Data supporting Declining Ecosystem Respiration Linked to Nitrogen Deposition: Insights from a 26-Year FLUXNET Record

Data collected at the ICOS Ecosystem Site Loobos (NL-Loo) NL-Loo_soilresp_data.xlsx: Soil respiration data collected with chamber measurements on rings (Described in detail in Zhao et al., 2026) NL-Loo_SoilInventories: Soil Inventory data 2009 and 2024; Described in Zhao et al. (2026) and van der Molen et al. (2026) bottles_CO2 measurements&schedules.xlsx: Results of lab experiments on soil samples, described in van der Molen et al., 2026b Loodat1997_2023Gapfill.csv.out: Pre-ICOS Fluxes from Loobos produced with AltEddy, gapfilled and partitioned, 1997-2023 (Zhao et al., 2026) References: Zhao, H., Dolman, A.J., Elbers, J., Jans W., Kruijt, B., Moors, E., Snellen, H., Peters, W., Hutjes, R. and van der Molen, M. K.: The Loobos ecosystem first tower dataset: meteorology, turbulent fluxes and net ecosystem exchange (1996 to 2021). Earth Science System Data, in press, 2026. van der Molen, M.K., H. Snellen, R. Holzinger, J.G.M. Barten, H. Zhao, L. Ganzeveld, W. Peters, M. Krol, J. Vila-Guerau de Arrellano, B. Kruijt: The ICOS Ecosystem Station Loobos: a pine forest site exposed to atmospheric pollution, submitted to Earth System Science Data, 2026a. van der Molen, M.K., van de Sande, M., in ’t Zandt, M., Saccomandi, T., Baartman, S.L., Zhao, H. and Vilà -Guerau de Arellano, J.: Declining Ecosystem Respiration Linked to Nitrogen Deposition: Insights from a 26-3 Year FLUXNET Record. Global Change Biology, in press, 2026b.