Korean Journal of Environment and Ecology (한국환경생태학회지)

Korean Society of Environment and Ecology (한국환경생태학회)
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Studies on the Physiological Characteristics and Cambial Electrical Resistance of Street Trees in Cheonan City

천안시 가로수의 생리적 특성과 형성층 전기저항치에 관한 연구1

  • 송근준 (연암축산원대학 조경학과) ;
  • 한심희 (임업연구원 임목육종부) ;
  • 하태주 (연암축산원대학 조경학과)
  • Published : 2002.04.01
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Abstract

This study was conducted to diagnose the health of street trees with physiological characters, and to figure out the relation of physiological characters and cambial electrical resistances. Ginkgo biloba, Prunes serrulata and Salix koreensis were chosen in the Cheonan City. Soils under trees were collected to analyze dehydrogenase activities, and chlorophyll content, nitrate reductase and superoxide dismutase activities were analyzed from leaves sampled at the edge of crown in July. Cambial electrical resistances were measured in May, July and September, Soils with low dehydrogenase activity reflected the level of pollution. Chlorophyll content was the lowest in the leaves of P. serrulata at the Dongseo-street. Nitrate reductase activity of Ginkgo biloba was higher than P. serruluta and Satix koreensis. Nitrate reductase activity showed higher activity in the city than control(Independence Hall and Yonam College), but superoxide dismutase activity in the city lower than control. P. serruzatu in the Dongseo-street that cambial electrical resistance increase continuously during the growing season, showed the loss of vitality Cambial electrical resistance was negatively or positively correlated with nitrate reductase($r^2$=-0.566) and superoxide dismutase activity($r^2$=0.579). It was concluded that cambial electrical resistance might be suitable for diagnosing the tree health.

천안시내에 식재된 가로수의 건강도를 진단하기 위하여 몇 가지 생리적 특성을 측정하고, 형성층 전기저항치와 생리적 특성들간의 관계를 밝히고자 하였다. 은행나무, 벚나무, 버드나무를 대상수종으로 선정하였고. 7월에 대상 수종의 하부 토양을 채취하여 탈수소효소 활성을 분석하였으며, 수관의 잎은 엽록소 함량, 질산환원 효소, 항산화효소(SOD) 활성을 분석하는데 이용하였다. 수목의 형성층 전기전항치는 5월, 7월, 9월에 측정하였다. 토양의 탈수소효소 활성은 도심지역에서 낮은 값을 나타내 토양 오염도를 반영하였으며. 엽록소 함량은 동서대로에 식재된 벚나무가 가장 낮았다. 은행나무의 질산환원효소 활성은 다른 수종보다 높았으며 도심지역에서 높은 활성을 나타냈다. 또한 항산화효소인 SOD 활성은 도심에서 낮았다. 동서대로의 벚나무는 형성층 전기저항치가 지속적으로 상승하여 활력을 상실하였음을 보여주었다. 형성층 전기저항치는 질산환원효소($r^2$=-0.566) 및 SOD활성($r^2$=0.579)과 상관을 보임으로써 수목의 건강도 및 생리적 건강 상태를 진단하는데 유용할 것으로 판단되었다.

Keywords

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