• Title/Summary/Keyword: 잔디밭

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The Effect of Green Foundation on the Visual Preference (시각적 선호에 있어서 Green Foundation의 효과에 관한 연구)

  • 조동범;염도의
    • Journal of the Korean Institute of Landscape Architecture
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    • v.13 no.1
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    • pp.95-107
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    • 1985
  • This study is purposed to investigate the role of grasses as the Green Foundation effect on the visual preference to flowering tree and shrub being the principal elements of natural landscape early in the spring. As the flowering shrub materials, Rhododendron mucronulatum and Forsythia Kreana were adopted. Total 48 slides were photographed at the 8 different lawn areas with the 6 planting combinations of flowering shrub materials, and 10 landscape variables - dimensional and color - were measured and preference scores were taken by slide evaluations. The results were : 1) The visual preference to the landscape of flowering shrub in the lawn area was changed with the different lawn situations. 2) With important 4 variables, multilinear regression model was established, hence Y =40.4 + 9.6($X_1$) -7.8($X_2$) -26.8($X_3$) + 15.2($X_4$) where, Y : estimated preference score $X_1$: perimeter of flower zone $X_2$: value of green covered zone $X_3$: hue of green covered zone $X_4$: chroma of green covered zone 3) Most effective variable was 'hue of green covered zone', hence the more green the lawn area ism the more preferred landscape or the more effective green foundation is.

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Effects for the Thermal Comfort Index Improvement of Park Woodlands and Lawns in Summer (여름철 공원 수림지와 잔디밭의 온열쾌적지수 개선 효과)

  • Ryu, Nam-Hyong;Lee, Chun-Seok
    • Journal of the Korean Institute of Landscape Architecture
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    • v.42 no.6
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    • pp.21-30
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    • 2014
  • The purpose of this study was to evaluate human thermal comfort in summer by the type of greenery in parks and to explore planning solutions to supply a comfortable thermal environment in parks. The research was conducted in three different land cover types: a park with multi-wide-canopied trees(WOODLAND), park with grass(LAWN) and park with pavement(PAV) as reference sites in Hamyang-Gun SangrimPark. Field measurements of air temperature, relative humidity and wind velocity, short-wave and long-wave radiation from six directions(east, west, north, south, upward and downward) were carried out in the summer of 2014(August 21-23 and 29-30). Mean Radiant Temperature($T_{mrt}$) absorbed by a human-biometeorological reference person was estimated from integral radiation and the calculation of angular factors. The thermal comfort index PET was calculated by Rayman software, UTCI, OUT_SET$^*$ were calculated using the UTCI Calculator and the Thermal Comfort Calculator of Richard DeDear. The results showed that the WOODLAND has the maximum cooling effect during daytime, reduced air temperatures/$T_{mrt}$ by up to $5.9^{\circ}C/35^{\circ}C$ compared to PAV and lowered heat stress values despite increasing relative humidity values and decreasing wind velocity. While the LAWN had very slight cooling effects during daytime, reduced air temperatures/$T_{mrt}$ by up to $0.9^{\circ}C/3^{\circ}C$ compared to PAV, the improvement effects of the thermal comfort index was very slight. However, during nighttime the microclimatic and radiant conditions of WOODLAND, LAWN, and PAV were similar owing to the absence of solar radiation, reduction of wind velocity and an increase in relative humidity. Because the shading and evapotranspiration effects of the WOODLAND were much greater than the evapotranspiration effects of the LAWN, it can be said that the solutions for supplying comfortable thermal environment in parks are to amplify the green volumes rather than green areas. This study was undertaken to evaluate the human thermal comfort in summer of WOODLAND/LAWN parks and to determine the improvement effects of thermal comfort index. These results can contribute to the provision better thermal comfort for park users during park planning.

The Occurrence of the Weeds on the Lawn and the Effective Control System (잔디밭잡초 발생현황과 방제기술)

  • Lee, In-Yong;Kim, Chang-Seok;Lee, Jeongran;Park, Nam-Il;Park, Jae-Eup
    • Weed & Turfgrass Science
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    • v.2 no.2
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    • pp.111-121
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    • 2013
  • Literatures were reviewed to understand the weeds occurring on the lawn and the effective control methods of them. Thirty-seven species of 16 families including three species of Cyperaceae for example Cyperus sanguinolentus, nine species of Poaceae including Digitalis ciliaris, Poa repens, etc., and 25 species of broad-leaved weeds such as Artemisia princeps, Draba nemorosa, Hydrocotyle sibthorpioides were occurred on the lawns. One hundred ninety-six weed species of 53 families were occurred on a tomb graveyard adjacent to the mountain. Therefore, it is possible to be infested by the weeds occurring on the graveyard on the golf course adjacent to the mountains. There are 67 items, 32 kinds of the soil treatment herbicides including dichlobenil GR, methiozolin EC, oxaziclomefone SC, imaxaquin GR et al, and 35 kinds of the foliar treatment herbicides including metamifop EC, bifenox flucetosulfuron WG, flazasulfuron WP, trifloxysulfuron-sodium WG et al. registered at the end of May 2012 for efficient management of the weeds occurring on the lawn. For effective management of the weeds, the herbicide can be generally applied twice a year on March to April and August to September for soil treatment and once a year on June to July for the foliage treatment.

Cultivation and Using for Garden and Ground Cover Plant of Ixeris stolonifera (기획시리즈 - 화단 및 계피용 좀씀바귀 재배 이용)

  • Song, Jeong-Seop
    • Landscaping Tree
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    • s.110
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    • pp.20-22
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    • 2009
  • 햇볕이 잘 드는 양지 잔디밭이나 풀밭에 씀바귀들이 한창 피어나는 계절이다. 꽃이 노란 씀바귀나 좀씀바귀, 약간 흰색인 선씀바귀, 종종 그 중간색을 띠는 개체도 보인다. 잔디밭에 나는 것들은 잡초로 뽑아버리기 아까울 정도로 꽃이 아름답다. 이 중 좀씀바귀는 키가 작으면서 포복지로 잘 번식하며 꽃은 물론 잎 모양도 정연하여 적당한 공간에 관상 및 지피용으로 훌륭한 식물이다.

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A Study on Allocation of Amylase and Nitrate Reductase Acti ities among the organs Zoysia japonica Steud. (한국잔디에 있어서 Amylase와 Nitrate reductase의 기관별 활성분배에 관한 연구)

  • 장남기;김형기;유준희
    • Asian Journal of Turfgrass Science
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    • v.1 no.1
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    • pp.49-55
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    • 1987
  • Zoysia japonica를 부위별로 나누어서 그들간의 amylase와 nitrate reductase의 활성을 조사한 결과는 다음과 같다. 1. Amylase의 활성은 관부에서 8.36~9.46 unit/mg.rotein/hr.로 가장 높았고 이삭에서 2.04 unit/mg.rotein/hr.로 가장 낮았다. 포복경, 뿌리, 잎에서의 amylase의 활성을 각각 5.42~5.82, 3.76, 2.32~3.16 unit/mg.rotein/hr.나타내었다. 2. Nirate reductase의 활성은 빛을 많이 받는 잎에서 0.35~0.66 n mole/mg.rotein/hr.로 가장 높았고 관부에서 0.06~0.10 n mole/mg.rotein/hr.로 가장 낮았다. 이삭과 포복경에서는 각각 0.31,0.27~0.63 n mole/mg.rotein/hr.를 나타내었다. 이러한 결과로부터 저장기관인 관부나 관부 절간에서 높은 amylase의 활성을 이용하여, 양분을 이삭으로 이동시키고 있음을 알 수 있었다. nitrate reductase의 활성은 chloroplast를 갖지 않는 기관보다 광합성기관에서 더 높았다. 잔디밭에서 같이 사는 크로버와 비교해 보면 amylase의 활성이 Zoysia japonica보다 2배가량 더 높았다. 이러한 결과로부터 잔디밭에서 크로버가 더 생장력이 큼을 알 수 있었다.

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Geographical Distribution and Importance of Crabgrass (Digitaria spp.) in the United States (미국내 바랭이의 지역적 분포와 잡초로서의 중요성)

  • ;Joseph C. Neal
    • Asian Journal of Turfgrass Science
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    • v.12 no.2
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    • pp.99-106
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    • 1998
  • 미국내에서 바랭이의 지역적 분포와 각 재배작물에서 잡초로서의 중요성을 자료화하기 위하여 설문조사를 실시하였다. 총 117개의 배포된 설문지중 72개의 설문지가 회수되어 62%의 응답률을 보였다. 미극내의 농, 원예작물 재배지역에는 5종의 바랭이가 분포하는 것으로 보고되었고, 이들은 large, smooth, southern, india 그리고 blanket crabgrass 등이었다. 이들 중 약 50% 이상의 응답자가 large crabgrass를 가장 문제잡초로 인식하고 있었다. 지역적으로 smoth와 large crabgrass는 모든 위도에서 그 우점도가 인정된 반면, southern crabgrass는 우점도가 남부지역에 제한되는 것으로 보고되었다. 바랭이는 다른 작물의 재배지역보다 잔디밭에서 그 문제가 보다 심각한 것으로 보고되었다. 남부지역의 잔디밭에서는 large, southern 그리고 smooth crabgrass의 순서로, 북부지역에서는 smooth crabgrass가 large crabgrass보다 잡초로서의 문제성이 큰 것으로 보고되었다. 대부분의 응답자들은 종내변이성이 smooth와 large crabgrass에는 존재하지 않는 것으로 응답하였으나, southern crabgrass내에는 존재하는 것으로 보고되었다.

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