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A review of simulated climate change impacts on groundwater resources in Eastern Canada
Canadian Water Resources Journal ( IF 1.7 ) Pub Date : 2019-02-08 , DOI: 10.1080/07011784.2018.1503066
Marie Larocque 1 , Jana Levison 2 , Alexandre Martin 1 , Diane Chaumont 3
Affiliation  

In Eastern Canada, groundwater is the main water supply for most of the rural regions and in many large urban communities. An understanding of the impacts of climate change on this resource is crucial for sustainable water management in this region. The objectives of this paper was to summarize the state of knowledge about possible climate change impacts on groundwater dynamics in Eastern Canada, thus providing a clearer understanding of future conditions. Twenty-two studies are reviewed including Ontario, Québec, New Brunswick, Nova Scotia, and Prince Edward Island, to identify the impacts on groundwater recharge and river baseflows. The studies disagree in their estimates of changes in future recharge conditions, and no trend from West to East was revealed. This could be due to the use of different modelling approaches (model type, climate change scenario, future horizon). Nonetheless, more inter-annual variability during the summer and earlier snowmelt periods causing seasonal shifts in the recharge cycle are expected. The studies show that base flows could decrease, which could induce critical conditions for water supplies and for ecosystems. This review provided new insights that lead to the following recommendations for future studies: 1) use a variety of climate models and emission scenarios; 2) promote the use of integrated models when possible; 3) study long-term climate change impacts on groundwater resources at different scales; 4) simulate the combined effects of climate change and other pressures; and 5) develop models that cover other regions of Eastern Canada as dictated by stakeholders and water managers.



中文翻译:

模拟气候变化对加拿大东部地下水资源的影响的评论

在加拿大东部,地下水是大多数农村地区和许多大型城市社区的主要供水。了解气候变化对该资源的影响对于该地区的可持续水资源管理至关重要。本文的目的是总结有关加拿大东部地区可能的气候变化对地下水动力学的影响的知识状态,从而使人们对未来的状况有更清晰的了解。审查了22个研究,包括安大略省,魁北克省,新不伦瑞克省,新斯科舍省和爱德华王子岛,以确定对地下水补给和河流基流的影响。这些研究在对未来补给条件变化的估计中存在分歧,并且没有揭示出从西到东的趋势。这可能是由于使用了不同的建模方法(模型类型,气候变化情景,未来展望)。尽管如此,预计夏季和较早融雪期的年际变化会导致补给周期的季节性变化。研究表明,基础流量可能减少,这可能引发供水和生态系统的关键条件。这次审查提供了新的见解,可为今后的研究提出以下建议:1)使用各种气候模型和排放情景;2)尽可能推广使用集成模型;3)研究长期气候变化对不同规模地下水资源的影响;4)模拟气候变化和其他压力的综合影响;5)根据利益相关者和水管理者的指示,开发涵盖加拿大东部其他地区的模型。预计夏季和较早融雪期的年际变化会更大,从而导致补给周期发生季节性变化。研究表明,基础流量可能减少,这可能引发供水和生态系统的关键条件。这次审查提供了新的见解,可为今后的研究提出以下建议:1)使用各种气候模型和排放情景;2)尽可能推广使用集成模型;3)研究长期气候变化对不同规模地下水资源的影响;4)模拟气候变化和其他压力的综合影响;5)根据利益相关者和水管理者的指示,开发涵盖加拿大东部其他地区的模型。预计夏季和较早融雪期的年际变化会更大,从而导致补给周期发生季节性变化。研究表明,基础流量可能减少,这可能引发供水和生态系统的关键条件。这次审查提供了新的见解,可为今后的研究提出以下建议:1)使用各种气候模型和排放情景;2)尽可能推广使用集成模型;3)研究长期气候变化对不同规模地下水资源的影响;4)模拟气候变化和其他压力的综合影响;5)根据利益相关者和水管理者的指示,开发涵盖加拿大东部其他地区的模型。

更新日期:2019-02-08
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