팔공산에서 식생과 토양에 미치는 산불의 영향

심학보,김원,Sim, Hak-Bo,Kim, Woen 한국생태학회 1998 Journal of Ecology and Environment Vol.21 No.5

This study was carried out to investigate the developmental process of plant community during the secondary succession and changes of soil properties in the burned areas lapsed 28 years after the forest fire in Mt.Palgong. The forest fire occurred on March, 1969 and the red pine (pinus densiflora) forest and its floor vegetation were burned down. The results are summarized as follows: the floristic composition of burned and unburned areas were composed of 49 and 48 species of vascular plants, respectively. The dominant species based on SDR4 of the burned sites were Lespedeza maximowicxii(87.75), Carex humilis (62.94), Rhododendron schippenbachii(55.78) and Miscanthus sinensis var.purpurascens (51.94). In contrast, Pinus densiflora (81.17), Quercus serrata (53.58)m Carex humilis (53.11) and Miscanthus sinenis var. purpuracens (52.42) were dominant in the unburned area. The biological spectra showed the $H-D_1-R_5-e$ type in both areas. The indices of similarity (CCs) between the two areas were 0.80. Degree of succession (DS) was 734 in the burned area and 809 in the unburned area. The species diversity (H) and evenness indices (e) in the burned and unburned areas were 2.05, 2.13 and 0.53, 0.55, respectively. Dominance index (C) in the burned and unburned areas were 0.30 and 0.32, respectively. Soil properties such as soil pH, content of organic matter, total nitrogen, total carbon, exchangeable potassium, sodium, calcium, and magnesium in burned area were comparatively higher than those of unburned area. Monthly changes of soil properties were of little significance except for some cases. These results suggest that there was relationship between trend of vegetation recovery and the changes of soil properties after the forest fire. Mixed forestation of fire-resistant species and nitrogen fixation species will be effective for reforestation after the forest fire.

무선 로드셀 기반의 시스템 서포트 하중 계측 시스템 연구

심학보,박수영,김준경,최용순,석원균,박순전,Sim, Hak-Bo,Park, Su-Yeong,Kim, Jun-Gyeong,Choe, Yong-Sun,Seok, Won-Gyun,Park, Sun-Jeon 한국전산구조공학회 2020 전산구조공학 Vol.33 No.4

초화.지피류 - 참나리

심학보,Sim, Hak-Bo 한국조경수협회 2012 造景樹 Vol.127 No.-

초화.지피류 - 붓꽃

심학보,Sim, Hak-Bo 한국조경수협회 2012 造景樹 Vol.126 No.-

섭제골 지역의 산화지 및 비산화지의 군락구조 비교

심학보,김원,Sim, Hak-Bo,Kim, Woen 한국생태학회 1993 Journal of Ecology and Environment Vol.16 No.4

1982년 4월에 발생한 산불에 의해 소나무림과 그 임상식생이 파괴된 섭제골의 산화지와 이에 인접한 비산화지에서 식생구조와 토양성분을 비교하므로써 산화지의 초기식생과 이차천이 과정을 분석하였다. 조사지에 출현되는 종수는 B1, B2지소에서 각각 25, 23종류, U1, U2지소에서 각각 32, 27종류로서 산화지에서 비산지보다 비교적 적게 나타났다. 조사지의 생활형 조성은 산화지와 비산화지 공히 H-D1-R5-e형으로 나타났다. 우점종 순위는 산화지에서 새(90.36) -억새(84.26), -산거울(71.87)순이었고, 비산화지에서는 소나무(76.80) -산거울(62.32) -털진달래(55.79)순이었다. 천이도는 산화지가 662~719로 비산화지의 684~859보다 비교적 낮게 나타났다. 종다양성지수는 산화지에서 2.1985~2.3506로 비산화지의 2.4094~2.4562보다 약간 낮은 값을 나타냈고, 또한 균등성지수는 역시 산화지에서 0.6830~0.7497로 비산화지의 0.7087~0.7301보다 약간 낮은 값을 나타내었다. 이것은 산화 이후 경과시간의 불충분에 의한 현상으로 종이 비교적 균등하게 분포하고 있음을 보였다. 조사지간의 유사도지수는 B1-B2>U1-U2>B2-U1>B1-U1>B1-U2>B2-U2순으로 나타났다. 토양내의 pH, 총질소함량, 유효인산, 치환성 칼륨은 산화지가 비산화비보다 낮게 나타났는데, 이것은 산불에 의한 열과 회분의 첨가에 기인된 것으로 생각된다. This is a report on the early vegetation and the secondary succession in the burned area of SeobJe-Go1 of $IIwasan-MY\v{o}n,\;Y\v{o}ngch\v{o}n-Gun,\;Ky\v{u}ngsangbuk-do$ Province. The forest fire occurred on April 8, 1982 and the pine forest and its floor vegetation were burned down. The investigation was done six times from August 20, 1982 to August 13, 1983. The results are summarized as follows: the floristic composition of burned areas $B_1,\;B_2$, and unburned areas $U_1,\;U_2$ were composed of 25, 23, 32, and 27 kinds of vascular plants. respectively. The biological spectra showed the $H-D_1-R_5-e$ type in both the burned and unburned areas. The species of Arundinella hirta, Miscanthus simnsis var. purpurascens and Cares hurnilis var. nana were dominant species in the burned area, while Pinus densiflorrr, Corex humilis var. nana and Rhododendron mucronulatum var. ciliafum were dominant species in the unburned area. Degree of succession of the unburned area was comparatively higher than that of the burned area. Species diversity index and evenness index of the burned area were similar to those of the unburned area. Indices of similarity in sampling sites showed that $B_1\;and\;B_2$ stands were the most similar. pH, total nitrogen, available phosphorus and exchangeable potassium of soil increased but organic matter and total organic carbon decreased after fire.

Diniconazole 처리가 일일초와 샐비어의 생장 및 개화에 미치는 영향

Sung-Hwan Choi(최성환),Jum-Soon Kang(강점순),Young-Whan Choi(최영환),Yong-Jae Lee(이용재),Young-Hoon Park(박영훈),Mi-Ra Kim(김미라),Beung-Gu Son(손병구),Hyeun-Kyeung Kim(김현경),Hong-Yul Kim(김홍열),Wook Oh(오욱),Hak-Bo Sim(심학보) 한국생명과학회 2011 생명과학회지 Vol.21 No.7

따라서 본 실험에서는 생장 억제에 효과 있는 기존의 생장억제제인 스미세븐은 고가의 생장억제제이므로 이을 대신할 수 있으며 지금까지는 주로 살균제로 사용되고 있는 빈나리의 농도별 처리가 일일초과 샐비어의 생장 및 개화에 미치는 영향에 대해서 조사하였다. 일일초와 샐비어 모두 빈나리처리에 의해서 생장이 억제되었다. 두 식물체 모두 빈나리 100 ㎎/ℓ 처리가 스미세븐 5 ㎎/ℓ보다 높은 생장억제효과를 나타내었다. 빈나리 처리에 의해서 두 식물체 모두 엽장은 감소하였으나 엽폭은 큰 변화가 없었다. 그 결과 엽형이 둥굴어지는 현상이 나타났다. 개화소요일수는 일일초과 샐비어 모두 대조구에 비해 빈나리 처리시 증가하였다. 일일초의 꽃수는 빈나리 400 ㎎/ℓ 처리를 제외하고 대조구와 큰 차이가 없었다. 샐비어의 경우 빈나리 100, 200 ㎎/ℓ 처리에 의해서 소화수가 증가하였다. This study was conducted to investigate the effects of uniconazole (Sumiseven), an existing expensive growth retardant, and diniconazole (Binnari), used as a cheap germicide, on the growth and flowering of Vinca major and Salvia splendis for the possibility of substitution for expensive growth retardants. The growths of V. major and S. splendis were retarded by Binnari treatment. The effect of Binnari 100 ㎎/ℓ treatment was higher than that of Sumiseven 5 ㎎/ℓ treatment in both plants. The length of leaves was remarkably retarded by Binnari treatment, however, the width of leaves was only slightly retarded, giving the leaf a round shape. The number of days to flowering was increased by Binnari treatment in both in V. major and S. splendis. The number of days to flowering in V. major showed no significant difference compared to the control except by treatemtn with Binnari 400 ㎎/ℓ. The number of florets of S. splendis increased with treatment with Binnari 100 and 200 ㎎/ℓ.

암모니아 완충용액에 依한 알루나이트의 공정처리에 對한 硏究(ㅣ)

沈鶴輔 서울産業大學校 1982 논문집 Vol.17 No.1

There are many processes for industrialization of alunite ore. Here we propose another process, named "method of ammonium buffer solution". It has a merit that no ??-ion is mixed in the leaching solution, so that the crystalization step is simplified, and economic. The optimum conditions of this process are as follows. 1) The optimum amount of ammonim buffer solution is 40ml per 10g. of calcinated alunite powder. 2) The optimum temperature of the reaction is 60℃. 3) The residue is washed with 15ml of washing water. In this process the reaction follows Jander' equation. The rate constant increases with the amount of solid and with temperature of reaction system. The energy of activation for the reactions(30-60℃) was 15.7㎉ per mole. The rate determining step appears to involve ionization of alunite.

α-cyanociannamic acid 의 加水分解에 對한 硏究

沈鶴輔 서울産業大學校 1975 논문집 Vol.8 No.1

The author has studied on the reaction of the hydrolysis of α-Cyanocinnamic acid(CCA)through nucleophilic addition of hydroxide ions and found that the hydrolysis of CCA is a homogeneous catalyzed system. When no catalyst is adopted, the reaction rate is proportional to the concentration of CCA but is proportional to ?? in the presence of catalysis of hydroxide ions. The evalued rate constants k₁and k₂are ?? mole??sec?? and ??, respectively.

錫의 鎔融鍍浸漬金의 副産物에 關한 硏究

沈鶴輔 충주대학교 1970 한국교통대학교 논문집 Vol.3 No.-

This investigation is carried out to obtain liquid chlorine and precipitate Sn with the electric-refining of crude SnCl₂ and SnCl₄. These crude matters are obtained from the treatment of byproducts which is resulted by the fused electric gilding of Sn.

吸收로 인한 汚染物質의 除去에 對한 小考 (Ⅰ)

심학보 서울産業大學校 1986 논문집 Vol.23 No.1