摘要
在实验室条件下，研究光照、温度、盐度及pH对龙须菜（Gracilaria lemaneiformis）和菊花心江蓠（G．lichevoides）N、P吸收速率的影响。结果表明，上述4个环境因子对这两种藻类的N、P吸收速率均有显著影响。其中，对龙须菜N吸收速率影响的适宜范围分别为：光照强度100-240μE·m^-2·s^-1温度16～23℃，盐度25～35，pH8．0～9．0；对P吸收速率影响的适宜范围分别为：光照强度80-200μE·m^-2·s^-1，温度16-23℃，盐度15～35，pH8．0～9．0。而对于菊花心江蓠，N吸收速率影响的适宜范围分别为：光照强度120-300μE·m^-2·s^-1，温度23～33℃，盐度25-40，pH7．5～9．0；P吸收速率影响的适宜范围分别为：光照强度100-240μE·m^-2·s^-1，温度26～33℃。盐度15-35，pH7．5～9．0。
Red macroalgae Gracilaria lichenoides and G. lemaneiformis were selected as experimental objects, which have been cultured in a large scale in Fujian Province. The effects of four environmental factors-light intensity, temperature, salinity and pH-on uptake of nitrogen and phosphorus by the two macroalgae were studied under laboratory conditions. Ten light intensity grades （20μE·m^-2·s^-1 40μE·m^-2·s^-1, 60μE·m^-2·s^-1, 80μE·m^-2·s^-1 100μE·m^-2·s^-1, 120μE·m^-2·s^-1, 160μE·m^-2·s^-1,200μE·m^-2·s^-1, 240μE·m^-2·s^-1, 300μE·m^-2·s^-1）, 8 salinity grades （5,10,15,20,25,30,35,40）, 5 pH grades （7.5,8.0, 8.5,9.0,9.5） and 6 temperature grades （8℃,12℃, 16 ℃,20℃,23℃,26℃） were set up for G. lemaneiformis or 8 temperature grades （ 12℃,16℃, 20℃, 23℃,26℃, 30℃, 33 ℃, 36℃ ） for G. lichenoides. The results show that all of the four environmental factors have significant effects on the uptake rates of N and P by the two algae. The most suitable ranges of the four environmental factors for the uptake rate of N by G. lemaneiformis are at light intensity 100-240μE·m^-2·s^-1, temperature 16-23 ℃, salinity 25 - 35 and pH 8.0 - 9.0 respectively, and for the uptake rate of P by G. lemaneiformis, the most suitable ranges are at light intensity 80- 200 μE·m^-2·s^-1, temperature 16- 23℃, salinity 15 - 35, and pH 8.0 - 9.0 respectively. The most suitable ranges of the four environmental factors for the uptake rate of N by G. lichevoides are at light intensity 100 - 240μE·m^-2·s^-1, temperature 16-23℃, salinity 25-35 and pH 8.0-9.0, respectively, and for the uptake rate of P by G. lichevoides, at light intensity 80 200μE·m^-2·s^-1, temperature 16 23 ℃, salinity 15-35, and pH 8.0-9.0 respectively.
出处
《中国水产科学》
CAS
CSCD
北大核心
2006年第2期257-262,共6页
Journal of Fishery Sciences of China
基金
福建省重大科技项目(20021003)
宁波市博士基金(2005A610025)
关键词
环境因子
龙须菜
菊花心江蓠
氮
磷
吸收速率
environmental factors
G. lemaneiformis
G. lichevoides
N
P
uptake rate
