Original title: Dissolved and gaseous nitrogen losses in forests controlled by soil nutrient stoichiometry
Authors: Oulehle, Filip ; Chuman, T. ; Hruška, Jakub ; Krám, Pavel ; Navrátil, Tomáš ; Tesař, Miroslav ; Ač, Alexander ; Urban, Otmar
Document type: Papers
Conference/Event: Hydrologie malého povodí 2023, Praha (CZ), 20230530
Year: 2023
Language: eng
Abstract: This study investigates the consequences of chronic nitrogen deposition in forests, including its effects on soil and surface water quality, and greenhouse gas emissions. To predict these effects, the authors explore the controls over dissolved and gaseous nitrogen fluxes in temperate forests. Their findings indicate that stream leaching losses of dissolved nitrogen correspond with the nutrient stoichiometry\nof the forest floor, with stream N losses increasing as ecosystems progress towards phosphorus limitation. Soil nitrogen storage increases with oxalate extractable iron and aluminium content. The authors estimate soil gaseous losses based on 15 N stocks, which averaged 2.5±2.2 kg N ha-1 year-1 , comprising 20±14% of total nitrogen deposition. They also extrapolate the current gaseous nitrogen loss flux from forests globally to be 8.9 Tg N year-1 , which represents 39% of current nitrogen deposition to forests worldwide.
Keywords: carbon; catchment; denitrification; isotope; mass balance; nitrogen; sequestration
Host item entry: Hydrologie malého povodí 2023, ISBN 978-80-87117-22-4

Institution: Global Change Research Institute AS ČR (web)
Document availability information: Fulltext is available in the digital repository of the Academy of Sciences.
Original record: https://hdl.handle.net/11104/0353140

Permalink: http://www.nusl.cz/ntk/nusl-614146


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