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| 长江下游无机氮和磷酸盐的分布及其在河口的转移过程 |
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沈志良, 刘兴俊, 陆家平
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中国科学院海洋研究所
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| 摘要: |
| 长江口附近海区由于受到台湾暖流、黄海冷水和浙江沿岸流等水系以及长江淡水的影响，形成十分复杂的水文、化学和地质特征，成为海洋生物生长繁殖的良好环境。探索长江及长江口海区无机氮和磷酸盐的分布和迁移规律，对于河口地球化学及初级生产力的研究有十分重要的意义，已经愈来愈受到重视。本文主要就长江下游和长江口海区无机氮和磷酸盐的分布及转移规律作一些初步探讨。 |
| 关键词: 无机氮 磷酸盐 转移过程 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第1176号 |
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| DISTRIBUTION OF INORGANIC NITROGEN AND PHOSPHATE IN THE WATER OF DOWNSTREAM OF THE CHANGJIANG RIVER AND THEIR REMOVAL PROCESSES IN THE ESTUARY |
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Shen Zhiliang, Liu Xingjun, Lu Jiaping
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Institute of Oceanology, Academia Sinica
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| Abstract: |
| This paper discusses the distributions and the removal processes of NO3-N, NO2-N，NH4-N,∑N (total inorganic nitrogen) and PO4-P in the surface water of Changjiang (Yangtze) River downstream and its estuary in October, 1983. The distributions of NO3-N, NO2-N and . ∑N show the similar trend of distribution in Changjiang River downstream water. The concentrations of them are higher in Changjiang River mouth water than in other regions of Changjiang River. The NO3-N concentration in river mouth water is close to 900 μg/L, which is 4 times higher than in 1963, and much higher than the world-wide average concentration in the river water. This increased NO3-N is mainly due to the effect of the sewages drained from the cities and countryside along the river. The distribution of PO4-P in river water is uniform except in river mouth, where higher PO4-P concentration was found. The average concentration of PO4-P in river water is 24.8 μg/L |
| Key words: INORGANIC NITROGEN AND PHOSPHATE REMOVAL PROCESSES |
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