In-stream metabolism and atmospheric carbon sequestration in a groundwater-fed karst stream

详细信息    查看全文

• 作者：Junbing Pu^a ; ^{junbingpu@karst.ac.cn} ; Jianhong Li^a ; Mitra B. Khadka^b ; Jonathan B. Martin^b ; Tao Zhang^a ; Shi Yu^a ; Daoxian Yuan^a
• 关键词：Carbon sequestration ; Dissolved inorganic carbon ; In-stream metabolism ; Aquatic phototrophs ; Diel cycle ; Karst system
• 刊名：Science of The Total Environment
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：579
• 期：Complete
• 页码：1343-1355
• 全文大小：2208 K
• 卷排序：579

文摘

In-stream metabolism controls diel cycles of DIC concentrations of karst streams. DIC uptake by photosynthesis exceeds DIC release by respiration at the study site. The excess uptake of 73 t C km− 2 a− 1 is about half the oceanic biological pump. The in-stream photosynthetic C sink could affect the global carbon budget.