아태지역 에너지협력을 위한 일본의 역할

Ezaki T 한국에너지협의회 1995 에너지協議會報 Vol.36 No.-

環境과 조화한 砂防事業(Ⅱ) : 日本에 있어서 水邊地域의 管理와 指針 The Management and Guidelines of Riparian Zone in Japan

西門原,全槿雨,廉圭眞,江崎次夫,金炅南 江原大學校 森林科學硏究所 1998 Journal of Forest Science Vol.14 No.-

要約지난 5월 20일과 21일에 일본 삿포로시에서 平成10年度 砂防學會硏究發表會가 개최되어 기획발표 21편과 일반발표 185편의 논문이 발표되었다. 기획발표로는 火山防災 一般 6편, 地震砂防硏究會 活動報告 6편, 水邊地域의 管理와 指針 5편 및 平成9年度 土砂災害 4편이 각각 발표되었으며, 일반과제로는 斜面安定 10편, 斜面崩壞 10편, 地震 9편, 環境砂防 41편, 土砂流出 25편, 警戒·避難 11편, 砂防計劃 10편, 砂防事業 11편, 砂防構造物 10편, 火山砂防 12편, 綠化 4편, 水文 4편, 눈사태 4편, 땅밀림 4편, 土石流 18편 및 留學生 2편 등이 발표되었다. 특히 기획발표중 「水邊地域의 管理와 指針」에서는 「水邊地域의 構造와 機能」, 「洪水와 水邊形成의 相關關係」, 「土砂管理의 場으로서의 溪畔地域과 流路整備 方法」, 「住民參加에 의한 自然林 再生 努力」, 「水邊緩衝地域 設定의 制度的·社會的 課題」등 5편이 발표되었다. 이는 우리 나라의 砂防分野에 있어서 앞으로의 山地急流小河川을 親環境的인 방법으로 정비하는 데에 중요한 자료이므로 그 내용을 요약·정리하였다. ABSTRACTA meeting for Japan Society of Erosion Control Engineering took place, from May 20-21 in Sapporo, Japan, with the presentations of 21 special topics and 185 general papers. Special topics consists of 6 copies on volcanic disaster prevention, 6 copies on the activity report of Earthquake Erosion Control Engineering Society, 5 copieson the management and guidelines of riparian zone and 4 copies on debris disaster occurred in 1997. General papers consists of 10 copies on slope stability, 10 copies on slope failure, 9 copies on earthquake, 41 copies on environmental erosion control, 25 copies on debris flow, 11 copies on warning and refuge, 10 copies on erosion control plan, 11 copies on erosion control project, 10 copies on erosion control facility, 12 copies on volcanic erosion control, 4 copies on revegetation technology, 4 copies on forest hydrology, 4 copies on avalanche, 4 copies on landslide, 18 copies on debris flow and 2 other copies presented by international student.Among the special topics, 5 papers with the titles of the function and structure of riparian ?one, the interactive relation of flood and riparian zone, the management method of channel and river forest for controlling debris flow, the forest restoration efforts by native population, the law and social issue for building river riparian zone were presented in the subsection of "The Management and Guidelines of Riparian Zone". Thus, this article summarize and introduce the presented contents which are very important and can be referred to keep environmentally sound-river in the erosion control field.

녹화와 인간(Ⅳ) : 잡초를 활용한 제방 비탈면의 식생관리;The weed management of levee controlled the weed in the weed

江崎次夫,岩本徹,염규진,문진희,전근우 江原大學校 森林科學硏究所 2004 Journal of Forest Science Vol.20 No.-

제방 비탈면의 잡초관리는 상당한 노동력을 필요로 하기 때문에 풀베기 작업을 경감시키기 위해 일반적으로 잡초라고 불리고 있는 식물을 활용하여 「잡초로 잡초를 제어한다」라는 개념 하에 연구를 추진하고 있다. 제방 비탈면의 식생에는 ① 침식 및 붕괴방지, ②풀베기 작업시의 작업성 등과 같은 식물자체에 요구되는 조건, ③ 숲을 기본으로 한 농촌풍경의 향상·유지 및 ④ 걷기 편함 등이다. 황폐지나 제방 비탈면의 우점종인 식물에 대하여 이 4가지 조건에 맞추어 검토를 실시한 결과, Imperata cylindrica Beauv., Shibataea kumasaca Nakai, Sasaella kogasensis Nakai war. gracillima S. Suzuki 및 Hedera canariensis Willd.가 이용 가능할 것으로 판단되었다. Farm working also needs most of the labor on the weed management of the levee. Then, the research which controlled the weed in the weed was promoted in order to reduce this weed management. Required conditions for the levee vegetation from the viewpoint of the weed management are the following 4 points. ① the prevention of erosion and landslide. ② the improvement in the workbility at the mowing. ③ the improvement and maintenance of the rural landscape. ④ the accessibility. Next, the plants becoming dominant species in devastated land and slope of river banks were compared through these 4 conditions, and the utility was examined. As the result. Imperata cylindrica Beauv., Shibataea kumasaca Nakai, Sasaella kogasensis Nakai var. gracillima S. Suzuki and Hedera canariensis Willd. seemed to be usable. Finally, weed management method for connecting for the reduction in the mowing work using these plants was presented.

流域의 環境保全을 고려한 합리적인 林道施工에 관한 硏究(Ⅰ) : 일본에 있어서 최근의 林道事業을 중심으로 Recently forest road conservation in Japan

全權雨,江崎次夫,吳在萬 江源大學校 森林科學硏究所 1996 Journal of Forest Science Vol.12 No.-

우리나라에서는 농업분야의 경쟁력 강화를 위한 일환으로 임도사업이 전국적으로 실시되고 있으나 임도개설에 따른 土砂流出 및 水質惡化 등의 환경문제가 대두되고 있다. 따라서 임도사업의 역사가 길고 자연환경 등이 우리나라와 유사한 일본에 있어서 임도분야의 연구방향, 임도개설유역의 환경영향평가 방법, 環境親和型 林道施工 및 연구방법에 대한 자료를 정리하였으므로 앞으로의 合理的인 流域管理와 親環境的 林道事業에 유용하게 사용될 것으로 생각된다. In our country, nation-wide forest road works are being carried out as one of the efforts to bolster the international competitiveness of agriculture, however such environmental problems as sediment discharge and water quality degradation accompany such efforts more often than not. Hence, in this research report. we compile and analyze the Japanese sources dealing with the 「research direction of the forest road construction」, 「environmental impact assessment upon the watershed of the forest road construction」 , 「environmentally-sound forest road construction and its research method」 in consideration of the fact that natural environment of Japan is similar to that of our country and Japanese forest road works has a long history. We hope that this report be useful to the reasonable watershed management and the environmentally-sound forest road works.

環境과 조화한 砂防事業(Ⅰ) : 日本의 環境保全砂防 Environment-oriented erosion control works in Japan

全權雨,江崎次夫 江源大學校 森林科學硏究所 1996 Journal of Forest Science Vol.12 No.-

최근의 砂防事業은 防災空間의 확보뿐 만 아니라 周邊環境에 잘 조화되고 生物資源이 풍부한 環境空問의 확보가 강조되고 있다. 일본에서도 이와같은 노력이 1990년대에 들어 활발히 진행되고 있으므로 우리나라의 사방사업의 참고가 될 수 있도록 일본의 親環境的 砂防事業에 대한 자료를 수집, 분석하였다. 구체적인 내용은 합리적인 水邊環境 造成과 親環境型 砂防事業이며, 親環境的인 砂防事業은 砂防댐, 流路工과 護岸工, 魚道 및 水質保全工 등에 대하여 정리하였다. In recent erosion control works, securing not only the disaster prevention space but the environmental space, harmonized with surrounding environment and abundant with biological resources are emphasized. Inspired of by the fact that efforts to secure such spaces have been being briskly promoted in Japan since the beginning of 1990s. we compile and analyze the Japanese sources about the 「environmentally-sound erosion control works」 to contribute to the erosion control works of our country. Specifically, in this report, we deal with the subjects of 「establishment of the comfortable river environment」 and 「environmentally-sound erosion control works」 which includes 「erosion control dam」, 「water channel works and revetments」, 「fish routes」 and 「water quality conservation works」.

Evaluating the Effect of Jellyfish Chips on the Survival and Growth of Pinus thunbergii Seedlings Planted in a Coastal Area of Ehime Prefecture, Japan

김석우,Tsugio Ezaki,이윤태,Yukiyoshi Teramoto,전근우 강원대학교 산림과학연구소 2018 Journal of Forest Science Vol.34 No.2

This study aimed to evaluate the effectiveness of jellyfish chips in promoting the survival and growth of Pinus thunbergii seedlings in a coastal area based on a five-year field investigation from 2012 to 2016. Seedling survival rate was significantly higher in the treatment (96%) than in the control (75%) group in 2012. Furthermore, the height of five-year-old seedlings after plantation in 2012 was significantly greater in the treatment (3.41 m) than in the control (2.32 m) group (t=10.151; p-value<0.01). These results revealed that jellyfish chips can improve soil condition by enhancing moisture retention during the early growth stages and supplying nutrients to the seedlings over time. Our findings indicated that jellyfish chips could be used effectively as an organic fertilizer for growing coastal disaster prevention forests.

Geo-textile 피복자재가 인공비탈면 안정에 미치는 영향 (Ⅰ) : 식생변화, 유출수량, 부유물질량 및 토사유출 변화를 중심으로 With Vegetation growth, Runoff-water, Suspended Sediment, Sediment Yield

염규진,문진희,江崎次夫,전근우 江原大學校 森林科學硏究所 2003 Journal of Forest Science Vol.19 No.-

인공 비탈면에 있어서 Geo-textile 소재의 피복자재가 유출수량, 부유물질량, 유출토사 및 식생생육에 미치는 영향을 파악한 결과는 다음과 같다. 1. 식생의 종류조성은 12과 21속 20종 2변종 총 22종류였으며, Geo-textile 소재의 피복자재가 파종종자의 개체수 및 시험구의 피복율을 증가시키는데는 효과적이었지만 비탈면 녹화에는 한계가 있는 것으로 나타났다. 2. 유출수량은 강우량에 비례하여 증가하였고 피복자재구가 미설치구보다 최대 1/15.5배 저감되었다. 3. 부유물질량과 유출토사량은 강우량에 비례하여 증가하였다. 피복자재구가 미설치구보다 각각 최대 1/47, 1/151배로 저감되어 피복자재가 부유사 및 토사의 유출억제에 매우 효과적인 것으로 나타났다. The effects that the geo-textile mulching sheet has influenced on the runoff-water. suspended solid, sediment yield and vegetation growth are as follows in artificial slope. I. The flora of plots was composed 12 families, 21 genera, 20 species, 2 varieties, total 22 taxa. 2 The geo-textile mulching sheet is effective on increasing of introduced vegetation population, number of species and vegetation coverage, but just only with the mulching sheet it shows limit of was somewhat difficult to expect the increase of the existence ratio. 3. The amount of runoff-water increased in proportion to rainfall and a t mulched plots were about 1115.5 as decreased as that of un-mulched plots. 4. The amount of suspended sediment increased in proportion to rainfall and at mulched plats were about 1/47 as decreased as that of un-mulched plots. 5. Also, the amount of sediment yield increased in proportion t o rainfall and at mulched plots were about 1/151 as decreased as that of un-mulched plots. so, multi-function-filter is very effective on prevention of soil erosion.

Detection of Plant Saplessness with Image Processing

Keiichi Noda,Nobuo Ezaki,Hotaka Takizawa,Shinji Mizuno,Shinji Yamamoto 제어로봇시스템학회 2006 제어로봇시스템학회 국제학술대회 논문집 Vol.2006 No.10

산지 소유역에 개설된 임도가 부유사 유출에 미치는 영향

오재만,Inoue, Shoji,Ezaki, Tsugio,전근우 한국임학회 1999 한국산림과학회지 Vol.88 No.4

This study was conducted to investigate the effect of forest road on the suspended sediment yield into a stream in the small forest watershed. The samples of suspended sediment yield were collected at surveying points A and B in mountains watersheds unaffected by forest road, and at surveying point C affected by forest road. When hourly change of suspended sediment concentration was investigated, it showed the highest increase along the forest road, and the peak of suspended sediment concentration due to the watershed characteristics of each surveying point occurred before or at the same time with, the peak of discharge. This may be due to the time lag in which stagnated unstable suspended sediment moved strongly upon rainfall. Although suspended sediment load varied depending ups rainfall factors and surveying period, suspended sediment load per unit watershed flowed out 4.1 times more at the point C than at the point A and B. The suspended sediment load on 18∼19 September, 1998, strongly affected by rainfall factors, was 4.179g/sec/㏊ at the point C, and 0.343g/sec/㏊ and 0.147g/sec/㏊ at the point A and B, respectively. This load was 12 times higher at the point C than at the point A and 28 times higher than at the point B.

Temporal Change in Vertical Distribution of Woody Vegetation on the Flank of Sakurajima Volcano, Southern Kyushu, Japan

Teramoto, Yukiyoshi,Shimokawa, Etsuro,Ezaki, Tsugio,Lim, Young-Hyup,Kim, Suk-Woo,Chun, Kun-Woo Institute of Forest Science 2016 Journal of Forest Science Vol.32 No.3

This study explained vertical distributions and growth environments for woody vegetation. It had been degenerated by long-term volcanic activity of Sakurajima; vegetation and thicknesses of tephra layers and forest soils were investigated at 5 sites (250-700 m in altitude) with different altitudes localized at the northwestern-northern flanks of Sakurajima in Kagoshima Prefecture. The results in 2015 were compared with the vertical distribution of woody vegetation in 1963, when the volcanic activity of Sakurajima was relatively moderate. Thus, we investigated temporal changes in the vertical distribution of woody vegetation owing to volcanic activity over about 50 years (1963-2015). We indicated altitude decreased, the number of woody vegetation, number of species, sum of cross-sectional area of tree diameter at breast height, Fisher-Williams's diversity index ${\alpha}$, and forest soil thickness increased. However, these values were found to be degenerated when compared to climax forest values, and succession was incomplete. It seems that because the woody vegetation of the flank was affected by volcanic activity for a long time, exposing them to severe growth environments, areas with lower altitudes became distant from the craters of Sakurajima, thereby weakening the effect of volcanic activity in these areas at lower altitudes. a at the same altitudes over about 50 years (1963-2015) decreased by about 31-72%, and the sum of the cross-sectional area in tree diameter at breast heights decreased by about 14-62%. Thus, comparative growth environments for woody vegetation in 2015 were more severe than that of 1963, with respect to tephra layer thickness. In addition, for vegetation succession in the flank of Sakurajima, vegetation restoration should be promoted through the introduction of artificial woody plants covered by symbiotic microorganisms or organic materials.