http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 전상호 ( Bom chul Kim (검색결과 1 건)
- 무료
- 기관 내 무료
- 유료
-
호수가두리양어장 퇴적물 및 어류배설물의 인 조성과 용출에 관한 연구
김범철,박주현,전상호 ( Bom chul Kim,Ju Hyun Park,Sang Ho Jun ) 한국하천호수학회 1994 생태와 환경 Vol.27 No.3
Fishfarming in lakes have been widespread during last decade in Korea. Feed supply and subsequent phosphorus discharge through excretion can contribute significant proportion of phosphorus loading. As well as direct discharge of dissolved phosphorus into epilimnion, the regeneration of dissolved phosphorus from fecal deposit and lost feed can be a source of phosphorus. The regeneration of sedimented particulate phosphorus is known to be affected by the fractional composition of phosphorus; adsorbed-P, nonapatite-inorganic-P, apatite-P, and residual-P. The fractional composition of phosphorus was examined for the lake sediments, fishfarm sediments deposited under the carp culture cages, and the fecal deposits of carp. TP content was 1.3, 8.2, and 15.2mg/g for lake sediment, fishfarm sediment, and feces, respectively. The proportion of labile phosphorus(adsorbed-P+ NAI-P) was lower in lake sediment(35%) than in fishfarm sediment(53%) and feces(46%). Phosphorus regeneration from sedimented particulate matters were measured by batch incubations. After one week`s incubation in anaerobic condition, the dissolved phosphorus concentration in the overlying water reached the plateaus of equilibrium; 130mgP/m^3 for lake sediment, 250mgP/m^3 for fishfarm sediment. However, the regeneration from fecal deposits continued to increase over 800mgP/m^3 until the end of 20 days` incubation. Total amount of regenerated phosphorus was 28%, 34%, and 54% of total phosphorus for lake sediment, fishfarm sediment, and feces, respectively. Phosphorus release in aerobic condition was much lower than in anaerobic condition. It can be concluded that more than half of particulate phosphorus discharge from fish culture can be regenerated easily and contribute eutrophication in lakes.
코리아스칼라연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
