摘要
微量元素作为藻类营养因子的一部分,对藻类生长具有重要作用,而藻类(特别是微囊藻)的大量增长则会造成"水华"现象。本文综述了各种微量元素对水华藻类生长的影响及其影响机理,进而得出结论:微量元素对水华藻类的生长影响趋势为低浓度促进生长,高浓度抑制生长,而藻类对微量元素有一定的富集作用;在微量元素中,铁元素对水华的发生、发展至为重要,在某种情况下有可能成为水华发生、发展的限制因子;其他元素(如稀土元素和重金属元素等)在水华发生、发展中则起辅助作用。
As a part of the most important nutritional factors, trace elements are essential for the growth of algae（ especially Microcystis） , whose explosive growth causes a＂ water-bloom＂ phenomenon. The present article summarizes the effects of various trace elements（ e. g. , iron, zinc, copper） on the growth of algal bloom species and their possible mechanisms. It has been concluded a general tendency toward the above effects, i.e. , the growth of algal bloom species will be promoted by a low or be inhibited by a high concentration of trace elements. The algae can bioaccumulate certain trace elements in the bodies. Furthermore, iron plays a critical role in the occurrence and development of water-blooms, and could even be a restriction factor. Other elements （ e. g. , rare earth elements and heavy metals ） seem to play assistant roles for the waterbloom occurrence and development.
出处
《淡水渔业》
CSCD
北大核心
2008年第5期74-79,共6页
Freshwater Fisheries
基金
江苏省科技项目(自然科学基金BK2006030)
中央级公益性科研院所基本科研业务费专项资金项目(6-115043)
关键词
微量元素
水华
发生
发展
影响
trace element
water bloom
occurrence
development
effect
