Journal ArticleDOI
A generalised model of forest productivity using simplified concepts of radiation-use efficiency, carbon balance and partitioning
Joe Landsberg,Richard H. Waring +1 more
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In this article, a stand growth model, called 3-PG (Use of Physiological Principles in Predicting Growth), calculates total carbon fixed (gross primary production; PG) from utilizable, absorbed photosynthetically active radiation (φp.a.u.), obtained by correcting the photosyntically active radiation absorbed by the forest canopy for the effects of soil drought, atmospheric vapour pressure deficits and stand age.About:
This article is published in Forest Ecology and Management.The article was published on 1997-08-01. It has received 1548 citations till now. The article focuses on the topics: Primary production & Photosynthetically active radiation.read more
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The human footprint in the carbon cycle of temperate and boreal forests
Federico Magnani,Maurizio Mencuccini,Marco Borghetti,Paul Berbigier,Frank Berninger,Sylvain Delzon,Achim Grelle,Pertti Hari,Paul G. Jarvis,Pasi Kolari,Andrew S. Kowalski,Harry Lankreijer,Beverly E. Law,Anders Lindroth,Denis Loustau,Giovanni Manca,John Moncrieff,Mark Rayment,Vanessa Tedeschi,Riccardo Valentini,John Grace +20 more
TL;DR: It is shown that the temporal dynamics following stand-replacing disturbances do indeed account for a very large fraction of the overall variability in forest carbon sequestration, and that mankind is ultimately controlling the carbon balance of temperate and boreal forests.
Journal ArticleDOI
Ecosystem carbon dioxide fluxes after disturbance in forests of North America
B. D. Amiro,Alan G. Barr,Jordan G. Barr,T. A. Black,Rosvel Bracho,Mathew Brown,Jiquan Chen,Kenneth L. Clark,Kenneth J. Davis,Ankur R. Desai,Sylvain Doré,Vic Engel,Jose D. Fuentes,Allen H. Goldstein,Michael L. Goulden,Thomas Kolb,Michael B. Lavigne,Beverly E. Law,Hank A. Margolis,Timothy A. Martin,J.H. McCaughey,Laurent Misson,M. Montes-Helu,Asko Noormets,James T. Randerson,Gregory Starr,Jingfeng Xiao +26 more
TL;DR: In this article, the authors summarize more than 180 site years of eddy covariance measurements of carbon dioxide flux made at forest chronosequences in North America and show that carbon loss from all ecosystems following a stand-replacing disturbance, becoming a carbon sink by 20 years for all ecosystems and by 10 years for most.
Journal ArticleDOI
Net primary production of forests: a constant fraction of gross primary production?
TL;DR: The constancy of the NPP/GPP ratio supports the possibility of greatly simplifying forest growth models and provides an incentive to renew efforts to understand the environmental factors affecting partitioning of NPP above and belowground.
Journal ArticleDOI
Deriving a light use efficiency model from eddy covariance flux data for predicting daily gross primary production across biomes
Wenping Yuan,Shuguang Liu,Guangsheng Zhou,Guoyi Zhou,Larry L. Tieszen,Dennis D. Baldocchi,Christian Bernhofer,Henry L. Gholz,Allen H. Goldstein,Michael L. Goulden,David Y. Hollinger,Yueming Hu,Beverly E. Law,Paul C. Stoy,Timo Vesala,Steven C. Wofsy +15 more
TL;DR: In this paper, the authors developed a light use efficiency (LUE) daily GPP model from eddy covariance (EC) measurements, which is driven by only four variables: normalized difference vegetation index (NDVI), photosynthetically active radiation (PAR), air temperature, and the Bowen ratio of sensible to latent heat flux (used to calculate moisture stress).
References
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Climate and the efficiency of crop production in Britain
TL;DR: The efficiency of crop production is defined in thermodynamic terms as the ratio of energy output (carbohydrate) to energy input (solar radiation). Temperature and water supply are the main climatic constraints on efficiency as mentioned in this paper.
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A general model of forest ecosystem processes for regional applications I. Hydrologic balance, canopy gas exchange and primary production processes
TL;DR: In this paper, an ecosystem process model is described that calculates the carbon, water and nitrogen cycles through a forest ecosystem, which uses leaf area index (lai) to quantify the forest structure important for energy and mass exchange, and represents a key simplification for regional scale applications.
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A critical appraisal of a combined stomatal-photosynthesis model for C3 plants
TL;DR: Mijhoff et al. as discussed by the authors used gas exchange measurements on Eucalyptus grandis leaves and data extracted from the literature to test a semi-empirical model of stomatal conductance for CO 2, g sc = g 0 + a 1 /[(c s −Γ)(1 + D s /D 0 )], where A is the assimilation rate; D s and c s are the humidity deficit and the CO 2 concentration at the leaf surface, respectively; g 0 is the conductance as A → 0 when leaf irradiance → 0
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Measurements of carbon sequestration by long‐term eddy covariance: methods and a critical evaluation of accuracy
TL;DR: In this paper, the turbulent exchanges of CO2 and water vapour between an aggrading deciduous forest in the north-eastern United States (Harvard Forest) and the atmosphere were measured from 1990 to 1994 using the eddy covariance technique.
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Hydraulic Limits to Tree Height and Tree Growth
Michael G. Ryan,Barbara J. Yoder +1 more
TL;DR: What determines the height to which a tree will grow in a particular region and climate is examined and mechanisms for growth including respiration hypothesis, nutrient limitation hypothesis, maturation hypothesis and the hydraulic limitation hypothesis are examined.