文章基本信息

标题：Carbon Burial in Young Tropical Reservoirs Is Higher at Lower Latitudes*
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作者：Elizabeth Sikar ; Marco Aurelio dos Santos ; Ana Carolina Moterani 等
期刊名称：Journal of Geoscience and Environment Protection
印刷版ISSN：2327-4336
电子版ISSN：2327-4344
出版年度：2021
卷号：9
期号：12
页码：84-99
DOI：10.4236/gep.2021.912006
语种：English
出版社：Scientific Research Pub
摘要：Man-made environments such as tropical hydroelectric reservoirs alter the preexisting carbon (C) cycle and remove C from circulation through burial in sediments. Carbon burial (CB) was measured using the silica-tracer method during four field surveys in the less than six-year-old Belo Monte tropical reservoir. Fresh C sedimentation was also measured. Belo Monte’s CB median rate 276 (n = 84; min 0; max 352,625 mg C·m-2·d-1) is within the range (230 to 436 mg C·m-2·d-1) of CB rates measured further downstream at the Xingu Ria and higher than the averaged over 50 years oceanic rate 244 mg C·m-2·d-1 estimated for an increasingly deoxygenated ocean. Carbon burial median rates of tropical reservoirs with similar age and trophic state correlate inversely with latitude at a rate of 17.5 mg C·m-2·d-1 per degree. Carbon burial efficiency of these reservoirs correlates positively with latitude at a ratio of 0.22% per degree.
关键词：CarbonBurialSedimentsHydroelectric Reservoirs