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침전,훈증처리 소나무재선충병 피해목의 휨강도성능 및 경도에 관한 연구
윤석락 ( Seok Lak Yun ),정성호 ( Song Ho Chong ),서동진 ( Dong Jin Seo ),원경록 ( Kyung Rok Won ),박한민 ( Han Min Park ),김종갑 ( Jong Gab Kim ),변희섭 ( Hee Seep Byeon ) 한국목재공학회 2012 목재공학 Vol.40 No.1
This study used pine wilt disease damaged trees as raw materials The damaged woods were subjected to soaking treatment using wood vinegar, nematicide and sea water, Fumigated treatment using fumigation, and the bending strength and hardness of the timber were measured at different points of time after the treatment. In soaking treatment, the highest bending strength was obtained from wood vinegar (100 fold dilution)-soaked specimens of Pinus densiflora and the nematicide-soaked specimens of Anus tbunbergii. The highest hardness in cross section was gained from the nematicide-soaked specimens of Pin us densiflora and Anus thunbergi4 the highest hardness in radial section was obtained from the nematicide-soaked specimens of Pin us densiflora and wood vinegar (100 Fold dilution)-soaked specimens of Anus thunbergi4 and the highest hardness in tangential section was obtained from the nematicide-soaked specimens of Antis densiflora and Pinus thunbergii and there were not significantly different among the treatments. When fumigated treatment was applied, bending strength, hardness was somewhat lower in the control but were not significantly different between the treatments.
서동진,윤석락,문현식,이총규,김종갑 경상대학교 농업생명과학연구원 2010 농업생명과학연구 Vol.44 No.6
울산공단지역과 지리산지역에서 소나무림의 강우로부터 산림내 유입되는 수간류, 수관통과우, 임외우의 이온성분을 조사하여 그 특성을 분석하였다. 울산공단지역에서는 pH가 지리산지역에 비해 수간류, 수관 통과우, 임외우 모두 낮아 대기오염의 영향으로 추측할 수 있었다. EC는 수간류, 수관통과우, 임외우 모 두 울산공단지역이 높았으며, 수간류와 수관통과우에서는 양지역이 2배 정도 차이가 있었다. 이온성분은 울산공단지역에서 대체적으로 높았으며, 수간류에서 지역차가 2배 이상 나타났으며, 특히 Ca2+, Mg2+ 이 온의 농도가 지역간 차이가 높게 나타났다. 음이온 성분은 두 지역 모두 SO4 2->NO3 ->Cl- 순으로 나타났 으며, 지역간 차이가 가장 큰 이온은 SO4 2-으로써 수간류에서 토양으로 유입되어 토양의 산성화를 초래할 뿐만 아니라 산림생태계 전반에 영향을 미칠 수 있다. This study was carried out to investigate the characteristics of ions in rainwater by stem flow, through fall and rainfall in Pinus thunbergii forest in Ulsan industrial complex area and Mt. Jiri area. pH of rainwater in Ulsan industrial complex area was low as compared with those in Mt. Jiri area. EC of rainwater in Ulsan industrial complex area was mainly high and there was twice difference in stemflow and through fall as compared to Mt. Jiri area. The concentration of major ions in rainwater, especially Ca 2+ and Mg 2+ in stem flow were generally high at Ulsan industrial complex area, while anions were high in the order of SO4 2- >NO3 - >Cl - in both areas. There was a wide difference in SO4 2- concentration in the stem flow between both areas. SO4 2- from air pollutants will result into acidification of forest soils and thereafter cause damages on forest ecosystems.
서동진,윤석락,문현식,김종갑,이총규 경상대학교 농업생명과학연구원 2010 농업생명과학연구 Vol.44 No.6
This study was carried out to investigate the characteristics of ions in rainwater by stem flow, through fall and rainfall in Pinus thunbergii forest in Ulsan industrial complex area and Mt. Jiri area. pH of rainwater in Ulsan industrial complex area was low as compared with those in Mt. Jiri area. EC of rainwater in Ulsan industrial complex area was mainly high and there was twice difference in stemflow and through fall as compared to Mt. Jiri area. The concentration of major ions in rainwater, especially Ca2+and Mg2+ in stem flow were generally high at Ulsan industrial complex area, while anions were high in the order of SO42->NO3->Cl- in both areas. There was a wide difference in SO42- concentration in the stem flow between both areas. SO42- from air pollutants will result into acidification of forest soils and thereafter cause damages on forest ecosystems. 울산공단지역과 지리산지역에서 소나무림의 강우로부터 산림내 유입되는 수간류, 수관통과우, 임외우의 이온성분을 조사하여 그 특성을 분석하였다. 울산공단지역에서는 pH가 지리산지역에 비해 수간류, 수관통과우, 임외우 모두 낮아 대기오염의 영향으로 추측할 수 있었다. EC는 수간류, 수관통과우, 임외우 모두 울산공단지역이 높았으며, 수간류와 수관통과우에서는 양지역이 2배 정도 차이가 있었다. 이온성분은 울산공단지역에서 대체적으로 높았으며, 수간류에서 지역차가 2배 이상 나타났으며, 특히 Ca2+, Mg2+ 이온의 농도가 지역간 차이가 높게 나타났다. 음이온 성분은 두 지역 모두 SO42->NO3->Cl- 순으로 나타났으며, 지역간 차이가 가장 큰 이온은 SO42-으로써 수간류에서 토양으로 유입되어 토양의 산성화를 초래할 뿐만 아니라 산림생태계 전반에 영향을 미칠 수 있다.