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| 杭州湾北岸近岸海域N、P 降解系数的围隔实验研究 |
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席 磊1, 程金平1, 程 芳1,2, 朱惠琴1,3, 邵 悦1,2, 王 茜1, 赵文昌1
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1.上海交通大学 环境科学与工程学院;2.上海师范大学 生命与环境科学学院;3.国家海洋局 东海分局
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| 摘要: |
| 通过制作生态系围隔实验装置, 采用模拟围隔实验的方法, 测定N、P 营养盐的降解系数。基于夏秋两季杭州湾北岸近岸海域的现场水样采集, 测出杭州湾北岸近岸海域无机氮的生物降解系数在0.121～0.269 d-1 范围内, 均值为0.225 d-1, 测得活性磷酸盐的降解系数在0.031～0.179 d-1, 均值为0.08d-1。考虑到实验室静态模拟环境与真实海区状况的差异, 采用保守估计法和Bosko 公式进行处理, 最终计算得出的0.21 d-1 和0.05 d-1 可分别作为杭州湾北岸海域无机氮和活性磷酸盐的实际降解系数。 |
| 关键词: 杭州湾 降解系数 围隔生态系实验 模拟 |
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| 基金项目:海洋公益性行业科研专项经费项目(200805065) |
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| Ecosystem enclosure experiments on degradation coefficient of N and P in the North Off-shore of Hangzhou Bay |
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| Abstract: |
| In this paper, the degradation coefficient of N and P was determined using simulation experiment method through setting up a ecosystem enclosure experiment device. Based on the field water samples obtained from the north Hangzhou bay in summer and autumn, the range of biodegradation coefficient of inorganic nitrogen was confirmed from 0.121 d-1 to 0.269 d-1, mean 0.225 d-1, and for the activated phosphate, it was from 0.031 d-1 to 0.179 d-1, mean 0.08 d-1. Considering the differences between laboratory simulation environment and real marine situation, the final actual degradation coefficient of inorganic nitrogen and activated phosphate, was calculated to be 0.21 d-1 and 0.05 d-1 respectively using conservative estimate method and Bosko formula. |
| Key words: Hangzhou Bay degradation coefficient ecosystem enclosure experiment simulation |