## Results
### Data Collections at High Spatial or Stand Level Resolution
#### 3.1.5. HyPlant_ Dual VSWIR  
The capability of the _HyPlant_ DUAL VSWIR spectrometer to discriminate forest classes was evaluated at the native 2 m spatial resolution, since this instrument enables full spectrum reflectance observations acquired with high signal to noise ratio (SNR). As expected, The _HyPlant_ DUAL provided excellent discrimination of LP forest stand ages, which was apparent with the range of reflectance magnitudes across the VSWIR spectrum (Figure 7A), especially in the NIR (\(\sim\)760-1300 nm), the MIR (\(\sim\)1500-1800 nm), and even the SWIR (\(\sim\)1900-2400 nm) regions. The visible range (400 to \(\sim\)700 nm) provided little age class discrimination. The LP ROIs generally sorted out according to stand age, with the younger stands having higher NIR, MIR, and SWIR reflectance and the older stands displaying lower reflectance across the entire VSWIR spectrum. For example, the youngest (2 year) age class exhibited the highest NIR reflectance (\(\sim\)30-35%), whereas the mature 29 year class had the lowest NIR reflectance (\(\sim\)15-20%), with the intermediate age classes falling in between (Figure 7A). The oldest LP group (33 year) didn't have the lowest NIR reflectance, but fell within the cluster of overlapping spectra for older LP stands (14-27 year). The spectrum for the mixed pine/deciduous group, which was visibly undergoing early stages of fall senescence with foliage color changes, fell between the spectra for the 3 and 4 year old LP classes.  
Figure 6: Map Products aggregated to 14 m partial resolution derived from mosaics of the parallel N-S flight lines (red lines, Figure 1) for the Parker Tract forest collected near solar noon on 26 October 2013. G-LiHT products: (**A**) true color RGB image derived from the G-LiHT VNIR imaging spectrometer (the numbers are the stand ages in years, as of 2013); (**B**) CHM from G-LiHT LiDAR observations for all vegetated areas (0–35 m); (**C**) the PRI hyperspectral reflectance index (values between \(-\)0.1 and 0.03) from the G-LiHT VNIR spectrometer; (**D**) the NDVI reflectance index (values, 0.4–0.9) from the G-LiHT VNIR spectrometer; and (**E**) the adjusted surface temperature (5–20 \({}^{\circ}\)C) from the G-LiHT thermal sensor. Areas shown in black (e.g., (**B**,**D**)) are flat fallow fields. _HyPlant_ products: (**F**) The red-band F685 emissions derived at 685 nm; (**G**) the far-red F740 emissions derived at 740 nm; and (**H**) the Red/Far-red fluorescence ratio (Fratio, F685/F740). Bar scales for each map are provided below the mosaics. The distance scale indicates the site area observed is \(\sim\)2 km \(\times\) 8 km. The tower site is indicated with a black and white circle.  
When the mosaics made from the _HyPlant_ DUAL VSWIR spectra and the G-LiHT CHM were merged at this spatial scale (14 m\({}^{2}\))(Figure 7B), it was possible to discern smaller scale spatial patterns in the mosaic than were seen in the comparable maps of PRI and NDVI from the G-LiHT VNIR spectrometer (Figure 6C,D). This merged _HyPlant_/G-LiHT (VSWIR/CHM) product enhanced interpretation of the site's spatial distribution of stand age classes and complements G-LiHT's CHM/RGB 3-D mosaic (Figure 4, bottom).