• Title/Summary/Keyword: 영양지

Search Result 2,087, Processing Time 0.042 seconds

Distribution of Zostera (Zosteraceae) ana Habitat Characteristics in the Eastern Coastal Waters of Korea (동해안에서 자생하는 거머리말속 (Zostera Zosteraceae) 식물의 분포와 생육지 환경)

  • LEE Sang Yong;KWON Chun Joong;CHOI Chung Il
    • Korean Journal of Fisheries and Aquatic Sciences
    • /
    • v.33 no.6
    • /
    • pp.501-507
    • /
    • 2000

  • Distribution and habitat characteristics of Zostera (Zosteraceae) in the eastern coast of Korea were examined along with plant monohology, sediment composition and physicochemical factors of seawater from June 1998 to July 2000, The results showed that three species, Zostera marina, Z. asiatica and Z, caespitosa were found in specific habitats. The depth of habitat for Z. asiatica was deeper ($8.5{\~}15.0 m$) than that of Z. marina ($1.3{\~}5.6 m$) and Z. caespitosa ($3.2{\~}5.2 m$). Z. marina beds were observed at brackish-water, port and inner bay with the sediment type of sand or muddy sand. Habitats of Z. asiatica were restricted to the open bay with the sediment type of sand, Zostera have been described with regard to different growth forms of vegetation, flowering shoot and life history. Vegetation and flowering shoot length varied significantly with habitats; values ranged $66.8{\~}110.0 cm$ and $128.0{\~}217,8 cm$, respectively. Morphology of Z. marina varied with water depth and different substrates. Morphological characteristics of Z. asiatica showed a new phenotype at the deeper water depth. Vegetation and flowering shoots of Z. caespitosa were not significantly different between study sites (values ranged from 64.9 cm to 70.3 cm). Nutrient concentrations of seawater were higher at southern part than at middle part of the eastern coast of Korea. Distribution of Zostera in the eastern coast of Korea was dependent upon differences in water depth and habitat environments, by which affected the morphological differences were affected.

  • PDF

체육고등학교 학생들의 식습관, 영양상태 및 영양지식도 평가

  • 권희순;이연경
    • Proceedings of the KSCN Conference
    • /
    • 2004.05a
    • /
    • pp.410-410
    • /
    • 2004

  • 전문체육인을 육성하는 체육고등학교의 학생들을 대상으로 영양교육을 실시하기 전 대상 진단용 기초자료로 활용하고자 학생들의 식습관, 영양상태 및 영양지식도를 평가하였다. 연구대상은 대구체육고등학교 1학년생 59명(남학생 47명, 여학생 12명)을 대상으로 하였으며, 신체계측은 체성분 분석기(DX-200/100)를 이용하여 계측하였고 혈액생화학치는 kite법(영동제약)으로 분석하였으며, 대상자의 일반사항 및 식습관과 영양지식도는 설문지로 평가하였다.(중략)

  • PDF

Feed Value and Yield of Whole Crop Barley Varieties Depend on Organic Content (유기물함량이 총체보리 품종의 수량과 사료가치에 미치는 영향)

  • Ji, Hee-Chung;Ju, Jung-Il;Lee, Hee-Bong
    • Journal of The Korean Society of Grassland and Forage Science
    • /
    • v.27 no.4
    • /
    • pp.263-268
    • /
    • 2007

  • This experiment was carried out to evaluate the effects of organic content and to select lodging resistance for six varieties in paddy field of Chungnam province from 2006 to 2007. In this experiment, plant height was increased at the high fertile field and dry matter rate (%) per fresh matter was decreased at the high fertile soil condition but dry matter rate (%) of spike was increased. The dry matter (DM) yield showed higher in Sunwoo barley (13,520kg/ha) and Youngyang barley (12,780kg/ha) at the high fertile field. Fresh yield was also high in Wooho barely (34,720kg/ha) and Youngyang barely (33,670kg/ha) at the high fertile field but yield in high and normal fertile soil condition was not difference. Total digestible nutrients (TDN) content of Youngyang barley and Yuyeon barley was high as 69.5%, 70.3%, respectively, at the high fertile soil condition. According to this result Soman barley and Youngyang barley might be recommendable for whole crop barely in lower organic content condition of paddy rice field and Wooho barley and Soman barley with the lodging resistance and high yield is suitable for paddy field with high organic content.

  • https://doi.org/10.5333/KGFS.2007.27.4.263 인용 PDF KSCI

남해 연수연안의 거머리말 해초지 식물플랑크톤의 분포 특징

  • O, Hyeon-Ju;Lee, Sang-Yong;Kim, Jeong-Bae;Mun, Seong-Yong
    • Proceedings of the Korean Environmental Sciences Society Conference
    • /
    • 2006.11a
    • /
    • pp.283-284
    • /
    • 2006

  • 해초지와 해초가 없는 수괴에서 식물플랑크톤의 군집 특성을 비교 분석하기 위하여 해황과 해초지의 규모가 다른 가막만의 원포연안과 여자만의 백일도 주변 해역에서 식물플랑크톤을 채집하고, 수온, 염분, 용존산소, Chlorophyll a와 영양염을 2006년 2월부터 8월까지 조사하였다. 조사 기간동안 해초의 유무에 따른 수온과 염분의 차이는 보이지 않았으나, 용존산소, Chlorophyll a와 영양염 농도는 유의한 차이를 보였다. 또한 거머리말 해초지와 조사 시기에 따른 수온, 염분, 용존산소, Chlorophyll a와 영양염 농도도 유의한 차이를 보였다. 그리고, 원포의 수온은 백일도보다 낮았으나, 염분은 유의하게 높았다. 식물플랑크톤의 현존량과 종조성은 조사 시기에 따라 차이를 보였으며, 현존량은 해초지에서 낮게 나타났다.

  • PDF