节点文献
黄海西部大气湿沉降(降水)中各元素沉降通量的初步研究
WET DEPOSITION (PRECIPITATION) OF MAJOR ELEMENTS AT TWO SITES OF NORTHWESTERN YELLOW SEA
【摘要】 本文对黄海西部的千里岩、青岛的麦岛降水(雨+雪)中的H+,NH4+,K+,Na+,Ca2+,Mg2+,F-,Cl-,NO3-,SO42-,SiO32-,PO43-进行了测定.计算了除H+以外其他离子的湿沉降通量.1998年千里岩N,P,Si的湿沉降通量分别为:DIN([NH4-]十[NO3-])0.611g.m-2·a-1,P0.002g·m-2·a-1,Si0.078g·m-2,a-1,麦岛N,P,Si的湿沉降通量分别为:DIN 0.776g·m-2.a-1,P0.008g·m-2·a-1,Si0.060g·m-2·a-1千里岩降水的N/P比(摩尔比)为727,远高于海水中的Redfield比值(16),将对该海域的营养盐结构产生一定的影响.对于忽略小于0.7mm的降水对湿沉降通量所可能产生的误差进行了估算,发现几种主要离子均小于9%.
【Abstract】 Totally, 79 precipitation samples were collected at Qianliyan island and Maidao in 1998, and analyzed to determine the concentration for 12 major ions (H+ , NH+4 , K+ , Na+ , Ca2+ , Mg2+ , F- , Cl- , NO-3 , SO2-4, SiO2-3 , PO3-4), and the wet deposition of 11 major ions except H+ was calculated. Theobservation is that the wet deposition was 0.611g·m-2·a-1 for N, 0.002g·m-2·a-1 for P, 0.078g·m-2·a-1 for Si at Qianliyan in 1998 and for N, P, Si is 0.776, 0.008, 0.060g· m-2· a-1 at Maidao, respectively.The ratio of N/P in mole in precipitation of Qianliyan was 727, mucn higher than the ratio of Redfield (16) in seawater, this will effect the nutrient structure in this area of Yellow sea. The estimated errors of some importantions in precipitation of less than 0.7mm were less than 9% .
【Key words】 Yellow sea; nutrient element; wet deposition; the ratio of N/P.;
- 【文献出处】 环境化学 ,Environmental Chemistry , 编辑部邮箱 ,2000年04期
- 【分类号】X51
- 【被引频次】48
- 【下载频次】442