A remotely sensed pigment index reveals photosynthetic phenology in evergreen conifers
نویسندگان
چکیده
منابع مشابه
A remotely sensed pigment index reveals photosynthetic phenology in evergreen conifers.
In evergreen conifers, where the foliage amount changes little with season, accurate detection of the underlying "photosynthetic phenology" from satellite remote sensing has been difficult, presenting challenges for global models of ecosystem carbon uptake. Here, we report a close correspondence between seasonally changing foliar pigment levels, expressed as chlorophyll/carotenoid ratios, and e...
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Shoot structure can be quantified as the ratio of maximum shoot silhouette area to maximum leaf silhouette (projected) area (R(max)). I have used published studies on the effects of shade-shoot structure on photosynthetic production of evergreen conifer stands to test the hypothesis that the lower crown of stands of species with a high R(max) contributes significantly to photosynthetic producti...
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Tree species in the boreal forest cycle between periods of active growth and dormancy alter their photosynthetic processes in response to changing environmental conditions. For deciduous species, these changes are readily visible, while evergreen species have subtler foliar changes during seasonal transitions. In this study, we used remotely sensed optical indices to observe seasonal changes in...
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ژورنال
عنوان ژورنال: Proceedings of the National Academy of Sciences
سال: 2016
ISSN: 0027-8424,1091-6490
DOI: 10.1073/pnas.1606162113