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首页> 外文期刊>Marine Chemistry >Distributions of particulate and dissolved organic and inorganic phosphorus in North Pacific surface waters
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Distributions of particulate and dissolved organic and inorganic phosphorus in North Pacific surface waters

机译：北太平洋地表水中颗粒和溶解性有机磷和无机磷的分布

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Several operationally defined fractions of phosphorus (P) were measured along a surface water transect in the North Pacific. The P content in all fractions was found to increase northward from the edge of the subtropical to the subarctic region. Particulate organic P (POP) concentrations increased from 9 to 110 nmol L~(-1), whereas the particulate inorganic P (PIP) concentrations increased from 1 to 13 nmol L~(-1). A significant correlation between POP, PIP and chlorophyll a suggested that these P pools are associated directly or indirectly with phytoplankton cells. PIP comprised 10-20% of the total particulate P pool across the transect, indicating it is an important component of the marine P cycle in this region. Dissolved non-reactive P (assumed to consist predominantly of non-reactive organic P compounds, thus referred to as DOP) concentration increased from 0.10 to 0.22 μmol L~(-1), whereas soluble reactive P (SRP) concentration increased from 0.01 to 1.42 μmol L~(-1) along the transect. The proportion of DOP and SRP varied widely, with a large proportion of DOP in areas with low total dissolved P concentrations in lower latitudes and a large proportion of SRP in areas with high total dissolved P concentrations in higher latitudes. High demand for DOP in the lower latitudinal region would diminish the concentration of this pool relative to higher latitudinal regions where SRP is more abundant and would be preferentially utilized. The availability of SRP could have a significant impact on the concentration and probably on the composition of DOP. We show that P fractionation provides an important insight for discussing the marine P cycle.
机译：在北太平洋沿地表水样测量了几个有效定义的磷（P）含量。发现所有馏分中的P含量从亚热带边缘到北极地区向北增加。颗粒态有机磷（POP）浓度从9 nmol L〜（-1）增加到110 nmol L〜（-1）。 POP，PIP和叶绿素a之间的显着相关性表明这些P库与浮游植物细胞直接或间接相关。 PIP占横断面总P颗粒池的10-20％，表明它是该区域海洋P循环的重要组成部分。溶解的非反应性P（主要由非反应性有机P化合物组成，因此称为DOP）浓度从0.10增加到0.22μmolL〜（-1），而可溶性反应性P（SRP）浓度从0.01增加到0.2沿着样条为1.42μmolL〜（-1）。 DOP和SRP的比例差异很大，在较低纬度的总溶解P浓度较低的地区，DOP的比例很大，而在较高纬度的总溶解P浓度较高的地区，DOP的比例较大。相对于SRP含量较高且优先使用的较高纬度地区，较低纬度地区对DOP的高需求将降低该池的集中度。 SRP的可用性可能对DOP的浓度和组成可能有重大影响。我们表明，磷分级分离为讨论海洋磷循环提供了重要的见识。

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