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PERFORMANCE OF THE ENHANCED VEGETATION INDEX TO DETECT INNER-ANNUAL DRY SEASON AND DROUGHT IMPACTS ON AMAZON FOREST CANOPIES
Amazon rainforests Enhanced Vegetation Index dry season leaf fl ush
2015/5/6
The Amazon rainforests represent the largest connected forested area in the tropics and play an integral role in the global carbon cycle. In the last years the discussion about their phenology and re...
BACKSCATTERING OF INDIVIDUAL LIDAR PULSES FROM FOREST CANOPIES EXPLAINED BY PHOTOGRAMMETRICALLY DERIVED VEGETATION STRUCTURE
Canopy imaging silhouette footprint echo triggering waveform LiDAR
2014/4/24
In recent years, airborne LiDAR sensors have shown remarkable performance in the mapping of forest vegetation. This experimental study looks at LiDAR data at the scale of individual pulses to elucidat...
AREA-BASED SNOW DAMAGE CLASSIFICATION OF FOREST CANOPIES USING BI- TEMPORAL LIDAR DATA
Change detection airborne laser scanning logistic regression
2014/6/5
Multitemporal LiDAR data provide means for mapping structural changes in forest canopies. We demonstrate the use of area-based estimation method for snow damage assessment. Change features of bi-tempo...
Plant physiological and environmental controls over the exchange of acetaldehyde between forest canopies and the atmosphere
physiological and environmental controls exchange forest canopies atmosphere
2010/1/18
We quantified fine scale sources and sinks of gas phase acetaldehyde in two forested ecosystems in the US. During the daytime, the upper canopy behaved as a net source while at lower heights, reduced ...
Modelling longwave radiation to snow beneath forest canopies using hemispherical photography or linear regression
forest snow canopy radiation modelling longwave radiation hemispherical photography
2014/4/3
Forest canopies reduce shortwave radiation and increase longwave radiation reaching the underlying surface, compared with
open areas, and thus influence rates at which forest snowpacks melt. Th...