Canopy reflectance, photosynthesis and transpiration

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منابع مشابه

Canopy Reflectance, Photosynthesis, and Transpiration. II. The Role of Biophysics in the Linearity of Their Interdependence

A two-stream approximation model of radiative transfer is used to calculate values of hemispheric canopy reflectance in the visible and near-infrared wavelength intervals. Simple leaf models of photosynthesis and stomatal resistance are integrated over leat orientation and canopy depth to obtain estimates of canopy photosynthesis and bulk stomatal or canopy resistance. The simple ratio (SR) of ...

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Canopy Reflectance, Photosynthesis, and Transpiration. III. A Reanalysis Using Improved Leaf Models and a New Canopy Integration Scheme

1 h e theoretwal analyses of Sellers (1985, 1987), which hnked canopy spectral reflectance properties to (unstressed) photosynthetw rates and conductances, are cmtwally remewed and significant shortcomings are ~dent~fied These are addressed m thin article principally through the incorporation of a more sophmtwated and reahstw treatment of leaf phystological processes within a new canopy integra...

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Canopy near-infrared reflectance and terrestrial photosynthesis

Global estimates of terrestrial gross primary production (GPP) remain highly uncertain, despite decades of satellite measurements and intensive in situ monitoring. We report a new approach for quantifying the near-infrared reflectance of terrestrial vegetation (NIRV). NIRV provides a foundation for a new approach to estimate GPP that consistently untangles the confounding effects of background ...

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Carbonyl sulfide (COS) as a tracer for canopy photosynthesis, transpiration and stomatal conductance: potential and limitations

The theoretical basis for the link between the leaf exchange of carbonyl sulfide (COS), carbon dioxide (CO(2)) and water vapour (H(2)O) and the assumptions that need to be made in order to use COS as a tracer for canopy net photosynthesis, transpiration and stomatal conductance, are reviewed. The ratios of COS to CO(2) and H(2)O deposition velocities used to this end are shown to vary with the ...

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Carbon dioxide enrichment and temperature effects on cotton canopy photosynthesis, transpiration, and water-use efficiency 1

The objectives of this study were to evaluate effects of ambient and double ambient [ CO2 ] at a range of growing temperatures on photosynthesis, respiration, transpiration, water-use efficiency and dry matter accumulation of cotton plants (Gossypium hirsutum L., cv. DPL 50). In Experiment I, plants were grown outdoors untiJ first bloom, then transferred into naturally lit growth chambers and g...

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ژورنال

عنوان ژورنال: International Journal of Remote Sensing

سال: 1985

ISSN: 0143-1161,1366-5901

DOI: 10.1080/01431168508948283