Dr. Joanne C. White Profile picture
Research Scientist @PFC_CFS @NRCan | Adjunct Prof @ubcforestry | Alum @helsinkiuni | #forests #forestinventory #lidar #Landsat #CFSEFI #remotesensing 🌲🛰️
Apr 12, 2023 8 tweets 7 min read
📢NEW PUBLICATION in Forest Ecology and Management: Pre-fire measures of boreal forest structure and composition inform interpretation of post-fire spectral recovery rates #OpenAccess #forestrecovery #boreal #fire
doi.org/10.1016/j.fore…

A short 🧵 follows... Image Spectral recovery=# of yrs reqd for pixel to attain 80% of its pre-disturbance NBR value (Years to Recovery, Y2R). NBR=Normalized Burn Ratio, which exploits differences in spectral response of vegetation & exposed soil in NIR and SWIR wavelengths. Enabled by #Landsat time series. ImageImage
Apr 28, 2021 12 tweets 13 min read
#Lidar is an operational technology for #forestinventory. Single-photon lidar (#SPL) may provide an acquisition advantage for large areas. How does #SPL perform in an area-based #forest inventory? Some things we have learned (i.e. a thread)!

#OpenAccess: bit.ly/37GTeZG 2/ We used #SPL and 269 field plots to generate an area-based operational #forestinventory over a 15000 ha study area of temperate mixedwood forest representing a complex assemblage of tree species, forest structures, and management histories. bit.ly/37GTeZG
Jan 6, 2020 4 tweets 4 min read
An increasingly common question: “We generated an enhanced forest inventory with #lidar data and ground plots for one of our management units. Can we use the same models for our other management areas?” #CFSEFI #forestinventory A great question and one that is top of mind for many of us who generate and use #forestinventory data. So what does the #science tell us about the transferability of area-based models? #CFSEFI