Open AccessJournal Article
Water balance of a boreal Scots pine forest
Hannue Ilvesniemi,Jukka Pumpanen,Remko A. Duursma,Pertti Hari,Petri Keronen,Pasi Kolari,Markku Kulmala,Ivan Mammarella,Eero Nikinmaa,Üllar Rannik,Toivo Pohja,Erkki Siivola,Timo Vesala +12 more
TLDR
In this paper, the authors report the long-term measurements of precipitation, throughfall, snow depth, soil water content, runoff and evapotranspiration and discuss the uncertainties related to different measurements.Abstract:
In terrestrial ecosystems, the amount and availability of water is one of the key factors affecting the net primary productivity and other biological processes of the system. At the SMEAR-II station, we have monitored the water balance of two adjacent micro-catchments since 1997. In this study, we report the long-term measurements of precipitation, throughfall, snow depth, soil water content, runoff and evapotranspiration and the annual water balances based on these measurements and discuss the uncertainties related to different measurements. The proportion of throughfall, evapotranspiration and runoff was 67%, 43% and 32% of the annual precipitation, respectively. The measured amounts of evapotranspiration and runoff were so small that the aim of closing the water balance of the studied system was not fully reached. The largest uncertainties are related to the evapotranspiration measurements and the determination of the actual surface area of the catchments used in the calculation of the runoff.read more
Citations
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How eddy covariance flux measurements have contributed to our understanding of Global Change Biology
TL;DR: This review explores how carbon and water fluxes of the world's ecosystem are responding to a suite of co-varying environmental factors, like sunlight, temperature, soil moisture and carbon dioxide and investigates whether long term trends in carbon andWater fluxes are emerging in various ecological and climate spaces.
Journal ArticleDOI
Pinus sylvestris as a missing source of nitrous oxide and methane in boreal forest
Katerina Machacova,Jaana Bäck,Anni Vanhatalo,Elisa Halmeenmäki,Pasi Kolari,Ivan Mammarella,Jukka Pumpanen,Manuel Acosta,Otmar Urban,Mari Pihlatie +9 more
TL;DR: The contribution of pine trees to the N2O and CH4 exchange of the boreal pine forest seems to increase considerably under high soil water content, thus highlighting the urgent need to include tree-emissions in greenhouse gas emission inventories.
Journal ArticleDOI
CASSIA--a dynamic model for predicting intra-annual sink demand and interannual growth variation in Scots pine.
TL;DR: A dynamic growth model 'carbon allocation sink source interaction' (CASSIA) is constructed that calculates tree-level carbon balance from photosynthesis, respiration, phenology and temperature-driven potential structural growth of tree organs and dynamics of stored nonstructural carbon and their modifying influence on growth.
Journal ArticleDOI
Changes in biogeochemistry and carbon fluxes in a boreal forest after the clear-cutting and partial burning of slash
Liisa Kulmala,Hermanni Aaltonen,Frank Berninger,Antti-Jussi Kieloaho,Janne Levula,Jaana Bäck,Pertti Hari,Pasi Kolari,Janne Korhonen,Markku Kulmala,Eero Nikinmaa,Mari Pihlatie,Timo Vesala,Jukka Pumpanen +13 more
TL;DR: In this article, the changes in the soil properties and fluxes of soil CO2, CH4 and volatile organic compound (VOC) fluxes following a clear-cut (CC) and prescribed burning of slash (BCC) over a three year time period in a mature spruce forest.
Journal ArticleDOI
Oxalate secretion by ectomycorrhizal Paxillus involutus is mineral-specific and controls calcium weathering from minerals
Achim Schmalenberger,Achim Schmalenberger,Adele L. Duran,Andrew W. Bray,Jonathan Bridge,Steeve Bonneville,Steeve Bonneville,Liane G. Benning,Maria E. Romero-Gonzalez,Jonathan R. Leake,Steven A. Banwart +10 more
TL;DR: Findings confirmed the role of mineral-specific oxalate exudation in ectomycorrhizal weathering to dissolve calcium bearing minerals, thus contributing to the geochemical carbon cycle.
References
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Journal ArticleDOI
FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
Dennis D. Baldocchi,Eva Falge,Lianhong Gu,Richard J. Olson,David Y. Hollinger,Steven W. Running,P. M. Anthoni,Ch. Bernhofer,Kenneth J. Davis,Robert G. Evans,Jose D. Fuentes,Allen H. Goldstein,Gabriel G. Katul,Beverly E. Law,Xuhui Lee,Yadvinder Malhi,Tilden P. Meyers,William Munger,Walter C. Oechel,Kim Pilegaard,Hans Peter Schmid,Riccardo Valentini,Shashi B. Verma,Timo Vesala,Kell B. Wilson,S. C. Wofsy +25 more
TL;DR: The FLUXNET project as mentioned in this paper is a global network of micrometeorological flux measurement sites that measure the exchanges of carbon dioxide, water vapor, and energy between the biosphere and atmosphere.
FLUXNET: A New Tool to Study the Temporal and Spatial Variability of Ecosystem-Scale Carbon Dioxide, Water Vapor, and Energy Flux Densities
Dennis D. Baldocchi,Eva Falge,Lianhong Gu,Richard J. Olson,David Y. Hollinger,Steven W. Running,P. M. Anthoni,Christian Bernhofer,Kenneth J. Davis,Robert G. Evans +9 more
Journal ArticleDOI
The energy balance closure problem: an overview.
TL;DR: It will be shown that former assumptions that measuring errors or storage terms are the reason for the unclosed energy balance do not stand up because even turbulent fluxes derived from documented methods and calibrated sensors, net radiation, and ground heat fluxes cannot close the energy balance.
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