现代地质2011，Vol.25Issue(2)：322-331,10.
南印度洋海区营养盐的分布特征
Nutrients Distribution in the South Indian Ocean
摘要
Abstract
The distributions of total organic phosphorus( TOP), total organic nitrogen( TON), and dissolved inorganic nutrients in the south Indian Ocean were studied. The results suggest that the dissolved inorganic nutrients concentrations in the surface water are the minimum values in the sampled water depth because of the influences of physical and biological processes. Their concentrations in the deep water show little variations because of organic material remineralization and the decrease of phytoplankton consumption. In the surface water, TON and TOP are the major components of TN and TP, which suggests that the organic forms are the main forms for nitrogen and phosphorus. In the surface water, there is a distinctive eastern gradient of TON and TOP concentrations, TOP/TP and TON/TN ratios along 37.8° S. The simultaneous measurements of chlorophyll a in photic zone reveal that the primary production variation may be the major controlling factor for spatial distributions of TON and TOP. The correlation between various forms of nitrogen and phosphorus shows that organic and inorganic nutrients are inter-complementary, and TON and TOP are the important sour ces for phytoplankton produc tion in the surface water. The TN/TP ratios indicate that the nitrogen and phosphorus are not the limiting factors for the primary production in the research region.关键词
总有机磷/总有机氮/营养盐/南印度洋Key words
TOP/ TON/ nutrients/ south Indian Ocean分类
海洋科学引用本文复制引用
倪建宇,王方国,姚旭莹,郑旻辉,赵宏樵..南印度洋海区营养盐的分布特征[J].现代地质,2011,25(2):322-331,10.基金项目
大洋矿产资源勘探开发专项基金项目(DYXM-115-02-4-07) （DYXM-115-02-4-07）
科技部公益项目(2006FY220400) （2006FY220400）
国家海洋局第二海洋研究所基本科研业务费专项(JG0702). （JG0702）
