| 摘要: |
| 利用2010年NOAA发布的全球海域营养盐数据, 对东海黑潮区硝酸盐含量及其高值区的季节分布进行分析。结果表明: (1) 东海黑潮区NO3?-N平均浓度夏季最高、冬季最低, 陆架高、外海低, 硝酸盐浓度随深度而增高, 增高趋势秋季最强, 春季最弱。(2) 在东海黑潮区100—300m水层之间存在着硝酸盐跃层和深层水的涌升; 深层水涌升强度越大, 跃层位置深度越浅。(3) 在东海黑潮区, 从表层至深层的NO3?-N高值区主要分布在台湾东北海域、黑潮中段海域和九州西南海域, NO3?-N高值区和高值中心呈明显的季节性变化; 上述区域是今后东海黑潮区需要密切关注的海洋渔业资源丰富的海域。 |
| 关键词: 东海 黑潮 硝酸盐 海洋生态环境 |
| DOI：10.11693/hyhz201305013013 |
| 分类号: |
| 基金项目:上海市教委重点学科“地理学与城市环境”, J50402。 |
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| SEASONAL DISTRIBUTION OF NITRATE CONCENTRATION AND HIGH-VALUE AREAS IN KUROSHIO OF EAST CHINA SEA |
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LIU Chao, KANG Jian-Cheng, WANG Guo-Dong, ZHU Wen-Wu, SUN Wen-Zheng, LI Yan
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Urban Ecology and Environment Research Center, Shanghai Normal University
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| Abstract: |
| Abstract We studied the seasonal distribution of nitrate concentration especially the concentration areas in the Kuroshio in the East China Sea, using the World Ocean Atlas 2009 issued by NOAA in 2010. The results show that: (1) the average nitrate concentration in the study region was high in summer and the low in winter in season, and high in the continental shelf area and low in the off coast area in space. The nitrate concentration increased with depth in the highest increasing tendency in autumn and the lowest in spring; (2) nitrate-cline and of deep water upwelling existed in 100-300m water layer. The position of nitrate-cline was shoaled with the strength of upwelling; (3) the high-concentration areas appeared in the northeast of Taiwan, the middle area of the Kuroshio, and the southwest of Kyushu. The high-concentration area and center moved in season, which is potentially high production areas, and are rich in fish resource, deserving of more attention on exploration in the future. |
| Key words: East China Sea Kuroshio nitrate Marine Ecological Environment |
