Modelling Winter Oxygen Depletion Rates in Ice-Covered Temperate Zone Lakes in Canada
Modelling Winter Oxygen Depletion Rates in Ice-Covered Temperate Zone Lakes in Canada
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模拟加拿大冰雪覆盖的温带湖泊冬季氧气消耗率
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
E. Prepas
中科院分区：
文献类型：
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作者：
J. Babin;E. Prepas
在1982-83年的冬季，对阿尔伯塔中部的13个湖泊测定了冬季耗氧率（WODR）（g O2·m-2·d-1）。虽然溶解氧减少，在所有湖泊的第一个3.5个月后冻结，减少是非线性的。 冻结后观察到最高的WODR。非线性WODR与湖泊生产力的两个估计值（即总磷和叶绿素a，P <0.05）显著相关，但与形态测量学（如平均深度）不显著相关。 当从阿尔伯塔湖的WODR被视为线性的，使与其他研究进行比较，发现WODR和形态之间的相关性，和WODR和夏季生产力的估计。这些关系与以前在另外两个地区的冰封湖泊上工作的研究人员的观察结果有很大不同。当其他冰雪覆盖的湖泊的数据与本研究相结合时，WODR最好是从平均夏季TP（TPsu，mg·cm-2）的组合中预测的。
Winter oxygen depletion rates (WODR) (g O2∙m−2∙d−1) were determined for 13 lakes in central Alberta during the winter of 1982–83. Although dissolved oxygen decreased in all lakes for the first 3.5 mo after freeze-up, the decreases were nonlinear. The highest WODR were observed just after freeze-up. The nonlinear WODR were significantly correlated with two estimates of lake productivity (i.e. total phosphorus and chlorophyll a, P < 0.05) but were not significantly correlated with morphometry (e.g. mean depth). When the WODR from the Albertan lakes were treated as linear, to enable a comparison with other studies, correlations were found between WODR and morphometry, and WODR and estimates of summer productivity. These relationships were significantly different from observations by previous investigators who worked on ice-covered lakes in two other regions. When data from other ice-covered lakes were combined with this study, WODR were best predicted from a combination of mean summer TP (TPsu in mg∙m−2) in ...