环境因子对细基江蓠繁枝变种氮、磷吸收速率的影响

应用生态学报 ›› 2001, Vol. ›› Issue (3): 417-421.

环境因子对细基江蓠繁枝变种氮、磷吸收速率的影响

许忠能, 林小涛, 计新丽, 王朝晖, 黄长江

1. 暨南大学水生态科学研究所, 广州 510632;
2. 汕头大学海洋生物室, 汕头 515063

收稿日期:1999-11-01 修回日期:2000-01-03
通讯作者: 许忠能,男,1973年生,硕士,助教,主要从事水生生物学、生态学研究,发表论文若干篇
基金资助:
国家自然科学基金重大资助项目(39790110)

Effect of environmental factors on N and P uptake by Gracilaria tenuistipitata varliui Zhang et Xia

XU Zhongneng, LIN Xiaotao, JI Xinli, WANG Zhaohui, HUANG Changjiang

1. Institute of Aquatic Ecoscience, Jinan University, Guangzhou 510632;
2. Marine Biological Laboratory, Shantou University, Shantou 515063

Received:1999-11-01 Revised:2000-01-03

摘要/Abstract

摘要： 实验室条件下,研究了光强、酸碱度、温度、盐度对细基江蓠繁枝变种N、P吸收速率的影响.细基江蓠繁枝变种对N的吸收速率在光强为800～2400μmolphoton·m^-2·s^-1时最高,达0.32～0.36μmol·g^-1·h^-1,而对P的吸收速率在320～1600μmolphoton·m^-2·s^-1时最高,达0.017～0.018μmol·g^-1·h^-1.当pH为8.0时,细基江蓠繁枝变种对N、P都有较大的吸收速率.在温度-盐度双因子试验中,温度、盐度对N的吸收速率有显著影响,在21～26℃与20%～28%条件下对N的吸收速率较高,但温度与盐度无显著交互作用;温度对P的吸收速率有极显著影响,在21～26℃时对P的吸收速率最高,而盐度对P的吸收速率无显著影响,且温度与盐度的交互作用不显著.

关键词: 细基江蓠繁枝变种, N, P, 吸收速率

Abstract: The effect of light intensity, pH, temperature, salinity on the uptake of nitrogen and phosphorus by Gracilaria tenuistipitata var.liui Zhang et Xia was were studied under laboratory conditions. The uptake rate of nitrogen reached as high as 0.32～0.36μmol·g^-1 ·h^-1 at favorable light intensity of 800～2400μmol photon·m^-2 ·s^-1, while that of phosphorus reached 0.017～0.018μmol·g^-1 ·h^-1 at 320～1600μmol photon·m^-2 ·s^-1. The nutrient uptake rate reached the maximum at pH 8.0. A significant difference of N uptake rate at different temperatures or salinities and that of P uptake rate at different temperatures were found.The N uptake rate was higher at 21～26℃ and 20%～28%, but P uptake was higher at 21～26℃. There was no interaction between temperature and salinity.

Key words: Gracilaria tenuistipitata var.liui Zhang et Xia, Nitrogen, Phosphorus, Uptake rate

中图分类号:

Q958.8

许忠能, 林小涛, 计新丽, 王朝晖, 黄长江. 环境因子对细基江蓠繁枝变种氮、磷吸收速率的影响[J]. 应用生态学报, 2001, (3): 417-421.

XU Zhongneng, LIN Xiaotao, JI Xinli, WANG Zhaohui, HUANG Changjiang . Effect of environmental factors on N and P uptake by Gracilaria tenuistipitata varliui Zhang et Xia[J]. Chinese Journal of Applied Ecology, 2001, (3): 417-421.

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