东海黑潮区营养盐及其限制作用的月际空间分异  

Monthly Spatial Variation of Nutrients and Nutrient Limitation in Kuroshio of East China Sea

作　　者：刘超[1] 康建成[1] 王国栋[1] 朱文武[1] 孙闻政[1] 李燕[1] 

机构地区：[1]上海师范大学城市生态与环境研究中心,上海200234

出　　处：《资源科学》2012年第7期1375-1381,共7页Resources Science

基　　金：上海市教委重点学科项目:"地理学与城市环境"(编号:J50402)

摘　　要：东海黑潮区是渔业资源的潜在丰富区,对该海域营养盐的研究关系到我国海洋渔业的可持续发展。本文利用2010年NOAA发布的全球海域营养盐数据,对东海黑潮区营养盐含量、比例、营养盐限制海域的月际变化进行分析,结果表明：①营养盐浓度随深度的增加呈现增高的趋势,浓度变化以250m层为界,在上、下海域中体现出不同的特征,DIN和P的浓度变化趋势一致;②N/P、Si/N、Si/P的分布在250m以浅海域具有明显的空间差异性。N/P和Si/N的空间差异性分别以8月-9月和3月-4月最为明显,10月-12月的空间差异较小;Si/P的空间分布和N/P、Si/N不同,强烈的区域性差异出现在9月,相对均匀的空间分布则出现在5月-6月;③研究海域在300m以浅的水域受N、P的营养盐浓度限制。在4月-11月的台湾东北海域、黑潮中部海域和九州西南海域的100~200m范围内,营养盐条件适合浮游植物生长,这些区域将是潜在的渔业资源开发区。The change of nutrient level and nutrient proportion in ocean impacts the marine primary productivity and is related to sustainable development of marine ecosystem and marine fishery. The Kuroshio region in East China Sea has rich fishery resources, so the research on nutrients in this area is of great significance to the sustainable development of China’s marine fishery. This paper has analyzed the monthly change of nutrient content, nutrient proportion and nutrient limitation in Kuroshio East China Sea with the Nutrients World Ocean Atlas 2009 issued by NOAA in 2010. The results show that： 1）Nutrients concentration increases from surface to the deep, and the change of concentration has different characteristics in areas up 250m and areas below 250m. The average concentration of DIN is the same with that of P. In areas up 250m, the maximum concentration appears in May and June and the minimum concentration appears in July and August. In areas below 250m, the maximum concentration appears from October to December and the minimum concentration appears from July to October. However, the average concentration of Si is different from that of DIN and P. In areas up 250m, the maximum concentration of Si appears from May to July and the minimum concentration appears in November and December. In areas below 250m, the maximum concentration of Si appears from April to May and the minimum concentration appears in September; 2） N/P, Si/N and Si/P in shallow waters of 250m have significant spatial differences. The spatial differences of N/P and Si/N are most obvious from August to September and from March to April while the smaller differences occur from October to December. The spatial distribution of Si/P is different from that of N/P and Si/N, with strong regional differences appearing in September and the relatively uniform spatial distribution appearing from May to June; 3）The shallow waters of 300m in the studied sea area are limited by nutrient concentration of N and P. From April to November, the nutrient co

关 键 词：东海 黑潮 营养盐 海洋生态环境 渔业资源 

分 类 号：X834[环境科学与工程—环境工程]