2008年夏季西北冰洋观测区叶绿素a和初级生产力粒级结构

刘子琳; 陈建芳; 刘艳岚; 白有成; 张海生; 高生泉; 李宏亮; 卢勇

2008年夏季西北冰洋观测区叶绿素a和初级生产力粒级结构

1.
国家海洋局海洋生态系统与生物地球化学重点实验室,浙江杭州 310012;国家海洋局第二海洋研究所,浙江杭州 310012
2.
杭州科技职业技术学院,浙江杭州 310012

基金项目: 国家自然科学基金(40876103;41003036;41076135;40476004);中国第三次北极科学考察资助项目。

计量
- 文章访问数: 1413
- HTML全文浏览量: 10
- PDF下载量: 1308
- 被引次数: 0
出版历程
- 收稿日期: 2010-08-06

The size-fractionated chlorophyll a and primary productivity in the sur- veyed area of the western Arctic Ocean during the summer of 2008

1.
Key Lab oratory of State Oceanic Administration for Marine Ecosystem and Biogeochemistry, State Oceanic Administration; Hangzhou 310012,China;Second Institute of Oceanography,State Oceanic Administration Hangzhou 310012, China
2.
Hangzhou Academy of Scientific Professional Technology, Hangzhou 310012, China

摘要

摘要: 对2008年夏季在西北冰洋172° 143.6°W的楚科奇海及其北部海区对粒度分级叶绿素a和初级生产力现场观测资料,对观测区的空间分布特征进行了研究。结果表明,观测海区表层叶绿素a浓度为0.013 19.367 μg/dm³,平均值为0.677±2.2661 μg/dm³,次表层水叶绿素a浓度高于其它水层。水柱叶绿素a浓度从高到低的分布为陆架区、波弗特海、海台区、海脊区、海盆区。R断面叶绿素a浓度8月高于9月。观测站初级生产力(C)为0.050 2.453 mg/(m³·h),陆架区平均生产力高于海台区、海盆区、波弗特海以及海嵴区。浮游植物粒级结构表明,楚科奇海和波弗特海区以大于20 μm的微小型浮游生物占优势,对总叶绿素a浓度和初级生产力的贡献率分别为51.75%和50.89%,北部深海区以小于2.0 μm的微微型浮游生物的贡献占优势,其对总叶绿素a浓度和初级生产力的贡献率分别为68.25%和56.13%。
- 叶绿素a /
- 初级生产力 /
- 粒级结构 /
- 北冰洋
Abstract: Investigations of the size-fractionated chlorophyll a and primary productivity were carried out in the western Arctic Ocean during the 3nd national arctic research expedition of China during the summer of 2008. The results show that the surface chlorophyll a concentrations are 0.013 19.367 μg/dm³ and the average value is (0.677±2.2661)μg/dm³ in the surveyed area. Chlorophyll a concentrations in the subsurface water are higher than these at the surface layer and in the deep depth water. The distribution of chlorophyll a is obviously areal characteristics, the areal arrange order of the water-column chlorophyll a is the Chukchi shelf, the Beaufout Sea, the Chukchi Plateau, the Mendeleev Ride and the Canada Basin. The chlorophyll a concentrations decrease in two sequential samplings on Section R, with water-column average values of (3.083±3.009) and (0.797±0.774)g/dm³, respectively. The primary productivity at the surveyed stations is 0.050 2.453 mg/(μm³·h). The primary productivity of the Chukchi shelf is higher than that of the Chukchi Plateau,the Canada Basin,the Beaufout Sea and the Mendeleev Ride.The results of the size-fractionated chlorophyll a and primary productivity show that microplankton accounts for the majority of the total chlorophyll a (51.75%) and primary productivity(50.89%) on the Chukchi shelf and the Beaufout sea Shelf. The contributions of the picoplankton account for the majority of the total chlorophyll a (68.25%) and primary productivity (56.13%) in the Beaufout Sea,on the Chukchi Plateau, the Mendeleev Ride and in the Canada Basin.
- chlorophyll a /
- primary productivity /
- size-fractionated /
- Arctic Ocean

HTML全文

参考文献(30)

COOPER L W,WHITLEDGE T E,GREBREBMEIER J M, et al.The nutrient, salinity and stable oxygen isotope composition of Bering and Chukchi Sea waters in and near the Bering Strait[J]. J Geophys Res:C, 1997, 102: 12563—12573.

COTA G,POMEROY L R,HARRISON W G,et al. Nutrients, primary production and microbial heterotrophy in the south-eastern Chukchi Sea: arctic summer nutrient depletion and heterotrophy[J]. Mar Ecol Prog Ser,1996, 135:247—258.

HILL V, COTA G. Spatial patterns of primary production on the shelf, slope and basin of the western arctic in 2002[J]. Deep-sea Research:II, 2005, 52:3344—3354.

WALSH J J, DIETERLE D A, MASLOWSKI W, et al. A numerical model of seasonal primary production within the Chukchi/Beaufort Seas[J]. Deep-sea Research:II, 2005, 52:3541—3576.

ROACH A T, AAGARD K, PEASE C H, et al. Direct measurements of transport and water properties through the Bering Strait[J]. J Geophys Res, 1993, 100(C9):18443—18457.

STEIN R, MACDONALD R W.The Organic Carbon Cycle in the Arctic Ocean[M]. Heidelberg:Springer Verlag Berlin,2004.

WALSH J J,MCROV C P,COACHMAN L K,et al. Carbon and nitrogen cycling within the Bering/Chukchi Sea:source regions for organic matter effecting AOU demands of the Arctic Ocean[J]. Prog Oceanog, 1989, 22:277—359.

GOSSELIN M, LEVASSEUR M, WHEELER P A, et al. New measurements of phytoplankton and ice algal production in the Arctic Ocean. Deep-Sea Research:Part II,1997,44(8):1623—1644.

CHEN M,HUANG Y P,GUO L D, et al. Biological productivity and carbon cycling in the Arctic Ocean [J]. Chinese Science Bulletin, 2002,47(12):1037—1040.

陈志华,石学法,蔡德陵,等.北冰洋西部沉积物有机碳、氮同位素特征及其环境指示意义[J]. 海洋学报,2006,28(6):61—71.

高爱国,刘焱光,张道建,等. 楚科奇海与白令海沉积物中碘的纬向分布[J]. 中国科学:D辑, 2003,33(2):139—147.

高郭平,董兆乾,侍茂崇. 1999年夏季中国首次北极考察区水团特征[J].极地研究,2003,15(1):11—20.

金明明, WU Jing-feng,陈建芳,等. 加拿大海盆的营养盐极大[J].极地研究,2004,16(3):240—252.

李宏亮,陈建芳,刘子琳,等. 北极楚科奇海和加拿大海盆南部颗粒生物硅的粒级结构[J].自然科学进展, 2007, 1:72—78.

薛斌,潘建明,张海生,等. 北极楚科奇海地区沉积物生源物质的来源与分布[J]. 极地研究,2006,18(4):265—272.

赵进平,史久新,矫玉田. 夏季北冰洋海冰边缘区海水温盐结构及其形成机理[J].海洋与湖沼, 2003, 34(4):375—388.

刘子琳,陈建芳,张涛,等. 楚科奇海及其海台区粒度分级叶绿素a和初级生产力[J]. 生态学报,2007,27(12):4953—4962.

刘子琳,陈建芳,刘艳岚,等. 北冰洋沉积物和海水叶绿素a浓度分布的区域性特征[J].沉积学报,2008,26(6):1036—1042.

国家技术监督局. GB-12763.6 海洋调查规范——海洋生物调查[S].北京:中国标准出版社,1991: 1—21.

PARSONS T R, MAITS Y, LALLI C M. A Manual of Chemical and Biological Methods for Seawater Analysis [M]. Pergamon Press, 1984:101—173.

COACHMANN L K,AAGAARD K. Transport through Bering Strait: annual and inter-annual variability [J]. J Geophys Res, 1988, 93:15535—15539.

HANSELL D A, WHITLEDGE T E,GOERING J J. Patterns of nitrate utilization and new production over the Bering-Chukchi shelf [J]. Cont. Shelf Res. 1993, 13(5/6):601—627.

史久新,赵进平,矫玉田,等. 太平洋入流及其与北冰洋异常变化的联系[J]. 极地研究, 2004, 16(3):253—260.

FALKNER K K . Barium as a tracer of arctic halocline and river water [J]. Deep-Sea Res:Part II, 1997,44:1543—1569.

SPRINGER A M, McROY C P, FLINT M V. The paradox of pelagic food webs in the northern Bering Sea-III. Patterns of primary production [J]. Cont Shelf Res, 1993, 13(5/6):575—599.

杨清良, 林更铭, 林茂,等. 楚科奇海和白令海浮游植物的种类组成与分布[J]. 极地研究, 2002,14(2):113—125.

EL-SAYED S Z,TAGUCHI S. Primary production and standing crop of phytoplankton along the ice-edge in the Weddell Sea[J]. Deep-Sea Res,1981,28:1017—1032.

LI W K, SUBBA Rao D V, HARRISON W G, et al.Autotrophic picoplankton in the tropical ocean [J]. Science, 1983, 219:292—295.

PLATT T, SUBBA Rao D V,IRWIN B. Photosynthesis of picoplankton in the oligotrophic ocean [J]. Nature, 1983,301(5902):702—704.

PARSONS T R TAKAHASHI M. Environmental control of phytoplankton cell size[J]. Limnol Oceanogr, 1973,18(4):511—515.

施引文献

资源附件(0)

访问统计

点击查看大图

计量

文章访问数: 1413
HTML全文浏览量: 10
PDF下载量: 1308
被引次数: 0

姓名
邮箱
手机号码
标题
留言内容
验证码

留言板