Blar i NIBIO Brage på forfatter "Meissner, Helge Rainer"
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Comparing sap flow calculations from Heat Field Deformation (HFD) and Linear Heat Balance (LHB) methods
Zhao, Junbin; Lange, Holger; Meissner, Helge Rainer; Bright, Ryan M. (Peer reviewed; Journal article, 2022-06-15)Heat Field Deformation (HFD) is a widely used method to measure sap flow of trees based on empirical relationships between heat transfer within tree stems and the sap flow rates. As an alternative, the Linear Heat Balance ... -
Estimating Carbon Sink Strength of Norway Spruce Forests Using Machine Learning
Zhao, Junbin; Lange, Holger; Meissner, Helge Rainer (Peer reviewed; Journal article, 2022-10-19)Forests sequester atmospheric carbon dioxide (CO2) which is important for climate mitigation. Net ecosystem production (NEP) varies significantly across forests in different regions depending on the dominant tree species, ... -
Gap-filling continuously-measured soil respiration data: A highlight of time-series-based methods
Zhao, Junbin; Lange, Holger; Meissner, Helge Rainer (Peer reviewed; Journal article, 2020-05-15)Soil respiration is an important ecosystem process that releases carbon dioxide into the atmosphere. While soil respiration can be measured continuously at high temporal resolutions, gaps in the dataset are inevitable, ... -
Skogens helsetilstand i Norge. Resultater fra skogskadeovervåkingen i 2021
Timmermann, Volkmar; Børja, Isabella; Clarke, Nicholas; Eriksen, Rune; Gohli, Jostein; Hylen, Gro; Jepsen, Jane Uhd; Krokene, Paal; Lange, Holger; Meissner, Helge Rainer; Nagy, Nina Elisabeth; Nordbakken, Jørn-Frode; Solberg, Sverre; Solheim, Halvor; Vindstad, Ole Petter Laksforsmo; Økland, Bjørn; Aas, Wenche (NIBIO Rapport, Research report, 2023)Skogens helsetilstand påvirkes i stor grad av klima og værforhold, enten direkte ved tørke, frost og vind, eller indirekte ved at klimaet påvirker omfanget av soppsykdommer og insektangrep. Klimaendringene og den forventede ...