한국농림기상학회지, 제 7권 제4호(2005) (pISSN 1229-5671, eISSN 2288-1859)
Korean Journal of Agricultural and Forest Meteorology, Vol. 7, No. 4, (2005), pp. 258~264
ⓒ Author(s) 2014. CC Attribution 3.0 License.


숲 가꾸기 임지의 소나무좀 발생과 후식 피해

구관효(1), 이정환(2), 김종갑(3)
(1)경상남도산림환경연구원, (2)경상대학교 농업생명과학연구원, (3)경상대학교 산림과학부

(2005년 10월 12일 접수; 2005년 12월 01일 수락)

Secondary Damage and Adult Emergence of Pine Bark Beetle
(Blastophagus piniperda) in Tended Forests

Kwan-Hyo Goo(1), Jeong-Hwan Lee(2), Jong-Kab Kim(3)
(1)Gyeongsangnam-do Forest Environment Research Institute. Jinju 660-870, Korea
(2)Institute of Agriculture and Life Science, Gyeongsang National University, Jinju, 660-701, Korea
(3)Division of Forest Science, Gyeongsang National University., Jinju 660-701, Korea

(Received October 12, 2005; Accepted December 01, 2005)

ABSTRACT
The objectives of this study were to study 1) emergence of pine bark beetles, 2) larval density in residual timber on Idlest land by each felling season, and 3) the secondary damage rates in the tended forest. Pine forest land which had undergone tending had a higher secondary damage ratio 59.6% by pine bark beetles than forest land that was not tended 2.8%. The number of escape holes averaged 11.3 0.31 per 250 cm2 on the bark of leaf trees in the tended forest. The number of escape holes was higher in the Jinju site than in the Hamyang site. The larval habitat density of pine bark beetles as compared with each felling period was higher after mid-October than in forests tended early in October. Thus, forests should be tended before early October in order to prevent secondary damage from pine bark beetles. Secondary damage in the tended forest was higher in the upper part 75.5% of the tree crown than in the lower part 49.2%. The damage was higher in terminal shoots 80% than in lateral shoots 48%. Therefore, secondary damage by pine bark beetles can cause deterioration of the elongation growth of the forest trees. In conclusion, if by-products of tended pine forest forests are neglected, they will be utilized as a propagation site for pine bark beetles (Blastophagus piniperda L). The propagated adults will damage the tender shoots of the leaf trees and thus seriously limittheir elongation.

Keyword: fine bark beetles, Blastophagus piniperda, Secondary damage, Tended forest, Pinus densiflora

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