Changes in the seasonal snow cover of alpine regions and its effect on soil processes: A review
Changes in the seasonal snow cover of alpine regions and its effect on soil processes: A review
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DOI：
10.1016/j.quaint.2006.10.027
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发表时间：
2007-03-01
影响因子：
2.2
通讯作者：
Freppaz, Michele
中科院分区：
文献类型：
--
作者：
Edwards, Anthony C.;Scalenghe, Riccardo;Freppaz, Michele
在年度最大积雪量下，积雪可覆盖北半球一半以上的陆地面积，其中三分之一经历季节性积雪。每年积雪形成过程中形成的精确条件对以下方面具有影响：(i) 土壤微生物活动和养分转化； (ii) 积雪保留大气中衍生溶质的能力； (iii) 融雪期间溶质从积雪中优先洗脱和快速流失； (iv)溶质的浸出。年积雪的长期记录表明，积雪特征已经发生了巨大的区域性变化。随之而来的冻融事件频率和时间的变化以及人类引起的冻融事件对土壤微生物过程的破坏性和选择性影响的证据表明，这对山地生态系统的养分循环和功能具有更广泛的影响。这篇评论的重点是高山景观。 (c) 2006 Elsevier Ltd 和 INQUA。版权所有。
At its maximum annual development, snow can cover more than half the Northern Hemisphere land area with one-third experiencing seasonal snow cover. The precise conditions that develop during the annual pattern of snowpack development formation have implications for: (i) soil microbiological activity and nutrient transformations; (ii) the capacity of the accumulating snowpack to retain atmospheric derived solutes; (iii) preferential elution and rapid runoff of solutes from the snowpack during periods of thaw; and (iv) leaching of solutes. Long-term records of annual snow accumulation suggest that substantial, regional scale shifts in snowpack characteristics have been occurring. The accompanying changes in the frequency and timing of freeze-thaw episodes and the evidence of their disruptive and selective influence upon soil microbial processes, when human induced, suggests there are wider implications for nutrient cycling and functioning of mountain ecosystems. This review is focused on alpine landscapes. (c) 2006 Elsevier Ltd and INQUA. All rights reserved.