Photosynthetic production of Scots pine in the natural environment
نویسندگان
چکیده
منابع مشابه
Photosynthetic responses of Scots pine to elevated CO2 and nit
trees, age 25--30 years, were subjected to two soil-nitrogensupply regimes and to elevated atmospheric CO2 concentrations by the branch-in-bag method from April 15 to September 15 for two or three years. Gas exchange in detached shoots was measured in a diffuse radiation field. Seven parameters associated with photosynthetic performance and two describing stomatal conductance were determined to...
متن کاملThe effect of temperature and PAR on the annual photosynthetic production of Scots pine in northern Finland during 1906–2002
The annual photosynthetic production of Scots pine (Pinus sylvestris) was simulated for 1906–2002 for a location in northern Finland. We used the PhenPhoto model, which combines two key features of photosynthesis: the response to instantaneous radiation and the acclimation to the annual cycle. The input data for the PhenPhoto model include instantaneous photosynthetically active radiation (PAR)...
متن کاملShoot structure and photosynthetic efficiency along the light gradient in a Scots pine canopy.
We examined the effects of structural and physiological acclimation on the photosynthetic efficiency of Scots pine (Pinus sylvestris L.) shoots. We estimated daily light interception (DLI) and photosynthesis (DPHOT) of a number of sample shoots situated at different positions in the canopy. Photosynthetic efficiency (epsilon) was defined as the ratio of DPHOT to the potential daily light interc...
متن کاملVOC emissions of Scots pine
Temperature and light dependence of the VOC emissions of Scots pine V. Tarvainen, H. Hakola, H. Hellén, J. Bäck, P. Hari, and M. Kulmala Finnish Meteorological Institute, Sahaajankatu 20 E, FI-00880 Helsinki, Finland Department of Forest Ecology, University of Helsinki, Helsinki, Finland Department of Physical Sciences, University of Helsinki, Helsinki, Finland Received: 10 August 2004 – Accept...
متن کاملAssessing the light environment for Scots pine in the functional- structural tree model LIGNUM
The turbid medium approaches (e.g. Sinoquet et. al., 2001) consider the transmission of light through a continuous medium. To model the spatial heterogeneousness of the foliage the canopy is divided into volume elements and the properties of the foliage contained in a volume element is described in an aggregated manner. The volume element can be for example a horizontal layer of foliage or a cu...
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ژورنال
عنوان ژورنال: Acta Forestalia Fennica
سال: 1988
ISSN: 0001-5636
DOI: 10.14214/aff.7649