The main phosphorous sources in the Changjiang estuary

doi:10.1007/s00343-008-0486-5

IOCAS-IR > 海洋环流与波动重点实验室

	The main phosphorous sources in the Changjiang estuary
	Yang Dongfang 1,2,3; Wang Fan2 ; Miao Zhenqing 1; Chen Yongli 2; Tong Yuanzheng 1
	2008-11-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	26 期号:4 页码:486-497
文章类型	Article
摘要	Analysis using historical data on the phosphate sources in Changjiang (Yangtze River) estuary show that phosphate was supplied equally from the east, south, west and north of the estuary. These sources include the Changjiang River, the Taiwan Warm Current (TWC), a cyclone-type eddy, and the 32A degrees N Upwelling, supplying different phosphates in different times, ways and intensities. The magnitude of their supplying phosphate concentration was related with the size in the order of the Changjiang River < the TWC < the 32A degrees N Upwelling < the cyclone-type eddy, and the duration of the supplying was: the Changjiang River > the TWC > the cyclone-type eddy > the 32A degrees N Upwelling. The four sources supplied a great deal of phosphate so that the phosphate concentration in the estuary was kept above 0.2 mu mol/L in previous years, satisfying the phytoplankton growth. The horizontal and vertical distribution of the phosphate concentration showed that near shallow marine areas at 122A degrees E/31A degrees N, the TWC in low nutrient concentration became an upwelling through sea bottom and brought up nutrients from sea bottom to marine surface. In addition, horizontal distribution of phosphate concentration was consistent with that of algae: Rhizosolenia robusta, Rhizosolenia calcaravis and Skeletonema, which showed that no matter during high water or low water of Changjiang River, these species brought by the TWC became predominant species. Therefore, the authors believe that the TWC flowed from south to north along the coast and played a role in deflecting the Changjiang River flow from the southern side.; Analysis using historical data on the phosphate sources in Changjiang (Yangtze River) estuary show that phosphate was supplied equally from the east, south, west and north of the estuary. These sources include the Changjiang River, the Taiwan Warm Current (TWC), a cyclone-type eddy, and the 32A degrees N Upwelling, supplying different phosphates in different times, ways and intensities. The magnitude of their supplying phosphate concentration was related with the size in the order of the Changjiang River < the TWC < the 32A degrees N Upwelling < the cyclone-type eddy, and the duration of the supplying was: the Changjiang River > the TWC > the cyclone-type eddy > the 32A degrees N Upwelling. The four sources supplied a great deal of phosphate so that the phosphate concentration in the estuary was kept above 0.2 mu mol/L in previous years, satisfying the phytoplankton growth. The horizontal and vertical distribution of the phosphate concentration showed that near shallow marine areas at 122A degrees E/31A degrees N, the TWC in low nutrient concentration became an upwelling through sea bottom and brought up nutrients from sea bottom to marine surface. In addition, horizontal distribution of phosphate concentration was consistent with that of algae: Rhizosolenia robusta, Rhizosolenia calcaravis and Skeletonema, which showed that no matter during high water or low water of Changjiang River, these species brought by the TWC became predominant species. Therefore, the authors believe that the TWC flowed from south to north along the coast and played a role in deflecting the Changjiang River flow from the southern side.
关键词	Changjiang Estuary Phosphate Sources Taiwan Warm Current The 32 Degrees n Upwelling Cyclone-type Eddy
学科领域	Limnology ; Oceanography
DOI	10.1007/s00343-008-0486-5
URL	查看原文
收录类别	SCI
语种	英语
WOS记录号	WOS:000262669100024
引用统计	被引频次：1[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/6346
专题	海洋环流与波动重点实验室
作者单位	1.Zhejiang Ocean Univ, Marine Sci Coll, Zhoushan 316000, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Ecoenvironm Sci Res Ctr, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Yang Dongfang,Wang Fan,Miao Zhenqing,et al. The main phosphorous sources in the Changjiang estuary[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2008,26(4):486-497.
APA	Yang Dongfang,Wang Fan,Miao Zhenqing,Chen Yongli,&Tong Yuanzheng.(2008).The main phosphorous sources in the Changjiang estuary.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,26(4),486-497.
MLA	Yang Dongfang,et al."The main phosphorous sources in the Changjiang estuary".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 26.4(2008):486-497.

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