摘要
研究了光照、温度、营养 (N,P)对平原水网水体藻类生长的影响 .结果表明 :在 10 0 0~ 5 0 0 0 lx光强范围内 ,藻类的生长数量随光强的增加而呈对数关系增加 ,4 0 0 0 lx是最适宜的培养光照 .在 15~30℃区间内 ,藻类的生长数量也随着温度升高而增加 ,30℃是较适宜的温度 .且温度的影响大于光照 .水中 T- P在 0 .1~ 0 .75 mg/ L范围内 ,随 T- P浓度的提高 ,藻类数量呈对数关系增加 ,而水中 T- N浓度的变化对藻类生长的影响不是很明显 .当水中 T- P>0 .5 mg/ L、T- N>1.0 mg/ L时 ,就能满足藻类大量增殖的需要 。
Influences of light intensity, temperature and nutrients (N, P) on algal growth in the water of network of rivers in plain were studied in this test. It is shown that amount of algae increased logarithmically with increase in light intensity in the range of 1 000 5 000 luxes and with rise in temperature from 15 ℃ to 30 ℃, and 4 000 luxes and 30 ℃ is most favorable. But the influence of temperature was more obvious than that of light intensity. When consistency of T P was 0.1 0.75 mg/L in water, the algal increases logarithmically with the consistency growing up, but it didn't happen with the T N. The specific growth is the highest when the consistency of T P>0.5 mg/L, T N>1.0 mg/L, and the influence of P is greater than N.
出处
《浙江大学学报(农业与生命科学版)》
CAS
CSCD
北大核心
2002年第1期94-97,共4页
Journal of Zhejiang University:Agriculture and Life Sciences
基金
浙江省环境保护局计划项目 ( 9617)
关键词
富营养化
限制因子
藻类
光照
温度
氮
磷
平原
水网水体
eutrophication
limiting factors
algal
light intensity
temperature
nitrogen
phosphorus