류들이 줄댕강나무와 유사한 환경을 선호하는 것으로 생각된다. 상층 수목은 아교목층에 소나무(21.22%)와 떡갈나무(16.82%)가 우점하였고, 초본층은 가는잎그늘사초(18.95%)와 그늘사초(17.63%)가 높은 출현빈도와 피도를 보였다. 종다양도는 평균 1.42였고, 균등도와 우점도는 각각 0.07과 0.86으로 산출되었다. 토양분석 결과 자생지는 사양토, 점질양토, 양토로 조사되었으며, 포장용 수량은 평균 22.49%, 유기물함량은 9.39%로 나타났다. 또한 pH는 6.75 그리고 유효인산함량은 1.23 mg/g으로 조사되었다.