소백산국립공원 삼가지구 관속식물의 고도별 분포패턴

박환준 ( Hwan Joon Park ),안지홍 ( Ji Hong Ahn ),서인순 ( In Soon Seo ),이새롬 ( Sae Rom Lee ),이병윤 ( Byoung Yoon Lee ),김중현 ( Jung Hyun Kim ) 한국산림과학회(구 한국임학회) 2020 한국산림과학회지 Vol.109 No.1

소백산국립공원 삼가지구 관속식물의 고도별 수직분포 및 분포변화를 파악하기 위해 삼가탐방지원센터(400 m)에서 정상(1,439 m)까지 해발 100 m 단위로 등분하여 11개 구간에 대한 식물목록을 작성하였다. 현지조사를 실시한 결과 92과 235속 332종 3아종 37변종 3품종 총 375분류군이 출현하였다. 구간별 식물 종다양성 패턴을 분석한 결과, 고도가 증가함에 따라 점차 종다양성이 감소하다가 특정구간에서 증가하는 역단봉형 패턴이 나타났다. 고도에 따른 종 분포패턴과 치환성 양이온 Ca²⁺, Mg²⁺ 와 토양 pH, 유효인산, 온량지수, 조사면적 등의 환경요인이 양의 상관관계를 보였고 경사, 토양 수분, 치환성 양이온 Na²⁺이 음의 상관관계를 보였다. DCA 분석 기법을 이용하여 구간별 식분의 분포를 분석한 결과 Ⅰ,Ⅱ축 상에서 2개의 그룹으로 구분되었다. 구간별 식분의 배치는 400∼500 m 구간부터 1400∼1500 m 구간까지 순차적으로 배열되었다. 이러한 식분의 배치에 영향을 미치는 환경요인은 토양 수분, pH, K²⁺, Na²⁺, 유효인산, 경사도 등 토양 및 지형적 요인으로 나타났다. 생물다양성 보전, 지속가능한 이용에 있어서 본 연구 결과는 중요한 기초자료로서 역할을 할 것으로 기대되며, 식물종들의 생태·환경적 특징과, 분포범위를 파악하기 위해서는 지속적인 모니터링과 함께 관련 연구들을 지속적으로 발전시켜야 할 것이다. In order to evaluate the vertical distribution and distributional pattern of vascular plants in the Samga district of Sobaeksan National Park, vascular plants were surveyed along a hiking trail from the Samga Tour Support Center to the top of a mountain. The elevation range was divided into 11 sections with 100 m intervals from 400 m to 1439 m above sea level.A total of 375 taxa were listed, comprising 92 families, 235 genera, 332 species, 3 subspecies, 37 varieties, and 3 forms. The pattern of species richness along theelevational gradient showed a reverse hump-shaped trend. The species distribution pattern was positively correlatedwith the soil exchangeable cations Ca²⁺ and Mg²⁺, soil pH, available phosphate, and the warmth index. Furthermore, slope, soil moisture content, and soil exchangeable cations were significantly correlatedwith species distribution. DCA grouped herb species into two groups. Stands of each section were sequentially arranged from 400 m to 1500 m along an altitudinal gradient. Soil moisture content, soil pH, soil K²⁺ and Na²⁺, available phosphate, and slope were significantly correlated with stand distribution. This study provides important data that could be useful for conservation and the sustainable use of biodiversityin the study area. In order to understand the ecological and environmental characteristics and distribution of plant species, it will be necessary to continuously develop relative studies with continuous monitoring.

6-benzylaminopurine의 엽면살포가 나도풍란 유묘의 생장 및 개화에 미치는 영향 분석

안지애 ( Jiae An ),박형빈 ( Hyeong-bin Park ),김평범 ( Pyoung-beom Kim ),박환준 ( Hwan-joon Park ),김성준 ( Seongjun Kim ),이창우 ( Chang-woo Lee ),이병두 ( Byoung-doo Lee ),백주형 ( Ju-hyoung Baek ),김남영 ( Nam-young Kim ),황정 한국환경복원기술학회 2023 한국환경복원기술학회지 Vol.26 No.6

Sedirea japonica is one of the critically endangered species in South Korea mostly due to artificial harms such as illegal collection and habitat destruction. Therefore, artificial propagation through improving germination rate, increasing growth, and controlling flowering is meaningful for the conservation and reintroduction of S. japonica. It is suggested that cytokinins are one of the multi-factors that contribute to plant growth and floral responses. Especially, exogenous cytokinins have been known to induce or promote shoot growth or earlier flowering in orchids. Therefore, it was investigated how the application of 6-benzylaminopurine (BA) influenced the growth and inflorescence of S. japonica. A foliar spray containing BA at 100, 200, 300, and 400 ppm was applied from 1st July to 30th December 2021. Leaf length, leaf length growth rate, leaf width, and width and length ratio were measured as growth-related factors. Visible inflorescence rate, inflorescence length, the number of flowers per inflorescence, and the distance between the stalks were measured as flowering-related factors. Growth-related factors except for leaf growth rate were not affected by BA treatments, while leaf growth rate was significantly increased by 200 ppm of BA treatment. The visible inflorescence rate increased by 200 ppm of BA treatment, and there seems an optimal concentration and threshold of BA treatment. An iterative experiment with more seedlings and measurement factors would be helpful to figure out the effects of exogenous BA treatment on S. japonica, and it can be applied for mass propagation.

경인 아라뱃길의 외래식물 분포 현황

안지홍 ( Ji-hong An ),김중현 ( Jung-hyun Kim ),박환준 ( Hwan-joon Park ),김선유 ( Sun-yu Kim ),박성애 ( Sung-ae Park ) 한국물환경학회(구 한국수질보전학회) 2017 한국물환경학회지 Vol.33 No.3

This study was carried out to investigate the distribution of alien plants in the Gyeong-In Ara Waterway. The alien plants were a total of 82 taxa: 17 families, 63 genera, 80 species, and 2 varieties. This number corresponds to 25.5% of the alien plants identified in Korea. The proportion of alien plants in every year increased from upstream to downstream. Given our analysis of vegetation stratification, a riverbank was covered with artificial materials to prevent vegetation from growing; it had a step-type cross section. The flood plain consisted of the waterfront area. The array of vegetation was not a typical dispersion, and terrestrial and alien plants dominated the Gyeong-In Ara Waterway. Evaluation of naturalness based on the vegetation stratification showed grade 3 or 4. In order to solve a problem, the method and level of restoration should be chosen based on diagnostic assessment. Therefore, we need to restore the step-type cross section as pool type one. From waterfront to bank in this waterway, we recommend introducing native plants by imitating reference species composition. Since the invasion by alien plants is expected to be accelerated by the continuous artificial disturbance,we recommend quantitative investigation of the invasion by alien plants and monitoring the change of distribution.

바다방석고둥육의 동결저장중 단백질조성과 근육조직의 변화

송대진(Dae-Jin Song),김창용(Chang-Yong Kim),박환준(Hwan-Joon Park) 한국식품영양과학회 1994 한국식품영양과학회지 Vol.22 No.6

바다방석고둥육의 보수성은 생시료의 경우 70%를 나타내었으며 -30℃ 동결저장은 동결직후에 비해서 거의 변화가 없었다. 그러나 동결저장 6개월째에 -18℃에서는 47%, -25%에서는 52%로서 저장기간이 길어질수록 보수성의 저하가 현저하였다. 근육단백질의 용출성은 근형질단백질과 기질단백질은 동결온도와 저장기간에 상관없이 비교적 안정하였으며, 근원섬유단백질의 용출성은 동결저장온도가 높고 저장기간이 장기화할수록 감소하였다. 근육조직구조의 변화에서 바다방석고둥의 근섬유는 평활근으로 횡단면과 종단면의 구분이 없이 가느다란 근섬유가 근육조직내에 치밀하게 분포하였는데, 중간부로 갈수록 약간 굵은 근섬유가 zig zag로 얼커져 있는 상태였다. 동결저장중의 조직구조는 동결저장온도가 높을수록 빙결정의 성장을 볼 수 있었으며 -18℃에서 3개월 저장한 조직에서는 근세포의 응집에 의해 공간 면적이 넓어지는 경향을 나타내었다. 그리고 해동후의 근육조직구조는 1개월 저장까지는 저장온도에 관계없이 잘 복원되었으나 -18℃에서는 복원 불충분에 의한 공간이 많이 남아 있었다. 이상의 결과에서 탈각후 전처리 한 바다방석고둥의 품질보존면에서는 일반 가정용냉동고에 채택되고 있는 -18℃와 -25℃의 동결저장온도는 3개월 이하의 저장에 효과적이며, -30℃에서의 동결저장은 보수성 및 근원섬유단백질의 용출성의 결과에서 비교적 장기저장에 적합한 동결저장온도로 검토되었다. To investigate the quality changes during frozen storage, top shell, Omphalius pfeifferi capenteri, was stored at -18℃, -25℃ and -30℃ immediately after shelling and water holding capacity, protein composition and histological features were examined with the lapsed period of the storage. During the storage period, amount of free drip was increased with higher frozen temperature and longer frozen period, but with the longer storage period, the lower water holding capacity was observed. The extractability and composition of muscle protein, sarcoplasmic protein and stroma protein were rather stable regardless of frozen temperature and frozen storage period. However, the extractability of myofibrillar protein was decreased with higher frozen temperature and longer frozen storage period. On the changes of muscle tissue structure, following points were observed. 1) In the muscle tissue structure of fresh sample, fine muscle fiber was closely distributed all over the tissue regardless of cross and longitudinal section. 2) In tissue structure under frozen state, it was observed that ice crystals apparently grew with the higher storage temperature. Empty spaces between muscle bundles which were formed by aggregation of muscle fiber were observed after 3 months storage at -18℃. 3) Tissue structure in thawed state was restored satisfactorily after 1 month storage regardless of storage temperature. After 3 months storage at -30℃, muscle tissue was well restored, but at -18℃, empty spaces were apparent due to incomplete restoration.