摘要
铁是植物生命活动必需的一种微量元素。铁在海洋中的分布很不均匀,在HNLC(高营养盐低叶绿素)海区,铁是影响海洋初级生产力的一个限制因子。Martin在20世纪90年代提出了“铁假说”:在HNLC海区加入铁,可以促进浮游植物生长,加速C从海洋表层向深层输出,最终降低大气中CO2含量,缓解温室效应。在赤道太平洋和南大洋进行的现场加富实验证明:加入铁以后,这些海区的浮游植物生物量增加,N和P等营养盐被消耗。
Iron is an important trace element for the growth of marine phytoplankton. Primary production, community structure, and the sinking carbon flux are quite sensitive to large variations in the atmospheric iron source, particularly in the HNLC regions, supporting the iron hypothesis of martin. Iron fertilization has a great future in decreasing the greenhouse effect. The iron enrichment experiment in the equator pacific and south Ocean proved that the biomass increased and other nutrients were depleted after enrichment.
出处
《农机化研究》
北大核心
2007年第3期18-20,共3页
Journal of Agricultural Mechanization Research
基金
胡安.德富卡洋脊Endeavour段热液生态环境变化与地球化学制约机理研究项目(40532011)
关键词
海洋基础科学
铁假说
分析
HNLC
温室效应
oceanic basic science
iron hypothesis
analysis
HNLC
greenhouse effect
