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Shigometer를 이용한 서울과 수원 가로수의 전기저항 비교
차병진,나용준 충북대학교 농업과학기술연구소 1993 農業科學硏究 Vol.11 No.1
To compare the vitality of street trees in Seoul and Suwon, electrical resistance of cambial area (ERCA) were measured in each trees. Examined areas were 2 localities each of Seoul and Suwon. In both areas, total 611 streetl trees of 2 species, Ginkgo biloba L. and Salix pseudo-lasiogyne Lev., were examined. ERCA measuring was accomplished from August 13, 1983 to September 1, 1983, under the uniform conditions. A field ohmmeter (Shigometer, model OZ-67) was used for the measurement of ERCA. There was significant (p<0.01) correlation between ERCA and the tree diameter at breast height (DBH). In all trees, ERCA decreased with the increase of DBH. The ERCA of trees in Seoul was significantly (p(0.05 in Ginkgo biloba, and p<0.01 in Salix pseudo- lasiogyne) higher than that of Suwon. However, there was no significant difference in ERCA between foootway side and driveway side of each tree.