全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

黄海、东海上层海水磷循环的同位素示踪研究

, PP. 49-57

Keywords: 32P,33P,停留时间,吸收速率,输出通量,东海,黄海

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用超低本底液闪β计数的方法,测定了春季黄海、东海海水中溶解态、悬浮物、筛绢颗粒物和雨水中天然32P和33P的比活度.结果显示,上层海水各相33P,32P的比活度相当低,其中TDP的32P,33P比活度的浓度最高,悬浮物次之,筛绢颗粒物最低.海水各相中33P与32P活度比值从TDP到悬浮物、筛绢颗粒物逐渐增大,反映出食物链传递过程中磷的年龄逐渐增加.根据稳态模式的估算结果,海水各相中磷的停留时间具有明显的区域变化特征,其中近岸和内陆架溶解磷的停留时间比外陆架短,仅为3~4d,意味着近岸和内陆架海区低浓度的磷也可能维持高生物生产力的运转.利用稳态模式还估算出浮游植物的碳同化通量为189~814mg/(m2·d),浮游动物的碳摄食通量为10~161mg/(m2·d).此外,通过比较雨水32P,33P的输入通量和海水32P,33P积存量,利用质量平衡方法估算出上层海水POC输出通量为102~972mg/(m2·d).

References

[1]  HECKY R E,KILHAM P.Nutrient limitation of phytoplankton in freshwater and marine environments:A review of recent evidence on the effects of enrichment[J].Limnology and Oceanography,1988,33:796-822.
[2]  张平 沈志良.营养盐限制的水域性特征[J].海洋科学,:.
[3]  NIXON S W.Nutrients and coastal waters:too much of a good thing?[J].Oceanus,1993,36:38-47.
[4]  LAL D,LEE T.Cosmogenic 32p and 33p used as tracers to study phosphorus recycling in the upper ocean[J].Nature,1988,333:752-754.
[5]  林建云 傅天保.海水中磷的形态分析[A]..海洋污染物分析方法[M].北京:海洋出版社,1992.74-78.
[6]  BENITEZ-NELSON C R,BUESSELER K O.Measurement of cosmogenic 32p and33p activities in rainwater and seawater[J].Analytical Chemistry,1998,70:64-72.
[7]  LEE T,BARG E,LAL D.Studies of vertical mixing in the Southern Bight with cosmogenic radionuclides 32p and 7Be[J].Limnology and Oceanography,1991,36:1 044-1 053.
[8]  WASER N A D,BACON M P.Wet deposition fluxes of cosmogenic 32p and 32p and variations in the 32p/32p ratio at Bermuda[J].Earth and Planetary Science Let t ers,1995,133:71-80.
[9]  BENITEZ-NELSON C R,KARL D M.Phosphorus cycling in the North Pacific Subtropical Gyre using cosmogenic32P and 33p[J].Limnology and Oceanography,2002,47:762-770.
[10]  陈清潮 陈亚瞿 胡雅竹.南黄海和东海浮游生物群落的初步探讨[J].海洋学报,1980,2(2):149-157.
[11]  孟凡 黄凤朋 马兆党 等.黑潮及其邻近海域浮游动物的初步报告[A]..黑潮调查研究论文选(一)[M].北京:海洋出版社,1990.97-105.
[12]  MARSHALL S M,CONOVER R J,ORR A P.On the biology of Calanus finmarchicus:Ⅻ.The phosphorus cycle:excretion,egg production,and autolysis[J].Journal of the Marine Biological Association of the United Kingdom,1961,41:463-488.
[13]  HANEY J F.An in situ method for the measurements of zooplankton grazing rates[J].Limnology and Oceanography,1971,16:970-977.
[14]  WILLIAMS P J L B,LEFEVRE D.Algal 14C and total carbon metabolisms.1.Models to account for the physiological processes of respiration and recycling[J].Journal of Plankton Research,1996,18:1941-1959.
[15]  CORNER E D S.Phosphorus in marine zooplankton[J].Water Research,1973,7:93-100.
[16]  YIN K,QIAN P Y,WU M S,et al.Shift from P to N limitation of phytoplankton biomass across the Pearl River Estuarine plume during summer[J].Mar Ecol Prog Ser,2001,221:17-28.
[17]  CARACO N F.Disturbance of the marite phosphorus cycle:a case of indirect effects of human activity[J].Trends in Ecology & Evolution,1993,8:51-54.
[18]  BENITEZ-NELSON C R,BUESSELER K O.Temporal variability of inorganic and organic phosphorus turnover rates in the coastal ocean[J].Nature,1999,398:502-505.
[19]  WASER N A D,BACON M P,MICHAELS A F.Natural activities of 32P and 33p and the 33p/32p ratio in suspended particulate matter and plankton in the Sargasso Sea[J].Deep Sea Research Ⅱ,1996,43:421-436.
[20]  ANGEL M V.Detrital organic fluxes through pelagic ecosystem[A].Flows of energy and materials in marine ecosystem[M].New York:Plenum Press,1984.475-516.
[21]  LONGHURST A R,HARRISON W G.Vertical nitrogen flux from the oceanic euphotic zone by diel migrant zooplankton and nekton[J].Deep Sea ResearchⅡ,1988,40:903-924.
[22]  MICHAELS A F,SILVER M W.Primary production,sink fluxes and the microbial food web[J].Deep Sea Research Ⅱ,1988,35:473-490.
[23]  POMEROY L R,MATHEWS H M,MIN H S.Excretion of phosphate and soluble organic phosphorus compounds by zooplankton[J].Limnology and Oceanography,1963,8:50-55.
[24]  STOCKNER J G,SHORTREED K S.Algal picoplankton production and contribution to food webs in oligotrophic British Columbia lakes[J].Hydrobiology,1989,173:151-166.
[25]  PERRY M J,EPPLEY R W.Phosphate uptake by phytoplankton in the central North Pacific Ocean.the central North Pacific Ocean[J].Deep Sea Research I,1981,28:39-49.
[26]  宁修仁 刘子琳.渤,黄,东海初级生产力和潜在渔业生产量的评估[J].海洋学报,:.
[27]  DODDS W K,PRISCU J C.Ammonium,nitrate,phosphate,and inorganic carbon uptake in an oligotrophic lake:seasonal variations among light response variables[J].Journal of Phycology,1989,25:499-705.
[28]  CALBET A.Mesozooplankton grazing effect on primary production:A global comparative analysis in marine ecosystems[J].Limnology and Oceanography,2001,46:1 824-1 830.
[29]  BUESSELER K O,ANDREWS J A,HARTMAN M C,et al.Regional estimates of the export flux of particulate organic carbon derived from Thorium-234 during the JGOFS EQPAC program[J].Deep-Sea ResearchⅡ,1995,42:777-804.
[30]  焦念志 王荣.东海春季初级生产力与新生产力的研究[J].海洋与湖沼,:.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133