Journal of the Korean Institute of Landscape Architecture (한국조경학회지)

The Korean Institute of Landscape Architecture (한국조경학회)
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A Study of Establishment Ratio of Native Tree Transplant

자생수목 이식 성공률에 관한 연구

  • Lee, Sang-Cheol (Dept. of Landscape Architecture, Graduate School, Pusan National University) ;
  • Jo, Bu-Yeon (Korea Expressway Corporation) ;
  • Choi, Song-Hyun (Dept. of Landscape Architecture, Pusan National University)
  • Received : 2015.01.19
  • Accepted : 2015.03.02
  • Published : 2015.04.30
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Abstract

To fulfill the need for reuse indigenous tree to mitigate the elimination of nature forests due to road construction, one representative method for this reuse is to transplant them and re-establish in similar conditions. In order to investigate the transplant and establishment of indigenous tree, a correlation and regression analysis was conducted by species and tree size. Data were collected for 6 years(2008~2013) in 7 construction sites in cooperation with the Korea Expressway Corporation. Regarding the transplanted indigenous trees status, the success rate of transplant was 15,519(69%) of 22,521. The tree most transplanted was Pinus densiflora(15,562), followed by Quercus spp.(6,156), Prunus sargentii(235), and P. thunbergii(154). P. densiflora and P. thunbergii belong to the conifer group while Quercus spp., Prunus sargentii belong to the broadleaf group. As a result of a contrast test, the conifer group had a significantly lower success rate of transplant than the broadleaf group. In the relation of root collar diameter and success rate of transplant, there was the tendency that the larger the root collar diameter, the lower the success rate of transplant. This study demonstrated that there is a strong negative correlation between the two factors(r=-0.730, p>0.000). The predicted regression equation of the success rate of transplant was Y= -0.811X+88.627(X: root collar diameter, Y: success rate of transplant) and the $R^2$ value for the linear equation was 0.532.

도로 건설시 훼손될 산림의 자생수목 이식 및 활착에 대해 알아보기 위해 한국도로공사의 협조를 얻어 최근 6년간(2008~2013) 자생수목 이식을 시행한 시공현장 자료를 취합하여 수종별, 규격별 이식활착률에 대한 상관관계 및 회귀분석을 실시하였다. 7개 사업단에서 실시한 자생수목 이식현황을 살펴보면 총 22,521주를 이식하였으며 그 중 69%인 15,519주가 이식에 성공하였다. 이식수종별로 살펴보면 소나무가 15,562주로 가장 많았으며, 참나무류(6,156주), 산벚나무(235주), 곰솔(154주) 등의 순이었다. 침엽수 그룹으로 소나무와 곰솔, 활엽수 그룹으로 참나무류와 산벚나무를 선정하여 대비검정을 실시한 결과, 침엽수가 활엽수보다 낮은 이식성공률을 보였다. 근원직경과 이식성공률은 근원직경이 커질수록 이식성공률은 작아지는 경향을 보였으며, 그 상관성은 상관계수(R)가 -0.730으로 부의 상관이 높은 것으로 나타났으며, 통계적으로 유의하였다. 근원직경에 따른 이식성공률 예측모형의 설명력($R^2$)은 0.532였으며, 예측 회귀모형은 Y= -0.811X+88.627(X=근원직경, Y=이식성공률)이다.

Keywords

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