• Korean Journal of Remote Sensing
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• v.36 no.2_2
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• pp.237-247
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• 2020

Here, we generated maps of primary production in the coastal waters of the East Sea using sea surface chlorophyll-a concentrations (CHL), photosynthetically available radiation (PAR), euphotic depth induced by GOCI along with sea surface temperature (SST) from satellites of foreign countries as input parameters, and carried out a sensitivity analysis for each parameters. On 25th of July in 2013 when a wide cold waters appeared and on 13th of August in 2013 when a big harmful algal bloom existed in the study area, it shows high productivities with averages 1,012 and 1,945 mg C m^-2 d^-1, respectively. On August 25, 2013, when the cold waters and red tide retreated, it showed an average of 778 m^-2 d^-1, similar to the results of the previous analysis. As a result of the sensitivity analysis, PAR did not significantly affect the results of the primary production, but the euphotic depth and CHL showed aboveaverage sensitivity. In particular, SST had a large influence to the results, thus we could imply that an error in SST could lead to a large error in the primary production. This study showed that GOCI data was available for primary production study, and the accuracy of input parameters might be improved by applying GOCI, which can acquire images 8 times a day, making it more accurate than foreign polar orbit satellites and consequently, it is possible to estimate highly accurately primary production.

• Journal of Fisheries and Marine Sciences Education
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• v.20 no.3
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• pp.400-409
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• 2008

The purpose of this study is to examine annual changes of coastal fisheries production in the shore of Jeonbuk Province in Korea. The catch data of an experimental vessel that used dredge nets were used to study fish species and catch per unit of fishing effort carried out from April 2002 to November 2004. The total number of fish species caught in 2002 was 23, and 15 in 2004. Total number of individuals were 6,008 and their total weight was 376.38 kg in 2002. In 2004, total number of fishes was 2,469, and their weight was 211.99 kg. The annual changes in fisheries production in the western coast of Korea were also analyzed from 1990 to 2007. The total near shore fisheries products in Korea has been relatively stable around 1,4000,000 metric tons to 1,8000,000 tons during this period. Similarly the Chungnam Province's annual fish catch had steadily risen from about 51,187 tons in 1990 to 85,637 tons in 2007. However, Jeonbuk Province's annual fish catch declined dramatically at around 133, 000 tons in 1990 to 45,000 tons in 2007. In summery, while the overall Korea's fisheries production has been stable over the past decade, that of Jeonbuk Province suffered drastic decline in the period. This decline was reflected in the decreased number of fish species, total individuals, and total catch in surverys performed with an experimental vessel.

• Journal of Korea Foresty Energy
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• v.7 no.1
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• pp.22-27
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• 1987

Above ground biomass production of one-year-old hybrid poplars was investigated to select the best clones which are suitable for short rotation forestry. The results were as follows: 1. Average dry weight of Populus alba X P. glandulosa Fl clones was 2.86 for stem,0.41 for branches 0.70 for leaves and 3.97 t/ha for total. and the ratios of green weight to dry weight were 0.47 for stem,0.36 for branches,0.31 for leaves and 0.42 for total. Dry weight of Populus nigra X P. maximowiczii Fl clones was 1.48 for stem, 0.54 for branches.0.71 for loaves and 2.73t/ha for total, and the ratios of green weight to dry weight were 0.42 for stem. 0.37 for branches, 0.28 for leaves and 0.36 for total. 2. Biomass production (green and dry weight)of Populus alba X P. glandulosa F1 clones can be predicted by diameter measurement only, but biomass production of Populus nigra X P. maximowiczii F1 clones can not be predicted by any of investigated characteristics. 3. Dry weight distribution of pepulus alba X P. glandulosa Fl clones were 73$\%$ for stem, 10$\%$ for branches and 17$\%$ for leaves, and dry weight distribution of P. Populus nigra X P. maximowiczii F1 clones were 54$\%$ for stem, 20$\%$ for branches and 26$\%$ for leaves.

• Journal of Korea Water Resources Association
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• v.52 no.9
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• pp.637-645
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• 2019

Among various ecosystem services provided by the basin, this study deals with water yield (WY) estimation in the Bagmati basin of Nepal. Maps of where water used for different facilities like water supply, irrigation, hydropower etc. are generated helps planning and management of facilities. These maps also help to avoid unintended impacts on provision and production of services. Several studies have focused on the provision of ecosystem services (ES) on the basin. Most of the studies have are primarily focused on carbon storage and drinking water supply. Meanwhile, none of the studies has specifically highlighted water yield distribution on sub-basin scale and as per land use types in the Bagmati basin of Nepal. Thus, this study was originated with an aim to compute the total WY of the basin along with computation on a sub-basin scale and to study the WY capacity of different landuse types of the basin. For the study, InVEST water yield model, a popular model for ecosystem service assessment based on Budyko hydrological method is used along with ArcGIS. The result shows water yield per hectare is highest on sub-basin 5 ($15216.32m^3/ha$) and lowest on sub-basin 6 ($10847.15m^3/ha$). Likewise, built-up landuse has highest WY capacity followed by grassland and agricultural area. The sub-basin wise and LULC specific WY estimations are expected to provide scenarios for development of interrelated services on local scales. Also, these estimations are expected to promote sustainable land use policies and interrelated water management services.

• 농업기술회보
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• v.46 no.6
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• pp.20-21
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• 2009

대체에너지 바이오연료 "유채" 최근 온실가스의 대량배출로 인한 지국온난화 문제해결과 더불어 고유가 시대의 대체에너지로 부상하고 있는 바이오연료(바이오디젤를 생산할 수 있는 유채에 대한 관심이 높아지고 있다. 유채는 동계작물로 종자의 약 40~45%가 기름성분이며, 지방산 중 올레인산이 많이 함유되어 바이오디젤 생산에 적합한 식물로 겨울철 유휴농지를 활용하여 재배하면 농가소득과 더불어 농촌경제 및 관련 산업의 활성화에도 도움이 될 것이다. 유채는 파종시기와 방법 및 파종 후 관리여부에 따라 생산량의 차이가 심하므로 생산량의 증대를 위해서는 파종시기의 재배법을 잘 숙지하여 재배한다.

• Economic and Environmental Geology
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• v.26 no.3
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• pp.371-382
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• 1993

Compilations of thermal conductivity and radiogenic heat production on 20 typical rock types provide a convenient summary. These compilations allow estimates to be made of the radioactive heat generation for the continental crust and thus heat flow anomalies of tectonic origin to be isolated.

• Proceedings of the Korean Society for Bio-Environment Control Conference
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• 2002.11a
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• pp.86-128
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• 2002

1. 채소류 수출확대방안 가. 생산 및 수출동향 1). 생산동향 o 채소류 면적은 정체상태에 있으나 수출되는 시설채소 면적은 소비자의 고품질 채소수요 증가에 힘입어 재배면적이 매년 증가추세에 있음 - 시설채소 재배면적 : (90) 40 $\longrightarrow$ (00) 91천ha(128%↑) o 시설채소 생산량은 재배면적의 증가와 재배기술의 발전으로 생산량이 대폭 증가하였음 - 시설채소 생산량 : (90) 1,017 $\longrightarrow$ (00) 3,247천톤(219%↑) (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.363-365
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• 2003

개조개(Saxidomu purpuratus)는 우리나라 전 연안에 분포하고 있으며, 연평균 생산량은 약 약 7,300들 정도가 어획되어지며, 경남 남해안 생산량이 전국 생산량의 약 73% 이상을 차지하고 있다. 본 종은 2001년부터 TAC 실시 대상 어종으로 선정되어 자원이 관리되어지는 실정에 있다. 따라서 개조개 자원을 보다 더 합리적으로 관리하기 위해서는 이 자원에 대한 자원생물학적 특성치인 자연사망계수, 어획사망계수, 생잔율, 어획개시연령 정확한 정보가 있어야만 효율적이고 종합적인 관리 발안을 수립할 수 있을 것이다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2003.05a
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• pp.113-114
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• 2003

굴은 세계적으로 100∼120종이 알려져 있으나, 우리나라에서는 주로 남해안의 청정해역에서 생산되며 산업적으로 가장 중요한 양식 굴은 참굴 (Crassostrea gigas)이다. 굴은 10∼3월에는 주로 생굴로 식용하고 있고, 4∼6월까지는 통조림과 IQF 등의 가공원료로 이용하고 있다. 우리나라의 굴 생산량은 매년 20 여만 M/T내외로서, 이중처리동결품 (IQF 18,000 M/T 내외, 통조림 5,000 M/T, 건굴 400 M/T, 그리고 굴젓갈등의 염신품으로 300M/T정도, 즉 생산량의 약13%만이 가공품 원료로 이용되고 있을 뿐 생산량의 대부분이 생굴로 소비되고 있는 실정이다. (중략)

• Proceedings of the Korean Society of Fisheries Technology Conference
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• 2000.05a
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• pp.132-133
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• 2000

남해안에서 주로 어획되는 멸치의 생산량은 대체로 년간 16만톤에서 25만톤 정도로, 타어종에 비해 생산량이 많은 주요연안어종이다. 멸치는 주로 건제품인 마른멸치 및 멸치젓갈과 같은 염신품으로 가공되는데, 이 중 마른멸치는 옛부터 우리나라에서 애용되어온 전통기호식품 중의 하나로 자건품(煮乾品) 총생산량의 90% 이상을 차지하고 있으며, 일기에 따라 다소 변동이 있으나 년간 15천톤에서 25천톤 정도 생산된다. (중략)