The role of coastal zones in global biogeochemical cycles
The role of coastal zones in global biogeochemical cycles
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DOI：
10.1029/2004eo450005
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发表时间：
2004-11
期刊：
影响因子：
--
通讯作者：
R. Siefert;G. Plattner
中科院分区：
文献类型：
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作者：
R. Siefert;G. Plattner
独特而动态的沿海海洋是众多对全球地球化学循环和气候具有重要意义的大气物种的重要来源和汇。陆地和海洋之间的过渡区，包括作为物质和能量交换媒介的大气层，其特点是物理-地球化学耦合很强，形成一个内在复杂的系统。在海岸带发生的重要生物地球化学交换涉及水、营养物（例如，氮、磷、铁和二氧化硅），盐（例如，氯、溴和碘），碳（例如，溶解有机碳（DOC）、溶解无机碳（DIC）、颗粒有机碳（POC）和二氧化碳（CO2），反应性有机痕量气体（例如，含氮、卤化和含硫烃），和无机痕量气体（例如，一氧化二氮，N2O）。沿海区对人类特别重要，因为它们的特点是单位面积生产力高，占世界渔获量的大部分。此外，沿海生态系统在全球碳循环中发挥着重要作用，因为大量的碳和碳相关示踪剂在这些地区的陆地，海洋和大气之间移动。世界上大多数人口生活在沿海地区附近，这些地区的人为变化和相关气候变化不仅会对渔业，而且会对全球生物地球化学循环造成严重后果。
The unique and dynamic coastal ocean is a significant source and sink of a multitude of atmospheric species of importance to global biogeochemical cycles and climate. The transition zone between land and ocean, including the atmosphere as a medium for the exchange of matter and energy, is characterized by a strong physical-biogeochemical coupling, resulting in an inherently complex system. Important biogeochemical exchanges occurring in the coastal zone involve water, nutrients (e.g., nitrogen, phosphorous, iron, and silica),salts (e.g., chlorine,bromine,and iodine), carbon (e.g.,dissolved organic carbon (DOC),dissolved inorganic carbon (DIC), particulate organic carbon (POC), and carbon dioxide (CO2), reactive organic trace gases (e.g., nitrogenous, halogenated, and sulfurous hydrocarbons), and inorganic trace gases (e.g., nitrous oxide, N2O). Coastal zones are of particular importance to humans, as they are characterized by high per area productivity and are responsible for the majority of the world's fish catch. In addition, coastal ecosystems play an important role in the global carbon cycle as large fluxes of carbon and carbon-related tracers move between the land, ocean, and atmosphere in these regions. Most of the world's population lives near coastal zones, and anthropogenic changes and related climate change in these regions can pose serious consequences not only for fisheries but also for global biogeochemical cycles.