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Hydro-ecological effects of changing Arctic river and lake ice covers: a review

机译：北极河流和湖泊冰盖变化的水生态效应：综述

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摘要

Freshwater ice is an integral part of the hydrologic regimes of cold environments. It controls the ecology of related aquatic systems and is important economically, through the facilitation of winter transport and via generation of extreme hydrologic events. Given projected changes in future climate, concern has been raised about related changes in freshwater ice. This paper reviews the status and trends in records of lake and river ice around the circumpolar North from traditional observations, remote sensing and paleo-sources. The temporal and spatial variability in trends are evaluated with relation to climatic conditions. Rapid changes experienced in freeze-up and break-up timing for high-latitude lakes, compared to those at more southerly locations, are particularly notable. Also considered are the nature and implications of changes in future freshwater-ice regimes that will have cascading effects on cold-region hydrology and a suite of hydro-ecological conditions including UV radiation receipts, habitat quality and availability, fisheries productivity and contaminant pathways. Overall, the duration and event timing of river and lake ice are proving to be useful indicators of climate change. Considering the scope and significance of ice-cover changes on northern hydro-ecology, a recommendation is made to place more emphasis on long-term and spatially diverse monitoring of freshwater ice.
机译：淡水冰是寒冷环境水文状况中不可或缺的一部分。它控制相关水生系统的生态，并且通过促进冬季运输和产生极端水文事件在经济上具有重要意义。考虑到未来气候的预计变化，人们对淡水冰的相关变化提出了关注。本文从传统观测，遥感和古源资料回顾了北部极地周围湖泊和河流冰雪记录的现状和趋势。趋势的时空变化是与气候条件相关的。与更南端的湖泊相比，高纬度湖泊在冻结和破裂时间上的快速变化尤为明显。还考虑了未来淡水冰域变化的性质和影响，这些变化将对寒冷地区水文学和一系列水生态条件（包括紫外线辐射接收量，栖息地质量和可利用性，渔业生产力和污染物途径）产生连锁效应。总体而言，河冰和湖冰的持续时间和事件时间被证明是气候变化的有用指标。考虑到冰盖变化对北部水生态的影响范围和重要性，建议将重点更多地放在长期和空间上对淡水冰的监测上。

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  • 来源
    《Nordic hydrology》 |2010年第6期|p.454-461|共8页
  • 作者

    Terry D. Prowse; Kirsten Brown;

  • 作者单位

    water and Climate Impacts Research centre, Environment Canada/Department of Geography, University of Victoria, PO Box 3060 STN CSC, Victoria, British Columbia, Canada V8W 3R4;

    water and Climate Impacts Research centre, Environment Canada/Department of Geography, University of Victoria, PO Box 3060 STN CSC, Victoria, British Columbia, Canada V8W 3R4;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    climate change; floods; hydro-ecology; lake ice; low flows; river ice;

    机译：气候变化;洪水水生态学;湖冰流量低;河冰;

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