当前位置：
X-MOL 学术
›
Hydrol. Process.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Understanding the peak growing season ecosystem water-use efficiency at four boreal fens in the Athabasca oil sands region
Hydrological Processes ( IF 2.8 ) Pub Date : 2021-07-26 , DOI: 10.1002/hyp.14323 Olena Volik 1 , Richard Petrone 1 , Eric Kessel 1 , Adam Green 1 , Jonathan Price 1
Hydrological Processes ( IF 2.8 ) Pub Date : 2021-07-26 , DOI: 10.1002/hyp.14323 Olena Volik 1 , Richard Petrone 1 , Eric Kessel 1 , Adam Green 1 , Jonathan Price 1
Affiliation
|
Ecosystem water-use efficiency (WUE), a ratio between gross ecosystem production (GEP) and water loss through evapotranspiration (ET) can be helpful for the assessment of coupled peatland carbon and water cycles under anthropogenic changes in the Athabasca oil sands region (AOSR) where extensive oil sands development has been occurring since the 1960's. As such, this study assessed multiyear peak growing season variability of WUE at four fens (poor treed, poor open, treed moderate-rich, open saline) near Fort McMurray using the eddy covariance technique combined with a set of environmental variables. Freshwater fens were characterized by WUE values within the range reported from other boreal wetlands while a saline fen had significantly lower values of WUE. Negative correlation (Rs < −0.55, p < 0.05) between WUE and net radiation was observed. Moisture conditions were responsible for interannual differences in WUE, whereby increasing WUE under wetter conditions was observed. However, such a pattern was offset by decreased air temperature (Tair) resulting in moisture oversupply. This study also revealed a negative effect of wildfire on WUE due to a prominent decline in GEP and a moderate decrease in ET. WUE can be useful for monitoring the functioning of natural and constructed fens, but a better understanding of WUE variability under a wide range of climatic conditions with respect to differences in vegetation is required.
中文翻译：
了解阿萨巴斯卡油砂地区四个北方沼泽的旺季生态系统用水效率
生态系统用水效率 (WUE)，即生态系统总产量 (GEP) 与蒸发蒸腾损失 (ET) 之间的比率，有助于评估阿萨巴斯卡油砂地区 (AOSR) 人为变化下的泥炭地碳水循环耦合) 自 1960 年代以来，油砂开发一直在进行。因此，本研究使用涡流协方差技术结合一组环境变量，评估了麦克默里堡附近四个沼泽地（树木不足、开阔、树木茂盛、开放盐水）多年的高峰生长季节变异性。淡水沼泽的 WUE 值在其他北方湿地报告的范围内，而咸淡水沼泽的 WUE 值显着较低。负相关（R s < -0.55，p < 0.05) 观察到 WUE 和净辐射之间。水分条件是造成 WUE 年际差异的原因，因此观察到在更潮湿的条件下 WUE 会增加。然而，这种模式被降低的空气温度 (T air )抵消，导致水分供应过剩。该研究还揭示了由于 GEP 显着下降和 ET 适度下降，野火对 WUE 的负面影响。WUE 可用于监测天然和人工围栏的功能，但需要更好地了解各种气候条件下与植被差异相关的 WUE 变异性。
更新日期：2021-08-10
中文翻译：
了解阿萨巴斯卡油砂地区四个北方沼泽的旺季生态系统用水效率
生态系统用水效率 (WUE)，即生态系统总产量 (GEP) 与蒸发蒸腾损失 (ET) 之间的比率，有助于评估阿萨巴斯卡油砂地区 (AOSR) 人为变化下的泥炭地碳水循环耦合) 自 1960 年代以来，油砂开发一直在进行。因此，本研究使用涡流协方差技术结合一组环境变量，评估了麦克默里堡附近四个沼泽地（树木不足、开阔、树木茂盛、开放盐水）多年的高峰生长季节变异性。淡水沼泽的 WUE 值在其他北方湿地报告的范围内，而咸淡水沼泽的 WUE 值显着较低。负相关（R s < -0.55，p < 0.05) 观察到 WUE 和净辐射之间。水分条件是造成 WUE 年际差异的原因，因此观察到在更潮湿的条件下 WUE 会增加。然而，这种模式被降低的空气温度 (T air )抵消，导致水分供应过剩。该研究还揭示了由于 GEP 显着下降和 ET 适度下降，野火对 WUE 的负面影响。WUE 可用于监测天然和人工围栏的功能，但需要更好地了解各种气候条件下与植被差异相关的 WUE 变异性。
京公网安备 11010802027423号