文章基本信息

标题：The age of water and carbon in lake‐catchments: A simple dynamical model
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作者：Christopher J. Duffy ; Hilary A. Dugan ; Paul C. Hanson 等
期刊名称：Limnology and Oceanography Letters
电子版ISSN：2378-2242
出版年度：2018
卷号：3
期号：3
页码：236-245
DOI：10.1002/lol2.10070
出版社：Wiley
摘要：The rate at which water and carbon move through lake‐catchments influences carbon metabolism, storage, and transport to down‐stream ecosystems. This article focuses on conceptual‐mathematical modeling of the “age” of water and carbon in lake‐catchment systems, where “age” is defined as the time since the water parcel and environmental tracer entered the system. We test a framework for implementing models and data for the Lake Mendota lake‐catchment system. We show that the lake‐catchment system provides the basis for predicting time varying age of carbon along flow paths, and the residence times of dissolved organic carbon (DOC) leaving each compartment, which further helps to provide a deeper understanding of fundamental biogeochemical dynamic processes of carbon and water cycling within the lake‐catchment system. Three scenarios illustrate how the age of DOC might evolve from climate or land cover change that alters the hydrologic water balance through increases or decreases in lake‐catchment precipitation and evapotranspiration.