Qi Xiao-hong, Liu Sumei, Zhang Jing, Chen Hongtao
College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266003, China.
Ying Yong Sheng Tai Xue Bao. 2003 Jul;14(7):1112-6.
The fluxes of dissolved nutrients at sediment-water interface were investigated at 4 stations in the HAB area of East China Sea in May 2001 and May 2002. The benthic fluxes of nutrients were determined by incubating the sediment core samples with bottom seawater bubbled with air or nitrogen. The transfer of nutrients was more active under anoxic condition. The fluxes of dissolved nutrients were generally high at the stations close to the coast. The sediment was the source of SiO3(2-), which accounted for 6% of primary production. For DIN and PO4(3-), the sediment was the sink. DIN and PO4(3-) adsorbed by sediment accounted for 5.9% and 67% of the riverine DIN and PO4(3-) inputs, respectively, and the inputs of SiO3(2-) accounted for 7.8%.
2001年5月和2002年5月，在东海赤潮区域的4个站点对沉积物 - 水界面溶解营养盐通量进行了调查。通过将沉积物柱状样与经空气或氮气鼓泡的底层海水进行培养来测定营养盐的底栖通量。在缺氧条件下营养盐的转移更为活跃。靠近海岸的站点溶解营养盐通量通常较高。沉积物是SiO₃²⁻的源，其占初级生产力的6%。对于DIN和PO₄³⁻，沉积物是汇。沉积物吸附的DIN和PO₄³⁻分别占河流DIN和PO₄³⁻输入量的5.9%和67%，而SiO₃²⁻的输入量占7.8%。
