A satellite-based biosphere parameterization for net ecosystem CO2exchange: Vegetation Photosynthesis and Respiration Model (VPRM)
نویسندگان
چکیده
منابع مشابه
Polar Vegetation Photosynthesis and Respiration Model (PolarVPRM)
Introduction Conclusions References Tables Figures
متن کاملDecrease in net photosynthesis caused by respiration.
CO(2) exchange between air and leaf is conceived as a current along a resistor with a respiratory current, unaffected by CO(2) concentration, entering the resistor. The conclusion follows that a plant placed in an atmosphere free of CO(2) will increase the CO(2) concentration to the compensation concentration along a curve determined by the resistor and the volume of the atmosphere. This was ve...
متن کاملTransient Climate Change and Net Ecosystem Production ofthe Terrestrial Biosphere
In this sensitivity study, we have applied the Terrestrial Ecosystem Model ((TEM) version 4.1) to examine the responses of terrestrial ecosystems totransient changes in atmospheric CO2 concentration and climate in the 21st century at the scales of the globe, biomes, latitudinal gradient, and economic regions. Three predictions of transient change in climate and atmospheric CO2 concentration i t...
متن کاملEstimating Ecosystem Respiration Using Satellite Remote Sensing
SUMMARY Here we report a method for estimating ecosystem respiration (R e) by exclusive use of remotely sensed land surface temperature (T r) from NASA's moderate resolution imaging spectroradiometer (MODIS) sensors. A combination of daytime and nighttime MODIS T r data was used to model an 8-day mean value of land surface temperature (T r(mean)), which was then used in a modified Arrhenius-bas...
متن کاملEstimating Net Ecosystem Exchange of Carbon Using the Normalized Difference Vegetation Index and an Ecosystem Model
T e evaluation and prediction of changes in carbon dynamics at the ecosystem level is a key issue in studies of global change. An operational concept for the determination of carbon fluxes for the Belgian territory is the goal of the presented study. The approach is based on the integration of remotely sensed data into ecosystem models in order to evaluate photosynthetic assimilation and net ec...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2008
ISSN: 0886-6236
DOI: 10.1029/2006gb002735