Seasonal variations of eutrophication and the relationship with environmental factors in the Zhujiang Estuary in 2006—2007

ZHANG Jing-ping; HUANG Xiao-ping; JIANG Zhi-jian; HUANG Dao-jian

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ZHANG Jing-ping, HUANG Xiao-ping, JIANG Zhi-jian, HUANG Dao-jian. Seasonal variations of eutrophication and the relationship with environmental factors in the Zhujiang Estuary in 2006—2007[J]. Haiyang Xuebao, 2009, 31(3): 113-120.

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Seasonal variations of eutrophication and the relationship with environmental factors in the Zhujiang Estuary in 2006—2007

1.
Key Laboratory of Tropical Marine Envirinmntal Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China;Graduate School, Chinese Academy of Sciences, Beijing 100049, China
2.
Key Laboratory of Tropical Marine Envirinmntal Dynamics, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China

Received Date: 2008-10-18
Rev Recd Date: 2009-01-18

Abstract

Abstract

Seasonal variations of eutrophication in the Zhujiang Estuary were examined based on data from three surveys during the wet,temperate and dry seasons from 2006 to 2007. A modified method of nutrient status index and C_N/C_P value were used in analysis,and the relation ship bet ween eutrophication index and environmental factors was discussed. It concluded that the eutrophication in the Zhujiang Estuary was high,and this area could be classified as a phosphorus-limited potential eutrophication area. The eutrophication index decreased along the estuary from north to south in spatial distribution,and eutrophication index showed a sequence of dryseasong reater than wet seasong reater than temperate season in the seasonal variation. The temporal and spatial distributions of eutrophication index were mostly regulated by runoff.
- eutro phication,
- nutrients,
- environmental factors,
- Zhujiang Estuary

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References(26)

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