• Proceedings of the Korean Society of Environment and Ecology Conference
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• 2003.04a
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• pp.27-31
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• 2003

• Journal of The Korean Society of Grassland and Forage Science
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• v.8 no.3
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• pp.117-122
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• 1988

다른 生長條件(growth chamber, outdoor)과 室素施肥條件(N 0, N 60kg $ha^{-1}$')에서 자란 Perennial rye- grass잎에 있어서 葉伸長率(LER)과 伸底部位의 空間的 移動 및 細胞의 伸長등을 알아보고자, 잎 基部내 伸長部位의 O~30mm에 pin처리를 하고 일정시간후 Pin hole의 이동거리로서 長을 조사하었으며 표면복 제방법에 의해 細胞의 길이를 측정하였다. Growth chamber에서 자란 목초의 LER은 25.2mm $day^{-1}$(outdoor 목초에 비해 54.6% 증가), 생육의 공 간분포는 基部로부터 24mm까지, 최대생육은 10~13nm에서, 세포신장은 20nm까지로 관찰되었다. Outdoor 목초는 LER 16.3nm, 생육분포는 17mm까지, 최대생육은 5 ~8mm에서, 세포신장은 14mm까지었다. 질소시비구 목초의 LER은 30.3nm$day^{-1}$(무시비구 목초에 비해 61, 2% 증가), 생육분포는 基部로부터 27 mm까지, 최대생육은 13~1Smm에서, 세포신장은 21mm까지었으며, 질소무시비구 목초는 LER 21.3mm, 생육 분딘는 21mm까지 최대생육은 8~llmm에서, 세포신장은 16mm까지였다. Ligule 부위의 세포길이는 현저히 짧아졌으며, LER이 빠를때 伸長部位내 生育의 移動速度도 빨랐다.

• Korean Journal of Agricultural and Forest Meteorology
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• v.4 no.2
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• pp.65-71
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• 2002

The best environments such as crown density, temperature, light intensity and humidity have to be identified because these factors are strongly related to the growth and several physiological characteristics. The purposes of this study are \circled1 to collect basic data fer growth, \circled2 to identify the best growth environments. to achieve these purposes, oak, pine and mixed forest stands have been selected in this study. forest ginseng seeds were sown in these forest four years ago. Several environmental and growth factors have been surveyed. In general, mean tree age, DBH and average height are 20-25 years old, 14-17 cm and 7-9 m, respectively. The growths of forest ginseng grown in oak stand are better than those of pine and mixed stands.

• Journal of Environmental Impact Assessment
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• v.26 no.5
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• pp.291-302
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• 2017

The research was carried out in order to find climate factors which determine the distribution of Eurya japonica, and the potential habitats (PHs) under the current climate and climate change scenario by using species distribution models (SDMs). Four climate factors; the warmth index (WI), the minimum temperature of the coldest month (TMC), summer precipitation (PRS), and winter precipitaion (PRW) : were used as independent variables for the model. Seventeen general circulation models under RCP (Representative concentration pathway) 8.5 scenarios were used as future climate scenarios for the 2050s (2040~2069) and 2080s (2070~2099). Highly accurate SDMs were obtained for E. japonica. The model of distribution for E. japonica constructed by SDMs showed that minimum temperature of the coldest month (TMC) is a major climate factor in determining the distribution of E. japonica. The area above the $-5.7^{\circ}C$ of TMC revealed high occurrence probability of the E. japonica. Future PHs for E. japonica were projected to increase respectively by 2.5 times, 3.4 times of current PHs under 2050s and 2080s. It is expected that the potential of E. japonica habitats is expanded gradually. E. japonica is applicable as indicator species for monitoring in the Korean Peninsula. E. japonica is necessary to be monitored of potential habitats.

• Korean Journal of Environment and Ecology
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• v.35 no.5
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• pp.438-479
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• 2021

Basic information such as flora and their distribution are the key factors to consider for preserving plant diversity on a regional level. The number of plant species identified through a survey is closely related to the survey area and the number of habitats distributed within the survey area. In this study, we surveyed the flora of Mt. Maryong-san (PH) and Mt. Daeso-san (YH) located in Uljin-gun, Gyeongsangbuk-do, six and nine times, respectively. We planned to include a variety of habitats in the survey routes. As a result, we identified a total of 594 taxa composing of 112 families, 349 genera, 548 species, 10 subspecies, 34 varieties, and 2 formulas in the Mt. Maryong-san (PH) area and a total of 434 taxa composing of 89 families, 270 genera, 400 species, 9 subspecies, and 25 varieties in the Mt. Daeso-san (YH) area. Of the plants observed in the 21 habitats, the plants distributed in the transition zone around the valley and the dry grassland accounted for the highest proportion. The traditional graveyards located on the coast also served as the major habitat for the distribution of some plant species. In the two graveyards, 19 taxa of endemic plant species were surveyed. Moreover, the identified floristic target species included 1 taxon for grade V, 11 taxa for grade IV, and 24 taxa for grade III. A total of 77 taxa of naturalized plants were identified, and four of them were invasive alien plants as designated by the Ministry of Environment. The differences in the plants distributed in the area of Mt. Maryong-san (PH) and Mt. Daeso-san (YH) were mainly due to the difference in the size of each habitat distributed within the survey area. Moreover, it was judged that the entire vicinity of Mt. Daeso-san (YH) was not connected to the surrounding mountains and was an isolated area surrounded by farmland and residential areas.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2020.08a
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• pp.53-53
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• 2020

가뭄이 매년 지속됨에 따라 고랭지배추 재배지에서도 관수의 필요성이 인식되면서 관수를 실시하고 있으며, 대부분 스프링클러로 관수하고, 분수호스나 점적호스도 일부 이용하고 있으나 아직 토양수분, 토성이나 작물상태, 재배시기 등 환경요인을 고려한 과학적인 수분관리가 이루어지지 못하고 있어 고품질 안정생산을 위해서는 수분관리의 과학화가 필요한 실정이다. 물을 최소화 하면서 관비가 가능한 점적 호스 재배는 적정한 비료를 필요한 위치에 공급하는 방식으로 비료의 효율을 높이면서 환경오염을 최소화하고, 비료과다 시용에 따른 환경오염 등을 회피할 수 있는 좋은 수단이다. 본 연구는 앞으로 고랭지배추 점적호스 재배시 가뭄 극복과 효율적인 시비를 위한 적정 관비횟수를 구명하고자 하였다. 배추품종은 수호를 이용하였으며 관비횟수는 2회(20일 간격), 3회(15일), 4회(10일), 6회(7일), 관행(추비3회) 등 5처리를 두었으며 기준시비량은 N-P-K=32.0-7.8-19.8kg/10a로 하였으며 관비농도는 EC 1.2 dS/m fh 하였다. 시험은 고령지농업연구소 시험포장에서 6월 하순부터 8월 상순까지 무멀칭 노지재배를 하였다. 관비는 정식후 7일째부터 주었으며 관비량은 1회 구당 20ℓ를 주었다. 시험구배치는 단구제 3반복으로 배치하였다. 생육시기별로 초장, 엽장, 엽폭 모두 관비횟수가 많은 처리에서 생육이 좋았으며 6회 처리가 가장 생육이 좋았다. 주당 외엽수와 내엽수는 관행보다는 관비횟수가 많을수록 많아져 관비 6회에서 주당 69.7매로 가장 많았으며 주중과 구중도 관행에 비해 관수횟수가 많아질수록 높아졌으며 관비 6회에서 주중은 2,439g, 구중은 1,917g 으로 높게 나타나, 고랭지배추 관비횟수는 EC 1.2 dS/m 농도에서 6회를 한 것이 생육이 양호하였다.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.48 no.6
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• pp.434-437
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• 2003

This study was carried out to obtain basic information for environment of native area and growth characteristics under various mulching materials in Dendropanox morbifera $\textrm{L}_{EV}$, Dendropax c morbifera was grown wild at Wando area, particularly, distribution frequency was high at 20 to 280 meters above the sea level, and configuration of the ground of native area descended slowly toward the southeast. The soil characteristics of native area was pH 5.3-5.5, 8.8-9.5% in organic matter content and 19.8-22.0% in soil moisture. Growth of Dendropanox morbifera $\textrm{L}_{EV}$, was accelerated by transparent polyethylene film and black polyethylene film mulched.

• KOREAN JOURNAL OF CROP SCIENCE
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• v.4 no.1
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• pp.109-114
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• 1968

In order to investigate the growth pattern of sugar beet in Korea, this experiment was conducted using variety GW 359 at Tae-kwan-ryong, Suwon and Cheju. The results are summarized as follows; 1. At Tae-kwan-ryong, early growth stage was relatively long and during higher growing stage plants showed resistance to leaf spot disease, and vegetative maturing started from about September 15th. Top and root growth showed normal curve but it is considered that the early maturing variety will reduce the early growing period and prolong the vegetative maturing period. 2. At Suwon, the growth of top part was favorable until late of July but hereafter leaf spot disease brought death to the 25-35 leaves of top part and regenerated again in October. Consequently, sugar content of root showed changes from decrease to increase. Root weight increased from July to harvest season continunousely but showed abnormal growing curve. This indicates that Suwon is not proper place for sugar beet cultivation. 3. At Cheju, early growing stage was shorter about 15 days than that of Tae-kwan-ryong. Normal growth and long-maturing days favored the sugar accumulation in roots. But it is necessary to introduce non-bolting variety in autumn-winter season culture. 4. Sugar beet could be cultivated economically at Tae-kwan-ryong with 600-800 meter altitude for summer crop and at Cheju for winter crop, but Suwon is considered to be unfavorable for sugar beet.

• Korean Journal of Plant Resources
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• v.25 no.1
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• pp.89-95
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• 2012

This study was conducted to provide basic information for conservation and restoration through investigation of vegetation structure on the Euchresta japonica Hook. f. ex Regel (Korean endangered species) in Mt. Halla in Jeju Island. Very few individuals were discontinuously distributed and restricted at 220 m above sea level, very steep slope ($40-50^{\circ}$), rocky area of north face of Donneko Valley. For investigation of environmental condition, we established $10{\times}20\;m$ quadrat and one control $20{\times}20\;m$ quadrat in the habitats. Thirty three species were found at habitat under 10-16 m Castanopsis sieboldii tree layer (70-80%). The principal causes of threat which were investigated in this study are competition among companies, very steep slopes, artificial management of valley. For restoration and conservation of habitats, it is needed to suitable plans.

• The Korean Journal of Ecology
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• v.17 no.3
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• pp.333-344
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• 1994

Community structure and habitat characteristics of Acer mono stands were studied in Mt. Giri $(127{\circ}35'E.,\;35{\circ}18'N)$ and Mt. $Baekun(127{\circ}38'E.,\;35{\circ}05'N)$. The vegetation was investigated by the Braun-Blanquet's phytosociological method. Distribution of Acev mono was most abundant on eastern and western slopes in valley side. The community structure was composed of 4 layers and average number of species appeared in each quadrat was 24. Habitats were almost covered with exposed rocks and the surface soil was classified to clay loam. The isothermal date lines of Mt. Giri and Baekun were 130 and 120 days, respectively, which is the number of days with mean daily minimum temperature below zero during the year. The daily range of temperature was compared at 4 regions during sap extraction.