Landscape matters: Predicting the biogeochemical effects of permafrost thaw on aquatic networks with a state factor approach
Landscape matters: Predicting the biogeochemical effects of permafrost thaw on aquatic networks with a state factor approach
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DOI：
10.1002/ppp.2057
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发表时间：
2020-05-27
影响因子：
5
通讯作者：
Abbott, Benjamin W.
中科院分区：
文献类型：
--
作者：
Tank, Suzanne E.;Vonk, Jorien E.;Abbott, Benjamin W.
多年冻土融化已被广泛观察到改变受体水生生态系统的土壤地球化学。然而，来自不同区域的研究表明，效果存在很大差异。在本文中，我们提出了一个状态因子的方法来预测释放和运输的物质从冻土通过水生网络。受汉斯珍妮的土壤形成因素的开创性描述的启发，并根据越来越多的研究机构的主题，我们提出了一系列的国家因素，包括救济，冰含量，永冻范围，和母材将限制和指导地球化学效应解冻随着时间的推移。我们探索国家因素驱动的变化，解冻反应使用一系列的案例研究，从不同地区的冻土影响的北方，还描述了独特的缩放考虑相关的移动的和综合性质的水生网络。虽然我们的跨系统审查发现，对于一些非地球化学成分（如营养素），对解冻的反应是一致的，但其他成分（如溶解的有机物和颗粒）的反应则要多变得多。我们认为，有针对性的，假设驱动的调查的影响，国家因素的变化将加强我们的能力，预测不同的和快速变化的北方景观解冻的地球化学效应。
Permafrost thaw has been widely observed to alter the biogeochemistry of recipient aquatic ecosystems. However, research from various regions has shown considerable variation in effect. In this paper, we propose a state factor approach to predict the release and transport of materials from permafrost through aquatic networks. Inspired by Hans Jenny's seminal description of soil-forming factors, and based on the growing body of research on the subject, we propose that a series of state factors-including relief, ice content, permafrost extent, and parent material-will constrain and direct the biogeochemical effect of thaw over time. We explore state-factor-driven variation in thaw response using a series of case studies from diverse regions of the permafrost-affected north, and also describe unique scaling considerations related to the mobile and integrative nature of aquatic networks. While our cross-system review found coherent responses to thaw for some biogeochemical constituents, such as nutrients, others, such as dissolved organics and particles, were much more variable in their response. We suggest that targeted, hypothesis-driven investigation of the effects of state factor variation will bolster our ability to predict the biogeochemical effects of thaw across diverse and rapidly changing northern landscapes.