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中文摘要：
分析了1997—2007年由SeaWiFS卫星获得的我国东海ρ（叶绿素a）的时空变化特点.结果表明,ρ（叶绿素a）多年平均值在近海明显高于外海,近海往外快速递减,最高值位于长江口大沙滩.东海ρ（叶绿素a）呈明显的年周期性变化,波峰基本出现在3—4月,波谷在7—8月.在近11年间,ρ（叶绿素a）及距平呈下降趋势,最显著的是在东海近海海区.ρ（叶绿素a）及距平的变化具有明显的区域性,东海北部近海多年的月均值最高〔ρ（叶绿素a）〉2.0mg/m^3〕,南部近海和台湾海峡次之（0.8～2.0mg/m^3）,东海北部和南部外海最小〔ρ（叶绿素a）〈1.0mg/m^3〕.近海主要受到陆地径流带来富营养盐的影响,ρ（叶绿素a）高、变化幅度大、周期短,东海外海及台湾海峡主要受到高温寡营养盐的黑潮及其分支影响,ρ（叶绿素a）低、变化幅度小、周期长.
英文摘要：
The temporal-spatial changes of chlorophyll-α concentration [ ρ （chl-a）] obtained by SeaWiFS in the East China Sea （ECS） during 1997-2007 were analyzed. The results showed that the annual average ρ（chl-a） in the inshore area was much higher than that in the offshore; the average sharply decreased from inshore to offshore; and the highest ρ（chl-a） was located in the estuary of the Yangtze River. In the ECS, ρ （chl-a） showed a significant annual cycle, reaching the highest in March and April and the lowest in July and August every year. In the recent 11 years, ρ（chl-a） and annual anomalies decreased in the ECS, especially in the inshore, ρ（chl-a） was the highest （ 〉 2.0 mg/m^3 ） in the north inshore, and was higher （0.8-2.0 mg/m^3 ） in the south inshore and the Taiwan Strait, and was the lowest （ 〈 1.0 mg/m^3 ） in the north and south offshores. The ρ（chl-a） in the inshore of the ECS was mainly affected by the rich nourishment brought by the land flows, which resulted in high ρ（chl-a）, great change and short period,ρ（chl-a） in the offshore and Taiwan Strait was largely impacted by the Kuroshio and its offset, which resulted in low ρ（chl-a）, little change and long period.
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